RE: The process tomcat {pid 1488.0000 } is leaking handles
--- [EMAIL PROTECTED] wrote:
I have and they put it down to being the Tomcat
application - not much use
at all!
On task manager it does indicate that tomcat is at
fault..
-Original Message-
From: Christoph Kutzinski [mailto:[EMAIL PROTECTED]
Sent: 13 September 2005 11:40
To: Tomcat Users List
Subject: Re: The process tomcat {pid 1488. } is
leaking handles
This Peregrine Get Answers application is probably
leaking file
handles. Ask their support.
[EMAIL PROTECTED] wrote:
We have a server running Peregrine Get Answers
which use TOMCAT as part of
its installation
We are seeing (via task manager) a slow build up
of handles for the tomcat
app..
Has anyone come across this before?
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All task manager can tell you is that the application
Tomcat is holding all these file handles opened. Your
application is running inside of Tomcat, so of course
the tomcat application is holding the files open, but
if your web app is doing this then it's the code in
the web app even though the Tomcat server is holding
open the files. The code opening the files should be
closing them. What files are being held open? Can
you tell this with any tools you have? That would
help you more than anything.
Wade
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Re: user authetication on MySql db issue need some help!
--- Yassine ELassad [EMAIL PROTECTED] wrote: hi list, iam about to set my user to a database instead of file and i am now trying to get that done on a mysql rdbms i created the following tables : mysql use authority; Database changed mysql show tables; +-+ | Tables_in_authority | +-+ | user_roles | | users | +-+ 2 rows in set (0.00 sec) mysql describe user_roles; +---+-+--+-+-+---+ | Field | Type| Null | Key | Default | Extra | +---+-+--+-+-+---+ | user_name | varchar(15) | | PRI | | | | role_name | varchar(10) | | | | | +---+-+--+-+-+---+ 2 rows in set (0.00 sec) mysql describe users; +---+-+--+-+-+---+ | Field | Type| Null | Key | Default | Extra | +---+-+--+-+-+---+ | user_name | varchar(15) | | PRI | | | | user_pass | varchar(32) | | | | | +---+-+--+-+-+---+ 2 rows in set (0.00 sec) and this this is my server.xml: = Server port=8005 shutdown=SHUTDOWN GlobalNamingResources !-- Used by Manager webapp -- Resource name=UserDatabase auth=Container type=org.apache.catalina.UserDatabase description=User database that can be updated and saved /Resource ResourceParams name=UserDatabase parameter namefactory/name valueorg.apache.catalina.users.MemoryUserDatabaseFactory/value /parameter parameter namepathname/name valueconf/tomcat-users.xml/value /parameter /ResourceParams /GlobalNamingResources Service name=Catalina Connector port=8080 / !-- This is here for compatibility only, not required -- Connector port=8009 protocol=AJP/1.3 / Engine name=Catalina defaultHost=localhost Logger className=org.apache.catalina.logger.FileLogger / Realm className=org.apache.catalina.realm.UserDatabaseRealm resourceName=UserDatabase / realm className=org.apache.catalina.realm.JDBCRealm debug=99 driverName=org.gjt.mm.mysql.Driver connectionURL=jdbc:mysql://dekold4711/authority connectionName=tomcat connectionPassword=tomcat userTable=users userNameCol=user_name userCredCol=user_pass userRoleTable=user_roles roleNameCol=role_name digest=md5 / Host name=localhost appBase=webapps / /Engine /Service /Server each time iam trying to login i gets an error message telling me wrong username or wrong password catalina.out dont show any susspecious errors any idea what i could be doing wrong please!! regards Yassine ELassad I'm using mysql fine. I use a context.xml file for my web app in META-INF and this is it: ?xml version=1.0 encoding=UTF-8? Context path= reloadable=true Resource auth=Container driverClassName=com.mysql.jdbc.Driver maxActive=100 maxIdle=30 maxWait=1 name=jdbc/caro462 password= removeAbandoned=true type=javax.sql.DataSource url=jdbc:mysql://localhost:3306/caro462?autoReconnect=true username=caro462/ Realm className=org.apache.catalina.realm.DataSourceRealm dataSourceName=jdbc/caro462 debug=99 localDataSource=true roleNameCol=role userCredCol=password userNameCol=userid userRoleTable=USERROLELINKS userTable=USERS/ /Context I then have my web.xml file setup with different security constraints like this one: security-constraint display-nameAgent security constraint/display-name web-resource-collection web-resource-nameAgents/web-resource-name !-- Define the context-relative URL(s) to be protected -- url-pattern/agents/secure/*/url-pattern /web-resource-collection auth-constraint !-- Anyone with one of the listed roles may access this area -- role-nameAdministrator/role-name role-nameAgencyAdministrator/role-name role-nameAgent/role-name /auth-constraint /security-constraint I can login fine. You certainly have to make sure you have your roles linking to your user name. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Memory leak in Tomcat
--- Ingrid Morterud Rosvall [EMAIL PROTECTED] wrote: Hello. We are running an application on Tomcat 4.1.30, and java 1.4.2. Our application is using the struts framework with jsp's, and cocoon to render the xml's. There seems to be a major memory leak at startup - the application seems to constantly be using between 40 - 45 mb of the memory. We also have some memory leak during runtime, when users log on and starts using the application. So far we have not been able to find anything in our code review that will explain these memory leaks, and when we monitor the memory used, there is no obvious reason, nor is there any connection with how the users use our application and the amount of memory being used. We would highly appreciate any help on this topic, and any tips and hints you can provide us with. Ingrid and Tommy One, I think you might be having issues by not understanding the java heap...just an observation by the way you phrased the question. Two, do you have any more information about the memory being used? How much were you expecting to be used? Are you seeing the virtual memory usage or the real memory usage? How did you determine the amount of memory used? Do you have any numbers? Have you tried to use a memory profiler? Search the list for memory profiler. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Memory leak in Tomcat
--- Ingrid Morterud [EMAIL PROTECTED] wrote: Thanks for the quick reply. You might be right in us not understanding the java heap. Still - then we are even more at a loss on how to fix the problem than if we really had understood how it works. We are running on a test server with 64 mb total memory. I know I can increase that, still increasing it will not solve the original problem. To be quite honest I am not quite sure what I would be expecting to be using, but I would think that the application up and running would use less than what it is using at the moment. We are using the following code to determine the memory used: br %=java.lang.Runtime.getRuntime().freeMemory()/1024% KB br %=java.lang.Runtime.getRuntime().maxMemory()/1024% KB br %=java.lang.Runtime.getRuntime().totalMemory()/1024% KB br The application uses approx 40 - 45 Mb when it is running. During runtime (when users access and use the application) they use from zero to 25 Mb of memory. I still cannot find any pattern as to when it uses the memory. The amount of memory used changes not accordingly to the user input, that means that when a user does the same thing twice, that does not mean that the same amount of memory is used. We haven't used a memory profiler as of yet, but we are going to try that out now. If you have any more hints and tips, it would be highly appreciated. Ingrid and Tommy Ingrid, I included this on the tomcat users list. Yes, any time you reply to a mail where you asked the question on the list then please include the entire list. It will help everyone help you out as they will get the information you give me, and if it is something they could better help you with then the right person got the info, and you can get helped faster. Yeah, 64mb of memory could be enough depending on what you are doing, but you are using struts and I don't know what other libraries. The jvm itself will use a number of megs of memory simply by loading classes and static information into what is know as Persistent memory. A good link would be: http://java.sun.com/docs/performance/ where you will find a lot of information about memory and performance. Also see: http://java.sun.com/docs/hotspot/gc1.4.2/ Also understand that the info you will see with the commands you are using in your source code are not going to show you the memory being used by the persistent section of the JVM process nor are they going to show you the OS reserved memory for the process or virtual memory. So, you might have issues trying to use Tomcat on a 64MB machine depending on the number of libraries used to the number of classes loaded to the number of static variables and things of that nature. The OS will use a number of memory along with what ever other applications you are using. After that memory is used you start paging to disk a lot and performance will stink at best. You can also search the list for JProfiler. There have been other mailings about memory and leaks on the list and a lot of information for a starting point has already been provided. I can simply start tomcat with only the admin and manager application running and be using 22mb of memory. Are you memory usage reports after your web application has loaded. Then after it has loaded you are using 40+mb? You can find jstat and install it into your 1.4.2 jvm. If you have 1.5 it will already be available. Then with tomcat running do a jps to locate your PID and then jstat -class PID to explain the classes loaded before you hit your first URL to your web app vs after. Might tell you something as well. Using: http://java.sun.com/docs/hotspot/gc1.4.2/ and JAVA_OPTS you should be able to adjust the memory usage of tomcat, and if not you might have to dig into catalina.bat or if on windows use the configure tomcat GUI for the service. But, that amount of memory is so tiny I don't think you'll have much luck if your web application expects much usage. It will all depend on the number of classes being loaded and used and the number of objects being instantiated. You can limit your entire heap with the -mx option of the JVM. This will not however limit your persistent memory usage. You'll have to use -XX:MaxPermSize to limit that. Limiting your heap and your permsize however will mean you know for a fact or good close estimate that you should be loading x number of classes and using x number of perm memory and limiting your heap means you have calculated your application and tomcats expected memory usage and number of supported users for your needs. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: AJP connector maxthreads problem
--- David Wall [EMAIL PROTECTED] wrote: 1) We have only a moderately busy site with about 500 new visitors entering from outside every day, so it would have thought it would be fairly difficult for them to use up all the 75 connections at the same time, but I do have some programmes that create their own threads, though in a fairly limited way. In your expert view are 75 jk2 connections sufficient for this kind of moderate use, or is it likely I've some kind of problem I've got to get to the bottom of? I've been through my recent new applications, and there really is nothing that could have created this problem recently. It sure sounds like something is not releasing the threads. In low volume sites, having 75 concurrent requests would be high. It sounds like they are not being properly released when done. 2) I've set connectionTimeout=2, which seems to be what everybody else was setting it to, can I reduce this without any problem? It seems quite long, 20 seconds, why hang on to connections for so long, or is there a lot of overhead in creating them? I believe this value is how long Tomcat will wait to receive the actual HTTP requests after it establishes the connection. So 20 seconds is more than adequate. Making it too low may cause people are slower dial up or the like to get problems. 3) If I want to, can I increase my max connections to 125 without any qualms? - This would appear to be the simplest solution here. That would certainly work, but if you are running out because threads are not being released, it just means you'll run out later than before. Good luck, David - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Dump a stack trace of the JVM and see where it is locked up in the different threads. If you are able to run a 1.5 VM this would be much easier as you could use jps and jstack to dump all of this externally for your running tomcat process. Anyways, get a stack trace for all of your threads, and you can get a better idea of what is going on. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
All users help needed to track down all access to HttpSession.getAttribute in Tomcat 5.0.x and 5.5.x
All, There is an issue in Tomcat 5.0.x and 5.5.x which affects concurrency. The deal is HttpSession.getAttribute is not synchronized and can cause the failure of session variable lookup as well as an infinite or very long running loop to occur during a getAttribute call. There is no guarentee that setAttribute will remain synchronized in the future according the information from Tomcat developers in the original bug report and how this is always the developers problem. The Tomcat source code has different places where HttpSession.getAttribute and setAttribute are called (notibly the standard JSP tags jsp:getAttribute and jsp:useBean) which are not being synchronized when they need to be. These need to be found and reported as bugs so they can be corrected. Remember that access to the session in any way where the end developer (JSP or Servlet developers) can't synchronize and protect against concurrency issues or where it doesn't make sense for them to (JSP tags) needs to be found and reported as bugs. Any help is appreciated and it helps everybody. Everyone can send me their findings to mail alias [EMAIL PROTECTED] and I can be a point for creating the bug report in BugZilla for these particular bugs. Please see: http://issues.apache.org/bugzilla/show_bug.cgi?id=36541 and http://issues.apache.org/bugzilla/show_bug.cgi?id=36586 for more details Thanks, Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/JVM hangs in session.getAttribute / HashMap.get()
--- Remy Maucherat [EMAIL PROTECTED] wrote: On 9/7/05, GB Developer [EMAIL PROTECTED] wrote: coming late to the party with: http://blogs.opensymphony.com/plightbo/archives/000175.html I had read your blog when you originally posted it, and thought it was the most interesting blog I had read in months. IMO, given the average size of the array in a typical hashmap (very small), they should have added a robstness check (typically, e != e.next). -- x Rémy Maucherat Developer Consultant JBoss Group (Europe) SàRL x - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Nothing shocking about HashMap. It becomes very hard to rely on complex Objects if they are not being synchronized when modified especially something like thismultiple lines of code not being synchronized Any map which is being put from multiple threads should be synchronized and anything in an inconsistant state is a bad idea period. The hashtable shouldn't be resizing anything when simply calling get..and per the code it doesn't. A put must be called for a resize to take place no if and or but about it, so it's not just a getAttribute call or even 50 million of them alone going to cause HashMap to lock, but rather the Object being in an intermediate step when get is called. If you can use a synchronized HashMap and the problem not occur then the problem certainly comes from modifying the map and reading from different threads at the same time which makes sense when looking at the code and the javadoc statement(Directly from the javadocs): Note that this implementation is not synchronized. If multiple threads access this map concurrently, and at least one of the threads modifies the map structurally, it must be synchronized externally. (A structural modification is any operation that adds or deletes one or more mappings; merely changing the value associated with a key that an instance already contains is not a structural modification.) This is typically accomplished by synchronizing on some object that naturally encapsulates the map. If no such object exists, the map should be wrapped using the Collections.synchronizedMap method. This is best done at creation time, to prevent accidental unsynchronized access to the map: Map m = Collections.synchronizedMap(new HashMap(...)); Should be enough to explain the issue and why synchronization should be used. I haven't looked at the Tomcat code, but why would a Session not use synchronized maps? In my opinion it's not a bug in HashMap as it's up front about it not being synchronized. To fix the original posters current situation they should be able to synchronize on an object when accessing the session...you'll just have to track down all of your calls which are setting and getting attributes and synchronize the code. My 2 cents Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat/JVM hangs in session.getAttribute / HashMap.get()
--- Caldarale, Charles R [EMAIL PROTECTED] wrote: From: Wade Chandler [mailto:[EMAIL PROTECTED] Subject: Re: Tomcat/JVM hangs in session.getAttribute / HashMap.get() so it's not just a getAttribute call or even 50 million of them alone going to cause HashMap to lock, but rather the Object being in an intermediate step when get is called. Or the HashMap may have been left in an indeterminate state due to concurrent unsynchronized set requests at some point in the past. A single get can later stumble into the situation and hang in a loop. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Exactly. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: AW: Tomcat/JVM hangs in session.getAttribute / HashMap.get()
--- Leon Rosenberg [EMAIL PROTECTED] wrote: -Ursprüngliche Nachricht- Von: Wade Chandler [mailto:[EMAIL PROTECTED] Gesendet: Mittwoch, 7. September 2005 21:11 An: Tomcat Users List Betreff: Re: Tomcat/JVM hangs in session.getAttribute / HashMap.get() Should be enough to explain the issue and why synchronization should be used. I haven't looked at the Tomcat code, but why would a Session not use synchronized maps? In my opinion it's not a bug in HashMap as it's up front about it not being synchronized. To fix the original posters current situation they should be able to synchronize on an object when accessing the session...you'll just have to track down all of your calls which are setting and getting attributes and synchronize the code. Unfortunately no. Not only you have to rewrite all your calls to the session, you also have to rewrite all 3rd-party taglibs like struts, tapestry, pager, jstl or whatever you are using. Each getAttribute must become synchronized. It is simply not possible to fix it, without patching tomcat. Regards Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Agreed after thinking about it moreI read your comment on the bug. I added my own comment as well. It definitely needs fixed. Especially since other Jakarta projects and many others are broken by the issue. I'm digging in my spec right now. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Bug votes needed..you really should read this..Tomcat/JVM hangs in session.getAttribute / HashMap.get()
This bug doesn't only affect code where you access the session using session.getAttribute() or session.setAttribute(,), but also affects jsp tags such as jsp:useBean with scope=session. I'm guessing that pages using EL and accessing the session are going to be broken as well I didn't look that far, but if you are using the jsp page context and using the methods JspContext.get/setAttribute and using SESSION_SCOPE you will be affected by the bug. The big picture here is that we can't control the users, and if they make multiple threads access the session they can and more than likely crash your server. Remember if you access the session from your application they can hit reload a few times and cause this or if you use frames. They could even have more than one browser instance opened. One the CPU will start to get used up, and two your Tomcat threads will run out. Affected versions: Tomcat 5.0.x Tomcat 5.5.x If you don't have a bugzilla account maybe you can set one up and vote for the bug. It helps all of us to vote for bugs. So, read up on it, and make a decision. Don't read only a few comments about the bug as the entire picture isn't discussed. Read them all and know what the issue is. Here is the bug: http://issues.apache.org/bugzilla/show_bug.cgi?id=36541 Again, setup a bugzilla account and vote for this bug. If an application doesn't use the session at all it won't be affected, but remember if you use sessions and notice your Tomcat crashing or hanging then this is probably your issue. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Making a Database Image Show Up on a Jsp Page
--- Edmund Urbani [EMAIL PROTECTED] wrote:
Philip Cote wrote:
I'm trying to write to binary data from a MySQL
database into a jpeg
file so I can show it on a jsp page but I'm not
having much luck. My
bean can create files outside the servlet / jsp
context using the
usual java.io classes. As I understand it,
java.io classes aren't
allowed for EJBs. Does this apply to plain java
beans as well? If
so, what are the alternatives for doing what I'm
trying to do?
your java classes can do anything the VM process is
permitted to do,
unless you have restricted using a security manager
and the
catalina.policy file (i think eg. debian tomcat
packages do that by
default). i'm not sure just jow exactly you are
trying to serve those
images to the client and why you want to write them
(temporarily) to the
file system. i would probably want to send them back
directly from
memory after reading them from the DB as a blob
(much like Larry Meadors
just suggested while i was writing this ...).
Edmund
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I have never heard that EJB could not use java.io
classes. That wouldn't make much sense. Even JDBC
some times needs to use streams for it's data.
ByteArrayOutputStream and StringWriter are at times
needed to perform a task as well for certain things.
Sometimes people will make a servlet like this then
address this servlet for all images. You'll need to
set the content type of your return and stream the
bytes out of your DB to the response output in your
servlet. Depending on the type of field you have used
in the DB you can do something like:
java.io.InputStream in = null;
try
{
in = resultSet.getBinaryStream(columnName);
java.io.BufferedInputStream bin =
new java.io.BufferedInputStream(in);
java.io.BufferedOutputStream bout =
new java.io.
BufferedOutputStream(response.getServletOutputStream());
int iread = bin.read();
while(iread!=-1)
{
bout.write(iread);
iread = bin.read();
}
bout.flush();
}
finally
{
if(in!=null)
{
in.close();
}
}
Just be sure you have your content type setup and all
you need to do there. Then you can simply have a
servlet to read images and use as the endpoint in your
IMG tags. It's not so bad.
Wade
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RE: Has anyone used Tomcat 5.5.9 connecting to MS SQL Server usin g JNDI?
