B4J Library jServer & jWebSocketClient using Jetty 11.0.26

[UPDATE: @Erel has now released an official (beta) jServer v4.10 with dependencies updated to jetty 11.0.26. I suggest you start there:
https://www.b4x.com/android/forum/threads/jserver-v4-0-based-on-jetty-11.140437/post-1047071 ]


I did this more as a learning exercise than anything else and also because I noted a later version of jetty 11 had been released that addressed a CVE (CVE-2025-5115) .
I thought I'd post it here in case anyone is interested.
Also, because I really didn't know what I was doing, and was largely copying the work of @Erel, @tchart, & @teddybear, I'd be grateful if someone can check what I've done here and point out any problems. Thanks.
Credits & helpful info:
@tchart - https://www.b4x.com/android/forum/threads/jserver-4-keeping-jetty-up-to-date.161151/post-988986
@Erel - https://www.b4x.com/android/forum/threads/jwebsocketclientv2.156357/post-963635, https://www.b4x.com/android/forum/threads/jserver-v4-0-based-on-jetty-11.140437/
@teddybear - https://www.b4x.com/android/forum/t...er-11-0-21-packaging-error.162092/post-994492,

A version of jServer based on Jetty 11.0.26 is available to download from here (too big for forum attachment), and attached is a version of the jWebSocketClient library that uses that jServer-11.0.26.
jServer-11.0.26 is based on jServer 4.03
jWebSocketClient-11.0.26 is based on jWebSocketClient V2

To install:
jServer-11.0.26
Download the zip file from here, and extract the contents into the internal libraries folder. You should then have jServer-11.0.26.jar, jServer-11.0.26.xml, and the folder jserver-11.0.26 which contains 37 jar files.
Refresh your libraries in B4J. The new version should appear as jServer-11.0.26.

As per @Erel's original jServer v4.0 post, the following declarations are needed for the standalone packager:

#PackagerProperty: AdditionalModuleInfoString = provides org.slf4j.spi.SLF4JServiceProvider with org.eclipse.jetty.logging.JettyLoggingServiceProvider;
#PackagerProperty: AdditionalModuleInfoString = provides org.eclipse.jetty.io.ssl.ALPNProcessor.Server with org.eclipse.jetty.alpn.java.server.JDK9ServerALPNProcessor;
#PackagerProperty: AdditionalModuleInfoString = provides org.eclipse.jetty.http.HttpFieldPreEncoder with org.eclipse.jetty.http2.hpack.HpackFieldPreEncoder, org.eclipse.jetty.http.Http1FieldPreEncoder;
#PackagerProperty: AdditionalModuleInfoString = uses org.eclipse.jetty.util.security.CredentialProvider;
#PackagerProperty: AdditionalModuleInfoString = uses org.eclipse.jetty.io.ssl.ALPNProcessor.Server;
#PackagerProperty: IncludedModules = jdk.charsets, jdk.crypto.ec, java.sql, java.instrument, java.xml, java.security.jgss, java.rmi, java.naming, java.management, java.desktop

[note the extra IncludedModules based on @teddybear's & @tchart's help]

jWebSocketClient-11.0.26:
Copy the contents of the attached zip (jWebScocketClient-11.0.26.zip containing jWebSocketClient-11.0.26.jar & jWebSocketClient-11.0.26.xml) to the internal libraries folder.
Refresh your libraries in B4J. The new version should appear as jWebScocketClient-11.0.26.

As per @Erel's post above in order to build a standalone package you need:

#AdditionalJar: jserver-11.0.26/jetty-webapp-11.0.26.jar
#PackagerProperty: AdditionalModuleInfoString = provides org.slf4j.spi.SLF4JServiceProvider with org.eclipse.jetty.logging.JettyLoggingServiceProvider;
#PackagerProperty: IncludedModules = java.desktop, jdk.charsets, jdk.crypto.ec

[note the addition of java.desktop in the IncludedModules]

[EDIT: I have found that some apps using the jWebScocketClient-11.0.26 library need extra IncludedModules. I suggest that anyone encountering java.lang.ClassNotFoundException errors when using these libraries follow the instructions here from @Daestrum to determine which modules need to be added]

Spoiler: What I did:

jServer-11.0.26
1. Copied the jar/xml from jServer 4.03, and renamed to jServer-11.0.26.jar & jServer-11.0.26.xml.

2. Downloaded Jetty 11.0.26, created a folder called jserver-11.0.26 in the B4J internal libraries folder and copied the required files from jetty 11.0.26 into the jserver-11.0.26 folder.
[NOTE: the downloaded Jetty 11.0.26 file contained many more jar files than in the existing jserver folders; I copied across only the new equivalents of the jar files that existed in the original jserver folder - I presume the others are not needed (perhaps someone can confirm this?)]

3. Amended the jServer-11.0.26.xml file sections <version> to 11.26, & each <dependsOn> to use the jServer 11.0.26 files in a folder named jserver-11.0.26.

4. Removed the module info (module-info.class) from these jars:
jetty-io-11.0.26.jar,
jetty-alpn-java-server-11.0.26.jar,
http2-server-11.0.26.jar,
http2-hpack-11.0.26.jar,
http2-common-11.0.26.jar,
jetty-alpn-server-11.0.26.jar.

5. Added the IncludedModules as described above

After this, my server app runs OK through the IDE and building a standalone package goes through without any errors too.


jWebSocketClient-11.0.26
1. Copied the existing library files (jWebSocketClient.jar & jWebSocketClient.xml) and renamed them with '-11.0.26' appended to the file name - jWebSocketClient-11.0.26.jar & jWebSocketClient-11.0.26.xml).

2. Ammended the jWebSocketClient-11.0.26.xml file sections <version> to 11.26, & each <dependsOn> to use the jServer 11.0.26 files in a folder named jserver-11.0.26.

3. In app main module changed the existing dependency to

#AdditionalJar: jserver-11.0.26/jetty-webapp-11.0.26.jar

and added the IncludedModules declaration described in @Erel's post linked above.

At this point the app ran OK but building a stand-alone package generated an error:

Exception in thread "main" java.lang.module.FindException: Module org.slf4j not found, required by org.eclipse.jetty.util

4. Based on @teddybear's post above, I removed the module info (module-info.class) from jetty-util-11.0.26.jar.

A new error:

Exception in thread "main" java.lang.module.FindException: Module org.slf4j not found, required by org.eclipse.jetty.websocket.core.common

5. Removed the module info (module-info.class) from websocket-core-common-11.0.26.jar, then ....

module-info.java:7: error: package javax.imageio.spi is not visible
uses javax.imageio.spi.ImageReaderSpi;
^
(package javax.imageio.spi is declared in module java.desktop, but module b4j does not read it)
1 error

6. So I added java.desktop to the #PackagerProperty: IncludedModules declaration.

And now the app seems to be running and packaging successfully.