Method returning null
Hi all, I have deployed a web service on my tomcat 5.5.12 running on linux7.0. I am using axis 1.3. I am trying to call a function which returns an integer but I am getting null always. Why so? Please advice what could be the problem? Regards, Mukesh Kumar
Configure Farming Tomcat
Hello, I am trying to configue something like this: One Hardware balancer Two Apache-1.3.33 Two Tomcat-5.5.7 with four machines. The load balancer works fine but I have many problems with Cluster (farming) configuration. I don´t know how I have to configure this in order to put a class (or .jsp) in one Tomcat and this class distributes accross multicast net to the ohter tomcat. The cluster directive has this configuration: Cluster className =org.apache.catalina.cluster.tcp.SimpleTcpCluster managerClassName =org.apache.catalina.cluster.session.DeltaManager expireSessionsOnShutdown=false useDirtyFlag=false notifyListenersOnReplication=true name=cluster Membership className=org.apache.catalina.cluster.mcast.McastService mcastAddr=228.0.0.4 mcastPort=45564 mcastFrequency=500 mcastDropTime=3000/ Receiver className =org.apache.catalina.cluster.tcp.ReplicationListener tcpListenAddress=auto tcpListenPort=4000 tcpSelectorTimeout=100 tcpThreadCount=6/ Sender className =org.apache.catalina.cluster.tcp.ReplicationTransmitter replicationMode=synchronous ackTimeout=15000/ Valve className =org.apache.catalina.cluster.tcp.ReplicationValve filter=.*\.gif;.*\.js;.*\.jpg;.*\.png;.*\.htm;.*\.html;. *\.css;.*\.txt;/ Deployer className =org.apache.catalina.cluster.deploy.FarmWarDeployer tempDir=/tmp/war-temp/ deployDir=/tmp/war-deploy/ watchDir=/tmp/war-listen/ watchEnabled=true/ /Cluster Can anybody help me? Thanks and sorry for my bad english!!! - - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Connection refused
Hi friends,
I have found the cause of the error, in fact function is never gets
called. Its throwing an error nested exception is:
java.net.ConnectException: Connection refused
Code is like this
Try
{
//calling function here
}catch(Exception e)
{
out.println(e.getMessage());
}
In fact I have connected tomcat 5.5.12 to apache2.0 via mod_jk.
Outpus is nested exception is: java.net.ConnectException: Connection
refused
Please suugest the solution.
Kind regards
Mukesh Kumar
-Original Message-
From: mukesh [mailto:[EMAIL PROTECTED]
Sent: Monday, December 26, 2005 5:29 PM
To: 'Tomcat Users List'
Subject: Method returning null
Hi all,
I have deployed a web service on my tomcat 5.5.12 running on
linux7.0. I am using axis 1.3.
I am trying to call a function which returns an integer but I am
getting null always.
Why so? Please advice what could be the problem?
Regards,
Mukesh Kumar
-
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
UDP Server app
I'm developing an application that will monitor a port on Tomcat 5.5.x and receive udp datagrams. I've got the class coded, but not sure if I've done it correctly. I created a class with a main() method that runs the code to read from whatever port I specify. Do I need to configure Tomcat to open this port or listen on the port? Should I inherit my server class from thread, so it can be multithreaded? How do I know my application is running? I usually just develop classes/applications that are initiated by JSP pages. Thanks, K - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: tomcat-apache ajp13 connection problem (answer time)
no, none at all. there is the network switch followed by the firewall. Quoting Prasad [EMAIL PROTECTED]: Any load balancers exist in your enviornment ?? [EMAIL PROTECTED] wrote: hello there, i have two servers inside the dmz, one with redhat 9 the other with fedora core 4. the box running with fedora core has tomcat 5.5.9 and apache 2.0.54. the connection is made with ajp13. the redhat 9 has an older apache and java version. these two servers run separated, so each one has all it needs on its system. there are multiple virtual hosts and web applications on each server. accessing such a web application from localhost works well, the same when beeing inside the dmz and using a testclient. now the problem, requests from outside the dmz work still well for the redhat 9 installation, fedora core 4 however has answer times between page and image loads that are from multiple seconds to minutes! i have looked at all known log files, but got no errors at all, there is simply a wait time between multiple requests and i dont see why. running tomcat on port 80 as standalone however works correctly from outside the dmz. apache as standalone too. however as soon as the ajp13 connector connects the two, from outside the dmz requests slow down. has anybody an idea where i might have a closer look too to get this problem solved ? thanks a lot, stephan - 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]
Re: UDP Server app