--- Allistair Crossley [EMAIL PROTECTED] wrote: Hi Wade, Can you perhaps resend the configuration files server.xml web.xml yourapp.xml listing of files in common/lib listing of files in yourapp/WEB-INF/lib Again? Allistair, Sorry man, but I only wrote to you about reading up on JDPA, setting up Tomcat debug, and using TCP/IP for debugging instead of shared memory. Other guy sent info for the config files. I have used MS SQL Server and a pooled data source from inside of my web app before. I created my own datasource factory and didn't use context.xml for the configuration of what I did, though the setup should be about the same as far as where I had to put the files. I put the jdbc driver files in the common/lib on one machine, and if I remember correctly on one server for what ever reason it only seemed to work correctly by putting the files in the common/endorsed directoryI had to get someone to put files there for this one machine, and I had not configured it, but for what ever reason on this particular machine it was the only directory the jdbc drivers would load correctly. I always use a context.xml file for the data source configuration myself when I use the container managed data sources. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: URGENT : Special Character when deployed on Linux
--- nitin dubey [EMAIL PROTECTED] wrote: Hello all, I am getting special characters when we enter spaces during formatting a text in a textarea. It used to work perfectly in our development environment but when we moved it to production we get 'Â' character for every repeated blank space. The only thing changing in development and prodution is OS from Windows to Linux(Production). I just want to know if anyone has faced this problem anytime developing their applications. Development Environment: OS:Windows 2K Browser: IE5.5+, Firefox1.0+ Database: MYSQL (on Linux Server) ServletContainer: Tomcat(On windows Server) Production Environment: Database: MYSQL (on Linux Server) ServletContainer: Tomcat(On Linux Server) Note:I am also using FCKEditor for editing the content. But they say its not the problem with FCKEditor. Cheers, Nitin __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] You're getting the characters where? Is this in your java code or after you put into the database then read back out? For your MySQL connection you will probably want to set the encoding. See it's connection parametersif it's after putting the data into the database. I've seen this happen before. You're default encodings are probably different. Also if you are using a Reader to parse anything as a stream then you will want to setup some config to set your encoding there as well. Is this maybe after pasting from Word, or is this in IE using an encoding on the page or are you using an encoding with your form? You'll need to use the same encoding every where. JSP, Readers, MySQL, etc. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Has anyone used Tomcat 5.5.9 connecting to MS SQL Server usin g JNDI?
--- Wylie, Ian [EMAIL PROTECTED] wrote:
Allistair,
My apologies for taking much longer than usual to
get back to you but I had
to finish some Java code that allowed us to upgrade
our portal to PlumTree
version 5.
To clarify and answer your points below.
1) I have opted not to have a context.xml file in
the META-INF directory
but I am using the
TOMCAT_HOME/conf/Catalina/localhost/webappname.xml
file
instead.
2) I have ensured that the 3 MS JAR files for the
JDBC connection exist
only in TOMCAT_HOME/common/lib and not in my webapp
lib.
3) I have changed the java code to use a simple
'DataSource' instead of a
'ConnectionPoolDataSource' connection. See Java
code snippet below :-
Unfortunately I still get the error below :-
ERROR - NamingException - Config error with JNDI
and
datasource.javax.naming.NamingException: Cannot
create resource instance
ERROR com.webconnex.cognos.PORT.OMTLreport : Cannot
create resource
instance
I have attached my web.xml and
TOMCAT_HOME/conf/Catalina/localhost/webappname.xml
files for your perusal.
I am of yet no further forward in solving my
problem.
Any further insight would be appreciated, as Tomcat
5 allows me to do quite
a few things better, not least of which is
debugging!!
Java Code snippet :-
=
logger.debug(Before
InitialContext.) ;
InitialContext ctx = new
InitialContext();
if (ctx == null) {
log(ERROR initialising
InitialContext.) ;
logger.error(ERROR initialising
InitialContext.) ;
}
log(Before Context.) ;
ds = (DataSource)
ctx.lookup(java:comp/env/jdbc/UKportalPool);
log(Before initialising
DataSource.) ;
if(ds != null) {
con = ds.getConnection();
if (con != null) {
if ((pType != null)
(!pType.equals()))
{
userDetails = new
pfUsersBean(pType,
posName, typeCD, firstLineProduct);
userSessionDetails = new
pfUserSessionBean();
userDetails.getPrefix(con,
userDetails); // See if User is in database
//userDetails.getPrefix(pCon,
userDetails); // See if User is in database
ptpResponse.setSettingValue(SettingType.Portlet,
SalesCubePrefix,
userDetails.getSalesCubePrefix() ) ;
ptpResponse.setSettingValue(SettingType.Portlet,
description,
userDetails.getGeographyID() ) ;
ptpResponse.setSettingValue(SettingType.Portlet,
TMTLdescription,
userDetails.getGeographyID() ) ;
ptpResponse.setSettingValue(SettingType.Portlet,
MSOdescription,
userDetails.getGeographyID() ) ;
}
}
else {
log(ERROR - DB
Connection returned was null in
PortletHelper!) ;
logger.error(ERROR - DB
Connection returned was
null in PortletHelper!) ;
}
}
else {
log(ERROR - Datasource
returned was null in
PortletHelper!) ;
logger.error(ERROR -
Datasource returned was null
in PortletHelper!) ;
}
}
catch (NamingException ex){
log(ERROR - NamingException -
Config error with JNDI and
datasource. +ex);
log(ex.getMessage());
logger.error(ERROR -
NamingException - Config error with
JNDI and datasource. +ex);
logger.error(ex.getMessage());
}
catch (NullPointerException npE) {
log(npE.getMessage());
logger.error(ERROR - Null pointer
exception.);
logger.error(npE.getMessage());
}
catch (SQLException ex ){
log(Cannot get JNDI connection from
datasource. +ex);
logger.error(Cannot get JNDI
connection from datasource.
+ex);
logger.error(ex.getMessage());
}
catch(IOException IOe) {
logger.error(ERROR - IOException
occurred: +IOe) ;
logger.error(IOe.getMessage()) ;
}
catch(Exception e) {
log(ERROR - Exception occurred:
+e) ;
logger.error(ERROR - Exception
occurred: +e) ;
logger.error(e.getMessage()) ;
}
==
-Original Message-
From: Allistair Crossley
[mailto:[EMAIL PROTECTED]
Sent: 11
Re: Passing parameter upon login using j_security_check
--- Mark Goking [EMAIL PROTECTED] wrote: Is it possible to pass a parameter upon login using j_security_check and passing that parameter to index.jsp? thanks - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I don't think anything gets forwarded when the post is handed off. I tried printing all variables once and nothing. I was asking about this before. You can create your own filter and do the same thing however. Should be straight forward. Then you can even customize your security mechanism. Just set a session variable and if it is not set then you know to bounce back to the security, otherwise allow the http call to go through. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: #1578;#1605; #1575;#1587;#1578;#1604;#1575;#1605; #1575;#1604;#1585;#1587;#1575;#1604;#1607; DISABLE YOUR AUTO REPLY
--- #1605;#1606;#1578;#1583;#1610;#1575;#1578; #1603;#1608;#1610;#1578; #1575;#1604;#1582;#1610;#1585; [EMAIL PROTECTED] wrote: #1578;#1605; #1575;#1587;#1578;#1602;#1576;#1575;#1604; #1585;#1587;#1575;#1604;#1578;#1603; #1608;#1587;#1601; #1606;#1602;#1608;#1605; #1576;#1575;#1604;#1585;#1583; #1593;#1604;#1610;#1603; #1576;#1587;#1585;#1593;#1607; #1578;#1581;#1610;#1575;#1578;#1610; #1575;#1582;#1608;#1603;#1605; Q8CK Please disable your auto reply or remove yourself from the list. I receive an email from your directly every time I write to the list. It's part of the rules of the list not to use auto replies. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Unable to access application if I am on VPN
--- Brian Cook [EMAIL PROTECTED] wrote: Hm Could you configure the firewall to reroute the JVM request thought the proxy? Len Popp wrote: Can you download the DTD to the server and point the config file at the local copy? That must be possible, otherwise you couldn't run an application on an intranet that's not connected to the WWW. -- Brian Cook Digital Services Analyst Print Time Inc. [EMAIL PROTECTED] 913.345.8900 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] 1) There is no guarentee the call will be from a standard URLConnection subclass like HttpURLConnection to get the XML entity from the XML parser, so you'll have to figure out what is used to make the call over the web for the XML entity (DTD/schema) Does struts use a specific parser, or does it use the JVM standard setup parser by calling the javax.xml classes, can you find out which parser is used, and how it accesses the internetcould use something like Apache HTTP client instead of URLConnection from the JVM...setup would be different for changing the proxy? 2) If the only problem is the DTD and Schema lookups you can ask how do I get access to the XML Entity Resolver for Struts or Tomcat (make that the subject in the respective lists) as I don't think their is a way to do this specifically for a web application, so more than likely you want the struts entity resolver, but can't hurt to add them to the Tomcat one as well. For all DTD and Schema paths (URIs) you are using you can add a local path to the entity resolver for those http paths. This will keep the XML parser from going out to the internet for certain DTD/Schema locations. This should be more efficient anyways as the entities won't be downloaded from the internet. Those look like the only options for you, obviously your organization uses a proxy, so getting around that probably won't be an option for you, so you have to not go out on the net for the entity resolution (meaning you need access to the Entity Resolver being used or need to be able to set it) or you have to go through your proxy. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Session Tracking
I think you need to read up on the java language a bit. See what static and final mean. Wade --- Raghaw Goswami [EMAIL PROTECTED] wrote: Thanks for the e-mail: First time it was 0 , then 1 , This is when the browser was closed and opened then it never incremented was always 0 when browser was closed and opened. I am attaching the Showsession.java file for reference. May be i am missing some thing if the variable is made static how can its value increment ? R --- Arup Vidyerthy [EMAIL PROTECTED] wrote: Does it not increment at all or does the increment counter gets reset and starts all over again from 0. Basically if you want to keep the counter incrementing everytime you access that page (or hit that that servlet) you need to make it a static variable in your servlet/jsp. -Original Message- From: Raghaw Goswami [mailto:[EMAIL PROTECTED] Sent: 19 August 2005 14:46 To: tomcat-user@jakarta.apache.org Subject: Session Tracking Hi, I have JDK 1.5 [J2SE 5.0 update 3], Tomcat 5.5.9,Win XP SP2, Trying a e.g. session tracking [The Session Tracking API] using HttpSession object. The program works[ accessCount increments] when I don't close the current browser and open new brwoser with CTRL + N, But if i quit the browser and then start again accessCount does not increment. Would appreciate any help in this regards Thanks in Advance R. __ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] ___ Yahoo! Messenger - NEW crystal clear PC to PC calling worldwide with voicemail http://uk.messenger.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tomcat 5.5.7+JRockit = windows service won't start
Does JRockit support the JNI standard for a native interface? Wade --- Brad Baynes [EMAIL PROTECTED] wrote: In the meantime since the last post in this thread BEA has released updates to JRockit such that it now supports the -Xrs switch. Has anybody on this list now had success running 5.5.x as a windows service with JRockit as the jvm? I am still getting errors when trying to start the service (Tomcat 5.5.9). From the log: [2005-08-15 11:32:20] [173 javajni.c] [error] The specified module could not be found. [2005-08-15 11:32:20] [897 prunsrv.c] [error] Failed creating java C:\ jrockit-jre1.5.0_03\jre\bin\jrockit\jvm.dll [2005-08-15 11:32:20] [1131 prunsrv.c] [error] ServiceStart returned 1 I have verified the jvm path listed above is correct and that the jvm is indeed the latest JRockit release. Brad From: Brad Baynes [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 23, 2005 4:48 PM To: tomcat-user@jakarta.apache.org Subject: Re: FW: RE: Tomcat 5.5.7+JRockit = windows service won't start No, the -Xrs is not available in the registry using the tomcat5 with 5.5.7 (or any version since 5.0.22 it seems). In the related Bugzilla entry (http://issues.apache.org/bugzilla/show_bug.cgi?id=33777) Mladen Turk states 'If you wish to use JRockit then simply update your params'. What does this mean? Was this also a reference to the registry params? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Custom tag runtime expression problem
Don't know exactly, but a good place to look is the source code for the JSTL from commons. They are making some calls in there to transform the values of EL and expressions. Wade --- Frank W. Zammetti [EMAIL PROTECTED] wrote: Hi all, I'm using Tomcat 5.0.29. I've created a custom tag and I need to be able to use runtime expressions for certain attributes. But it isn't working and I'm beating my head on the desk trying to figure out why. Here's my TLD: ?xml version=1.0 encoding=UTF-8? !DOCTYPE taglib PUBLIC -//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd; taglib tlibversion1.2/tlibversion jspversion1.1/jspversion shortnamemytags/shortname uricom/company/taglib/uri tag namebutton/name tagclasscom.company.app.taglib.ButtonTag/tagclass bodycontentempty/bodycontent attribute nameid/name requiredtrue/required rtexprvaluetrue/rtexprvalue /attribute attribute nameonClick/name requiredtrue/required rtexprvaluetrue/rtexprvalue /attribute attribute /tag /tag /taglib Specifically, I'm trying to do this on the page: %@ taglib uri=/WEB-INF/apptags.tld prefix=app % ... % String fName = (String)hm.get(name); % app:button id=btnSelect onClick=selectAll(%=fName%); / Now, the button renders its code just fine, the *ONLY* thing that isn't working is that the emitted HTML includes the string %=fName% instead of it being evaluated. I've verified that the fName string *DOES* get the appropriate value in it. So, as near as I can tell, the taglib code itself, all the setup, etc., is fine, *EXCEPT* for the ability to do runtime expressions like this. What am I missing? Does this need to be turned on in Tomcat or something? I wouldn't think so, but I'm at a loss. Thanks! Frank - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: jboss-tomcat bind issue
Got a firewall turned on? Wade --- Michael Tria [EMAIL PROTECTED] wrote: Please let me know if you think this e-mail belongs on a JBoss list instead of this one... Problem === JBoss 4.0 bundled with Tomcat 5.5, out of the box, will not bind to port 8080 for all interfaces. i.e. I can telnet to the port from the localhost, but not from outside. Please let me know how to bind to this port properly. On local machine... telnet 127.0.0.1 8080 Trying 127.0.0.1... Connected to 127.0.0.1. On remote machine... (IP address masked slightly) telnet 208.100.x.x Trying 208.100.x.x... - this will eventually time out Running a netstat -anp | grep 8080 shows this: Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp0 0 :::8080 :::* LISTEN 17487/java From the above, I can see that java (jboss) has a server socket listening on port 8080, but the local address looks off. System == OS:Linux, Fedora Core 2 JBoss: 4.0.2 w/ Tomcat 5.5 (out of the box) Java: 1.4.2_09 server.xml == Here is the relevant sections of the server.xml (out of the box) Engine name=jboss.web defaultHost=localhost ... Host name=localhost autoDeploy=false deployOnStartup=false deployXML=false ... I really appreciate the help. Thanks, Mike [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: * 2 Tomcat instances on same box
Paul, It sounds like you have them running on the same port. Either the connector 8005 is the same for both or the 8080 is still being used by both. The bind exception is a socket server exception telling you both instances are trying to use the same port number some where. Wade --- Paul Wallace [EMAIL PROTECTED] wrote: Hello, I am trying to achieve not the unimaginable, I thought - to have one instance of Tomcat (5.5) running on port 80, and one - also 5.5 (using the same JAVA_HOME) running on port 8080 on the same box (Win XP). They both start up independently and load on localhost / localhost:8080 just fine. But when one is started, the other will not start up and logs the below message. The one is started as a service, the other a .bat: set CATALINA_HOME=jakarta-tomcat-5.5.9 call %CATALINA_HOME%/bin/startup.bat I thought it may be a conflict of CATALINA_HOME, but as one is installed as a service, I see no reference to the variable in the registry. Any thoughts please? Thanks Paul. java.net.BindException: Address already in use: JVM_Bind at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359) at java.net.ServerSocket.bind(ServerSocket.java:319) at java.net.ServerSocket.init(ServerSocket.java:185) at org.apache.catalina.core.StandardServer.await(StandardServer.java:346) at org.apache.catalina.startup.Catalina.await(Catalina.java:600) at org.apache.catalina.startup.Catalina.start(Catalina.java:560) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 ) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl .java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:271) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: * 2 Tomcat instances on same box
One is the control port for SHUTDOWN and maybe other control (think only shutdown), and the other is the AJP port used to connect tomcat to other servers like Apache and IIS. If you are on a Linux box you can use Pseudo IP addresses. Linux allows more than one IP address to be assigned to a NIC. You can then use these different IPs to run your multiple containers on your internal IP addresses. It's probably a better solution than all different ports. You might be able to do this with Windows server, but I'm not sure. Maybe the Admin resource kit might have something to allow this. Wade --- Paul Wallace [EMAIL PROTECTED] wrote: Hi and thank you both for your replies. It turns out more than the HTTP port number needs to be different, as Server port=8005 shutdown=SHUTDOWN was common to both and thus causing the problem. Apart from being an attribute of the parent node, what is this port? Rgds Paul. It sounds like you have them running on the same port. Either the connector 8005 is the same for both or the 8080 is still being used by both. The bind exception is a socket server exception telling you both instances are trying to use the same port number some where. Wade --- Paul Wallace [EMAIL PROTECTED] wrote: Hello, I am trying to achieve not the unimaginable, I thought - to have one instance of Tomcat (5.5) running on port 80, and one - also 5.5 (using the same JAVA_HOME) running on port 8080 on the same box (Win XP). They both start up independently and load on localhost / localhost:8080 just fine. But when one is started, the other will not start up and logs the below message. The one is started as a service, the other a .bat: set CATALINA_HOME=jakarta-tomcat-5.5.9 call %CATALINA_HOME%/bin/startup.bat I thought it may be a conflict of CATALINA_HOME, but as one is installed as a service, I see no reference to the variable in the registry. Any thoughts please? Thanks Paul. java.net.BindException: Address already in use: JVM_Bind at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:359) at java.net.ServerSocket.bind(ServerSocket.java:319) at java.net.ServerSocket.init(ServerSocket.java:185) at org.apache.catalina.core.StandardServer.await(StandardServer.java:346) at org.apache.catalina.startup.Catalina.await(Catalina.java:600) at org.apache.catalina.startup.Catalina.start(Catalina.java:560) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39 ) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl .java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:271) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:409) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Can I call My thread class in JSP/Java Bean??
You may be getting an error in your thread. You
should not throw exceptions out of the run method.
You should always log and update some table or static
collection so you can do something later if needed,
but throwing errors from threads is never a good idea
as you can hang up some stuff at times depending on
your JVM and you'll not know what is happening in any
case. Use the standard java logging API, servlet
loggers, or log4j.
Wade
--- IndianAtTech [EMAIL PROTECTED] wrote:
Hi All,
Can I call thread classes in my JSP or Java Bean
classes??
The reason why I am asking is, I have a situation in
which if a person
registers as a consumer, then a mail shud be sent to
providers that
who matches the consumers requirements
There is a possinbilty of sending more than 100
mails at an instance.
So after successful registration by consumer, I
don't want to put the
consumer in wait mode, So I have created a thread
class and I am
trying to send the mail in the thread class
But the problem is although I called thread.start
method, my run
method is not invoking.
I thought there could be a problem with my code and
tested with
standalone java class. In standalone class I am able
to send the mail.
So, I don't know why tomcat is rejecting the My
thread execution.
Any Ideas??
here is my code
// calling the thread
jiya.general.results.MailThread mailThread =new
jiya.general.results.MailThread();
mailThread.start();
//sending the mail
private void sendMail() throws JiyaException {
JiyaMailComponent jmc=new
JiyaMailComponent();
jmc.setServer(192.12.0.91);
jmc.setUser([EMAIL PROTECTED]);
jmc.setPassword(a);
jmc.setFromAddress([EMAIL PROTECTED]);
jmc.setContentType(text/plain);
jmc.setTo([EMAIL PROTECTED]);
jmc.setSubject(Some Subject);
jmc.setBody(test body);
jmc.send();
}
//this is inner class of My main class
class MailThread extends Thread implements Runnable
{
public MailThread()
{
log(Entered here at mail thread
execution); // here I am to
see the log info in log file
}
public void run() {
try{
sendMail(); //not coming to this stage
}
catch(Exception ex) {
throw new RuntimeException(ex);
}
}
}
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Re: Can I call My thread class in JSP/Java Bean??
Also , if all else fails make sure you can do what the
thread is doing from the JSP to make sure you're
emails are actually getting sent. I have had some
funny issues sometimes with code in a servlet/JSP vs.
standalone. Break it down to the least common
denominator firstsimplify then you will know if
it's really the thread or not.
Wade
--- Wade Chandler [EMAIL PROTECTED]
wrote:
You may be getting an error in your thread. You
should not throw exceptions out of the run method.
You should always log and update some table or
static
collection so you can do something later if needed,
but throwing errors from threads is never a good
idea
as you can hang up some stuff at times depending on
your JVM and you'll not know what is happening in
any
case. Use the standard java logging API, servlet
loggers, or log4j.
Wade
--- IndianAtTech [EMAIL PROTECTED] wrote:
Hi All,
Can I call thread classes in my JSP or Java Bean
classes??
The reason why I am asking is, I have a situation
in
which if a person
registers as a consumer, then a mail shud be sent
to
providers that
who matches the consumers requirements
There is a possinbilty of sending more than 100
mails at an instance.
So after successful registration by consumer, I
don't want to put the
consumer in wait mode, So I have created a thread
class and I am
trying to send the mail in the thread class
But the problem is although I called thread.start
method, my run
method is not invoking.
I thought there could be a problem with my code
and
tested with
standalone java class. In standalone class I am
able
to send the mail.
So, I don't know why tomcat is rejecting the My
thread execution.
Any Ideas??
here is my code
// calling the thread
jiya.general.results.MailThread mailThread =new
jiya.general.results.MailThread();
mailThread.start();
//sending the mail
private void sendMail() throws JiyaException {
JiyaMailComponent jmc=new
JiyaMailComponent();
jmc.setServer(192.12.0.91);
jmc.setUser([EMAIL PROTECTED]);
jmc.setPassword(a);
jmc.setFromAddress([EMAIL PROTECTED]);
jmc.setContentType(text/plain);
jmc.setTo([EMAIL PROTECTED]);
jmc.setSubject(Some Subject);
jmc.setBody(test body);
jmc.send();
}
//this is inner class of My main class
class MailThread extends Thread implements
Runnable
{
public MailThread()
{
log(Entered here at mail thread
execution); // here I am to
see the log info in log file
}
public void run() {
try{
sendMail(); //not coming to this stage
}
catch(Exception ex) {
throw new RuntimeException(ex);
}
}
}
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Re: Help with a Class
Yep...simple example of a class as a wrapper around
the Integer class. Syntax way off and looks more like
you're trying to do it in a JSP page where you would
do it in a library. So surejust read a good java
book for syntax and maybe some of the java tutorial
and you can get all the info you need at java.sun.com
and www.java.net and if you need a good free IDE
www.netbeans.org. Don't know what else to say really.
Java uses patterns so you have methods setTest1 and
getTest1 which is what you would do in C++ with the
same pattern style for setters and getters as C++
doesn't have any simpler syntax than java for setters
and getters. Maybe to say java scripting languages
and EL in JSP pages let you access the properties
directly like
Integer temp2 = temp.test1
and
temp.test1 = new Integer(4)
so other than that I don't know what else to say
without trying to explain java itself.
Wade
--- Charles P. Killmer
[EMAIL PROTECTED] wrote:
Does Java provide any ability to do something like
the following. C#
and C++ both allow this functionlality and I am
hoping that Java does as
well
%!
public class myInteger {
private Integer _test1;
public Integer test1
{
set
{
_test1 = value;
}
get
{
return _test1;
}
}
}
%
%
myInteger temp = new myInteger;
temp.test1 = new Integer(4);
%
Charles
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please ignore...test
test - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: URLConnection.getOutputStream().write() fails
Not sure what you are trying to do here, but what you
are doing is attempting to POST to a text file. One
your TC server is probably only allowing a GET on the
.txt file as it will not process the .txt file, and
two you were probably wanting to perform a PUT
command(???), but you need to do things differently
all the way around. Were you trying to use the PUT
command? Were you trying to make POSTs?
Wade
--- Julian Salerno [EMAIL PROTECTED] wrote:
PROBLEM:
Trying to write to URL via
URLConnection.getOutputStream().write() fails.
In the main method below, the code attempts to write
some bytes to HYPERLINK
http://localhost:8080/temp/sample.txthttp://localhost:8080/temp/sample.txt
.
http://localhost:8080/temp/sample.txt; is
resolvable in a web browser and
actually points to:
${tomcat.home}/server/webapps/ROOT/temp/sample.txt
Executing main does not result in any bytes being
written.
Any input appreciated, thanks :-)
SERVER:
Apache Tomcat/4.0.1
Windows XP using Java 1.4.2_06
CLIENT CODE:
Windows XP using Java 1.4.2_06
public static void main(String[] args)
{
OutputStream os = null;
try
{
final String string =
http://localhost:8080/temp/sample.txt;;
URL url = new URL(string);
final URLConnection conn =
url.openConnection();
System.out.println(openConnection=+conn);
boolean doOutput =
conn.getDoOutput();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setAllowUserInteraction(true);
doOutput = conn.getDoOutput();
System.out.println(doOutput is
enabled:+doOutput);
final String data = Hello World;
conn.setRequestProperty(Content-length,
String.valueOf(data.length()));
os = conn.getOutputStream();
final BufferedOutputStream bos =
new
BufferedOutputStream(os);
System.out.println(bos='+bos+');
//now write some bytes
final byte[] bytes =
data.getBytes();
bos.write(bytes);
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
if(os != null)
{
try
{
os.flush();
os.close();
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
}
CLIENT-OUTPUT:
openConnection=sun.net.www.protocol.http.HttpURLConnection:http://localhost:
8080/temp/sample.txt
doOutput is enabled:true
bos='[EMAIL PROTECTED]'
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Version: 7.0.338 / Virus Database: 267.9.9/62 -
Release Date: 8/2/2005
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Checked by AVG Anti-Virus.
Version: 7.0.338 / Virus Database: 267.9.9/62 -
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Re: FW: URLConnection.getOutputStream().write() fails
Yes this is a PUT actually. A POST will simply send parameters to the server as a stream with the server some how making a process operate on the POST info (usually the file POST to such as a .jsp or a .php file) unless you have a special servlet for taking a POST and dumping the input stream to file and you stream up data directly. A PUT will actually put the contents directly to the file (or is the HTTP spec operation for it), and you have to tell the server you are attempting a PUT command. Using the URLConnection it isn't directly straight forward, and I would recommend using the Apache Commons HTTPClient to do this. And, yes you need to usually tell tomcat to allow PUTs as I am pretty sure by default this is turned offnot sure...but it's handled by the default servlet in Tomcat, or by any servlet you may want to setupbut for the default servlet basically you can control access in web.xml for your web application using a security constraintsee the servlet specification at url http://www.jcp.org/aboutJava/communityprocess/final/jsr053/ example from file.you won't need so much stuff... security-constraint web-resource-collection web-resource-nameSalesInfo /web-resource-name url-pattern/salesinfo/*/url-pattern http-methodGET/http-method http-methodPOST/http-method /web-resource-collection auth-constraint role-namemanager/role-name /auth-constraint user-data-constraint transport-guaranteeCONFIDENTIAL /transport-guarantee /user-data-constraint /security-constraint You should get the idea.you'll have a http-methodPUT/http-method and this can be used to control access to overwrite the information by certain users and not just everyone.good idea...for certain sections of your web applications and their data. See the servlet spec (PDF) and read about Realms and security in the Tomcat docs, and you should be able to get this going. I hope that helps some, Wade --- [EMAIL PROTECTED] wrote: Hi Wade :) Not sure what you are trying to do here, but what you are doing is attempting to POST to a text file. Correct. One your TC server is probably only allowing a GET on the .txt file as it will not process the .txt file, So, as a Tomcat newbie, is there a configuration I need to make at the server to allow posts to this directory ? And, do I need to set a request property on the URLConnection to tell the server that I want to do this ? and two you were probably wanting to perform a PUT command(???), but you need to do things differently all the way around. Were you trying to use the PUT command? Were you trying to make POSTs? The file already exists (It is created by another process on the server). I wish to POST (not PUT) data so that the resource (sample.txt) is updated with the contents I write from the client. Thanks Julian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: FW: URLConnection.getOutputStream().write() fails
You can also learn more about the default servlet here: http://jakarta.apache.org/tomcat/tomcat-5.5-doc/catalina/funcspecs/fs-default.html Hope it helps, Wade --- [EMAIL PROTECTED] wrote: Hi Wade :) Not sure what you are trying to do here, but what you are doing is attempting to POST to a text file. Correct. One your TC server is probably only allowing a GET on the .txt file as it will not process the .txt file, So, as a Tomcat newbie, is there a configuration I need to make at the server to allow posts to this directory ? And, do I need to set a request property on the URLConnection to tell the server that I want to do this ? and two you were probably wanting to perform a PUT command(???), but you need to do things differently all the way around. Were you trying to use the PUT command? Were you trying to make POSTs? The file already exists (It is created by another process on the server). I wish to POST (not PUT) data so that the resource (sample.txt) is updated with the contents I write from the client. Thanks Julian - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Basic load balancing
Joe Plautz wrote: From what I understand load balancing is done at the router, where clustering is a tomcat setup issue. Joe Faine, Mark wrote: Tomcat 5.0.28 We seem to often have to make minor changes that cause us to have to restart our tomcat server (the whole server, not just a web application) and this has lead me to decide to research load balancing. The idea would be to have two servers that would be exact duplicates. One of the servers would only become available when the other was not running. This way we could make the change on server2 (and restart it) and then bring server1 down and make the change to it as well. This would prevent any real downtime for our users. Where should I look for info on how to implement this type of failover? Thanks for your help -Mark - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] . - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] You can also use an Apache server as a front end to multiple servers/tomcats. I'm not talking about using mod_jk either, but using Apache as a traffic router. It works well, and you will be using mod_rewrite and/or mod_proxy. Check them out. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Where to put version information in war file?
Henri Dupre wrote: I was wondering what is the best place to put version information in a war file? I'd like to put a build version and date at built time to my application and have a way to retrieve them from the servlets. I'm used to add the META-INF Implementation-version tag with jar files but with Tomcat war files it doesn't work. Are there other standard places where to put version information? Henri. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] context-param is easy to access. You could put them in your web.xml file and access them from Servlets and JSPs. I'm not sure if there are any best pratices for it. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Form Based Authentication
I have form based authentication working. But, I need the login form to be a little more dynamic. For instance, I want to use different forms for different areas and not always use the same form. Is this possible? For instance, under one site I want to limit URLs to different logins. I realize I should just have a login and have a userid and a password, but my customer wants to simply have an access code to certain pages or directories. I would like to use form based authentication then I can have the userid as a hidden variable, and then have a password entered by the user, but for some admin screens I need the user to actually enter the userid and password both I hope that makes sense. I can't figure out how to setup a security constraint which can force a particular login form to be used if the user is not logged in yet. Thanks, Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Form Based Authentication
Wade Chandler wrote: I have form based authentication working. But, I need the login form to be a little more dynamic. For instance, I want to use different forms for different areas and not always use the same form. Is this possible? For instance, under one site I want to limit URLs to different logins. I realize I should just have a login and have a userid and a password, but my customer wants to simply have an access code to certain pages or directories. I would like to use form based authentication then I can have the userid as a hidden variable, and then have a password entered by the user, but for some admin screens I need the user to actually enter the userid and password both I hope that makes sense. I can't figure out how to setup a security constraint which can force a particular login form to be used if the user is not logged in yet. Thanks, Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Ok, So I think I should be able to do this with a filter, but I need some help. Basically it looks like I should be able to use a filter to some how get the original target before the authentication form is displayedis this correct? Basically I need to some how know when a particular URL pattern is being displayed or is attempted to be accessed...before the login form is displayed. When it is displayed I'll set an attribute in the request in the filters doFilter method. However, now I need to know how I can access the Request before the authentication mechanism takes over I suppose because from my login form accessing the getPathInfo() method is returning the login form information when I really need to know the actual path the user was attempting to access. So, can I use a filter to do this, and if so how do I make sure my filter is called in time to give me the information I need? Thanks, Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Java / Tomcat Job Abroad
Phillip Qin wrote: You will be disappointed if you immigrate to Canada. You will end up with driving a cab in best case senario. -Original Message- From: Aris Javier [mailto:[EMAIL PROTECTED] Sent: February 2, 2005 12:25 AM To: Tomcat Users List Subject: RE: Java / Tomcat Job Abroad Thanks Rhino for info. Yeah, big adjustment in climate... but that's one sacrifice I'm willing to take to make a living. =) -Original Message- From: Rhino [mailto:[EMAIL PROTECTED] Sent: Wednesday, February 02, 2005 1:13 PM To: Tomcat Users List Subject: Re: Java / Tomcat Job Abroad I think you'll find that there are Java jobs in Canada. I've seen some at monster.ca and workopolis.ca. I don't know about Tomcat jobs; I've never looked for Tomcat jobs. I hope you like living in large cities in a climate that is sometimes miserable (-40C in winter in Winnipeg for example) ;-) Rhino - Original Message - From: Aris Javier [EMAIL PROTECTED] To: Tomcat Users List tomcat-user@jakarta.apache.org Sent: Tuesday, February 01, 2005 8:52 PM Subject: OT: Java / Tomcat Job Abroad Hello! This is an out of topic question... Sorry, but since all of you guys are using Java and Tomcat, and are from different countries... im just wondering if i can land a job abroad? I'm planning to migrate to Canada, US, or New Zealand from here in Philippines... My skill is java programming (J2EE) and has 2 years experience. Is Java/Tomcat skill marketable in those countries i've mentioned? Or does anyone of you need a java programmer that i can apply? =) Thanks! Aris - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] !DSPAM:4200642b202291386719112! I'm in the U.S. and I love it. I spent 3 months in New Zealand, and I loved it there also. It's a very nice place. I came back to my beloved states though. I've lived in Tennessee and North Carolina, and was born in Tennessee. I like the climate around this region. It can get cold, but not too cold (sometimes it's below 0), and spring and summer are nice with a moderate fall/autumn. I find there seem to be plenty of opportunities in NC. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT]shared memory
Elihu Smails wrote: --- Wade Chandler [EMAIL PROTECTED] wrote: Elihu Smails wrote: I have a C based application running on the same box as tomcat, and I want to know if I would be able to access the shared memory segment using Java. The C program is setting up the shared memory using shmctl, and not using memory mapped files. I know that Java can support reading memory mapped files, but not memory that is set up using the shm* functions in C. Does anyone have any insight on this issue. I am hoping that JNI is not my only option. thank you. __ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Yep. JNI is your only solution. But, JNI isn't hard. You can use JNI and create a wrapper class by extending ByteBuffer. You might also find apache APR to be useful to help you out. Don't forget either that if you are going to run this application on different endian cpu's or endian emulated OS you'll have to reverse your byte order. There may already be a package for doing this out there some where (shared memory and reording at once). Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Thanks for getting back to me :) JNI is not that bad I agree, I just wish I could do this without JNI. As far as the endian issue, it will all be on the same box, so I am OK there. Do you know if JDK 1.5 has any new shared memory support in it? __ Do you Yahoo!? Yahoo! Mail - Easier than ever with enhanced search. Learn more. http://info.mail.yahoo.com/mail_250 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Not that I have read or heard about. It might though. If it isn't in the release documents then I seriously doubt it though. I know that doesn't help you any. :-( Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT]shared memory
Elihu Smails wrote: I have a C based application running on the same box as tomcat, and I want to know if I would be able to access the shared memory segment using Java. The C program is setting up the shared memory using shmctl, and not using memory mapped files. I know that Java can support reading memory mapped files, but not memory that is set up using the shm* functions in C. Does anyone have any insight on this issue. I am hoping that JNI is not my only option. thank you. __ Do you Yahoo!? Yahoo! Mail - Find what you need with new enhanced search. http://info.mail.yahoo.com/mail_250 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Yep. JNI is your only solution. But, JNI isn't hard. You can use JNI and create a wrapper class by extending ByteBuffer. You might also find apache APR to be useful to help you out. Don't forget either that if you are going to run this application on different endian cpu's or endian emulated OS you'll have to reverse your byte order. There may already be a package for doing this out there some where (shared memory and reording at once). Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: blackdown jvm 1.4.2_01. Tomcat won't start with jpda start parameter
Vano Beridze wrote: Hello I've got Gentoo Linux on amd 64 Blackdown jdk 1.4.2_01 java version 1.4.2-01 Java(TM) 2 Runtime Environment, Standard Edition (build Blackdown-1.4.2-01) Java HotSpot(TM) 64-Bit Server VM (build Blackdown-1.4.2-01, mixed mode) tomcat 4.1.31 I can't start tomcat with jpda start parameter. If I remove jpda it starts perfectly. Sun jdk 1.5.0_01 for amd 64 does not have that problem. Thank you Can you start other applications that way? Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: No response from Tomcat 5 when browser sends signed cookie
Leonard Sitongia wrote: More information: Looks like this is not related the the secure nature (digitally signed) of the cookie, but the size. A cookie over about 3k will trigger this problem. Also, it looks like Tomcat doesn't receive the request, so the problem may be in SSL. It is hard to tell, since it seems like it could be that Tomcat isn't logging in the part of the code that this is hitting. Is this a problem in Java SSL? Thanks for any help you can offer! ==Leonard On Jan 5, 2005, at 10:58 AM, Leonard Sitongia wrote: I have configured Tomcat 5.0.27 on the localhost to accept https connections (I have configured an unsigned cert under the alias tomcat to allow this). I can then get to the root Tomcat page at https://localhost:8443/. If my browser happens to have a signed cookie in it (this cookie is a signed S/MIME message that contains the signing certificate and so is 3765 bytes long - it is used by some homegrown Apache httpd apps that are unrelated to Tomcat), then Tomcat no longer responds on 8443. I can still get to the Tomcat root page with http://localhost:8080/, but when I try https://localhost:8443/ then Netscape 7 says document contains no data and Safari says bad server response (NSURLErrorDomain:-1011). Nothing is logged by Tomcat about this. There are no error messages at any time from Tomcat. My browser and server are on Mac OS X. I tried puting the signing cert that is used to sign the S/MIME message into the keystore for Tomcat. That didn't help. I don't know how to put the signing key into the keystore... maybe that's inadvisable anyway? Is this simply a matter of the size of the cookie, or will Tomcat try to do something with the cookie even though it is not intended to be used by any apps in Tomcat? What should I investigate and try to resolve this? Thanks for your help! ==Leonard E. Sitongia Web Engineering Group National Center for Atmospheric Research P.O. Box 3000 Boulder CO 80307 USA [EMAIL PROTECTED]voice: (303)497-2454 fax: (303)497-1804 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Don't know why it is happening, but seriously doubt it's Java SSL as SSL doesn't know squat about your cookie...SSL is a layer well below http and cookiesif you can send any amount over 3k to the socket, but just the cookies are barfing out the server, then it's something on the server side besides ssl. Are you using anything other than tomcat (i.e. a connector and apache, or is this straight tomcat?) this wasn't exactly clear I see where you are using the tomcat ports, but how did the issue start (by hitting tomcat contexts through apache?) Does this happen if you are not using https...when the cookie gets sent...will it hang http? If using Apache can you test it without apache and just use tomcat to see if it still hangs. The home grown httpd stuffis this standard cookies or http extension header type stuff, or something you came up with? Are you sure the cookies are being formatted correctly per the RFC's? Are they being delimited correctly \r\n? I don't know the answer...figured I would try to give you help in thinking about the issue. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Does anyone know this boy?
