HTTP2:When does tomcat send continuous RST_STREAM with reason REFUSED _STREAM

[Arshiya Shariff]

Hi,

What are the cases when tomcat sends RST_STREAM with reason REFUSED_STREAM 
continuously for every http2 request from the client ?
Also , In this case we did not see the max concurrent streams reaching 100.
Embedded Tomcat : 9.0.22

Thanks and Regards
Arshiya Shariff

Re: Tomcat relicts from previous installation - ubuntu

[calder]

>
> Am 09.07.2020 um 15:19 schrieb calder :
>
> On Thu, Jul 9, 2020, 06:59 Christoph Kukulies  wrote:.
>
> might try:
> user@machine:~ /> ps systemctl status 
> so in your example
> user@machine:~ /> ps systemctl status 1092
>
>
> systemctl status 1092
>
> worked (without the „ps“) :)
>
> sorry about that ... somehow fat-fingered that in : /
>
> On Thu, Jul 9, 2020, 11:13 Christoph Kukulies  wrote:

Is it an Ubuntu peculiarity that a tomcat.service gets installed? I assume,
I’m getting this automatically when doing an
apt-get install tomcat8, right?



For a distro-specific Tomcat install - meaning the Ubuntu team customized
the packaging and created the expected / related services...
... yes, a service would be automagically configured to start up Tomcat.

Most all distros do that ... if you elect to install the software, but DO
NOT want the service to be automagically started, you'd need to explicitly
stop and / or disable it.

Re: Problem with JarScanFilter, maybe a bug?

[Vitor Medina Cruz]

On Mon, Jul 6, 2020 at 5:05 PM Christopher Schultz <
ch...@christopherschultz.net> wrote:

> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> Vitor,
>
> On 7/6/20 15:50, Vitor Medina Cruz wrote:
> > On Mon, Jul 6, 2020 at 8:57 AM Mark Thomas 
> > wrote:
> >
> >> On 06/07/2020 12:25, Mark Thomas wrote:
> >>> On 03/07/2020 13:40, Vitor Medina Cruz wrote:
>  On Thu, Jul 2, 2020 at 11:21 AM Mark Thomas
>   wrote:
> 
> > On 02/07/2020 14:14, Vitor Medina Cruz wrote:
> >> On Wed, Jul 1, 2020 at 6:48 PM Mark Thomas
> >>  wrote:
> >
> > 
> >
> >>> @WebFiler, @WebListener and @WebServlet are deployment
> >>> annotations so scanning for these is controlled by the
> >>> JarScanner.
> >>>
> >>> If an SCI has an @HandlesTypes annotation then all JARs
> >>> that are potential SCI sources will be scanned for
> >>> matches. To put it another way, the JarScanner
> >>> configuration does NOT control the search for
> >>> @HandlesTypes matches. Any JAR eligible to provide an
> >>> SCI will be scanned for @HandlesTypes. Those JARs are
> >>> controlled by
> > 
> >>>
> >>
> >> Ok, and if a jar doesn't provide a web-fragment name? In
> >> this old
> >> post(
> >>
> >
> >> http://tomcat.10.x6.nabble.com/Why-does-absolute-ordering-in-web-xml-
> without-others-kill-classpath-scanning-td5029985.html
> 
> >
> >>
> )
> >> it is said :
> >>
> >> "Tomcat will give these a name equal to the name of the
> >> JAR file so
> >> you
> > can
> >> use it in ordering. That is a Tomcat specific feature."
> >>
> >> This is/holds true? I tried with no success
> >
> > It should do. So for foobar-0.3.jar the name should be
> > "foobar-0.3.jar"
> >
> >
>  Don't work... :( both in Tomcat 8.5.56 and 9.0.36 I got a
>  "Used a wrong fragment name [flow-server-2.2.1.jar] at
>  web.xml absolute-ordering tag"
> >>>
> >>> Hmm. Let me look into what is going on here...
> >>
> >> My memory and the comment from 2015 were incorrect. It is the
> >> full URL that is used rather than just the name.
> >>
> >> While the JAR name should be unique within WEB-INF/lib, the JAR
> >> scanning extends outside of that to include CATALINA_BASE/lib and
> >> potentially the the bootstrap class path. Duplicates can trigger
> >> deployment failure - hence the more cautious approach.
> >>
> >> As an example, this is the URL on my system (taken from Tomcat
> >> 10.0.x but the code should be the same in 9.0.x and 8.5.x):
> >>
> >>
> >> file:/home/mark/repos/asf-tomcat-10.0.x/output/build/webapps/examples
> /WEB-INF/lib/taglibs-standard-impl-1.2.5-migrated-0.0.1.jar
> >>
> >>
> >>
> Rather long for a fragment but it ensures uniqueness.
> >>
> >
> > Thanks, that worked! In my windows machine I used file:/C:/ > the path>
> >
> >
> > Is it possible to use relative path of some sort in order to not
> > tie this config to my machine?
>
> No promises, but you could try:
>
> ${catalina.base}/path/relative/to/tomcat
>
> for example:
>
> ${catalina.base}/webapps/mywebapp/WEB-INF/lib/taglibs-standard-impl-1.2.
> 5-migrated-0.0.1.jar
>
> I don't know if the system-property-replacement will be honored in
> that particular context, but it is supported in others. It seems like
> that could be added if it's not already supported.
>