Hi, A few questions to help clarify what you want: 1) Is this UDP port actually being used by your instance of Tomcat for implementing some functionality and you simply want to listen on the port without interfering with the actions that take place? (kind of like a wire tap) -- If you are indeed trying to monitor a port on Tomcat then I take it that Tomcat already makes use of that port of somehow. In which case, you should really have no need to open anything or configure Tomcat in any way, shape or form. 2) Are you looking to add-to Tomcat's present functionality on this UDP port or extend it with your code? -- I lack ideas on this one. 3) This really has nothing to do with Tomcat in the sense that you just want to listen on a UDP port and your app just happens to be deployed on Tomcat and you just want the damned thing to work? -- I think that if its simply an app that you deployed on Tomcat that will listen on any given UDP port then Tomcat has no business constraining you. But ofcourse this can be confirmed :) If it was me...here's how I would go about confirming: a) I think that since main() is a static method, it should run automagically when you deploy your app into webapps and start tomcat. b) You can confirm this by writing a fake webapp (real quick) where the main method contains print_out statements to your catalina.log c) If you see these log statements in catalina.log or wherever else you tried to output them to then your code in main() should have run. d) Now, put similar print statements in your real webapp's main() method inside the try and catch block so that you know if you are listening or failing. e) You can also write a test class that prints an UDP message on the port that you are either hard-coded to listen to or maybe have a configuration file for. In turn, have your listening webapp print any messages it captures. Then looking at the file (stdout or catalina.out) where you printed the message...you should have a good feel for where you stand. Cheers, - Pulkit On 12/26/05, kjr_23 [EMAIL PROTECTED] wrote: I'm developing an application that will monitor a port on Tomcat 5.5.x and receive udp datagrams. I've got the class coded, but not sure if I've done it correctly. I created a class with a main() method that runs the code to read from whatever port I specify. Do I need to configure Tomcat to open this port or listen on the port? Should I inherit my server class from thread, so it can be multithreaded? How do I know my application is running? I usually just develop classes/applications that are initiated by JSP pages. Thanks, K - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: UDP Server app
Pulkit, This will be a brand new application. We will be tracking a fleet of about 300 - 400 vehicles with modems in them which send out udp data. We will configure them to send to a port of our choosing. I am planning to host a java app on Tomcat to read this data, parse it and write to a database. It sounds like your question 3 below is correct. I just want to get it working, and my app happens to be deployed on Tomcat. I guess I can monitor the port without Tomcat needing to be configured differently. That being said, do you think my app with the main() method is the way to go, or should I extend thread and make it threaded with a run() method? Anyone see any design flaws or opportunity for improvement? As I said, most of my experience thus far has been writing web applications that are called from JSP's, so this is all new to me. Thanks, K -Original Message- From: Pulkit Singhal [mailto:[EMAIL PROTECTED] Sent: Monday, December 26, 2005 2:27 PM To: Tomcat Users List Subject: Re: UDP Server app Hi, A few questions to help clarify what you want: 1) Is this UDP port actually being used by your instance of Tomcat for implementing some functionality and you simply want to listen on the port without interfering with the actions that take place? (kind of like a wire tap) -- If you are indeed trying to monitor a port on Tomcat then I take it that Tomcat already makes use of that port of somehow. In which case, you should really have no need to open anything or configure Tomcat in any way, shape or form. 2) Are you looking to add-to Tomcat's present functionality on this UDP port or extend it with your code? -- I lack ideas on this one. 3) This really has nothing to do with Tomcat in the sense that you just want to listen on a UDP port and your app just happens to be deployed on Tomcat and you just want the damned thing to work? -- I think that if its simply an app that you deployed on Tomcat that will listen on any given UDP port then Tomcat has no business constraining you. But ofcourse this can be confirmed :) If it was me...here's how I would go about confirming: a) I think that since main() is a static method, it should run automagically when you deploy your app into webapps and start tomcat. b) You can confirm this by writing a fake webapp (real quick) where the main method contains print_out statements to your catalina.log c) If you see these log statements in catalina.log or wherever else you tried to output them to then your code in main() should have run. d) Now, put similar print statements in your real webapp's main() method inside the try and catch block so that you know if you are