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  1. MINA
  2. DIRMINA-679

NullPointerException in ProtocolCodecFilter.filterWrite

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.0.0-M4
    • Fix Version/s: 2.0.0
    • Component/s: None
    • Labels:
      None

      Description

      Looks like filterWrite obtains a reference from the session's attributes, but the desired attribute is not there.

      I am running max of 250 datagram sockets under load test for my application. Connections last about 60 seconds and released. A new connection is made to keep the total number of active connections up to 250.

      Over a period of two hours running this load test, this exception occured twice.

      org.apache.mina.filter.codec.ProtocolEncoderException: java.lang.NullPointerException
      at org.apache.mina.filter.codec.ProtocolCodecFilter.filterWrite(ProtocolCodecFilter.java:312)
      at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:506)
      at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$7(DefaultIoFilterChain.java:501)
      at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.filterWrite(DefaultIoFilterChain.java:814)
      at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.filterWrite(DefaultIoFilterChain.java:740)
      at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:506)
      at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireFilterWrite(DefaultIoFilterChain.java:498)
      at org.apache.mina.core.session.AbstractIoSession.write(AbstractIoSession.java:418)
      at org.apache.mina.core.session.AbstractIoSession.write(AbstractIoSession.java:359)
      ....
      Caused by: java.lang.NullPointerException
      at org.apache.mina.filter.codec.ProtocolCodecFilter.filterWrite(ProtocolCodecFilter.java:297)
      at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.filterWrite(DefaultIoFilterChain.java:814)
      at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.filterWrite(DefaultIoFilterChain.java:741)
      at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireFilterWrite(DefaultIoFilterChain.java:498)
      at org.apache.mina.core.session.AbstractIoSession.write(AbstractIoSession.java:359)
      ....

        Attachments

        1. FilterReplaceFix.diff
          2 kB
          Franz Seidl

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              • Assignee:
                Unassigned
                Reporter:
                jjfraney@gmail.com John J. Franey
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                • Created:
                  Updated:
                  Resolved: