[DIRMINA-679] NullPointerException in ProtocolCodecFilter.filterWrite

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-M4
• Fix Version/s: 2.0.0
• Assignee: Unassigned
• Reporter: John J. Franey
• Created: 19/Mar/09 19:23
• Updated: 27/Feb/10 12:40
• Resolved: 13/Jan/10 01:22

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)
....

Issue Links

• is cloned by: DIRMINA-684 NullPointerException when opening socket to localhost