Thanks, but that won't do, differences between dev-debug env and production
don't make that practical. If I could start from the webapp deployed folder
would be better, like this:

${deploy.foler}/WEB-INF/lib/taglibs-standard-impl-1.2

But I will take that isn't possible. :(

regards,
Vitor



>
> - -chris
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Re: Tomcat relicts from previous installation - ubuntu

[Martin Grigorov]

On Thu, Jul 9, 2020, 19:13 Christoph Kukulies  wrote:

> Is it an Ubuntu peculiarity that a tomcat.service gets installed? I
> assume, I’m getting this automatically when doing an
> apt-get install tomcat8, right?
>

Yes. All distros do that.
You can download the tar.gz file from https://tomcat.apache.org if you
prefer to manage it yourself.


> —
> Christoph
>
> Am 09.07.2020 um 15:19 schrieb calder :
>
> On Thu, Jul 9, 2020, 06:59 Christoph Kukulies  wrote:.
>
>
> might try:
> user@machine:~ /> ps systemctl status 
> so in your example
> user@machine:~ /> ps systemctl status 1092
>
>
> systemctl status 1092
>
>
>
> worked (without the „ps“) :)
>
>
> sorry about that ... somehow fat-fingered that in : /
>
>
>

Re: Tomcat relicts from previous installation - ubuntu

[Christoph Kukulies]

Is it an Ubuntu peculiarity that a tomcat.service gets installed? I assume, I’m 
getting this automatically when doing an
apt-get install tomcat8, right?

—
Christoph

> Am 09.07.2020 um 15:19 schrieb calder :
> 
> On Thu, Jul 9, 2020, 06:59 Christoph Kukulies  > wrote:.
> 
>>> 
>>> might try:
>>> user@machine:~ /> ps systemctl status 
>>> so in your example
>>> user@machine:~ /> ps systemctl status 1092
>> 
>> systemctl status 1092
>> 
> 
> 
> worked (without the „ps“) :)
> 
> 
> sorry about that ... somehow fat-fingered that in : /



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Re: [ANN] ApacheCon NA 2020 is virtual/online, completely free to attend, and call-for-presentations is OPEN!

