https://issues.apache.org/bugzilla/show_bug.cgi?id=56449
--- Comment #2 from Konstantin Preißer <kpreis...@apache.org> ---
Hi Mark,
FYI, I can reproduce the given stack trace if I use a client that sends an
initial Websocket Request but immediately closes the TCP connection. E.g., when
running the following Java code on Windows while Tomcat (trunk) is running
using the NIO connector:
String str = "GET /examples/websocket/chat HTTP/1.1\r\n"
+ "Host: localhost:8080\r\n"
+ "Sec-WebSocket-Version: 13\r\n"
+ "Origin: http://localhost:8080\r\n";
+ "Sec-WebSocket-Key: 8Ydn5qfZ/eg0v37Jh4n6tw==\r\n"
+ "Connection: keep-alive, Upgrade\r\n"
+ "Upgrade: websocket\r\n\r\n";
byte[] bytes = str.getBytes("UTF-8");
try (Socket s = new Socket("127.0.0.1", 8080)) {
s.getOutputStream().write(bytes);
}
I then get the following exceptions (I think the first is expected):
24-Apr-2014 00:07:57.351 SEVERE [http-nio-8080-exec-1]
websocket.chat.ChatAnnotation.onError Chat Error: java.io.IOException:
java.util.concurrent.ExecutionException:
java.nio.channels.ClosedChannelException
java.io.IOException: java.util.concurrent.ExecutionException:
java.nio.channels.ClosedChannelException
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:242)
at
org.apache.tomcat.websocket.WsSession.sendCloseMessage(WsSession.java:486)
at org.apache.tomcat.websocket.WsSession.doClose(WsSession.java:417)
at org.apache.tomcat.websocket.WsSession.close(WsSession.java:394)
at org.apache.tomcat.websocket.WsSession.close(WsSession.java:388)
at websocket.chat.ChatAnnotation.broadcast(ChatAnnotation.java:99)
at websocket.chat.ChatAnnotation.start(ChatAnnotation.java:59)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.tomcat.websocket.pojo.PojoEndpointBase.doOnOpen(PojoEndpointBase.java:58)
at
org.apache.tomcat.websocket.pojo.PojoEndpointServer.onOpen(PojoEndpointServer.java:70)
at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:129)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:678)
at
org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1575)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1533)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.ExecutionException:
java.nio.channels.ClosedChannelException
at
org.apache.tomcat.websocket.FutureToSendHandler.get(FutureToSendHandler.java:102)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:235)
... 20 more
Caused by: java.nio.channels.ClosedChannelException
at sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:265)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:474)
at org.apache.tomcat.util.net.NioChannel.write(NioChannel.java:122)
at
org.apache.tomcat.util.net.NioSelectorPool.write(NioSelectorPool.java:184)
at
org.apache.coyote.http11.upgrade.NioServletOutputStream.doWriteInternal(NioServletOutputStream.java:94)
at
org.apache.coyote.http11.upgrade.NioServletOutputStream.doWrite(NioServletOutputStream.java:61)
at
org.apache.coyote.http11.upgrade.AbstractServletOutputStream.writeInternal(AbstractServletOutputStream.java:158)
at
org.apache.coyote.http11.upgrade.AbstractServletOutputStream.write(AbstractServletOutputStream.java:124)
at
org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.onWritePossible(WsRemoteEndpointImplServer.java:99)
at
org.apache.tomcat.websocket.server.WsRemoteEndpointImplServer.doWrite(WsRemoteEndpointImplServer.java:81)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.writeMessagePart(WsRemoteEndpointImplBase.java:390)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessage(WsRemoteEndpointImplBase.java:284)
at
org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessageBlock(WsRemoteEndpointImplBase.java:230)
... 20 more
24-Apr-2014 00:07:57.397 SEVERE [http-nio-8080-exec-1]
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process Error
reading request, ignored
java.lang.IllegalStateException: The WebSocket session [0] has been closed and
no method (apart from close()) may be called on a closed session
at org.apache.tomcat.websocket.WsSession.checkState(WsSession.java:652)
at
org.apache.tomcat.websocket.WsSession.addMessageHandler(WsSession.java:168)
at
org.apache.tomcat.websocket.pojo.PojoEndpointBase.doOnOpen(PojoEndpointBase.java:81)
at
org.apache.tomcat.websocket.pojo.PojoEndpointServer.onOpen(PojoEndpointServer.java:70)
at
org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.init(WsHttpUpgradeHandler.java:129)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:678)
at
org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1575)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1533)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
This happens only if the client immediately closes the connection after sending
the request. If it waits a bit before closing it (or I just connect with a
browser like Firefox), I don't get any error.
However, I don't know if the cause of that exception is the same as in the
original report.
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