listening or failing. e) You can also write a test class that prints an UDP message on the port that you are either hard-coded to listen to or maybe have a configuration file for. In turn, have your listening webapp print any messages it captures. Then looking at the file (stdout or catalina.out) where you printed the message...you should have a good feel for where you stand. Cheers, - Pulkit On 12/26/05, kjr_23 [EMAIL PROTECTED] wrote: I'm developing an application that will monitor a port on Tomcat 5.5.x and receive udp datagrams. I've got the class coded, but not sure if I've done it correctly. I created a class with a main() method that runs the code to read from whatever port I specify. Do I need to configure Tomcat to open this port or listen on the port? Should I inherit my server class from thread, so it can be multithreaded? How do I know my application is running? I usually just develop classes/applications that are initiated by JSP pages. Thanks, K - 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]
Tomcat Datasource , can we define them in war file (whithout accessing to Admin console)?
Hi Thank you for reading my post. Is it possible to make a data-source without admin console ? I mean by defining the data-source in web.xml or in Context.xml (i think i read somewhere that we could put context.xml into meta-inf folder and it will act like Context definition in admin console). is it mandatory that Tomcat shared library folder contain my database jdbc driver to have data-source ? I mean can we bundle , our JDBC driver inside war file and define the data-source in war file too ? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Keystore password in clear text
Hi, Is there a way in tomcat on (Windows / Unix) that we can avoid the keystore password being set in clear text in the server.xml file? Is there a way that the JVM system parameter javax.net.ssl.keyStorePassword can be passed in to the tomcat server when it starts up so that the password is not stored in the server.xml file? I tried modifying catalina.bat to include this parameter but that did not do much good. Am I missing something? Any help will be much appreciated. Thanks, Shibu.
Re: mod_jk versus mod_proxy under load ?
I hate to take you off topic here but just in case you migth want to check this post out as well: *Re: About possible memory leak in Tomcat 5.x* Cheers and Gluck! On 12/26/05, Laurent Perez [EMAIL PROTECTED] wrote: Hello One of our production servers recently started to suffer from very heavy performance troubles under load : the current setup is apache2 + mod_jk/ajp13 + tomcat5.0.25, jdk 1.4.2, 1GB (Xmx/Xms to 640MB) on a dual 2.4Ghz Xeon server. The maximum amount of requests/sec reached is around 15req/sec under production load, and I'd like to hit something between 30 and 40req/sec, unfortunately, mod_cache is not really an option for our current hosting company. Are there available benchmarks comparing mod_jk and mod_proxy available, or resulting from anyone's personal experience ? I googled quite a bit and results are just random, someone will tell jk is faster, someone else will tell proxy is faster, so I'm looking for some advice on this TC list. Thanks for any input Laurent -- a href=http://in-pocket.blogspot.com;http://in-pocket.blogspot.com - Mobile world, technology and more/a - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Tomcat Datasource , can we define them in war file (whithout accessing to Admin console)?
Hello, I am assuming that you are trying to define this datasource in order to do application server managed connection pooling. The closest I have done to what you described is declare a datasource as a global resource in the server.xml and refer to it in context definition. You can define a new context in the $CATALINA_HOME/conf/Catalina/localhost/APPNAME.xml. Here is an example: ?xml version=1.0 encoding=UTF-8? Context path=/son ResourceLink name=jdbc/teamDB global=jdbc/teamDB type=javax.sql.DataSource / /Context However, I still needed to put the jdbc jar file in the common/lib. I am not completely sure about this, but for application server to manage your datasource, one needs to make the proper jar file available to the app server by putting it in the common/lib as it will not look inside each deployed directory to perform application independent tasks. I am also curious to know if someone has found a way around this. Best Regards, Khawaja Shams On 12/26/05, Legolas Woodland [EMAIL PROTECTED] wrote: Hi Thank you for reading my post. Is it possible to make a data-source without admin console ? I mean by defining the data-source in web.xml or in Context.xml (i think i read somewhere that we could put context.xml into meta-inf folder and it will act like Context definition in admin console). is it mandatory that Tomcat shared library folder contain my database jdbc driver to have data-source ? I mean can we bundle , our JDBC driver inside war file and define the data-source in war file too ? - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Tomcat uses locally only.