[Christopher Schultz]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

All,

On 7/8/20 18:37, Christopher Schultz wrote:
> All,
>
> [Cross-posting to dev@, please reply to users@]
>
> ApacheCon NA 2020 is now "ApacheCon @Home" due to the COVID-19
> pandemic, and will be held online 29 September - 1 October 2020.
> This is a great opportunity for anyone who has never attended an
> ApacheCon event to make this year their first ApacheCon.
> Registration is FREE (zero-cost).
>
> For those who have never given a presentation at ApacheCon, this
> is also an opportunity for you to submit a presentation for our
> consideration: the call-for-papers is open and the Tomcat track is
> hoping to fill something like 12 - 36 hours worth of
> presentations, panels, and meet-ups at this conference.
>
> To register to attend or respond to the call-for-presentations,
> please visit https://www.apachecon.com/acna2020/
>
> Because the conference is being held online, obviously things will
> be a little different than previous events. First, all
> presentations will be streamed live and recorded for later replay
> if you can't make a live-streaming event. "Attendance" for a live
> presentation would mean streaming audio/video and at least a text
> channel by which questions can be asked. I don't believe video is
> supported for attendees (to see e.g. attendees faces) but it may be
> possible to ask questions via audio instead text. I will follow-up
> with the organizers regarding audience participation.
>
> To accommodate attendees (and presenters!) in various time-zones
> around the world, we will be attempting to schedule live
> presentations in 4-hour blocks at 3 different daily intervals
> throughout the 72-hour event.

To clarify, here are the presentation blocks we are looking to schedule:

4pm - 8pm China time   (0800 - 1200 UTC)
4pm - 8pm East Europe time (1300 - 1700 UTC)
4pm - 8pm West US time (2300 - 0300 UTC)

(I home my to-UTC math was correct.)

Thanks,
- -chris

> My goal is to encourage each speaker to present their material
> live /twice/ during the event, once in each of two separate
> timezone-centric blocks (e.g. North/South America, Europe/Africa,
> Asia/Oceana) if at all possible, and for several committers to be
> available to "staff" each presentation to introduce speakers,
> provide moderation of questions from the live-audience for the
> speakers, etc.
>
> Schedules will be announced after the presentations have been
> selected and everything is negotiated with the speakers about when
> they are available.
>
> If you are already considering submitting a presentation for
> including in ApacheCon 2020, please head-over to the CFP at
> https://www.apachecon.com/acna2020/
>
> If you aren't sure if you are interested in presenting, or aren't
> sure if you have the experience, knowledge, etc. to warrant a
> position as a speaker, please consider the following:
>
> 1. This is a welcoming community 2. This community exists to serve
> YOU 3. You are a part of this community 4. Helping others within
> the community encourages others to do the same 5. If you'd prefer
> to pre-record your presentation, we can handle that 6. Topics can
> be very wide-ranging. Here are some examples of presentations from
> previous ApacheCon events:
>
> [From Committers / directly about Tomcat] - Running Apache Tomcat
> on GraalVM - Tomcat in clusters and clouds - Using Let's Encrypt
> with Tomcat - Securing Tomcat - Reverse-proxying Tomcat - Load
> balancing with Tomcat - Clustering with Tomcat
>
> [From Non-Committers or not directly about Tomcat] - Packaging
> Tomcat for Linux Distributions - I Love Lucee -- a Java
> implementation of Cold Fusion - Routing CDN traffic at scale using
> Tomcat - Secure Web Applications using Apache Fortress - Monitoring
> Tomcat; various tools - Building Reactive Applications on Tomcat -
> Troubleshooting performance using thread dumps - High Throughput
> Production Systems on Tomcat - Why I Love Open Source -
> Introduction to Spring Boot - Tomcat, TomEE, and Meecrowave
>
> If you are using Tomcat at $work and doing something interesting,
> we'd love to hear about it.
>
> 7. You don't need to be the foremost expert in $feature to talk
> about it 8. We are actively looking for speakers to talk about
> these and other topics:
>
> - How to get started hacking on Tomcat ("How can I help?") -
> Running a "split" Tomcat installation (BASE vs HOME) for easy
> upgrades - Deploying Tomcat in an auto-scaling environment (e.g.
> AWS EBS) - Tomcat should really have [Feature X] - Whatever you
> think might be interesting!
>
> Please consider speaking if you haven't done so before. If you are
> worried about whether your idea is good enough: don't. Just submit
> your idea to the CFP -- you don't have to write-up the presentation
> in order to submit an idea, just write a paragraph or two about
> what you want to do -- and the track chairpersons (chairpeople?[1])
> will decide whether or not to include your presentation in 

Re: Tomcat relicts from previous installation - ubuntu

[calder]

On Thu, Jul 9, 2020, 06:59 Christoph Kukulies  wrote:.

