[jbossws-dev] [JBoss Web Services Development] - Keep alive doesn't doesn't work for closed TCP/IP connection

[richard.opalka@jboss.com]

My usecase:

I'm using JBossWS Netty client (via JAX-WS proxy API) with keep-alive feature enabled (this is the default).
When remote http server goes down and up again all lately used cached connections on client side will fail with the following exception:

  | java.io.IOException: Could not transmit message">javax.xml.ws.WebServiceException: java.io.IOException: Could not transmit message
  | 	at org.jboss.ws.core.jaxws.client.ClientImpl.handleRemoteException(ClientImpl.java:392)
  | 	at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:302)
  | 	at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:170)
  | 	at org.jboss.ws.core.jaxws.client.ClientProxy.invoke(ClientProxy.java:150)
  | 	at $Proxy13.echo(Unknown Source)
  | 	at org.jboss.test.ws.jaxws.endpoint.jse.UsecasesTestCase.invokeEndpoint1(UsecasesTestCase.java:128)
  | 	at org.jboss.test.ws.jaxws.endpoint.jse.UsecasesTestCase.testTwoPortsAndLongPaths(UsecasesTestCase.java:86)
  | Caused by: java.io.IOException: Could not transmit message
  | 	at org.jboss.ws.core.client.transport.NettyClient.invoke(NettyClient.java:194)
  | 	at org.jboss.ws.core.client.HTTPRemotingConnection.invoke(HTTPRemotingConnection.java:150)
  | 	at org.jboss.ws.core.client.SOAPProtocolConnectionHTTP.invoke(SOAPProtocolConnectionHTTP.java:69)
  | 	at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:344)
  | 	at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:290)
  | 	... 31 more
  | Caused by: java.util.concurrent.ExecutionException: java.nio.channels.ClosedChannelException
  | 	at org.jboss.ws.core.client.transport.WSResponseHandler$FutureResult.get(WSResponseHandler.java:178)
  | 	at org.jboss.ws.core.client.transport.WSResponseHandler$FutureResult.get(WSResponseHandler.java:113)
  | 	at org.jboss.ws.core.client.transport.NettyClient.invoke(NettyClient.java:156)
  | 	... 35 more
  | Caused by: java.nio.channels.ClosedChannelException
  | 	at org.jboss.netty.channel.socket.nio.NioWorker.cleanUpWriteBuffer(NioWorker.java:624)
  | 	at org.jboss.netty.channel.socket.nio.NioWorker.write(NioWorker.java:353)
  | 	at org.jboss.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipelineSink.java:124)
  | 	at org.jboss.netty.channel.Channels.write(Channels.java:889)
  | 	at org.jboss.netty.handler.codec.oneone.OneToOneEncoder.handleDownstream(OneToOneEncoder.java:76)
  | 	at org.jboss.netty.channel.Channels.write(Channels.java:869)
  | 	at org.jboss.netty.channel.Channels.write(Channels.java:818)
  | 	at org.jboss.netty.channel.AbstractChannel.write(AbstractChannel.java:236)
  | 	at org.jboss.ws.core.client.transport.NettyTransportOutputStream.close(NettyTransportOutputStream.java:142)
  | 	at org.jboss.ws.core.client.transport.NettyClient.writeRequest(NettyClient.java:240)
  | 	at org.jboss.ws.core.client.transport.NettyClient.invoke(NettyClient.java:147)
  | 	... 35 more
  | 

Our client side Netty connections cache have to implement algorithm that will detect, if cached connection is still alive (the one going to be returned to client).

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