This may be a newbie question forgive me for that. I'm currently using Tomcat as a client-side server which is intended to only be accessed by the local user. Therefore it does not need to be accessed via a remote IP. Is there a setting in the connector to specify that the server is only to be accessed via localhost? I know I can just setup the firewall to not allow incoming on that port but I'd like to do it at the server level as well. The reason for the client-side server is we needed an 'offline' version of our application and rather then support two codelines I went to the easier solution of creating an offline web application on the local client. Anyways, one of our customers is voicing concerns about hackers gaining access to the laptop via the webserver, and I'd rather go back with them for with not only the local firewall solution but also a way to lock down the application server itself. Or is there an application server which would be better suited for this? We use tomcat in production which is why I went with it for the client-side suite. Thanks for your assistance :) - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: detecting a new file
--- Khawaja Shams [EMAIL PROTECTED] wrote: Hello all, I am curious if anyone has ever had to write a servlet that listens for new files on the server and processes them upon appearence. Basically, I need to write a server side program that detects when (our automated process) delivers a file to the server filesystem and then process the file. I would sincerely appreciate any pointers on how this can be accomplished from within tomcat. Happy Holidays. Sincerely, Khawaja Shams My theory is always copy something that is working now. Go to www.netbeans.org,download a source zip as available here (http://www.netbeans.info/downloads/download.php?a=np=2) ... maybe choose a daily build ... keep following the arrows eventually you'll get to the download and be able to select a source download...that or figure out how to use their CVS repository, and then follow the source directory structure to the directory (relative obviously): openide\fs\src\org\openide\filesystems see the files: FileChangeListener.java FileChangeAdapter.java FileEvent.java AbstractFolder.java (this actually has the code to watch the directory) also the tomcat code watches directory contents and files as well. I don't know exactly where, but you'll be looking for code that watches the webapps directory for .war files and possibly other files. Auto-deploy of war files works this way. Anyways, all you're doing is watching a directory for files and storing previous states so you can compare later to see what has happened. You could store state in a DB and use SQL to determine changes or store it in memory. This will all depend on what you need ... speed vs. memory usage. SQL and connections obviously slower than an in memory map, but it should save you on always keeping your memory used. Hope it helps, Wade - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: detecting a new file
--- Daniel Blumenthal [EMAIL PROTECTED] wrote:
A related question to this is, how can you set up a
process within the
servlet that fires off at X time, or every Y
seconds? The equivalent of a
cron job inside the servlet.
If you have high enough traffic, there's an easy
hack - just store a Date
object as a servlet-level attribute, and check on
each request if the
current time is greater than or equal. But is there
a cleaner solution?
Also, it would be nice to have a little more precise
control than hoping
that a user will happen to come to the site at the
right time.
I suppose you could spin off a thread that sleeps
for X amount of time,
wakes to check on the situation, and goes back to
sleep when done.
To the specific question - I would guess
(incorrectly?) that there's no Java
file system listener. But I could certainly be
wrong... ?
Daniel
-Original Message-
From: Khawaja Shams [mailto:[EMAIL PROTECTED]
Sent: Monday, December 26, 2005 8:20 PM
To: Tomcat Users List
Subject: detecting a new file
Hello all,
I am curious if anyone has ever had to write a
servlet
that listens for new files on the server and
processes them
upon appearence. Basically, I need to write a
server side
program that detects when (our automated
process) delivers a file to the server filesystem
and then
process the file. I would sincerely appreciate
any pointers
on how this can be accomplished from within
tomcat.
Happy Holidays.