> >
> > might try:
> > user@machine:~ /> ps systemctl status 
> > so in your example
> > user@machine:~ /> ps systemctl status 1092
>
> systemctl status 1092
>


worked (without the „ps“) :)


sorry about that ... somehow fat-fingered that in : /

Re: Tomcat relicts from previous installation - ubuntu

[Christoph Kukulies]

> Am 09.07.2020 um 13:34 schrieb calder :
> 
> On Thu, Jul 9, 2020 at 4:48 AM Christoph Kukulies  wrote:
>> 
>> I’m resurrecting tomcat on a server (Ubuntu 18.04.4) on which I had been 
>> running tomcat7 some time ago.
>> At the moment, when the system has started up, I’m seeing a process:
>> 
>> root@kuku:~# ps ax | grep -i tomcat
>> 1092 ?Sl 0:08 /usr/lib/jvm/java-1.11.0-openjdk-i386/bin/java 
>> -Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties 
>> -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 
>> -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom 
>> -Djdk.tls.ephemeralDHKeySize=2048 
>> -Djava.protocol.handler.pkgs=org.apache.catalina.webresources 
>> -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Xms512M 
>> -Xmx1024M -server -XX:+UseParallelGC -Dignore.endorsed.dirs= -classpath 
>> /usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar 
>> -Dcatalina.base=/usr/share/tomcat -Dcatalina.home=/usr/share/tomcat 
>> -Djava.io.tmpdir=/usr/share/tomcat/temp 
>> org.apache.catalina.startup.Bootstrap start
>> 2079 pts/0S+ 0:00 grep --color=auto -i tomcat
> 
>> root@kuku:~#
> 
> It's never a good idea to run as root.
> 
>> Since I have no tomcat service script in /etc/init.d I have no idea at the 
>> moment, who or which script is starting this java process.
> 
> might try:
> user@machine:~ /> ps systemctl status 
> so in your example
> user@machine:~ /> ps systemctl status 1092


systemctl status 1092

worked (without the „ps“) :)



smime.p7s
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Re: Tomcat relicts from previous installation - ubuntu

[Christoph Kukulies]

> Am 09.07.2020 um 13:28 schrieb Martin Grigorov :
> 
> Hi Christoph,
> 
> On Thu, Jul 9, 2020 at 12:48 PM Christoph Kukulies 
> wrote:
> 
>> I’m resurrecting tomcat on a server (Ubuntu 18.04.4) on which I had been
>> running tomcat7 some time ago.
>> At the moment, when the system has started up, I’m seeing a process:
>> 
>> root@kuku:~# ps ax | grep -i tomcat
>> 1092 ?Sl 0:08 /usr/lib/jvm/java-1.11.0-openjdk-i386/bin/java
>> -Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties
>> -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
>> -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom
>> -Djdk.tls.ephemeralDHKeySize=2048
>> -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
>> -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Xms512M
>> -Xmx1024M -server -XX:+UseParallelGC -Dignore.endorsed.dirs= -classpath
>> /usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar
>> -Dcatalina.base=/usr/share/tomcat -Dcatalina.home=/usr/share/tomcat
>> -Djava.io.tmpdir=/usr/share/tomcat/temp
>> org.apache.catalina.startup.Bootstrap start
>> 2079 pts/0S+ 0:00 grep --color=auto -i tomcat
>> root@kuku:~#
>> 
>> 
>> 
>> Since I have no tomcat service script in /etc/init.d I have no idea at the
>> moment, who or which script is starting this java process.
>> 
> 
> Most probably it is systemd.
> Try with: systemctl status tomcat
> 
> If this is the case you can stop it with: systemctl stop tomcat
> and disable it so it does not start on the next reboot with: systemctl
> disable tomcat
> 

Thanks, that helped.