Jan Behrens wrote: Sorry, they were included in my original mail, looks like the list server deletes all attachments :( I have enclosed them again - this time packed in a single zip-file. Hopefully they pass now... Cheers, Jan -Original Message- From: Rhino [mailto:[EMAIL PROTECTED] Sent: Thursday, January 06, 2005 8:41 PM To: Tomcat Users List Subject: Re: [OT] Does anyone know this boy? Do you have a picture of this boy? That would help *enormously*; all you have now is the fact that he is two years old and an inference that he is not a Thai. Rhino - Original Message - From: Jan Behrens [EMAIL PROTECTED] To: 'Tomcat Users List' tomcat-user@jakarta.apache.org Sent: Thursday, January 06, 2005 1:47 PM Subject: [OT] Does anyone know this boy? Hi list, I know this is OT but I do believe that everyone out there should take the time to read this, if one does know him it will be worth more than all email in the world... Cheers, Jan PLEASE DO FOWARD TO YOUR INTERNATIONAL OPERATORS AND CONTACTS HE MUST HAVE BOUGHT IS TRIP IN SOME TRAVEL AGENCY IN EUROPE... Looking for his family. The boy about 2 years, from Khoa Lak is missing his parents. Nobody knows what country he comes from. If anybody known him please contact us by phone 076-249400-4 ext. 1336, 1339 or e- mail : [EMAIL PROTECTED] -- -- - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] post them on a public web server (yahoo works) and send the link. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: timeout when reading 401 response [was: persistent HTTP 1.1 connectionswith Tomcat 5.5.4?]
Garret Wilson wrote: So this is getting stranger. Just to preclude any error on my part, I did a simple loop that output every character received from the response. The HTTP response status line and headers come down fine, including the CRLF that separates the headers from the body. And then---timeout after 15 seconds. But the strange part is that if I connect using Firefox, I can view the entire response---an HTML document including the 401 status code. This document length is---you guessed it---952 bytes long, just like the Content-Length header says. Why can't I read the body from Java, yet Firefox can read it? Is there a bug with Channels.newInputStream()? Garret Garret Wilson wrote: It looks like the timeout is occurring when the first response is being read, so this changes the problem. I'm receiving a 401 Unauthorized response with the following headers: Server: Apache-Coyote/1.1 WWW-Authenticate: [...] Content-Type: text/html;charset=utf-8 Content-Length: 952 Date: Thu, 06 Jan 2005 19:47:43 GMT I try to read the 952 bytes, and that's when I get the 15-second hang before a timeout. The response is generated on the server with: response.sendError(401); Where are those 952 bytes, and why can't I read them, I wonder? Garret Garret Wilson wrote: Does Tomcat 5.5.4 support HTTP 1.1 persistent connections? I'm connecting to a Tomcat servlet from a custom Java client, and the first request/response goes fine: socketAddress=new InetSocketAddress(host, port); channel=SocketChannel.open(socketAddress); inputStream=new BufferedInputStream(newInputStream(channel)); outputStream=new BufferedOutputStream(newOutputStream(channel)); The response headers do *not* have a Connection: close header, which means the connection should stay open. The response is a 401 Unauthorized, so I place credentials in the request and send it again to the same output stream. Then I try to read another response from the same input stream. My program hangs until the connection times out. What the matter with persistent connections here? Thanks, Garret Actually what is happening is this You are using a buffered stream. It is reading past the amount returnedand then the tcp/ip socket is blocking because you have it open as a keep alive. You have to only read the number of bytes available and not keep trying to squeeze the blood out of the turnip... ;-) I'll almost bet you money that is what is happening. Try to not use a buffered input stream and see what you get. If I'm wrong I'm wrong let me know. Hope it works. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: timeout when reading 401 response [was: persistent HTTP 1.1 connectionswith Tomcat 5.5.4?]
Wade Chandler wrote: Garret Wilson wrote: So this is getting stranger. Just to preclude any error on my part, I did a simple loop that output every character received from the response. The HTTP response status line and headers come down fine, including the CRLF that separates the headers from the body. And then---timeout after 15 seconds. But the strange part is that if I connect using Firefox, I can view the entire response---an HTML document including the 401 status code. This document length is---you guessed it---952 bytes long, just like the Content-Length header says. Why can't I read the body from Java, yet Firefox can read it? Is there a bug with Channels.newInputStream()? Garret Garret Wilson wrote: It looks like the timeout is occurring when the first response is being read, so this changes the problem. I'm receiving a 401 Unauthorized response with the following headers: Server: Apache-Coyote/1.1 WWW-Authenticate: [...] Content-Type: text/html;charset=utf-8 Content-Length: 952 Date: Thu, 06 Jan 2005 19:47:43 GMT I try to read the 952 bytes, and that's when I get the 15-second hang before a timeout. The response is generated on the server with: response.sendError(401); Where are those 952 bytes, and why can't I read them, I wonder? Garret Garret Wilson wrote: Does Tomcat 5.5.4 support HTTP 1.1 persistent connections? I'm connecting to a Tomcat servlet from a custom Java client, and the first request/response goes fine: socketAddress=new InetSocketAddress(host, port); channel=SocketChannel.open(socketAddress); inputStream=new BufferedInputStream(newInputStream(channel)); outputStream=new BufferedOutputStream(newOutputStream(channel)); The response headers do *not* have a Connection: close header, which means the connection should stay open. The response is a 401 Unauthorized, so I place credentials in the request and send it again to the same output stream. Then I try to read another response from the same input stream. My program hangs until the connection times out. What the matter with persistent connections here? Thanks, Garret Actually what is happening is this You are using a buffered stream. It is reading past the amount returnedand then the tcp/ip socket is blocking because you have it open as a keep alive. You have to only read the number of bytes available and not keep trying to squeeze the blood out of the turnip... ;-) I'll almost bet you money that is what is happening. Try to not use a buffered input stream and see what you get. If I'm wrong I'm wrong let me know. Hope it works. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] See the read method of the SocketChannel...as I'm sure it will be getting called by the InputStream wrapper from the object. Don't think about trying to make the SocketChannel so that isBlocking returns false either because if all the data isn't there and it isn't blocking and the buffer doesn't have any data (at that exact moment you make a call) it will return as if it had read all of the data and then you'd be messed up that way to. I'm writing this all assuming you are using keep alives. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: timeout when reading 401 response [was: persistent HTTP 1.1 connectionswith Tomcat 5.5.4?]
Wade Chandler wrote: Wade Chandler wrote: Garret Wilson wrote: So this is getting stranger. Just to preclude any error on my part, I did a simple loop that output every character received from the response. The HTTP response status line and headers come down fine, including the CRLF that separates the headers from the body. And then---timeout after 15 seconds. But the strange part is that if I connect using Firefox, I can view the entire response---an HTML document including the 401 status code. This document length is---you guessed it---952 bytes long, just like the Content-Length header says. Why can't I read the body from Java, yet Firefox can read it? Is there a bug with Channels.newInputStream()? Garret Garret Wilson wrote: It looks like the timeout is occurring when the first response is being read, so this changes the problem. I'm receiving a 401 Unauthorized response with the following headers: Server: Apache-Coyote/1.1 WWW-Authenticate: [...] Content-Type: text/html;charset=utf-8 Content-Length: 952 Date: Thu, 06 Jan 2005 19:47:43 GMT I try to read the 952 bytes, and that's when I get the 15-second hang before a timeout. The response is generated on the server with: response.sendError(401); Where are those 952 bytes, and why can't I read them, I wonder? Garret Garret Wilson wrote: Does Tomcat 5.5.4 support HTTP 1.1 persistent connections? I'm connecting to a Tomcat servlet from a custom Java client, and the first request/response goes fine: socketAddress=new InetSocketAddress(host, port); channel=SocketChannel.open(socketAddress); inputStream=new BufferedInputStream(newInputStream(channel)); outputStream=new BufferedOutputStream(newOutputStream(channel)); The response headers do *not* have a Connection: close header, which means the connection should stay open. The response is a 401 Unauthorized, so I place credentials in the request and send it again to the same output stream. Then I try to read another response from the same input stream. My program hangs until the connection times out. What the matter with persistent connections here? Thanks, Garret Actually what is happening is this You are using a buffered stream. It is reading past the amount returnedand then the tcp/ip socket is blocking because you have it open as a keep alive. You have to only read the number of bytes available and not keep trying to squeeze the blood out of the turnip... ;-) I'll almost bet you money that is what is happening. Try to not use a buffered input stream and see what you get. If I'm wrong I'm wrong let me know. Hope it works. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] See the read method of the SocketChannel...as I'm sure it will be getting called by the InputStream wrapper from the object. Don't think about trying to make the SocketChannel so that isBlocking returns false either because if all the data isn't there and it isn't blocking and the buffer doesn't have any data (at that exact moment you make a call) it will return as if it had read all of the data and then you'd be messed up that way to. I'm writing this all assuming you are using keep alives. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] And one more tad bit If you really need to use buffering in this case it might make sense to do that in your read loop yourself so you can control the max number of bytes read...that or make a buffered input stream which you can set the max number of bytes to read into the buffer forover all max number that is. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: solved: timeout when reading 401 response [was: persistent HTTP1.1 connectionswith Tomcat 5.5.4?]
Garret Wilson wrote: Wade Chandler wrote: Actually what is happening is this You are using a buffered stream. It is reading past the amount returnedand then the tcp/ip socket is blocking because you have it open as a keep alive. You have to only read the number of bytes available and not keep trying to squeeze the blood out of the turnip... ;-) I'll almost bet you money that is what is happening. Try to not use a buffered input stream and see what you get. If I'm wrong I'm wrong let me know. Hope it works. Wade, thanks so very much for responding. I was sitting here dumbfounded wondering what in the world could be happening. But you're wrong. ;) I had already thrown out the BufferedInputStream to eliminate that. I switched to straight sockets. I set up a simple loop that simply read bytes until receiving a timeout. The timeout occurred after the CRLF divider, even though the Content-Length said 952. Accessing the site from Firefox showed all the content. Puzzled? Yeah, so was I. Then I realized that in my Java client I was testing my new HTTP routines with the HEAD method! (You can start the ridicule, now...) The whole point of the HEAD method is that it doesn't send content---it simply sends a Content-Length indicating how long the content would have been. In fact, RFC 2616 says that the server MUST NOT return a message-body in the response for the HEAD method (9.4). Now, what threw me off is that the response was an error status, a 401 Unauthorized. The Content-Length is in line with the spec, returning the length of the content which would have been returned if a GET had been used. As an error was returned, however, the Content-Length was returning the length of the error message---the error message that would have been returned had a GET been used. Now, all this is technically to the letter of RFC 2616, but I wonder what would happen if a server were to send back a 405 Method Not Allowed for HEAD. There would be no way to get at the error message, because HEAD doesn't send back content. Using GET would succeed, so technically the Content-Length of HEAD in this case wouldn't be the content length of a response from GET. I'm thinking that RFC 2616 should probably have made an exception to the no content rule for HEAD when an error condition is being reported. But that's the least of my worries. I just need to tell my client to ignore all content in a response to HEAD. Oddly, though, this means that a thread can't simply pull HTTP responses down from a persistent connection without knowing to which request each response belongs---i.e. whether to trust the Content-Length or not! In any case, thanks for the input. It looks like your responses will be useful when I finally switch over to non-blocking I/O support. Garret - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] lol. I won't ridiculewe all make the mistakes that make us go... (Homer Simpson)..DOH Glad you got it resolved. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Handling HEAD request in servlet
Tennessee Leeuwenburg wrote: Hi guys, I have a problem where the default implementation of HttpServlet doesn't seem to be handling doHead(request, response) properly. I over-rode the method, and found the damndest thing happening. The line response.setContentLength(length) is just getting completely ignored. I can't work it out - it's like the response object is deliberately preventing me from setting the content-length. I tried setHeader(Content-Length, length) just in case but still no joy. Note - this is a repost - the tomcat-dev people said I should post here, despite this relating to development issues rather than install or deployment problems, so please don't shoot me! I worked around the problem by using out.println(Content-Length: length) instead, but it's still bad that setContentLength() doesn't work, I think. Help!? Please! - Here's the code snippet : FileInputStream inStream = null; inStream = new FileInputStream(ncFile); int length = (int)ncFile.length(); response.setStatus(response.SC_PARTIAL_CONTENT); response.setHeader(Accept-Ranges, bytes); response.setContentLength(length); response.setHeader(Content-Length-Mimic, +(int)ncFile.length()); response.setHeader(Impossible, + length); response.setContentType(contentType); out.flush(); Here's what I get back via telnet : HTTP/1.1 206 Partial Content Date: Thu, 06 Jan 2005 05:07:22 GMT Server: Apache/2.0.50 (Ubuntu) mod_jk2/2.0.4 Set-Cookie: JSESSIONID=3D6C4C6EBE1AB1672E40C2933243BA3B; Path=/marslet Accept-Ranges: bytes Content-Length-Mimic: 36903060 Impossible: 36903060 Content-Type: application/x-netcdf Keep-Alive: timeout=15, max=100 Connection: Keep-Alive - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Yeah, you should have seen another message between me and another guy. lol. Anyways, head responses can't have a length as they are only a header. So basically all you can send back in a head request is the header and the header won't have a lengthread the headers until you get an empty lineif that's what you are needing to do (client stuff)...server side...you can't really do anything with the head request but send headers. I guess you can send a header for a redirect to a different page if needed. So I'm sure tomcat is wiping it all out for you ... as it should be technically per the specification. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Handling HEAD request in servlet
Tennessee Leeuwenburg wrote: Glad to find another human! :) From the spec, it looked like there should be a content-length, but maybe you're right. I'm writing a server for a client that expects the content-length to be there. As I said, I did find a workaround by just printing to the output stream, but it had me baffled for a while. Lucky everyone is still on holidays, there was some swearing going on :)... Cheers, -T Yeah, you should have seen another message between me and another guy. lol. Anyways, head responses can't have a length as they are only a header. So basically all you can send back in a head request is the header and the header won't have a lengthread the headers until you get an empty lineif that's what you are needing to do (client stuff)...server side...you can't really do anything with the head request but send headers. I guess you can send a header for a redirect to a different page if needed. So I'm sure tomcat is wiping it all out for you ... as it should be technically per the specification. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] No I think you should be able to set the header..Tomcat does it for me on my home directory index.html file. Here is the output from the head operation... HTTP/1.1 200 OK ETag: W/697-1078786629000 Last-Modified: Mon, 08 Mar 2004 22:57:09 GMT Content-Type: text/html Content-Length: 697 Date: Fri, 07 Jan 2005 06:14:26 GMT Server: Apache-Coyote/1.1 Connection: close That from my Tomcat 5.0.28 ~useraccount index.html file. I used w3m to perform a head. and this from a zip file I had in there HTTP/1.1 200 OK ETag: W/1169293-108481176 Last-Modified: Mon, 17 May 2004 16:36:00 GMT Content-Type: application/zip Content-Length: 1169293 Date: Fri, 07 Jan 2005 06:18:19 GMT Server: Apache-Coyote/1.1 Connection: close Which makes sense...why else would one want HEAD in the first place if not to examine the data a tad before trying to grab it. Maybe don't try to set the content and just try to set the header itself without calling the method to set the content? Have you already tried thatsetting the header and leaving the content property alone? Maybe you are calling something else after setting the header that is clearing it out? Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Speed issues with SQL Server 2000 and JTDS
Charles P. Killmer wrote:
Thanks. I had already done this but maybe not communicated them as
concisely.
Thanks
Charles
-Original Message-
From: Parsons Technical Services [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 04, 2005 6:23 PM
To: Tomcat Users List
Subject: Re: Speed issues with SQL Server 2000 and JTDS
Trying a few test should help you narrow things down a bit.
1. Run without DB connection. (Done runs fast)
2. Run with a DB connect but no query. (Done runs slow)
3. Run with a simple query and do nothing with it.
4. Run with a simple query and post results in page. Only move forward
through result set.
5. Run with a simple query and post results in page. Move around in the
result set (Only if you do this in your page).
At some point in these test you should see a dramatic jump in the
response time. If it is a steady climb, then you may have multiple
issues.
Report back what you find and we'll make suggestions from there.
Doug
- Original Message -
From: Charles P. Killmer [EMAIL PROTECTED]
To: Tomcat Users List tomcat-user@jakarta.apache.org
Sent: Tuesday, January 04, 2005 11:23 AM
Subject: RE: Speed issues with SQL Server 2000 and JTDS
Could this speed issue be caused by a poor setup? When I remove the
database connection from my code, the pages run fast. Though I
obviously need the database portion of the code in there.
Thanks
Charles
-Original Message-
From: David Boyer [mailto:[EMAIL PROTECTED]
Sent: Monday, January 03, 2005 9:05 AM
To: tomcat-user@jakarta.apache.org; Charles P. Killmer
Subject: RE: Speed issues with SQL Server 2000 and JTDS
You could try using something like jProfiler to see where the bottleneck
is.
I don't see anything unusual in your code example, although it looks
like the only thing it does is create the connection. I use jTDS and it
works fine without doing anything exceptional.
[EMAIL PROTECTED] 01/03 8:55 am
This is some representative code that is being very slow.
import java.sql.*;
public class SomeClass {
public Connection conn;
public int ID;
public String Name;
public String Address;
public String City;
public String OtherStuff;
public SomeClass() throws Exception {
try {
Class.forName(net.sourceforge.jtds.jdbc.Driver);
} catch (ClassNotFoundException ex) {
}
try {
conn =
DriverManager.getConnection(jdbc:jtds:sqlserver://111.222.333.444:1433/
someDB;user=someuser;password=somepassword);
} catch (Exception e) {
throw e;
}
}
public int Audit() throws Exception {
return 5;
}
public ResultSet GetData() throws Exception {
ResultSet rs = null;
return rs;
}
public int DeleteSomething() throws Exception {
return 2;
}
}
I don't have anything special in any XML files. I will try to make my
code work like yours is. But if someone has an idea why the way I have
it written is slow, I would love to hear it.
Thank You
Charles
-Original Message-
From: Randall Svancara [mailto:[EMAIL PROTECTED]
Sent: Monday, January 03, 2005 8:20 AM
To: Tomcat Users List
Subject: RE: Speed issues with SQL Server 2000 and JTDS
I have been using JTDS with SQL Server 2000 in conjunction with Tomcat
without any problems. Perhaps if you post some your database connection
code, someone could provide you with assistance. You might also try
posting to the JTDS Mailing list. Are you using Database Connection
Pooling (DBCP)??
I am including an example the code I use to access a stored procedure on
SQL Server 2000 using DBCP.
