[DIRSERVER-2163] ERR_00004_PDU_BUFFER_SIZE_TOO_SMALL The PDU buffer size is too small

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 2.0.0-M20
• Component/s: ldap
• Flags: Important
• Assignee: Unassigned
• Reporter: ewelina hojdys
• Created: 12/Aug/16 07:19
• Updated: 30/Jun/19 11:57
• Resolved: 30/Jun/19 11:57

Description

I've a special case. I need to send 3 extended responses for one extedned request. I'm able to send 2 messages but when I'm sending third one I have warning:
[2016-08-11 14:45:42,990] WARN [org.apache.directory.server.ldap.LdapProtocolHandler.exceptionCaught(LdapProtocolHandler.java:237)] - Unexpected exception forcing session to close: sending disconnect notice to client.
org.apache.mina.filter.codec.ProtocolEncoderException: org.apache.directory.api.ldap.codec.api.MessageEncoderException: ERR_00004_PDU_BUFFER_SIZE_TOO_SMALL The PDU buffer size is too small !
at org.apache.mina.filter.codec.ProtocolCodecFilter.filterWrite(ProtocolCodecFilter.java:337)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:625)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1500(DefaultIoFilterChain.java:48)
at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.filterWrite(DefaultIoFilterChain.java:953)
at org.apache.mina.filter.executor.ExecutorFilter.filterWrite(ExecutorFilter.java:613)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:625)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1500(DefaultIoFilterChain.java:48)
at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.filterWrite(DefaultIoFilterChain.java:953)
at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.filterWrite(DefaultIoFilterChain.java:877)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.callPreviousFilterWrite(DefaultIoFilterChain.java:625)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireFilterWrite(DefaultIoFilterChain.java:618)
at org.apache.mina.core.session.AbstractIoSession.write(AbstractIoSession.java:502)
at org.apache.mina.core.session.AbstractIoSession.write(AbstractIoSession.java:447)
at com.ericsson.transformers.ldap_proxy_plugin.ldap.handlers.ProxyExtendedRequestHandler.remoteTransportExtended(ProxyExtendedRequestHandler.java:140)
at com.ericsson.transformers.ldap_proxy_plugin.ldap.handlers.ProxyExtendedRequestHandler.handle(ProxyExtendedRequestHandler.java:70)
at com.ericsson.transformers.ldap_proxy_plugin.ldap.handlers.ProxyExtendedRequestHandler.handle(ProxyExtendedRequestHandler.java:29)
at org.apache.directory.server.ldap.handlers.LdapRequestHandler.handleMessage(LdapRequestHandler.java:207)
at org.apache.directory.server.ldap.handlers.LdapRequestHandler.handleMessage(LdapRequestHandler.java:56)
at org.apache.mina.handler.demux.DemuxingIoHandler.messageReceived(DemuxingIoHandler.java:221)
at org.apache.directory.server.ldap.LdapProtocolHandler.messageReceived(LdapProtocolHandler.java:217)
at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:854)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:542)
at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300(DefaultIoFilterChain.java:48)
at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:943)
at org.apache.mina.core.filterchain.IoFilterEvent.fire(IoFilterEvent.java:74)
at org.apache.mina.core.session.IoEvent.run(IoEvent.java:63)
at org.apache.mina.filter.executor.UnorderedThreadPoolExecutor$Worker.runTask(UnorderedThreadPoolExecutor.java:475)
at org.apache.mina.filter.executor.UnorderedThreadPoolExecutor$Worker.run(UnorderedThreadPoolExecutor.java:429)
at java.lang.Thread.run(Thread.java:722)
Caused by: org.apache.directory.api.ldap.codec.api.MessageEncoderException: ERR_00004_PDU_BUFFER_SIZE_TOO_SMALL The PDU buffer size is too small !
at org.apache.directory.api.ldap.codec.api.LdapEncoder.encodeMessage(LdapEncoder.java:213)
at org.apache.directory.api.ldap.codec.protocol.mina.LdapProtocolEncoder.encode(LdapProtocolEncoder.java:78)
at org.apache.mina.filter.codec.ProtocolCodecFilter.filterWrite(ProtocolCodecFilter.java:306)
... 28 more

and message isn't sent. I was trying to change LdapServer PDU buffer, but it doesn't change anything. Could you suggest me any wokraround or help me fix that issue?