HTTP 1.1 server and jmeter (running on jdk 1.3.1)

[Koen Janssens <ko...@alcatel.be>]

Hello,

I am stress testing a java application server (silverstream) using
jmeter. When i start a few threads in jmeter that each do some
operations, i sometimes get unexpected 403 (time out) exceptions. At
first i thought it was due to the load on the application server, but
after some investigation it appeared that the jmeter received these
timeouts even if the server was totally unloaded.

So i did some more investigation and by increasing the server debug
level i could see that if i did a post request to the server, he whould
always return a 100 Continue message to the client. This appears to be
normal HTTP  1.1 behavior. But these messages are apparantly  not always
handled well by jmeter, since the TCP connection seems to block
(sometimes) after the server sends the contimue message.  When the
server operation times out, i get the 403 message in jmeter.

I suspect this problem has something to do with the HttpURLConnection
from sun. Although it claims to be HTTP 1.1 compliant, i don't think it
is.
Does anybody know some more about this ( in other words: is somebody out
these successfully stess testing an HTTP 1.1 server using jmeter ?)

After browsing a while i found out that i am not the only one having
this problem.
(http://forum.java.sun.com/thread.jsp?forum=11&thread=16646)

Thanks,

Koen




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