/* Here are the things I import */
import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.naming.*;
import javax.sql.*;
Public class SomeClass{
* A public class that returns an Applicant object
* @return the applicant as applicant
*/
public Applicant SomeApplicantMethod(){
Applicant app = new Applicant();
Connection conn = null;
Statement stmt = null;
ResultSet rst = null;
try{
Context ctx = new InitialContext(); /* Declare initial
context */
if(ctx == null ){
logger.error(Error creating new context for some
reason);
throw new Exception(No context);
}
/* Throw an exception if it is null */
DataSource ds =
(DataSource)ctx.lookup(java:comp/env/jdbc/summitexec);
conn = ds.getConnection();
if(conn != null) {
stmt = conn.createStatement();
rst = stmt.executeQuery(sp_SelectApplicant +
canidateid);
while(rst.next()){
// Add result set to applicant object,
NOT SHOWN HERE!!!
}
//Make sure you close everything, else you end up
with object leaks
if(stmt != null){
stmt.close();
}
if(rst != null){
rst.close();
}
if(conn != null){
Re: Tomcat run as a daemon: Is jsvc reliable?
Matteo Turra wrote: Hi, does anybody know if jsvc included in tomcat 5.0.28 is reliable for production environment? Thanks, Matteo. -- A very merry Christmas And a happy New Year Let's hope it's a good one Without any fear -- John Lennon _ Matteo TURRA mail: [EMAIL PROTECTED] Analisi sviluppo WEB tel: +39 051 61.11.430 KION Srl web: www.kion.it Via Cristoni, 86 tel: +39 051 61.11.411 40033 Casalecchio di Reno (BO) fax: +39 051 57.04.23 ITALIA _ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] You need to get the version out of cvs from the commons-daemon project and build it yourself. We just had a run over this recently, so you should be able to find talk about it in last months archive or this one. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: jsvc alternatives?
Michael Kastner wrote: Hello, it seems like jsvc runs very unstable on my linux system. Does anybody know any alternatives to jsvc? Greetings Michael Kastner - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Did you see the recent post from Bill Barker to a reply I gave to another list member? He talked about the version of code for jsvc shipping with Tomcat as being very buggy. I just glanced at the release 1.0 code that I had posted about, Bill suggested downloading from the common daemon cvs to get some better code. There isn't that much to the code really, so if you are able maybe it would be easier to get that code, build it, see if it works, and if it doesn't to fix it. I haven't used it yet, but have been planning on it. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: JVM Crash
Mark wrote: I googled around and here some good(?) news, at least somebody get around the problem: http://forum.java.sun.com/thread.jspa?threadID=307252tstart=210 on of solution is : -- cut -- now I use jdk1.3.1_06 with hospot -server and it works perfectly (and faster) -- end cut --- another one was a hardware problem: -- cut -- Some part of the computer seemed to be not compatible with the FSB133 standard. So I reduced the system to FSB100. No signal 11 since that time :- -- end cut -- and here another issue with java: -- cut -- In this case, it was happening during the compilation of a reasonably large JSP. A colleague found out that there was a known issue with this version of javac compiling large methods (64Kb), which tends to happen when you have a large JSP getting compiled into a single service() method. -- end cut -- --- Amit Gupta [EMAIL PROTECTED] wrote: I am facing similar problem on user mode Linux. Amit Gupta Mobile: 91-9818052171 Yahoo IM: amitguptainn MSN IM : amitguptainn -Original Message- From: Rodrigo Schmidt [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 28, 2004 5:05 PM To: Tomcat Users List Subject: Re: JVM Crash Amit, I am using a dedicated server. Rodrigo Amit Gupta wrote: You are using User mode Linux or dedicated server? Amit Gupta Mobile: 91-9818052171 -Original Message- From: Rodrigo Schmidt [mailto:[EMAIL PROTECTED] Sent: Monday, December 27, 2004 11:18 PM To: tomcat-user@jakarta.apache.org Subject: JVM Crash Hello all, I deployed Atlassian Jira Enterprise 3.0.3 in Tomcat 5.0.28 and I experienced two random JVM crashes in a period of one month. The strange part is that the crashes occured when the application was at a very low load, doing almost nothing. I searched the archives for this topic, but I still can't figure out what could have caused these crashes. I have no idea whether they are related to Jira, Tomcat, J2SDK or RedHat. I would like to isolate the problem, so that I can ask the proper vendor for support. Below I will post information about my system and the JVM error logs, sorry for the long message. Any help is greatly appreciated, thanks a lot. Rodrigo System: Linux 2.4.21-4.EL #1 Fri Oct 3 18:13:58 EDT 2003 i686 i686 i386 GNU/Linux Red Hat Enterprise Linux AS release 3 (Taroon) Tomcat 5.0.28 java version 1.4.2_06 Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_06-b03) Java HotSpot(TM) Server VM (build 1.4.2_06-b03, mixed mode) JAVA_OPTS=-server -Xmx512m 1GB RAM CPU: Intel(R) Pentium(R) 4 CPU 2.40GHz stepping 09 Error log 1: Unexpected Signal : 11 occurred at PC=0xB7289E78 Function=(null) Library=/usr/local/j2sdk1.4.2_06/jre/lib/i386/server/libjvm.so NOTE: We are unable to locate the function name symbol for the error just occurred. Please refer to release documentation for possible reason and solutions. Current Java thread: at java.lang.String.intern(Native Method) at java.lang.Class.searchMethods(Class.java:1877) at java.lang.Class.getDeclaredMethod(Class.java:1262) at org.apache.commons.logging.impl.LogFactoryImpl.isJdk14Available(LogFactoryImpl.java:489) at org.apache.commons.logging.impl.LogFactoryImpl.getLogClassName(LogFactoryImpl.java:331) at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:368) at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529) at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235) at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209) at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351) at org.apache.commons.beanutils.ConvertUtilsBean.init(ConvertUtilsBean.java:130) at org.apache.commons.beanutils.BeanUtilsBean.init(BeanUtilsBean.java:110) at org.apache.commons.beanutils.BeanUtilsBean$1.initialValue(BeanUtilsBean.java:68) at org.apache.commons.beanutils.ContextClassLoaderLocal.get(ContextClassLoaderLocal.java:80) - locked 0x925030d0 (a org.apache.commons.beanutils.BeanUtilsBean$1) at org.apache.commons.beanutils.BeanUtilsBean.getInstance(BeanUtilsBean.java:78) - locked 0xaeeb91a0 (a java.lang.Class) at org.apache.commons.beanutils.ConvertUtilsBean.getInstance(ConvertUtilsBean.java:115) at org.apache.commons.beanutils.ConvertUtils.convert(ConvertUtils.java:217) at org.apache.commons.digester.CallMethodRule.end(CallMethodRule.java:457) at org.apache.commons.digester.Rule.end(Rule.java:276) at org.apache.commons.digester.Digester.endElement(Digester.java:1058) at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source) at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) at
Re: jsvc alternatives?
Wade Chandler wrote: Michael Kastner wrote: Hello, it seems like jsvc runs very unstable on my linux system. Does anybody know any alternatives to jsvc? Greetings Michael Kastner - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Did you see the recent post from Bill Barker to a reply I gave to another list member? He talked about the version of code for jsvc shipping with Tomcat as being very buggy. I just glanced at the release 1.0 code that I had posted about, Bill suggested downloading from the common daemon cvs to get some better code. There isn't that much to the code really, so if you are able maybe it would be easier to get that code, build it, see if it works, and if it doesn't to fix it. I haven't used it yet, but have been planning on it. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Just noticed by reading another message you did just that. Sorry for the late and un-needed post. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: ANN: Tomcat for RiA (Rich Internet Application) example live. [OT]
Vic wrote: check out boardVU.com (only in IE for now). Tomcat is hosting Hessian + iBatis as services to JNLP for JDNC (RiA) application at above. So ... tomcat does not have to be just browser dhtml apps (try that PHP!) .V OT I do something similar. I have a package I wrote I call JMapMethods. It's easier than RMI and doesn't use SOAP like Axis, plus it's a lot easier than Axis, yet not as portable to remote applications considering I use serialized java objects, though it doesn't have to, which is nice...one could use something to serialize to XML and then other languages could use it. I made a map like class housing a HashMap underneith for the method call data. I have a client and a controller side. Every class has a client and a controller. The parameters are wrapped up in serialized maps and sent to the backend, and the return is always a JMapMethodData object. It's up to each client/controller combo to decide how best to know which method to call. I usually use Strings with method names in the map...just easier to debug. I thought about taking the framework and breaking out the specific bits and giving it to some open source. Anyways, the coolest part of it's design is that it's simple. It's secured with logins and interfaces and the works. Yet doesn't really have many complex pieces to get going with. One can take a base setup and have remote methods and local methods being called in minutes. The way the client and controller model is setup I have a LocalJMapMethodCaller and I also have an HttpJMapMethodCaller. The client uses the caller to make the method calls. JMapMethodCaller is an interface, so I guess you can see where I'm going with thatyou can write one application and run it stand alone or over the internet as long as you don't count on certain things likeobject references consistantly pointing to the same object. So, except for pieces that require file operations and threads it's all the same application. A simple test of whether or not if it's stand alone or internet based and you know if you have to send the file or large data to the backend. I built in zip capabilities, large multi-threaded/cross-server capabilites...the works all event driven for large operation watching. It's scalable basically. For instance, I have event handlers for a class which can zip and send a file to the backend. The directory can be a network drive it is stored on, and status is kept in a database. I call a method telling it what file to zip, where to send it, and to extract it. It does all of this automatically and my ui gets updated by a thread watching the event handler. So theirs another idea to go along with that type of a concept. Anyways, I hate browsers. They just don't have near as much functionality...like try to browse through a large list of data with a browser compared to a JTable...or try to manage a large amount of data remotely using a browser doing something like data entry or accounting...ick...I hate that. With java you can have a rich interface and still have a nice web appdeserialize the object and set parameters. It works like a charm. Maybe one day I'll actually get around to breaking it out enough so it can be a stand alone package and I can allow it to be used by others. If I do or don't...Java rulesof course don't forget you could always use SOAP, XML-RPC, or just use XML through PHP for the data and what not and do the same thing using a java front end for the PHP, or use ASP.net, ISAPI dlls, cgi (perl or C)...you name it. Though it makes more sense to use java on both ends:-P /OT Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Forwarding *all* webapps with mod_jk
Mladen Turk wrote: Simon MARTIN wrote: Hi, I've integrated Tomcat successfully into Apache using mod_jk, but there's something I've found nothing about: forwarding *all* webapps with only one static statement in the configuration files. I've thought about something like this: JkMount /tomcat/* ajp13:* (which of course is wrong I know) You can use the mod_rewrite: RewriteEngine On RewriteRule ^/tomcat/(.+)$ /$1 [R,L] JkMount /* ajp13 But this will map everything to the tomcat. You can not do (for now): /tomcat/examples/* - /examples/* and then back to: /examples/* - /tomcat/examples/* This would require that mod_jk when forwarding the request to Tomcat strips the '/tomcat' from the URL, and then after receiving the response add the '/tomcat' prefix to the url. Of course you will be forced to use only the relative url's inside your application, so the usage is dubious. Mladen. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Could he not do something like this...doesn't mod_jk now have the mod_jk2 stuff in it? I do this in mod_jk2 in the workers2.properties file #this will allow all rsg servlets to be run through tomcat. [uri:/*.jrsg] info=jrsg (extension for RSG controller servlets) context=/ I give all of my servlets an extension in their name. Though I assume this could be done like: #this will allow all rsg servlets to be run through tomcat. [uri:/*servlet*] info= for all servlets in a servlet directory context=/ I then make sure that the native server has the same context/path what ever you want to call it as the tomcat web app will have. This means the url path will be correct for both servers. If I have /someapp in Apache or IIS then my webapp name will be /someapp and /someapp/servlets will house the servlets Can he not do something like this in mod_jk? What would the equivalent be? Also, if he isn't using the version of mod_jk which has the mod_jk2 stuff merged in, I would still like to know if the merged version still has this capability? Hope that might help, and thanks for any other info given to the list of a similar nature on the same topic. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Session restart replication when using jsvc
Trond G. Ziarkowski wrote:
Hi Wolfgang!
by using signal 9 you give Tomcat no chance to perform any further
action. Maybe you omit -9 from your kill command.
Thanks for the tip. Tried it, but same results.
Trond
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Hmmm. Here is the source code of the jsvc-unix.c which is called upon a
signal.
static void handler(int sig) {
switch (sig) {
case SIGTERM: {
log_debug(Caught SIGTERM: Scheduling a shutdown);
if (stopping==true) {
log_error(Shutdown or reload already scheduled);
} else {
stopping=true;
}
if (handler_trm!=NULL) (*handler_trm)(sig);
break;
}
case SIGINT: {
log_debug(Caught SIGINT: Scheduling a shutdown);
if (stopping==true) {
log_error(Shutdown or reload already scheduled);
} else {
stopping=true;
}
if (handler_int!=NULL) (*handler_int)(sig);
break;
}
case SIGHUP: {
log_debug(Caught SIGHUP: Scheduling a reload);
if (stopping==true) {
log_error(Shutdown or reload already scheduled);
} else {
stopping=true;
doreload=true;
}
if (handler_hup!=NULL) (*handler_hup)(sig);
break;
}
default: {
log_debug(Caught unknown signal %d,sig);
break;
}
}
}
So, from the text I would assume SIGINT and SIGTERM should perform the
same shutdown behavior, but you can try to use
kill -s SIGTERM pid
or
kill -s SIGINT pid
and see what results you get. If it isn't behaving correctly then you
need to maybe
1) You might want to make sure you don't have the serialization of
session turned off some how...is it behaving correctly if you don't use
jsvc?
2) You are using the right tomcat class to start it up...surely or you
should get an errorI would imagine anywaysso maybe forget
this altogether.
3) You might want to search the tomcat source code for the Daemon
implementer class and locate the method stop to see if you can figure
out if it is being called. It should be I would imagine since tomcat is
stopping, but if it is not, then I guess it's a Daemon/jsvc error and
you need to talk to that list. On another note same subject.You can
look in the daemon src at the file /src/native/unix/native/java.c and
you could put some code into the java_stop function to see if you can
figure out if the function is going to call (through jni) the Daemon
stop method correctly or not. REMEMBER: The Daemon startup code does
not force the class used as a Daemon to actually implemnt the interface
through source code, but the class can simply have the correct
methods.only know this because of the source code not any
docsdon't know if Tomcat does this or not.
4) You might look in your jsvc error file...where ever you have put it
and look for the text 'Cannot stop daemon' or 'Cannot found Daemon
Loader stop entry point'that mis type of Cannot foundis really
in the logging of the 1.0 release source code. Because even though you
get this text and tomcat goes awaythe method to stop may not have
been found and the jsvc process is going to kill the JVM anyways.
Hope some of that helps
Wade
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Re: FW: j2sdk problems
Warron French wrote: That's the problem, the j2sdk/jboss services fail after about a week and there is no log entries in the /var/log/mod_jk.log file. Or anywhere else I mentioned in my original email. Merry Christmas Happy New Year! Warron French Sr. Network Engineer Xtria, LLC 8045 Leesburg Pike #400 Vienna, VA 22182 Desk: 703-821-6110 Main: 703-821-6000 Fax: 703-827-0374 Do you have any information about your memory usage on your computer? Do you know which version of Tomcat it is in the JBoss distro? Which version of mod_jk/2? Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Changing Stack Size in Tomcat 4.130
Sweta Kapadia wrote: Hi, How would I go about increasing the stack size in Tomcat? Im gettig a StackOverflowError, thanks in advance. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] A lot of times when I see this I think about a loop running out of control. Are you getting this from tried and true code, and are you getting this when you are debugging (so to see what is going on)? Maybe put in some logging and things before you have to rearrange the stack size. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Changing Stack Size in Tomcat 4.130
Wade Chandler wrote: Sweta Kapadia wrote: Hi, How would I go about increasing the stack size in Tomcat? Im gettig a StackOverflowError, thanks in advance. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] A lot of times when I see this I think about a loop running out of control. Are you getting this from tried and true code, and are you getting this when you are debugging (so to see what is going on)? Maybe put in some logging and things before you have to rearrange the stack size. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] That being a recursion loopbe sure you check for that. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Query on Upgrade of tomcat 4.0.6 to 5.0.x
Murthy Tetali wrote: Hi, We would like to upgrade our production Tomcat Server from 4.0.6 to 5.0.x Our application is higly multi-threaded, having 2000 concurrent users. This Application is running on tomcat 4.0.6 from last 2 years without any problem. I will be looking forward for your recommendation/suggestions for more stable tomcat 5.0.x version and is appreciated. Thanks Regards Satish - Do you Yahoo!? Dress up your holiday email, Hollywood style. Learn more. Well, If I wasn't having any problems,and I did not have any real reason to upgrade then I would stay confortably where I am at. If, however, you are doing this because you want to move up in the servlet spec or jsp spec, and have been planning on doing so then I would go ahead and move to 5.0.28 or .29. I've been using 5.0.28 for a while now without having any issues. I've been happy with it. Of course I go by the adage: If it isn't broken don't fix it. So, if I didn't have any better reason to upgrade tomcat other than it's a newer version and I have been running happily for 2 years.I would stay right where I'm at. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: JVM Crash
Rodrigo Schmidt wrote: snip Local Time = Sun Dec 26 13:39:24 2004 Elapsed Time = 437787 # # HotSpot Virtual Machine Error : 11 # Error ID : 4F530E43505002EF # Please report this error at # http://java.sun.com/cgi-bin/bugreport.cgi # # Java VM: Java HotSpot(TM) Server VM (1.4.2_06-b03 mixed mode) # /snip From the logs it looks like some code is exploiting a bug in the JVM. The first place I would search is the JVM bug database... http://bugs.sun.com/bugdatabase/index.jsp See if you can find anything relative to the information given. Also look for the error id. The next thing to do if you do not find the bug is to report it. You can find other options to fix the issue here: http://bugs.sun.com/services/bugreport/index.jsp Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: JVM Crash
Wade Chandler wrote: Rodrigo Schmidt wrote: snip Local Time = Sun Dec 26 13:39:24 2004 Elapsed Time = 437787 # # HotSpot Virtual Machine Error : 11 # Error ID : 4F530E43505002EF # Please report this error at # http://java.sun.com/cgi-bin/bugreport.cgi # # Java VM: Java HotSpot(TM) Server VM (1.4.2_06-b03 mixed mode) # /snip From the logs it looks like some code is exploiting a bug in the JVM. The first place I would search is the JVM bug database... http://bugs.sun.com/bugdatabase/index.jsp See if you can find anything relative to the information given. Also look for the error id. The next thing to do if you do not find the bug is to report it. You can find other options to fix the issue here: http://bugs.sun.com/services/bugreport/index.jsp Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Looking at the bugreports it looks like you might try to drop the -server from your startup and see if you can at least stay up and running. All the bug reports I saw for this error were caused by the server vm. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: JVM Crash
Rodrigo Schmidt wrote: Hi Wade, thanks for your reply. I already reported the bug, but they can take a long time to send an answer. Searching the bug database I found some posts that reported the problem happening with the client vm as well. I am considering trying another vm. I've just tested BEA JRockit 1.4.2_05, but it seems that Jira doesn't like it that much, or vice-versa : ) So, does anyone has experience with Tomcat 5.0.x running on JDK 1.5? Are there performace/stability issues? Thanks in advance, Rodrigo Wade Chandler wrote: Wade Chandler wrote: Rodrigo Schmidt wrote: snip Local Time = Sun Dec 26 13:39:24 2004 Elapsed Time = 437787 # # HotSpot Virtual Machine Error : 11 # Error ID : 4F530E43505002EF # Please report this error at # http://java.sun.com/cgi-bin/bugreport.cgi # # Java VM: Java HotSpot(TM) Server VM (1.4.2_06-b03 mixed mode) # /snip From the logs it looks like some code is exploiting a bug in the JVM. The first place I would search is the JVM bug database... http://bugs.sun.com/bugdatabase/index.jsp See if you can find anything relative to the information given. Also look for the error id. The next thing to do if you do not find the bug is to report it. You can find other options to fix the issue here: http://bugs.sun.com/services/bugreport/index.jsp Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Looking at the bugreports it looks like you might try to drop the -server from your startup and see if you can at least stay up and running. All the bug reports I saw for this error were caused by the server vm. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I'm not sure if version 5.0.x will run with JDK1.5 or not. I think I've seen where it will not. I might be wrong. It might have been 5.5.x won't run on 1.4.x vms If I were you I would try not specifying server and at least see how it behaves before I tried something else. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Automated reply from bulletproof@www.bulletproofsoft.com
[EMAIL PROTECTED] wrote: BulletProofSoft.com Support Ticket Reply. DO NOT REPLY TO THIS EMAIL Please use our Online Support system for faster results to your questions. You can monitor the status of your ticket online where you can add follow up replies. http://www.bulletproofsoft.com/cgi-bin/custquest/quest_desk.cgi If the URL above splits into two lines, please visit: http://www.bulletproofsoft.com/support.html and click on the Contact Customer Support link Rest assured we will do our best to respond to your query promptly. You will receive a further email notification when one of our technicians has replied. Tech Support BulletProofSoft.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Now only if the employees had bullet proof minds. Who in their right mind signed up to a mailing list with their tech support email address? :-) Seriously though, you need to unsubscribe this email address and use a different one. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Scripts
Charles P. Killmer wrote:
I am trying to write a function in a script file and having a lot of
trouble.