> 
>> 
>> Any clues?


>> Christoph



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JASPIC and classloaders

[Roberto Benedetti]

Hello,
I'm developing a ServerAuthModule implementation to use a 3rd party identity 
provider with our web applications. Tomcat version is 9.0.35.
The implementation depends on some libraries already packaged with the web 
applications.
To avoid conflicts I tried to configure server.loader in catalina.properties 
with a directory containing the ServerAuthModule implementation and the 
dependencies, but it does not work because classes are not found.
It seems that authenticators and JASPIC classes are loaded by the common 
classloader and not the server (catalina) classloader.
Can anyone confirm this?
Is removing those dependencies from web applications and put them in 
${tomcat.home}/lib, the only solution?

Roberto

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Re: Tomcat relicts from previous installation - ubuntu

[calder]

On Thu, Jul 9, 2020 at 4:48 AM Christoph Kukulies  wrote:
>
> I’m resurrecting tomcat on a server (Ubuntu 18.04.4) on which I had been 
> running tomcat7 some time ago.
> At the moment, when the system has started up, I’m seeing a process:
>
> root@kuku:~# ps ax | grep -i tomcat
>  1092 ?Sl 0:08 /usr/lib/jvm/java-1.11.0-openjdk-i386/bin/java 
> -Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties 
> -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 
> -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom 
> -Djdk.tls.ephemeralDHKeySize=2048 
> -Djava.protocol.handler.pkgs=org.apache.catalina.webresources 
> -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Xms512M -Xmx1024M 
> -server -XX:+UseParallelGC -Dignore.endorsed.dirs= -classpath 
> /usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar 
> -Dcatalina.base=/usr/share/tomcat -Dcatalina.home=/usr/share/tomcat 
> -Djava.io.tmpdir=/usr/share/tomcat/temp org.apache.catalina.startup.Bootstrap 
> start
>  2079 pts/0S+ 0:00 grep --color=auto -i tomcat

> root@kuku:~#

It's never a good idea to run as root.

> Since I have no tomcat service script in /etc/init.d I have no idea at the 
> moment, who or which script is starting this java process.

might try:
user@machine:~ /> ps systemctl status 
so in your example
user@machine:~ /> ps systemctl status 1092

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Re: Tomcat relicts from previous installation - ubuntu

[Martin Grigorov]

Hi Christoph,

On Thu, Jul 9, 2020 at 12:48 PM Christoph Kukulies 
wrote:

> I’m resurrecting tomcat on a server (Ubuntu 18.04.4) on which I had been
> running tomcat7 some time ago.
> At the moment, when the system has started up, I’m seeing a process:
>
> root@kuku:~# ps ax | grep -i tomcat
>  1092 ?Sl 0:08 /usr/lib/jvm/java-1.11.0-openjdk-i386/bin/java
> -Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties
> -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
> -Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom
> -Djdk.tls.ephemeralDHKeySize=2048
> -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
> -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Xms512M
> -Xmx1024M -server -XX:+UseParallelGC -Dignore.endorsed.dirs= -classpath
> /usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar
> -Dcatalina.base=/usr/share/tomcat -Dcatalina.home=/usr/share/tomcat
> -Djava.io.tmpdir=/usr/share/tomcat/temp
> org.apache.catalina.startup.Bootstrap start
>  2079 pts/0S+ 0:00 grep --color=auto -i tomcat
> root@kuku:~#
>
>
>
> Since I have no tomcat service script in /etc/init.d I have no idea at the
> moment, who or which script is starting this java process.
>

Most probably it is systemd.
Try with: systemctl status tomcat

If this is the case you can stop it with: systemctl stop tomcat
and disable it so it does not start on the next reboot with: systemctl
disable tomcat


