RTMP audio/video client

[solomax]

Hello Paul,

The colleague of mine Artem Horuzhenko currently implementing video support for red5sip [0]

On certain circumstances (red5sip sends and receives both audio and H264 video) Red5 (r4393) crashes while decoding video packets:

org.red5.server.net.protocol.ProtocolException: Header is null, check for error

at org.red5.server.net.rtmp.codec.RTMPProtocolDecoder.decodePacket(RTMPProtocolDecoder.java:321) ~[red5.jar:na]

at org.red5.server.net.rtmp.codec.RTMPProtocolDecoder.decode(RTMPProtocolDecoder.java:183) ~[red5.jar:na]

at org.red5.server.net.rtmp.codec.RTMPProtocolDecoder.decodeBuffer(RTMPProtocolDecoder.java:118) ~[red5.jar:na]

at org.red5.server.net.rtmp.codec.RTMPMinaProtocolDecoder.decode(RTMPMinaProtocolDecoder.java:57) [red5.jar:na]

at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:241) [red5.jar:na]

at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434) [red5.jar:na]

at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46) [red5.jar:na]

at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:796) [red5.jar:na]

at org.red5.server.net.rtmpe.RTMPEIoFilter.messageReceived(RTMPEIoFilter.java:124) [red5.jar:na]

at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434) [red5.jar:na]

at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:46) [red5.jar:na]

at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:796) [red5.jar:na]

at org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:119) [red5.jar:na]

at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:434) [red5.jar:na]

at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:426) [red5.jar:na]

at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:697) [red5.jar:na]

at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:651) [red5.jar:na]

at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:640) [red5.jar:na]

at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$600(AbstractPollingIoProcessor.java:67) [red5.jar:na]

at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:1111) [red5.jar:na]

at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64) [red5.jar:na]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [na:1.7.0_09]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [na:1.7.0_09]

at java.lang.Thread.run(Thread.java:722) [na:1.7.0_09]

After several such Exception server starts to get OutOfMemoryException(s).

Red5 (r4604) seems to disconnect client

While debugging Artyom found video packet is not fully read since chunkSize on server is less than on client (at least while packet was encoded).

BaseRTMPClientHandler.onChunkSize() contains the following line:

log.info("ChunkSize is not fully implemented: {}", chunkSize);

Maybe you can take a look at the code [1] and give us a hint how this can be fixed?

Maybe we are using client API somehow wrong?

I would really appreciate your help

Thanks in advance

PS red5 r4604 compatible version can be found here: [2] and it also doesn't work :(

[0] http://red5phone.googlecode.com/svn/branches/red5sip_2.1

[1] http://red5phone.googlecode.com/svn/branches/red5sip_2.1/src/java/org/red5/sip/app/RTMPRoomClient.java

[2] http://red5phone.googlecode.com/svn/branches/red5sip

[akhor666]

Server is falling when flash client sets chunkSize to 257. I overrided onChunkSize() method:

@Override

protected void onChunkSize(RTMPConnection conn, Channel channel, Header source, ChunkSize chunkSize) {

log.debug("onChunkSize");

// set read and write chunk sizes

RTMP state = conn.getState();

state.setReadChunkSize(chunkSize.getSize());

        // state.setWriteChunkSize(chunkSize.getSize());

log.info("ChunkSize is not fully implemented: {}", chunkSize);

}

and all works fine.

[Mondain]

Thanks for finding that, I'll add it right away.

Paul

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[solomax]

Hello Paul,

was it addressed in r4616?

[Mondain]

Yes and it was tested with xsplit client (since it had issues with chunk handling as well).

Paul

[solomax]

Unfortunately with you patch (red5 r4638)

we still got 

[WARN] [NioProcessor-8] org.red5.server.net.rtmp.RTMPMinaIoHandler - Exception caught on session: 7

org.apache.mina.core.write.WriteToClosedSessionException: null

With the patch proposed by Atryom (akhor666) everything works as expected