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All,
I recently had the displeasure of tracking-down a mismatched AJP "max
packet size" on a service. The symptom was that when a large POST
request came in ( > 8192 bytes ), Tomcat would log two errors in quick
succession:
1. org.apache.catalina.connector.ClientAbortException:
java.io.IOException: Invalid message received with length [-1]
at
org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java
:348)
at
org.apache.catalina.connector.InputBuffer.checkByteBufferEof(InputBuffer
.java:663)
at
org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:370)
at
org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.j
ava:183)
and then immediately:
2. java.lang.IllegalArgumentException: Header message of length
[8,194] received but the packetSize is only [8,192]
at
org.apache.coyote.ajp.AjpProcessor.readMessage(AjpProcessor.java:685)
at
org.apache.coyote.ajp.AjpProcessor.receive(AjpProcessor.java:626)
at
org.apache.coyote.ajp.AjpProcessor.refillReadBuffer(AjpProcessor.java:73
4)
at
org.apache.coyote.ajp.AjpProcessor$SocketInputBuffer.doRead(AjpProcessor
.java:1456)
at org.apache.coyote.Request.doRead(Request.java:581)
at
org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java
:344)
at
org.apache.catalina.connector.InputBuffer.checkByteBufferEof(InputBuffer
.java:663)
at
org.apache.catalina.connector.InputBuffer.readByte(InputBuffer.java:358)
at
org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.j
ava:93)
It's strange to see the "invalid length" message at all IMO; I would
have expected only to see the "message is too big" error.
Is it possible to kind of merge these two errors together?
When this happens, what happens to the AJP connection? Assuming there
is a very large request coming-in and it takes e.g. 3 chunks of 64k
followed by a smaller chunk, will Tomcat throw an error for each of
the chunks, or will the connection be dropped and the request fail?
I'm actually having trouble reproducing this right now or I would have
simply tried it myself.
Thanks!
- -chris
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