%
function String test() {
return test;
}
out.print(test());
%
Is there a way to do this without using a class? Also along these lines
would something like this be possible.
%
function void test() {
%
This should just be echoed to the screen.
%
}
test();
%
Thanks for any help
Charles Killmer
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Don't confuse java/jsp with javascript. Unless you have a special
container that supports java script in the language parameter for the
page context.
Wade
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Re: Tomcat/JVM crashes on Linux
Greg Lappen wrote: That's a good idea, I'm going to try that. Its a cheap way to confirm or deny my suspicions. Thanks! On Dec 21, 2004, at 9:20 AM, Eric Rotick wrote: I've not tried this myself but you could add a Runtime.addShutdownHook and get it to print out anything which will give you a clue. On Tue, 21 Dec 2004 08:47:49 -0500, Greg Lappen [EMAIL PROTECTED] wrote: Well, turns out the RAM is fine in the server. Our hosting provider tested it last night and said it checked out fine. Is there any other reason that the JVM/Tomcat would just exit like this? Could System.exit() be called somewhere? Isn't there a way to prevent System.exit() from being called? I know I'm grasping at straws, but what else is there to do in this situation? Greg On Dec 20, 2004, at 1:57 PM, Eric Rotick wrote: I had a similar problem with an almost identical setup to yours which turned out to be bad memory. An extra 1GB stick was added which had a bad section in the top of the memory map. This memory only got used when things got busy so everyone suspected some threading issue. We got lucky and spotted something totally absurd in the logs which prompted a memtest86 run and hey presto we got our answer. On Mon, 20 Dec 2004 13:28:56 -0500, Wade Chandler [EMAIL PROTECTED] wrote: Greg Lappen wrote: Hello- Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with no error messages? My production server running with JDK 1.4.2_06, RedHat EL 3.0 just crashes, no core dump, no errors in catalina.out, no clues. Sometimes it goes for days, sometimes it happens several times in one day. I am running the tomcat process behind Apache 2 with mod_proxy. Setting ulimit -c unlimited in the catalina.sh startup file still did not produce a core file. If nobody else has experienced this, do you have any suggestions on how to debug it further? Thanks, Greg --- -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I'm using the same setup as you less Apache2. I use tomcat as the web server. Using TC5.0.28 and JDK1.4.2_06, and I have yet to have the server crash once. Not much help, but might give you some clues where to look. Connector log (mod_proxyassuming you mean you're using the new connector code)is there anything in the Apache2 log? I assume from your post you mean that the java process just completely goes away. You might find (depending on the running directory of the java process running tomcat) a pid dump log file or something...not sure if the vm produces one of these or not. You also might check in /var/log/messages file to see if for some reason the kernel or some lib got some error it logged. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Yoav would be able to answer this much better than I, but you should be able to modify the security settings of Tomcat to not allow that call from any of the web apps. I think tomcat has it's own policy file, and you can also add your own policies to only allow the call from certain code bases. In the java docs for the jdk 1.4.x look up Policy file and from there you'll find all kinds of information on permissions and code security. You can limit only certain jar files specifically to be able to call this method. Which Tomcat 5.0.x might already do thisI haven't actually tried to tell you the truth. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Java developer friendly Linux distro
Nat Gross wrote: Antony Paul wrote: Hi all, Which distro (free) is most friendly for Java development. I need J2SE 1.4.2 to work on it plus Eclipse 3.x(Linux dont have a good text editor in which I can run Ant builds). I use JEDIT for quick simple editing of files, and Eclipse for the real stuff. A great combination. I would not advise using JEDIT instead of Eclipse but I don't want to start a war now. Although I am currently using Fedora Core 2, I am looking to upgrade, and the folks in various Linux/Unix newsgroups are pushing me towards the new Solaris 10, free from Sun. (My main Eclipse work though, for now, is still on a WinXP machine.) fwiw, -nat - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I have tried Solaris on intel over the past recent years, and I love Sun, but my gripe with Solaris on intel is lack of drivers. Look at CentOS or White Box Linux (www.centos.org and www.whiteboxlinux.org respectfully) if you like Red Hat as they are free and use the Red Hat source SRPMs with only stripping out the RH branding, so they are Advanced and Enterprise RH for free using the same source code. SuSE is also very good. I am using 9.1 at the moment. You can purchase SuSE9.2 Professional for 90.00US and get like 7-8 cd's and a DVD with all kinds of nice applications. I've been happy with all the ones I've mentioned. I run Tomcat on all of them, I use Netbeans 4.0 without issue on all of them, and have been developing java on all of them for years. SuSE has been using the 2.6 kernel since their 9.1 release. I've been pleased with it. I've got some friends who like the Debian based distros. To install a VM on them download the non RPM version of the install. That's about it really. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: How to run servlet for every 30 minutes in Tomcat 4.1.30
Shilpa Nalgonda wrote: Hi, I am using Tomcat4.1.30 version. I have to develop a client application which looks in the database every 30 minutes, to retrieve the status of an order and send the status to the remote client. Again waits for the The client's response and insert the repsonse back to the database. I wanted to do this in a servlet, so is there any way that i could run this servlet automatically inside the Tomcat container, or is it configurable in servlet mapping? if so can someone please suggest me with examples... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Wellit's kind of not extremely clear what you are asking, but why does the servlet need to do anything except listen for a client which is threaded to do this every 30 minutes, in other words...why not have the servlet do what it naturally does...sit there and get hit by client requestsget the infoand send it back? I mean...the servlet can't push to the client unless you want to use something besides http, or unless you are using servlets on both ends and http servers on both ends. You could use keep alives I guess.I wouldn't thoughonly so many tcp/ip connections. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Why is tomcat (java) so memory intensive?
Dakota Jack wrote: Why, then, does the Tomcat 5.0 say in the RELEASE-NOTES JAVAC leaking memory is an issue? On Tue, 21 Dec 2004 16:06:13 -, Allistair Crossley [EMAIL PROTECTED] wrote: i think (from memory) it had to do with registering requests with jk. anyway, like i say, upgrade and you'll see that leak go away i am pretty sure. -Original Message- From: Allistair Crossley Sent: 21 December 2004 16:00 To: Tomcat Users List; [EMAIL PROTECTED] Subject: RE: Why is tomcat (java) so memory intensive? you are right, tomcat 5.0.19 did have a memory leak. some dispute it, but it is there, i had it also and used a profiler to show it. you should upgrade to 5.0.28. Thanks, Jack That's during compilation. I always setup tomcat to fork when compiling jsp. That means it runs a seperate process to compile pages. I do this in both production and testing. I just like the feeling it gives me :-P ... well it's just better to not worry about it for me. The bug is supposed to be gone in 1.4.2, but I still fork. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/JVM crashes on Linux
Greg Lappen wrote: Hello- Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with no error messages? My production server running with JDK 1.4.2_06, RedHat EL 3.0 just crashes, no core dump, no errors in catalina.out, no clues. Sometimes it goes for days, sometimes it happens several times in one day. I am running the tomcat process behind Apache 2 with mod_proxy. Setting ulimit -c unlimited in the catalina.sh startup file still did not produce a core file. If nobody else has experienced this, do you have any suggestions on how to debug it further? Thanks, Greg - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I'm using the same setup as you less Apache2. I use tomcat as the web server. Using TC5.0.28 and JDK1.4.2_06, and I have yet to have the server crash once. Not much help, but might give you some clues where to look. Connector log (mod_proxyassuming you mean you're using the new connector code)is there anything in the Apache2 log? I assume from your post you mean that the java process just completely goes away. You might find (depending on the running directory of the java process running tomcat) a pid dump log file or something...not sure if the vm produces one of these or not. You also might check in /var/log/messages file to see if for some reason the kernel or some lib got some error it logged. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/JVM crashes on Linux
Greg Lappen wrote: What kind of load does your application handle? I am not processing a HUGE amount of requests, but we server about 6000 visitors a day, 15,000 pages. Greg On Dec 20, 2004, at 1:28 PM, Wade Chandler wrote: Greg Lappen wrote: Hello- Has anyone had a problem with Tomcat 5.0.28 crashing on Linux with no error messages? My production server running with JDK 1.4.2_06, RedHat EL 3.0 just crashes, no core dump, no errors in catalina.out, no clues. Sometimes it goes for days, sometimes it happens several times in one day. I am running the tomcat process behind Apache 2 with mod_proxy. Setting ulimit -c unlimited in the catalina.sh startup file still did not produce a core file. If nobody else has experienced this, do you have any suggestions on how to debug it further? Thanks, Greg - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I'm using the same setup as you less Apache2. I use tomcat as the web server. Using TC5.0.28 and JDK1.4.2_06, and I have yet to have the server crash once. Not much help, but might give you some clues where to look. Connector log (mod_proxyassuming you mean you're using the new connector code)is there anything in the Apache2 log? I assume from your post you mean that the java process just completely goes away. You might find (depending on the running directory of the java process running tomcat) a pid dump log file or something...not sure if the vm produces one of these or not. You also might check in /var/log/messages file to see if for some reason the kernel or some lib got some error it logged. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] No where that load on the system I wrote about though it stays up and I haven't rebooted the system or restarted the process in a good number of days. It's only in the hundreds a day. I have another application which runs over http using rpc with serialized classes, and it processes quite a bit of information, plus it spawns it's own threads. It uses apache and/or iis as the front end. Though if it were up to me we would only be using tomcat. We were using an ISAPI c++ application for everything at one time. We are adding more and more functionality to it. I'm sure it uses more process and memory resources as it will run backend import processes, a ton of logic processing, and report generation, and the pure nature of the application will have more hits a day with more fire power per hit than your web site. In testing it hasn't crashed. What are your memeory settings for your tomcat process? If you don't give the process enough memory to do what it has to do it won't be able to behave correctly. Though catalina.out should show you out of memory errors like that. Have you used any testing environment to profile the system and gathered any information about the state of the machine when it will crash? Have you been able to reproduce the issue with any valid results yet? I'd be asking myself how best to do this. You can write a simple application to test your web application, or you could purchase some software to hit a bunch of web pages. Basically you can spawn a bunch of threads from a given machine randomly hitting different links and try to reproduce the issue if you don't have any real hard logic there to test. Do you have any application logic in your site? If so, do you perform any logging or anything of that nature? You may be getting some exception you could have caught and logged yourself like an out of memory error before tomcat barfed out. Something obviously has to be happening for the process to just go away. Do you have to use Apache2 as a front end to the application? If not see if you are able to produce the same issue using only tomcat. Be sure you edit your memory settings for tomcat. Don't try to run it in 128MB of memory or something like that. ulimit is fine as far as linux goes, but you still need to be sure and not have any limits on the JVM. For instance, the default value for -Xmx is 64 which means 64 mega bytes. Depending on how much memory you have on your computer you probably want to up this (orin your case you definitely want to up this). With that many hits you may very well be getting enough hits at the same time during the busy moments of the day to crash you out as I'm not sure how tomcat will behave if it is hammered and doesn't have any room to play. You can add something like (granted you aren't already using -Xmx) JAVA_OPTS=$JAVA_OPTS -Xmx1000m to your catalina.sh file so that you can give
Re: Olen joululomalla, palaan 4.1.2005
[EMAIL PROTECTED] wrote: I will be out of the office starting 17.12.2004 and will not return until 04.01.2005. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] we.. I guess we have to put up with this until the new year ay. People...if you are on a mailing list.don't setup automatic replies unless you can filter out where they get sent. ... :-( Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Olen joululomalla, palaan 4.1.2005
Mark Thomas wrote: No worries. I'll kick them off the list. Mark -Original Message- From: Wade Chandler [mailto:[EMAIL PROTECTED] Sent: Friday, December 17, 2004 9:30 PM To: Tomcat Users List Subject: Re: Olen joululomalla, palaan 4.1.2005 [EMAIL PROTECTED] wrote: I will be out of the office starting 17.12.2004 and will not return until 04.01.2005. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] we.. I guess we have to put up with this until the new year ay. People...if you are on a mailing list.don't setup automatic replies unless you can filter out where they get sent. ... :-( Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Yeah I normally wouldn't say something if it happened a couple of times, but his message says this will be happening until April of 2005. Thanks. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat Administration Application
Kelly, Steve wrote: I've just installed Tomcat 5.5.4. I also downloaded the separate Tomcat Administration application. But when I click the Tomcat Administration button I still get the message saying the web application is no longer installed by default. From the Tomcat manager it says that application 'admin' is running. What else do I need to do to get into it ? TIA, Steve. Well, I assume that first page you are talking about is static, so it has no idea about the management app. You could probably find and modify the link, and the other thing is from your manager application find the context for the admin app and type in http://yourservername:yourport/contextname Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Performace differences when running application in Tomcat and JBuilder
Alex Pointer wrote: I have a problem to do with the performance of a server process I developed when used in Tomcat, in comparison with running it in JBuilder X I have a JAR file that is the server process, that when a method is called from Tomcat takes 35 seconds to run, while the same method called in JBuilder X takes 12.5 seconds Why does Tomcat take over twice as long to run the same code as when run from JBuilder X, and is there a way I can make Tomcat run the code faster? Any help, explanation would be appreciated Details can be found bellow: The complexities of the method are: - using a Oracle JDBC Thin driver, it will connect to a remote Oracle database over a 10Mbit connection and run a single SELECT query that will return 85 records. (The SELECT query is always the same) - each record in the resultset will have a object created that represents it (each record has 129 fields). - the record is copied out of the resultset and into the object by using the meta-data provided with the resultset to identify the correct setter method for the correct field for each record. - the resultset is kept open during the entire action and is passed with its cursor set to each object that then populates itself. - after each object is populated the resultset cursor is moved to the next record. - this is done in a single thread (one object after the other), and stored in an array of objects. - the array of objects are then returned by the method. The first and last line of the called method are logging the current time. To run this method in Tomcat (I have tried versions 4.1.24, 5.0.18, 5.0.28, 5.5.4) I write a web application that I deploy as a .war file in the webapps directory. I copy the JAR file into the shared\lib folder, because it need to be accessed by more than one web application. When a link on the website is clicked it calls the server process. (because I am only looking at the times within the server process any delay caused by the webapp calling the server process is ignored). It takes the same amount of time (to within a few milliseconds) every time the link is clicked, so the compilation of any files cannot be causing the problem. To run this method in JBuilder X I run a main method in a separate project that has the JAR file added into its Included Libraries. (I assume running this way is the same as running it directly to the JVM at the command line) The code is run automatically. Both Tomcat, and JBuilder X are running on the same Windows 2000 machine, and no error or exception is reported during the execution. *** This email has originated from Steria Limited, Registration No: 2706218. Privileged, confidential and/or copyright information may be contained in this email, and is only for the use of the intended addressee. To copy, forward, disclose or otherwise use it in any way if you are not the intended recipient or responsible for delivering to him/her is prohibited. If you receive this email by mistake, please advise the sender immediately, by using the reply facility in your email software. We may monitor the content of emails sent and received via our network for the purposes of ensuring compliance with policies and procedures. This message is subject to and does not create or vary any contractual relationships between Steria Limited and the recipient. Office registered at: Three Cherry Trees Lane, Hemel Hempstead, Hertfordshire, HP2 7AH www.steria.co.uk ** Well, I don't know anything about your method other than it is code. Do you yield in your code? Do you sleep for any amount of time in your code? Threading can influence the time it takes to run code. Also, even though you may not yield in your code, it is still being run in another thread. On the JVM there is nothing else happening in your process. Are you timing from the beginning of the method to the end, or is your timing in different locations throughout the code? You really need to offer as much information as you can possible think of when you start getting into questions like: Why does this code take X amount of time when run in this process vs this process? Give all the details and you might get a better answer, but I can certainly tell you threading in a process will affect the timing of a section of code. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Problem with Sessions...is this a Tomcat bug?
