JBOSS: TCP connect failed in tcp

JBOSS: TCP connect failed in tcp_connect()

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Pawan - 07 Jun 2004 11:45 GMT

hi,

I am using JBOSS3.2 as an application server. A C++ client spawns 50
threads and each thread make a SOAP request to the a webservice
deployed on JBOSS. At the client side I see many random errors i.e
sometime these disappear, the other time these come...The errors look
like:-

SOAP FAULT: SOAP-ENV:Client
"Unknown error"
Detail: TCP connect failed in tcp_connect()

Please throw some light on the possible cause and the solution.

Thanks,
Pawan

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Michael Amling - 07 Jun 2004 15:06 GMT

> hi,
>
[quoted text clipped - 9 lines]
>
> Please throw some light on the possible cause and the solution.

TCP Server Socket implementations typically have a queue of incoming
connections that the server hasn't yet accepted. Any connections coming
in when that queue is full get rejected by the operating system. The
default queue length is 50 (see 'backlog' in
"http://java.sun.com/j2se/1.3/docs/api/java/net/ServerSocket.html"). So,
if the server socket in question had a queue length shorter than the
default or there were any other connections to it, some could easily get
rejected.

--Mike Amling

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Pawan - 08 Jun 2004 05:26 GMT

Thanx Michael ,

When I run the same application on IBM Websphere then there is no such
error even with 200 threads making frequent requests. why this papens
with JBOSS only. Is there any setting in JBOSS to increase the queue
length. If yes then where and how?

regards,
Pawan

> > hi,
> >
[quoted text clipped - 20 lines]
>
> --Mike Amling

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JBOSS: TCP connect failed in tcp_connect()

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