Sincerely,
Khawaja Shams
There is no standard file system watcher...at least
not in standard API's which I know of. Yes, you have
to use a thread or java.util.Timer (uses a thread
behind the abstraction and might make it easier for
you) to do this unless you use SharedMemory or TCP/IP
and spawn off a separate process so you don't break
the rule about not creating threads in the container
(but I don't want to complicate this discussion), but
I prefer to go by what I need when I need it vs the
spec ( ;-) ) utility threads like this are needed at
times depending on what you need/have to accomplish.
I would use a thread for this as it's pretty simple
stuff. Just make sure you protect the tread with good
try-catch so you don't bust out of the watching thread
on some goofy error...you'll have to weigh this
obviously. Setup a simple event mechanism like:
public interface FileChangeListener extends
java.util.EventListener {
public void fileChanged(FileChangeEvent evt);
}
public class FileChangeEvent extends
java.util.EventObject {
public static final int TYPE_NEW = 1;
public static final int TYPE_MODIFIED = 2;
private int eventType = TYPE_NEW;
private MonitoredFile source = null;
private MonitoredFile watched = null;
public FileChangeEvent(){
}
public void setSource(MonitoredFile source){
this.source = source;
}
public MonitoredFile getSource(){
return this.source;
}
//...
//put other setters here for watched and type
}
public class MonitoredFile extends File {
public void
addFileChangeListener(FileChangeListener listener){
//if using a JDK/JRE with
javax.swing.event.EventListenerList
then use that for holding the events...just makes it
a little easier
}
public void
removeFileChangeListener(FileChangeListener listener){
//use your javax.swing.event.EventListenerList
}
public FileChangeListener[]
getFileChangeListeners(){
//use your javax.swing.event.EventListenerList
}
public void fireFileChangeEvent(FileChangeEvent
evt) throws Throwable {
//get all the listeners set for FileChangeEvent
and call fileChanged(evt)
}
}
now all you would have to do is to create a class for
watching your directory which you can do different
things...either watch a directory and all sub
directoriesif you don't watch sub directories you
can simply call File.listFiles or File.list depending
on whether you want File objects or String objects.
If you want to watch all the directories then you can
use this code I'll give you ... what the heck.
public static void enumerateFiles(Vector out,
String dir, int howDeep) throws Throwable {
enumerateFiles(out, dir, 0, howDeep);
}
/**
*File used to recursively run over and sort a
directory hierarchy to flatten out the directory
*structure of a file system into an array or in
this case a Vector.
[EMAIL PROTECTED] out the Vector the enumerated file names
will be written to. These will be sorted with each
* directory listing with
java.util.Arrays.sort(File[]) so see that method for
the format of the
* sort
[EMAIL PROTECTED] dir the directory we want the listing for
[EMAIL PROTECTED] deepCounter the counter for tracking how
deep we can go. This should be 0 in normal calls
[EMAIL PROTECTED] howDeep the number of directory levels
deep we want to return
*/
protected static
Invalid keystore format
Dear All, I encouter the following error while I establish an SSL connection to the other machine. java.net.SocketException: Default SSL context init failed: Invalid keystore format at javax.net.ssl.DefaultSSLSocketFactory.createSocket(DashoA12275) at sun.net.www.protocol.https.HttpsClient.doConnect(DashoA12275) at sun.net.www.http.HttpClient.openServer(HttpClient.java:402) at sun.net.www.http.HttpClient.openServer(HttpClient.java:618) at sun.net.www.protocol.https.HttpsClient.init(DashoA12275) at sun.net.www.protocol.https.HttpsClient.a(DashoA12275) at sun.net.www.protocol.https.HttpsClient.a(DashoA12275) at sun.net.www.protocol.https.HttpsClient.a(DashoA12275) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.plainConnect(DashoA12275) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(DashoA12275) at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:569) at com.sun.net.ssl.internal.www.protocol.https.HttpsURLConnectionOldImpl.getOutputStream(DashoA12275) at com.gridnode.pdip.base.transport.helpers.OutputStreamThread.run(GNHttpConnection.java:130) Did anyone encounter such problem before ? Kindly for your reply Thx - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
