tomcat log:
2012-06-20 15:37:00,744 INFO [org.apache.mina.filter.logging.LoggingFilter] - <RECEIVED: HeapBuffer[pos=0 lim=180 cap=2048: 00 00 00 B0 AC ED 00 05 73 72 01 00 1D 6F 72 67...]>
2012-06-20 15:37:00,764 INFO [org.apache.mina.filter.logging.LoggingFilter] - <SENT: HeapBuffer[pos=0 lim=0 cap=0: empty]>
2012-06-20 15:37:00,767 INFO [org.apache.mina.filter.logging.LoggingFilter] - <RECEIVED: HeapBuffer[pos=0 lim=273 cap=2048: 00 00 01 0D AC ED 00 05 73 72 01 00 1D 6F 72 67...]>
2012-06-20 15:37:00,781 INFO [org.apache.mina.filter.logging.LoggingFilter] - <SENT: HeapBuffer[pos=0 lim=0 cap=0: empty]>
2012-06-20 15:37:05,771 INFO [org.apache.mina.filter.logging.LoggingFilter] - <RECEIVED: HeapBuffer[pos=0 lim=470 cap=1024: 00 00 01 D2 AC ED 00 05 73 72 01 00 1D 6F 72 67...]>
2012-06-20 15:37:05,796 INFO [org.apache.mina.filter.logging.LoggingFilter] - <SENT: HeapBuffer[pos=0 lim=0 cap=0: empty]>
2012-06-20 15:37:05,806 INFO [org.apache.mina.filter.logging.LoggingFilter] - <RECEIVED: HeapBuffer[pos=0 lim=211 cap=1024: 00 00 00 CF AC ED 00 05 73 72 01 00 1D 6F 72 67...]>
2012-06-20 15:37:05,815 INFO [org.apache.mina.filter.logging.LoggingFilter] - <SENT: HeapBuffer[pos=0 lim=0 cap=0: empty]>
2012-06-20 15:37:05,823 WARN [org.apache.mina.filter.logging.LoggingFilter] - <EXCEPTION :>
org.apache.mina.filter.codec.ProtocolEncoderException: java.lang.NullPointerException