Gabriel Belingueres wrote: Hi, I just discovered a weird thing: I have a Tomcat 4.1.12 running in my machine, which is called ale2000, and I test my app using http://localhost:8080/xx as the url (not the machine name configured in Windows) When some of the html page make a request to the app, using http://ale2000:8080/xx, Tomcat creates other session object, instead of reusing the same session originally created when I call it the first time using http://localhost:8080/xx Is this behavior correct? Doesn't it better to create other session based on different IP addresses, instead of different machine names? TIA, Gabriel - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Well think about what you are asking, and think how session work. Sessions either have to work from URL rewriting or from cookies. URL rewriting stinks (personal opinion), and cookies work on domains. So basically you're limited to web technologies. You could use URL rewriting, but I don't like that. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Apache locks up
Dola Woolfe wrote: Everything is locked up, including the static resources! __ Do you Yahoo!? The all-new My Yahoo! - What will yours do? http://my.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Ok, I guess what I meant to ask is. Do you use a context for Tomcat, and is everyting from that context served through tomcat, or is the static content served through Apache? Can you access some static image file from some where other than the context path of your webapplication? Other than that you'll need to put up different logs. One the apache log file, two tomcat, and three the connectors log file. Those might help. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Apache locks up
Dola Woolfe wrote: --- Wade Chandler [EMAIL PROTECTED] wrote: Dola Woolfe wrote: Everything is locked up, including the static resources! __ Do you Yahoo!? The all-new My Yahoo! - What will yours do? http://my.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Ok, I guess what I meant to ask is. Do you use a context for Tomcat, and is everyting from that context served through tomcat, or is the static content served through Apache? Can you access some static image file from some where other than the context path of your webapplication? Other than that you'll need to put up different logs. One the apache log file, two tomcat, and three the connectors log file. Those might help. Wade You know, I will follow an earlier advice and switch from 1.2.* and 3.3.* to 2.0.* and 5.5.*; Why be several years behind? Dola __ Do you Yahoo!? Send holiday email and support a worthy cause. Do good. http://celebrity.mail.yahoo.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I use 5.0.28 right now. I'm waiting on 5.5.x to stabilize a bit more myself. It's just a precaution that I take. I haven't had any issues out of 5.0.28, and I actually use it for my web server and java server. I have gotten rid of httpd (Apache) all together. I do use Apache2 sometimes as a forward proxy. I can hide multiple machines behind one domain that way. I am happy with Tomcat as my web server. Plus my configuration is much simpler. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Classloading issue
Yu, John wrote: Hi, I'm using Struts plugin, however, I think the issue mostly related to Tomcat ClassLoading. I have a class (in a jar) under WEB-INF/lib, which loads properties from a file located under WEB-INF/classes. ClassLoader cl = getClass().getClassLoader(); InputStream stream = cl.getResourceAsStream(plugin.properties); I have tried different versions of path, with the results I couldn't totally explain: 1. plugin.properties: not work 2. WEB-INF/classes/plugin.properties: work 3. /WEB-INF/classes/plugin.properties: not work 4. /plugin.properties: not work Also, I'm using Tomcat 4.0.6 (NB3.5.1). Does anyone have an answer for this? Is / bad? It may apply to Tomcat 5 as well, isn't it? Regards, John The contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Me and another gentleman had this conversation just a little while ago...well one similar to it. I always have a package which I put my files in. I never have a problem doing that. I always use Class.class.getResourceAsStream and getResource (should be roughly the same...usage is a little different). I have a web app that has multiple installations on the same server and they always find their files. But, I always use a package so I can access the files that way. I quit using an empty package for everything when I started having goofy problems with different app servers. I run into the same thing on Oracle 9iAS once. /plugin.properties and plugin.properties Are very different when you are using ClassLoader.getResource(AsStream), and the same thing applies to Class.getResource(AsString)...see java docs. Again, I never have a problem, and I load property files from under the classes directory all the time. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Classloading issue
Yu, John wrote: Wade, Thanks for sharing. When you say using package, you mean for resource files? One specific thing you didn't mention is where the calling class is located. In my case, it's a class from within a jar in lib. That really made the difference. My conclusion so far is similar: when using /, CL could make a big difference. Better stay away from it? Regards, John -Original Message- From: Wade Chandler [mailto:[EMAIL PROTECTED] Sent: Thursday, December 09, 2004 4:31 PM To: Tomcat Users List Subject: Re: Classloading issue Yu, John wrote: Hi, I'm using Struts plugin, however, I think the issue mostly related to Tomcat ClassLoading. I have a class (in a jar) under WEB-INF/lib, which loads properties from a file located under WEB-INF/classes. ClassLoader cl = getClass().getClassLoader(); InputStream stream = cl.getResourceAsStream(plugin.properties); I have tried different versions of path, with the results I couldn't totally explain: 1. plugin.properties: not work 2. WEB-INF/classes/plugin.properties: work 3. /WEB-INF/classes/plugin.properties: not work 4. /plugin.properties: not work Also, I'm using Tomcat 4.0.6 (NB3.5.1). Does anyone have an answer for this? Is / bad? It may apply to Tomcat 5 as well, isn't it? Regards, John The contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Me and another gentleman had this conversation just a little while ago...well one similar to it. I always have a package which I put my files in. I never have a problem doing that. I always use Class.class.getResourceAsStream and getResource (should be roughly the same...usage is a little different). I have a web app that has multiple installations on the same server and they always find their files. But, I always use a package so I can access the files that way. I quit using an empty package for everything when I started having goofy problems with different app servers. I run into the same thing on Oracle 9iAS once. /plugin.properties and plugin.properties Are very different when you are using ClassLoader.getResource(AsStream), and the same thing applies to Class.getResource(AsString)...see java docs. Again, I never have a problem, and I load property files from under the classes directory all the time. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] The contents of this e-mail are intended for the named addressee only. It contains information that may be confidential. Unless you are the named addressee or an authorized designee, you may not copy or use it, or disclose it to anyone else. If you received it in error please notify us immediately and then destroy it. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Using the / on the classloader call will be like trying to access a file on your root drive or your / directory on *nix. But yes, I usually put my properties files in a folder under classes and access them that way just like accessing a file on the classpath...even though they are files. Under classes I'll have a com/redesetgrow directory and I'll put config files in there. Yes I use a class from one of my packages that I know will only be with my webapp. I always use the full classpath path to the resource and use a class instead of a ClassLoader. I always do com.redesetgrow.util.io.IO.class.getResource(/com/redesetgrow/config.properties); or com.redesetgrow.util.io.IO.class.getResourceAsStream(/com/redesetgrow/config.properties); I always use that full path because a certain vm had a weird bug that bit me before (java 1.3 on IBM AIX using Oracle 9iAS got me like that one time). So I used the full path thing and the class call and that did the trick for me. Since then just out of habit I use that call, and the full path, and I never have problems. I figure it helps me not forget anything, plus I just use one method of getting resources on the classpath. To me it's more readable now. Using the / at the front tells that call to not replace the slashes with .'s when it goes to find my file. Not putting the / in the front would make the call replace all the / with .'s. Another cool thing about that is I have one resource class I use for looking up everything since I use the full classpath to the resource. Though it won't work well for relative paths. My favorite
Re: I don't know what's wrong.
Peter Crowther wrote: From: Phillip Qin [mailto:[EMAIL PROTECTED] If you want to test the MySQL connectivity, make sure that MySQL server allows your IP to remote login otherwise you will have to GRANT PRIVILEDGE. The original poster specified MSSQL noy mySQL. Two irritatingly close acronyms, I agree! - Peter - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This is quoted from his orginal post: I am running mysqld, but as far as I know... the mysqld isn't supporting ANY websites yet. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: I don't know what's wrong.
Warron French wrote: Wade that was true originally, but I also stated that I recently discovered the data was being housed on a MS MSSQL database. I am very sorry for the confusion. Merry Christmas Happy New Year! Warron French Sr. Network Engineer Xtria, LLC -Original Message- From: Wade Chandler [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 08, 2004 10:51 AM To: Tomcat Users List Subject: Re: I don't know what's wrong. Peter Crowther wrote: From: Phillip Qin [mailto:[EMAIL PROTECTED] If you want to test the MySQL connectivity, make sure that MySQL server allows your IP to remote login otherwise you will have to GRANT PRIVILEDGE. The original poster specified MSSQL noy mySQL. Two irritatingly close acronyms, I agree! - Peter - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This is quoted from his orginal post: I am running mysqld, but as far as I know... the mysqld isn't supporting ANY websites yet. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] That's ok. I just saw another email that I had not noticed where you said MSSQL instead of MySQL. No problem. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: I don't know what's wrong.
Warron French wrote: I can tell you that JBoss is indeed running but I don't know how it is configured, I would assume that I don't need a different version of JBoss installed if I am running different versions of Apache. Merry Christmas Happy New Year! Warron French Sr. Network Engineer Xtria, LLC 8045 Leesburg Pike #400 Vienna, VA 22182 Desk: 703-821-6110 Main: 703-821-6000 Fax: 703-827-0374 -Original Message- From: Phillip Qin [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 07, 2004 4:37 PM To: 'Tomcat Users List' Subject: RE: I don't know what's wrong. Jboss is an application server (EJB container). Do you have any EJB application installed? Tomcat renders the pages. Those pages are the front end of your EJB application. -Original Message- From: Warron French [mailto:[EMAIL PROTECTED] Sent: December 7, 2004 4:35 PM To: Tomcat Users List Subject: RE: I don't know what's wrong. So, how does JBoss fit into the whole situation? Merry Christmas Happy New Year! Warron French Sr. Network Engineer Xtria, LLC 8045 Leesburg Pike #400 Vienna, VA 22182 Desk: 703-821-6110 Main: 703-821-6000 Fax: 703-827-0374 -Original Message- From: Phillip Qin [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 07, 2004 4:34 PM To: 'Tomcat Users List' Subject: RE: I don't know what's wrong. Mod_jk is the bridge between Apache and Tomcat. Consult jk 1.x documentation on how to configure it. Mysqld is the MySQL daemon on linux. Many websites use MySQL along with Apache and PHP. -Original Message- From: Warron French [mailto:[EMAIL PROTECTED] Sent: December 7, 2004 4:22 PM To: User Tomcat (E-mail) Subject: I don't know what's wrong. We have a JBoss application? That uses .jsp files to interact with a supposedly searchable database. Can someone explain to me the concepts behind Tomcat, mod_jk, JBoss, and Apache, and if maybe I am missing something like the database. I am running mysqld, but as far as I know... the mysqld isn't supporting ANY websites yet. Here is my url I am trying to get to work. I really don't know enough to figure out what is missing and what I need to be done. http://www.nrcitcw.org/nrcitcw/SearchCategory.jsp I can send snippets of my Virtual Host config from my apache server if anyone is willing to help me. please. This is driving me nuts. It was implemented before I knew it existed. Merry Christmas Happy New Year! Warron French Sr. Network Engineer Xtria, LLC 8045 Leesburg Pike #400 Vienna, VA 22182 Desk: 703-821-6110 Main: 703-821-6000 Fax: 703-827-0374 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] !DSPAM:41b621f721551697314170! - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] JBoss.org sells full documentation. I would suggest purchasing a copy if you are going to have to support it. www.mysql.org has all the stuff you need to know and understand about that. Tomcat has a set of docs. Apache has pretty good documentation. That's the first place I would start. The biggest pieces of your setup if you don't know anything about databases, java servers, and apache are going to be configuring your database, setting up JBoss (tomcat itself is pretty easy), and configuring the communication link between apache and tomcat. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Slightly OT: Yet another IE woe...
Robert Hunt wrote: Weider still, I comment out only the user-data-constraint tag and the download works fine; no-cache http headers are still in place. So, it may be something with https, but how? -- RH - Original Message - From: rh To: tc-u Sent: Tuesday, December 07, 2004 10:42 PM Subject: Slightly OT: Yet another IE woe... Under Tomcat 5.0.25, I've got a web-app creating a file on-the-fly. I've got the servlet surrounded by the following security constraint: -- security-constraint web-resource-collection url-pattern/registration/file.xls/url-pattern /web-resource-collection auth-constraint role-name20040490/role-name /auth-constraint user-data-constraint transport-guaranteeCONFIDENTIAL/transport-guarantee /user-data-constraint /security-constraint -- Without the security constraint, IE (6.0) can save the file just fine. With the constraint, IE gags with the error the file could not be written to cache. I noticed that Tomcat was adding these items to the HTTP response: | 20041207220031203043 | contentLength| -1 | 20041207220031203043 | contentType | application/vnd.ms-excel | 20041207220031203043 | hdr.Cache-Control[0] | no-cache | 20041207220031203043 | hdr.Content-Type[0] | application/vnd.ms-excel | 20041207220031203043 | hdr.Date[0] | Wed, 08 Dec 2004 03:00:31 GMT | 20041207220031203043 | hdr.Expires[0] | Wed, 31 Dec 1969 19:00:00 EST | 20041207220031203043 | hdr.Pragma[0]| No-cache | 20041207220031203043 | hdr.Server[0]| Apache-Coyote/1.1 | 20041207220031203043 | hdr.Transfer-Encoding[0] | chunked | 20041207220031203043 | status | 200 How can one get IE to download a file, over a HTTPs connection without having to strip the no-cache headers? Is there a way or will I have to filter the no-cache headers? There was in at least one version of IE a bug when the stream was too large in an https request. I ran into this with somethings I was doing at one time. Does it work if you try it over an http url? Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Apache locks up
Dola Woolfe wrote: Hi I'm using Tomcat 3.4 (I think) with Apache 1.2x (I think) and a mod_jk.dll. When someone bombards my servlet from a WXP machine then my Apache server stops responding to that machine for about 5 minutes. During that span of time, going to myserver:8080/mywebapp still works! This does not happen when the bombardment takes place from a W2K machine. By bombardment I mean about 1000 sequential requests. Any ideas on what is going on? Thank you very much! Dola Chin __ Do you Yahoo!? Yahoo! Mail - now with 250MB free storage. Learn more. http://info.mail.yahoo.com/mail_250 - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Maybe in your connector setings you don't have enough connections permitted for the communication between apache and tomcat? Or is everything on the Apache server locked up? i.e. Can you get to static resources you know are being served by Apache? Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/Java and SMP
Dan Foreman wrote: 10 application servers. -Original Message- From: Kwok Peng Tuck [mailto:[EMAIL PROTECTED] Sent: Friday, December 03, 2004 6:53 AM To: Tomcat Users List Subject: Re: Tomcat/Java and SMP Dan, U have 10 application servers on one machine or 10 application on 10 distinct machines ? Dan Foreman wrote: Hi, I have a setup of 10 application servers using Tomcat 4/5, jsdk 1.4.2_02, SMP, win2k. In watching the performance under load I am concerned that only one CPU is being utilized at a time. To validate my theory I try hitting the application server with a request to generate a large report and then making another connection. The second connection is painfully slow and task manager only reports a 50% CPU utilization. After doing some reading on SMP/native threads and windows, I wrote a test java application that spawns n infinite loop threads from a single JVM with a delay between each creation. Sure enough one cpu (task manager reporting 50%) and then the other cpu are consumed (task manager reporting 100%). This test tells me that Java is capable of using both CPU's via native threading and some black magic in the windows dll's but that this scenario isn't happening in tomcat. Is it possible for tomcat to use more than one CPU or is there a critical flaw in my logic? -Dan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Hmm do you mean you have 10 webapps and/hosts? To me application servers means you are running multiple instances of tomcat which means you should have 10 different java.exe processes running. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat/Java and SMP
Dan Foreman wrote: Yes, 10 separate boxes with a single JVM (tomcat instance) running on each box. All boxes are SMP. -Original Message- From: David Boyer [mailto:[EMAIL PROTECTED] Sent: Friday, December 03, 2004 12:32 PM To: [EMAIL PROTECTED] Subject: RE: Tomcat/Java and SMP So these are 10 separate boxes? I think the clarification is necessary because application server in the context of java usually refers to the J2EE or (sometimes) servlet container. Are you taling about 10 instances of tomcat each running on their own box? [EMAIL PROTECTED] 12/3/2004 11:20:55 AM 10 application servers. -Original Message- From: Kwok Peng Tuck [mailto:[EMAIL PROTECTED] Sent: Friday, December 03, 2004 6:53 AM To: Tomcat Users List Subject: Re: Tomcat/Java and SMP Dan, U have 10 application servers on one machine or 10 application on 10 distinct machines ? Dan Foreman wrote: Hi, I have a setup of 10 application servers using Tomcat 4/5, jsdk 1.4.2_02, SMP, win2k. In watching the performance under load I am concerned that only one CPU is being utilized at a time. To validate my theory I try hitting the application server with a request to generate a large report and then making another connection. The second connection is painfully slow and task manager only reports a 50% CPU utilization. After doing some reading on SMP/native threads and windows, I wrote a test java application that spawns n infinite loop threads from a single JVM with a delay between each creation. Sure enough one cpu (task manager reporting 50%) and then the other cpu are consumed (task manager reporting 100%). This test tells me that Java is capable of using both CPU's via native threading and some black magic in the windows dll's but that this scenario isn't happening in tomcat. Is it possible for tomcat to use more than one CPU or is there a critical flaw in my logic? -Dan - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Hmm. I would write a small test to hit my http url to cause tomcat to fire up more threads just to get a feel for it. Also maybe make a JSP page and call Runtime.getRuntime().availableProcessors() and print that to the screen and see how many processors the JVM thinks it has available. You might want to loop for something like 30seconds reading this number every few milliseconds in your jsp page and print out all unique values. You could then hit tomcat server multiple times by some client your write. Write a simple java app that spawns off multiple threads and have each thread record it's own findings from the jsp page. This could give you some insight as to whether it is working right or not. I would make the jsp page for a starter and let it run 30 seconds and record unique values and see what I end up with. Maybe then you can change it up to see how many times the value changes if you find you get weird results. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Moving from 4.1.27 to 5.0.28?
Bjørn T Johansen wrote: I am thinging of upgrading our prod Tomcat server from 4.1.27 to 5.0.28 (or is 5.5.4 a safer bet?) and I was wondering if there would be any problems when upgrading? Anything particular I should think of? Regards, BTJ Personally I'm using 5.0.28 and I love it. I usually wait a couple of iterations after a major release like 5.5.x because of new things and bugs. 5.5.x is a rewrite of a bunch of underlying code said to improve performance, stabilization, and TOC. I usually give them time to air out some bugs, so I might switch to 5.5.x around 5.5.7/8/9 something like that. That's just a personal measure from my own experience with a code base and major changes. As far as being stable, I haven't had to restart Tomcat 5.0.28 in a long time. Not sure the number of days, but it's in the months, and that was just because of having to reboot the computer. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Moving from 4.1.27 to 5.0.28?
Shapira, Yoav wrote: Hi, I'd say go to 5.0.28 first. One major revision at a time ;) TOC? Table of Contents? Yoav Shapira http://www.yoavshapira.com -Original Message- From: Wade Chandler [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 01, 2004 8:35 AM To: Tomcat Users List Subject: Re: Moving from 4.1.27 to 5.0.28? Bjørn T Johansen wrote: I am thinging of upgrading our prod Tomcat server from 4.1.27 to 5.0.28 (or is 5.5.4 a safer bet?) and I was wondering if there would be any problems when upgrading? Anything particular I should think of? Regards, BTJ Personally I'm using 5.0.28 and I love it. I usually wait a couple of iterations after a major release like 5.5.x because of new things and bugs. 5.5.x is a rewrite of a bunch of underlying code said to improve performance, stabilization, and TOC. I usually give them time to air out some bugs, so I might switch to 5.5.x around 5.5.7/8/9 something like that. That's just a personal measure from my own experience with a code base and major changes. As far as being stable, I haven't had to restart Tomcat 5.0.28 in a long time. Not sure the number of days, but it's in the months, and that was just because of having to reboot the computer. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Total ownership cost. I guess that should have been TCO. Total cost of ownership. :-P. That was one of the things the tomcat web site said about Tomcat 5.5. I assume that means it has some improvements to the manager and the administrator...?, or is the TCO reduction or assumed reduction a result of it being more stable with better performance, so lower resources are needed? Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: weird tomcat5.0.30 behaviour with jar in WEB-INF/classes
Simone Pierazzini wrote: Hi, I use URLClassLoader to create class loaders that manage jars in WEB-INF/classes In WEB-INF/classes I have many jars that are incompatible each other (they have different classes with the same name inside). Suppose I want to load the following files as resources from a classLoader: - pippo.txt - pippo.jar In the first case I tried the line: classLoader.getResource(pippo.txt) and correctly the returned URL was: file:/ ... /myapp/WEB-INF/classes/pippo.txt where ... stands for $CATALINA_HOME while, trying to get the second file: classLoader.getResource(pippo.jar) tomcat returned the following url: file:/ ... /work/Catalina/localhost/myapp/loader/pippo.jar but the directory ... /work/Catalina/localhost/myapp/loader/ does not contain pippo.jar that is placed in .../myapp/WEB-INF/classes/pippo.jar thanks in advance Simone Pierazzini - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I never try to use relative paths in getResource. I always do this getResource(/pippo.jar); Also, I usually pick a class in my package that I know will certainly be in my web-app classes folder or one of it's jars. This way the classloader used for my call will know about my objects and classes at it's levelso it doesn't make delegate calls...and I use com.mydomain.mypackage.MyClass.class.getResource instead of using the classloader call though that should not matter Maybe try to prepend a / to that file name. Read the javadoc documentation for the method Class.getResource to understand the / before the name of the file. Anyways, I always use the Class.getResource call as I mentioned above and I never have problemsI also am sure to use the / to make it an absolute classpath. Read those java docs to understand more. Hope you have some luck with that. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: weird tomcat5.0.30 behaviour with jar in WEB-INF/classes
Simone Pierazzini wrote:
On Wed, 01 Dec 2004 09:49:33 -0500, Wade Chandler
[EMAIL PROTECTED] wrote:
I never try to use relative paths in getResource. I always do this
getResource(/pippo.jar); Also, I usually pick a class in my package
that I know will certainly be in my web-app classes folder or one of
it's jars. This way the classloader used for my call will know about my
objects and classes at it's levelso it doesn't make delegate
calls...and I use com.mydomain.mypackage.MyClass.class.getResource
instead of using the classloader call though that should not matter
asking resources to classes or classloaders is the same thing:
absolute paths for classes are relative paths for classloaders so the
following lines are equivalent:
com.mydomain.mypackage.MyClass.class.getResource(/xx.txt)
com.mydomain.mypackage.MyClass.class.getClassLoader().getResource(xx.txt)
I pick a class in my package too: if you pick another class you don't
know which classloader you 're using (common/shared/ etc.)
bye
-
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Right, thought you were creating your own URLClassLoader instance to
locate your jars dynamically (not getting the current). Barring that
and looking at your post and then looking at one of Yoavs, then my guess
is the ClassLoader in tomcat is for what ever reason doing something like:
if( name.endsWith(.jar) )
{
//resolve to the home work dir.
