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From: Ben Clewett <B.Clewett@roadrunner.uk.com>
To: lartc@vger.kernel.org
Subject: [LARTC] Detecting stale TCP/IP
Date: Tue, 29 Jul 2003 08:56:24 +0000	[thread overview]
Message-ID: <marc-lartc-105946877025796@msgid-missing> (raw)

Dear lartc,

I have a TCP/IP server connecting to a GPRS PDA.

Unfortuntatelly GPRS seems unstable, and for this reason or another, a 
interupt to the TCP/IP connection (like switching the clinet off 
suddenly) does not terminate the TCP/IP connection.  It can still be 
seen in 'netstat', and a test by the application shows it present.  It 
may time out after about 40 minutes.

My real problem is a call to 'write' in non-blocking mode returns 
success when the other end of the TCP/IP connection is not there.

Does any member know a reference to where I can test for the reply 
TCP/IP 'ACK' packet for this write call, and therefore timeout and 
terminate the connection?

Thanks in advance,

Ben Clewett.

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             reply	other threads:[~2003-07-29  8:56 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-29  8:56 Ben Clewett [this message]
2003-07-29 10:24 ` [LARTC] Detecting stale TCP/IP Jasper Spaans
2003-07-29 14:55 ` Ben Clewett

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