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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 45580] New: Unhandled NullPointerException when trying to write to a closed socket.
Date Wed, 06 Aug 2008 12:52:26 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=45580

           Summary: Unhandled NullPointerException when trying to write to a
                    closed socket.
           Product: Tomcat 6
           Version: unspecified
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: friendpadma@gmail.com


Description of the scenario:

Consider a client using web Messaging service with NIOConnector configured.
Suppose if the client is closed by the time server writes the response to the
socket, it throws a NPE. It appears that there is no check for the null socket
condition. I think the addition of a null check will correct this.

The stack trace of the exception is: 

[ActiveMQMessageConsumer] Exception while processing message:
java.lang.NullPointerException
java.lang.NullPointerException
        at
org.apache.coyote.http11.InternalNioOutputBuffer.addToBB(InternalNioOutputBuffer.java:607)
        at
org.apache.coyote.http11.InternalNioOutputBuffer.commit(InternalNioOutputBuffer.java:600)
        at
org.apache.coyote.http11.Http11NioProcessor.action(Http11NioProcessor.java:1034)
        at org.apache.coyote.Response.action(Response.java:183)
        at org.apache.coyote.Response.sendHeaders(Response.java:379)
        at
org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:305)
        at
org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:273)
        at
org.apache.catalina.connector.CoyoteOutputStream.close(CoyoteOutputStream.java:104)


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