}
regardless of the directory being lib or classesseems like a bug to
me as any file in the classpath should just be a file as a jar file
should have to be added to the classpath like it's a directory.
Anyways, are the file names hard coded in your app? You can always come
up with your own file name extension to work around the issue I suppose.
A jar is a jar by any other name .zip, .foo, .mar (?) What ever...the
point I guess is the class loader for what ever reason is resolving on
purpose the .jar ext instead of checking first if the file is under lib
or a sub dir. So you should be able to just rename the file ext unless
for some reason you have an app that has to have the .jar on the end.
The jar classes should still work against files with different ext.
Wade
-
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Re: Can I send response to browser even after the doGet returned?
Santhosh Thomas wrote: Or, are you trying to run some long-running process and think it would be better off as it's own thread? If that's the case, you probably want to look into some sort of queueing mechanism with either status polling or some sort of callback when the task is complete. Again, more details would be helpful. No my process is not time consuming. It will finish in milliseconds and in the worst case can take a few seconds. I am not spawning a thread from each servlet request, but the request processor is another independent thread(started at web init) proecssing a queue of requests. I am only putting the request into the queue from doGet(). After putting into queue, the doGet() returns. The request processor thread then forms the response and tries to flush the output later. My experience is, sometimes I get the output in the browser, sometimes not. I thought it was a broser catching problem (I am not sure..). I cant do a polling in the servlet, bacause it will block my servlet. Has there any way to implement asynchronous request/response using servlets? thanks and regards Santhosh - Couple of things... No, I don't believe you can do anything with request/response after you exit doGet(). Well, let me amend that... you MIGHT be able to get away with it, but I wouldn't expect it to work all the time. What I mean is, once your servlet is done it's work, the container takes over again, and even if you do have a valid reference to the object, I wouldn't expect that you could make any safe assumptions about the state of that object. You might get away with it sometimes, but probably not every request. The other point I wanted to make is that there is a pretty standard rule against spawning threads to service requests. Simply stated, you aren't supposed to do it. The container is supposed to spawn threads as appropriate to service requests, and if your doing it on your own you are more or less competing with the container. Bad Things (tm) tend to happen under those circumstances. I'm not really sure what you are trying to accomplish, but I'm taking a guess that you think that by spawning the threads you will be able to handle more requests concurrently. If that's not the case, please explain you goals further. But, assuming that is correct, I think you may have a fundamental misunderstanding at work... A servlet is supposed to be thread-safe, and the reason for that is that the container will spawn as many instances of it as needed to service requests (to whatever configured limits there are of course). In other words, every request essentially has it's own thread executing your servlet, hence the need for it to be thread-safe. In other words, you spwaning threads is superfluous because the container is already doing essentially what your trying to do on your own. So, just make sure your code is thread-safe, and your fine. Or, are you trying to run some long-running process and think it would be better off as it's own thread? If that's the case, you probably want to look into some sort of queueing mechanism with either status polling or some sort of callback when the task is complete. Again, more details would be helpful. As I said, I'm making assumptions here, so I could be completely wrong! Why can't you just perform your work? The request processor already has your request at the time of doGet. If you are not using multi-threading to perform some special type of task then you should have no problem. It sounds like you haven't used servlets and jsp's very much because if you are simply building the return to a get request you just perform your work from your servlet method doGet or doPost and that is really all there is to it. It shouldn't be any more complicated than that other than maybe something like...if variable this then do this...hand off to another class to process and add to the request or you use another framework that handles passing the request to the correct method depending on some form variable or something like that. That's it.you shouldn't be appending to the request queue yourself as that is already done for you by tomcat. Standard jsp/servlet container operation. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: JDBC
Charles P. Killmer wrote: Looking for concensus on how people, with much more experience than I have, use to connect to SQL Server 7. I have been planning on using Datadirect's JDBC Connect until I saw the price tag for a server. So with that does any body have a preferred JDBC connector to SQL Server 7? Any help is greatly appreciated. Thanks Charles - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Don't know about 7, but for 2000 I use the JDBC driver from Microsoft in our applications and it seems to work fine. They have one for unix/linux and one for windows. You can go to the SQL Server website. It might work with a version 7 servernever tried. It's a free download. Also, jTDS works good as long as you don't use a - in your database name. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
testing my account please ignore.
Testing my account. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: apache problem
Nandish Rudra wrote: Hi, I am running Apache 2.0.49 and Tomcat 5.0.28 on RedHat 9.0. The users are unable to get the images when using the link http://test.test.net/images/test.gif but can get to it using http://test.test.net:8080/images/test.gif. I am new to Apache and would appreciate some help. Regards, Nandish Rudra ECI Conference Call Services, LLC Phone: (973) 796-5043 Cell: (732) 794 5362 Email: [EMAIL PROTECTED] Email2: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] You need to read up on modjk2 first I guess. That will start you on a path to understanding the purpose of each server in this context. If you don't have a reason to use Apache and Tomcat together you could just use Tomcat soley. Either way. I use Tomcat by itself on some servers and I've been very happy with it. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] Webapp upgrades and browser caching
Justin Ruthenbeck wrote: I'm looking for some advice about how to handle the following situation. (1) Apache 2.x in front of Tomcat 5.x (2) Deploy new web application. Bunch of servlets, bunch of jsps, bunch of static content (mainly js, css). (3) Many users use the application, during which time their browsers cache lots of static content (4) We do a major version upgrade of the webapp, including (almost) all new static content, but URLs stay the same (to alleviate bookmark-maintenance requirements). The problem arises when the browsers continue to use their cached version of the static content. Now, the browsers eventually get updated, but immediately after deployment there are huge numbers of graphical and functional (js files) problems. It seems like behavior in this area is widely different amongst browsers and/or their settings. I have only come up with the following option: (1) Play with URLs. New deployments can be deployed under a different url domain like: http://www.server.com/myapp/v1/main.css http://www.server.com/myapp/v2/main.css This would force browsers to get new content since the content appears as totally new content to the browser. Aside from disabling static content caching, are there any other options out there? Much thanks for the help! justin __ Justin Ruthenbeck Lead Software Engineer, NextEngine Inc. justinr - AT - nextengine DOT com Confidential. See: http://www.nextengine.com/confidentiality.php __ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] For static web pages you can use a tag like this: META HTTP-EQUIV=EXPIRES CONTENT=TUE, 2 OCT 1998 12:42:00 GMT If the browsers still have a problem you might be able to configure Apache to output a header will all content called EXPIRES. I think you can if I remember right from some docs I read. You will have to look at Apache for that. I'm not sure about tomcat being able to handle that or not, but the apache bit should prepend the header I believe. The only other way would be to output all images and static pages from a servlet of some kind and add the header yourself to the request. Browsers should honor that tag or header for all images down the line from your html or jsp pages, but may not. Some browsers may be able to be set to ignore this all together though. Sometimes it is even worse than that. I have seen ISP's who think they are slick who install a cache in their systems, and they basically become a proxy for the users. If they are ignoring such things your users would have to contact them. I have seen some who do this for different protocols even http and https differently. That one irked me pretty good. Anyways, I use expires in all my jsp and html files. I haven't ever tried the other stuff for the headers from Apache, but think I remember reading about it in the Apache docs. I have output that header from servlets and ISAPI dlls before. Someone else may be able to offer more help. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Which version of Tomcat and Apache for my UNIX sparc Computer?
Daxin Zuo wrote: My computer: #uname -a SunOS sunbox 5.8 Generic_108528-17 sun4u sparc SUNW, Sun-Blade-100 I see the latest Apache for my computer is httpd-2.0.43-sparc-sun-solaries2.8.tat.gz What Tomcat and Tomcat-connector should I use with this version of Apache? Please help. Thanks. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] IMHO there is no good reason why you shouldn't use the latest release of Tomcat. As far as connectors go you'll either have to get some binaries built from someone else with a Solaris box with the version of apache or build them yourself from the source. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: AW: Tomcat Hanging up !!!
Steffen Heil wrote: Hi If I install Apache 2.0 and Tomcat 4.1 and use mod_jk that is compatible for that I don't what issues will be raised by that. Right, that is why I suggest using tomcat ONLY. This works, and even when tomcat 3.2.1 might be slower that ibm_httpd, tomcat 5.0 is really fast and is at almost at the level of apache. Just put tomcat 5 on a test mashine, put your app in and test, you will see, this works within a few minutes! Regards, Steffen I only use Tomcat any more except cases where I have to run some other things on certain servers. Tomcat 5 branch. I haven't had any issues yet. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: java.util.zip.ZipException: Permission denied
Shilpa Nalgonda wrote: When i restart tomcat 4.1 server i am getting this error any clue of why we get this... Using CATALINA_BASE: /usr/share/tomcat4 Using CATALINA_HOME: /usr/share/tomcat4 Using CATALINA_TMPDIR: /usr/share/tomcat4/temp Using JAVA_HOME: /usr/local/j2sdk1.4.2_03 java.util.zip.ZipException: Permission denied at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.init(ZipFile.java:112) at java.util.jar.JarFile.init(JarFile.java:127) at java.util.jar.JarFile.init(JarFile.java:65) at org.apache.catalina.loader.StandardClassLoader.addRepositoryInternal(Standar dClassLoader.java:1082) at org.apache.catalina.loader.StandardClassLoader.init(StandardClassLoader.ja va:200) at org.apache.catalina.startup.ClassLoaderFactory.createClassLoader(ClassLoader Factory.java:202) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:140) Bootstrap: Class loader creation threw exception java.lang.IllegalArgumentException: addRepositoryInternal: java.util.zip.ZipException: Permission denied at org.apache.catalina.loader.StandardClassLoader.addRepositoryInternal(Standar dClassLoader.java:1110) at org.apache.catalina.loader.StandardClassLoader.init(StandardClassLoader.ja va:200) at org.apache.catalina.startup.ClassLoaderFactory.createClassLoader(ClassLoader Factory.java:202) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:140) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] It sounds like some of the jar files being added to the classpath do not have permissions for the user tomcat is being ran as. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Fatal: relocation error: file libapr-0.so.0: symbol __divdi3: referenced symbol not found
Jonathan Rengifo wrote: I made the test with succesful results, I guess it is a linking problem, but don't know how to solve it.. On Fri, 03 Sep 2004 16:18:13 -0400, John Villar [EMAIL PROTECTED] wrote: Try to make a small java test (without tomcat) that use the unix sockets and see what happens maybe you can debug it and find what/where is happenning Jonathan Rengifo escribió: Hi, all... My problem is definitive related with the libjkjni.so lib, when I add the path of the library to the LD_LIBRARY_PATH I get the error message: ld.so.1: /usr/java/bin/java: fatal: relocation error: file /usr/local/apache-httpd-2.0.50/lib/libapr-0.so.0: symbol __divdi3: referenced symbol not found But, when take this path out of the LD_LIBRARY_PATH the error disappears, but also disappears the AF_SOCKET support of the connector, and got this message: INFO: APR not loaded, disabling jni components: java.io.IOException: java.lang.UnsatisfiedLinkError: no jkjni in java.library.path Because of this error I did put the libjkjni.so lib on the LD_LIBRARY_PATH... Any suggestions?? Regards Jonathan On Fri, 3 Sep 2004 11:50:11 -0400, Jonathan Rengifo [EMAIL PROTECTED] wrote: Hi, thanks for your very important help.. I ran the ldd utility on the libapr-0.so.0 lib, with the following results: /usr/local/apache-httpd-2.0.50/lib ldd libapr-0.so.0 libsendfile.so.1 = /usr/lib/libsendfile.so.1 librt.so.1 =/usr/lib/librt.so.1 libm.so.1 = /usr/lib/libm.so.1 libsocket.so.1 =/usr/lib/libsocket.so.1 libnsl.so.1 = /usr/lib/libnsl.so.1 libresolv.so.2 =/usr/lib/libresolv.so.2 libpthread.so.1 = /usr/lib/libpthread.so.1 libdl.so.1 =/usr/lib/libdl.so.1 libc.so.1 = /usr/lib/libc.so.1 libaio.so.1 = /usr/lib/libaio.so.1 libmd5.so.1 = /usr/lib/libmd5.so.1 libmp.so.2 =/usr/lib/libmp.so.2 libthread.so.1 =/usr/lib/libthread.so.1 /usr/platform/SUNW,Sun-Fire-V210/lib/libc_psr.so.1 /usr/platform/SUNW,Sun-Fire-V210/lib/libmd5_psr.so.1 Then I those libs for the symbol, and don't find it... What does this mean? Thanks .. Jonathan On Fri, 3 Sep 2004 10:01:01 -0500, QM [EMAIL PROTECTED] wrote: On Fri, Sep 03, 2004 at 10:44:13AM -0400, Jonathan Rengifo wrote: : nm /usr/local/apache-httpd-2.0.50/lib/libapr-0.so.0 | grep div : [337] | 0| 0|FUNC |GLOB |0|UNDEF |.div : [640] | 0| 0|FUNC |GLOB |0|UNDEF |.udiv : [909] | 0| 0|NOTY |GLOB |0|UNDEF |__divdi3 : [938] | 0| 0|NOTY |GLOB |0|UNDEF |__udivdi3 : : So it seems that the problem is on the libapr-0.so.0 because there : is the variable __divdi3 wich is reporting the relocation error What happens when you run ldd on libapr-0.so.0, and skim those libs for the symbol? Note especially any libs that ldd claims it can't find. -QM -- software -- http://www.brandxdev.net tech news -- http://www.RoarNetworX.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -- John Villar Gerente de Proyectos Computadores Flor Hard Soft 2058 C.A. www.florhard.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] Are you building the .so youself, or did you get a binary from someone else? Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: RHEL 3.0, Tomcat 4.x and IPTables
Sean Finkel wrote: Greetings all, I had posted earlier about an issue with Tomcat hanging, and also holding Apache processes hostage. I have narrowed the problem down to some kind of conflict with Tomcat/JVM and IPTables on RedHat Enterprise Linux 3.0 ES. When Tomcat hangs, what happens is, half the page is returned to the browser and the status bar sits at waiting for domain.com. As Soon as I issue service iptables stop the page finishes loading, and I cannot make any other pages half-load. Any apache process that were tied up waiting on tomcat stay hung though, and I have to either manually kill those PIDS or issue a SIGHUP to Apache. When only a few are hung, I kill them, as to not interrupt downloads for other users. However, when 92 are hung, I just SIGHUP apache. Obviously, this is an issue with not being able to run a firewall, as we don't have a hardware firewall in place. Does anyone know what kind of interference/issue IPTables would be causing Tomcat? I will note, this one website is the only Host on this instance. We do also have another tomcat instance which hosts 3 other domains, and those never hang. I am starting to think it might be some of the customers code, though I am not sure what it would be as I am certainly not a Java guru. I have asked him if he contacts outside services in his code, but he has not replied yet. I doubt it is this as I have started the firewall with ports 0-32767 open and it still hangs. Could this be some kind of memory collision between IPTables and Tomcat? As well, this setup worked flawlessly under RH 9.0 and RH 7.3. Just looking for ideas here, as this honestly makes no sense to me. thanks! -Sean Finkel - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] I would take a small machine and make a firewall out of that. You pose yourself more of a security risk having your app server stuck on the same machine as your security. I assume you are running your mail services and all on the same machine. Probably not a good idea. Anyways, other than that are you getting any messages in /var/log files? Maybe there is something being shared causing an issue. On the Redhat lists there has been discussion about this. It has something to do with i686 kernel vs i586. Search the redhat help lists about this. As people haven't exactly fixed the issue, but there are work arounds available in the archives. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Java process growth under Linux...leak?
Mark Maigatter wrote: We have a Tomcat 5.0.25 based web site for uploading images and assorted files and managing them. We have found that the Java process that Tomcat is running under is gradually growing when repetitively processing files uploaded and stripped out of the form submissions by the Apache FileUpload component. All signs point to a memory leak? Upon the submission of about 500 files we had a 31MB growth in the size of the java process using top. However, the Sun Java jvmstat shows that the Java heap is staying relatively constant. The -gc numbers fluctuate in a manner that shows reasonable garbage collection activity and the total used across the s0/s1/eden/old stay with the range for the initial numbers. My question is what would you recommend to isolate the process growth? Is there a way within Java to see the underlying process growth to help isolate it in the processing cycle? --mark How large were the files you were uploading? I mean you just said you uploaded 500 files. You should expect to see process memory growth. The JVM has it's own object heap where it manages it's internal memory. Then there is the process and it's memory which is a C heap. I see that you uploaded 500 files. Were these one right after the other, or were they close to simultaneous? Also, how are you uploading the files? Are you using some type of a parser? Are you using the commons file upload control? If the JVM reports good memory collection, then there is no memory leak in Tomcat. 31MB of growth for a process uploading 500 files shouldn't be that bad depending on how they were uploaded and file sizes. Think about it. If the files were between 100kb and 60kb then you have a total of 30mb to 50mb of memory just in that data alone not including your application and other buffers you may or may not be creating while uploading. For perforamnce reasons the VM isn't going to suddenly resize the heap as soon as it frees a group of java objects because as far as it knows you may come along and upload 50mb worth of data immediately after the first. This is a performance thing. Resizing the heap takes time and cpu resources and affects performance. The VM will reuse this memory over and over again. I would look at any loops I might have reading from the stream. Do you create a bunch of small byte array's while uploading the files? Maybe you could increase the buffer size, be sure to null them out after you perform a read to tell them VM you are done with the variable now (for when the vm collects), and then see if that affects the memory growth. This should help speed the file upload a bit and get rid of some buffers in loops a little quicker if you aren't nulling the array. If however you are simultaneously uploading much of this data, then a 31mb spike in memory usage shouldn't be a suprise no matter what. Basically you can impose limits on the VM and you can use switches to do this. You can also devote more memory to eden or survivor objects so that the VM can make better use of the most commonly used memory. You can find more info on this topic and others at this url: http://java.sun.com/docs/performance/ Many docs. One for you might be: http://java.sun.com/docs/hotspot/VMOptions.html scroll down to the bottom and check out options: -XX:NewRatio -XX:NewSize -XX:SurvivorRatio Basically the defaults for the -server VM are to allow the best performance for a multi user multi threaded application such as tomcat. So, unless you are running out of memory or you need to cripple the app servers performance by limiting it's growth because you have a bunch of other applications running on the same server, then I suggest sticking with the defaults. Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
