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WebSphere Application Server exception can occur on a WebSockets upgrade request

Troubleshooting


Problem

The following message can occur on a WebSockets upgrade request: []MessageSentException: Message already sent.[] A null pointer exception follows the message.

Symptom

The following exceptions can occur during a WebSockets upgrade request.

WCChannelLink E com.ibm.ws.webcontainer.channel.WCChannelLink finishBufferAsynch SRVE8104E: Internal Server Error. Exception Message: [{0}]
                                 java.lang.NullPointerException
        at com.ibm.ws.webcontainer.channel.WCChannelLink.finishBufferAsynch(WCChannelLink.java:760)
       
and

com.ibm.ws.webcontainer.channel.WCChannelLink finishBufferAsynch SRVE8104E: Internal Server Error. Exception Message: [{0}]
                                 com.ibm.wsspi.genericbnf.exception.MessageSentException: Message already sent

Resolving The Problem

No workaround exists for this problem.

You can optionally install a fix pack for Version 9 to resolve this issue. Refer to the Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?uid=swg27004980

[{"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"--","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF012","label":"IBM i"},{"code":"PF016","label":"Linux"},{"code":"PF014","label":"iOS"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"},{"code":"PF035","label":"z\/OS"},{"code":"PF022","label":"OS X"}],"Version":"9.0.0.0","Edition":"Base;Network Deployment","Line of Business":{"code":"LOB45","label":"Automation"}},{"Product":{"code":"SS7K4U","label":"WebSphere Application Server for z\/OS"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"Not Applicable","Platform":[{"code":"PF035","label":"z\/OS"}],"Version":"9.0.0.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
15 June 2018

UID

swg21985430

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