I'm newbie in WebRtc technology and I have to implement audio/video and data exchanging using my own tomcat server for signaling.
I've already fork mobicents implementation from github (https://github.com/Mobicents/sip-servlets), but it is huge project which is not working properly and I don't have knowledge to fix/configure it.
I will be glad for some instructions how to implement server side in java, or maybe some working, brief example. Of course, I have been looking for tutorials online, but I didn't found anything understandable.
edit:
For now, I am trying to run mobicents demo websockets-sip-servlet. I am obtaining some error in the console at browser such as:
* PrivateJainSipClientConnector:processSipRegisterResponse(): SIP registration failed:500 [object Object]
* GET http://localhost:8080/websockets-sip-servlet/Room/undefined 404 (Not Found)
* POST https://api.xirsys.com/getIceServers 400 (Bad Request)
I have downloaded tomcat 8 release from https://mobicents.ci.cloudbees.com/job/MobicentsSipServlets-Release/lastSuccessfulBuild/artifact/.
and stack trace from tomcat logs:
2015-05-20 14:56:15,891 ERROR [org.mobicents.servlet.sip.core.dispatchers.DispatchTask] (SIP-TCP-Core-PipelineThreadpool-2) Unexpected exception while processing message REGISTER sip:telestax.com SIP/2.0
[...]
org.mobicents.servlet.sip.core.DispatcherException: An unexpected servlet exception occured while routing an initial request
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher$InitialDispatchTask.dispatch(InitialRequestDispatcher.java:744)
at org.mobicents.servlet.sip.core.dispatchers.DispatchTask.dispatchAndHandleExceptions(DispatchTask.java:61)
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher.dispatchInsideContainer(InitialRequestDispatcher.java:454)
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher.dispatchMessage(InitialRequestDispatcher.java:309)
at org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl.processRequest(SipApplicationDispatcherImpl.java:825)
at gov.nist.javax.sip.EventScanner.deliverEvent(EventScanner.java:230)
at gov.nist.javax.sip.SipProviderImpl.handleEvent(SipProviderImpl.java:185)
at gov.nist.javax.sip.DialogFilter.processRequest(DialogFilter.java:1324)
at gov.nist.javax.sip.stack.SIPServerTransactionImpl.processRequest(SIPServerTransactionImpl.java:807)
at gov.nist.javax.sip.stack.ConnectionOrientedMessageChannel.processMessage(ConnectionOrientedMessageChannel.java:452)
at gov.nist.javax.sip.stack.NioWebSocketMessageChannel.processMessage(NioWebSocketMessageChannel.java:287)
at gov.nist.javax.sip.parser.NioPipelineParser$Dispatch.run(NioPipelineParser.java:174)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: javax.servlet.ServletException: the sip servlet with the name WebSocketB2BUASipServlet doesn't exist in the sip application WebsocketSample
at org.mobicents.servlet.sip.core.session.SipSessionImpl.setHandler(SipSessionImpl.java:1317)
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher$InitialDispatchTask.dispatch(InitialRequestDispatcher.java:741)
... 14 more
2015-05-20 14:56:15,904 ERROR [org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl] (SIP-TCP-Core-PipelineThreadpool-2) Unexpected exception while processing request REGISTER sip:telestax.com SIP/2.0
[...]
java.lang.IllegalStateException: Cannot create a response for request REGISTER sip:telestax.com SIP/2.0
transaction is null, a final error response has probably already been sent
at org.mobicents.servlet.sip.message.SipServletRequestImpl.createResponse(SipServletRequestImpl.java:309)
at org.mobicents.servlet.sip.message.SipServletRequestImpl.createResponse(SipServletRequestImpl.java:290)
at org.mobicents.servlet.sip.core.dispatchers.MessageDispatcher.sendErrorResponse(MessageDispatcher.java:126)
at org.mobicents.servlet.sip.core.dispatchers.DispatchTask.dispatchAndHandleExceptions(DispatchTask.java:69)
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher.dispatchInsideContainer(InitialRequestDispatcher.java:454)
at org.mobicents.servlet.sip.core.dispatchers.InitialRequestDispatcher.dispatchMessage(InitialRequestDispatcher.java:309)
at org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl.processRequest(SipApplicationDispatcherImpl.java:825)
at gov.nist.javax.sip.EventScanner.deliverEvent(EventScanner.java:230)
at gov.nist.javax.sip.SipProviderImpl.handleEvent(SipProviderImpl.java:185)
at gov.nist.javax.sip.DialogFilter.processRequest(DialogFilter.java:1324)
at gov.nist.javax.sip.stack.SIPServerTransactionImpl.processRequest(SIPServerTransactionImpl.java:807)
at gov.nist.javax.sip.stack.ConnectionOrientedMessageChannel.processMessage(ConnectionOrientedMessageChannel.java:452)
at gov.nist.javax.sip.stack.NioWebSocketMessageChannel.processMessage(NioWebSocketMessageChannel.java:287)
at gov.nist.javax.sip.parser.NioPipelineParser$Dispatch.run(NioPipelineParser.java:174)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
it is not a full stacktrace
Can you explain what are you trying to achieve exactly so that it is easier to guide you ? First, it would be easier to download a binary than working from the source code. So try to use a newer release from https://mobicents.ci.cloudbees.com/job/MobicentsSipServlets-Release/lastSuccessfulBuild/artifact/
Mobicents SIP Servlets and Restcomm uses WebRTComm as the Client Side Javascript library. This library allows you do use a simple API abstracting the complexities of WebRTC and use SIP Over WebSockets as the signaling protocol for exchanging chat messages or setting up and tearing down Audio and Video calls.
RestComm comes by default with a WebRTC client that you can use and customize to fit your needs see http://www.telestax.com/livechat-and-video-call-with-restcomm/ or you can download the newer version we are working on https://github.com/Mobicents/olympus and help contributing to it.