>
> Any clues?
>
> Christoph
>
>
>
>
>

Tomcat relicts from previous installation - ubuntu

[Christoph Kukulies]

I’m resurrecting tomcat on a server (Ubuntu 18.04.4) on which I had been 
running tomcat7 some time ago.
At the moment, when the system has started up, I’m seeing a process:

root@kuku:~# ps ax | grep -i tomcat
 1092 ?Sl 0:08 /usr/lib/jvm/java-1.11.0-openjdk-i386/bin/java 
-Djava.util.logging.config.file=/usr/share/tomcat/conf/logging.properties 
-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 
-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom 
-Djdk.tls.ephemeralDHKeySize=2048 
-Djava.protocol.handler.pkgs=org.apache.catalina.webresources 
-Dorg.apache.catalina.security.SecurityListener.UMASK=0027 -Xms512M -Xmx1024M 
-server -XX:+UseParallelGC -Dignore.endorsed.dirs= -classpath 
/usr/share/tomcat/bin/bootstrap.jar:/usr/share/tomcat/bin/tomcat-juli.jar 
-Dcatalina.base=/usr/share/tomcat -Dcatalina.home=/usr/share/tomcat 
-Djava.io.tmpdir=/usr/share/tomcat/temp org.apache.catalina.startup.Bootstrap 
start
 2079 pts/0S+ 0:00 grep --color=auto -i tomcat
root@kuku:~# 



Since I have no tomcat service script in /etc/init.d I have no idea at the 
moment, who or which script is starting this java process.

Any clues?

Christoph






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Re: Looking for mod_proxy_ajp or mod_proxy_http users

[Michael Osipov]

Am 2020-07-08 um 23:52 schrieb Christopher Schultz:

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Hash: SHA256

All,

I'm (likely) giving a presentation at this year's ApacheCon North
America (which is *virtual* this year, so the "North America" just
means "it was supposed to be in New Orleans in September" but anyone
can attend ... FOR FREE!) about migrating from mod_jk ->
mod_proxy_http and I'd like some feedback on my draft slides.

Is anyone using mod_proxy_ajp or mod_proxy_http in a production
setting and has a lot of experience with getting it all to work well?
My 20 years or so of experience with proxying to Tomcat has always
used mod_jk so I'm sure there are some obvious things I'm not thinking
about because mod_jk was designed to pretty much work right out of the
box.


I wouldn't say I have a lot of experience, but I am using mod_proxy_http 
for quite a while. I wish I could use Tomcat directly, there are several 
annoying bugs in mod_proxy_http discussing with httpd devs.


Michael

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ApacheCon @home CfP closes in 4 days

[jean-frederic clere]

Hi folks,

The Call for Papers will close in 4 days, don't shy we are looking for 
topics about how you use Tomcat, so please submit.


The conference will take place ONLINE the 29 September to 1 of October.

Check: https://acna2020.jamhosted.net/ and remember NO travels you just 
need a webcam and an internet connection: anyone can try ;-)


--
Cheers

Jean-Frederic

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[ANN] Apache Tomcat 7.0.105 released

[Violeta Georgieva]

The Apache Tomcat team announces the immediate availability of Apache
Tomcat 7.0.105.

Apache Tomcat is an open source software implementation of the Java
Servlet, JavaServer Pages, Java Expression Language and Java
WebSocket technologies.

This release contains a number of bug fixes and improvements compared to
version 7.0.104. The notable changes since 7.0.104 include:


- Add support for the CATALINA_OUT_CMD environment variable that defines
  a command to which captured stdout and stderr will be redirected. For
  use with, for example, rotatelogs. Patch provided by Harald Dunkel.


Please refer to the change log for the complete list of changes:
http://tomcat.apache.org/tomcat-7.0-doc/changelog.html

Apache Tomcat website:
http://tomcat.apache.org

Downloads:
http://tomcat.apache.org/download-70.cgi

Migration guides from Apache Tomcat 5.5.x and 6.0.x:
http://tomcat.apache.org/migration.html

Enjoy

The Apache Tomcat team