RE: TCP interface problem

[Tim McCarthy <TimM@xxxxxxxxxxxxxxxxxx>]

If your sockets program is expecting to always receive complete
"records" on a read then you may be asking for trouble. There is no
guarantee that a packet sent always equals a packet received. You really
need to recode the read and treat it as a stream of data rather than a
fixed length entity - and if the records are delimited by say CR/LF's
then you need to parse it out - otherwise changes to your network
hardware/topology may eventually get you.

> -----Original Message-----
> From: Rich Duzenbury [SMTP:rduz@aros.net]
> Sent: Friday, August 06, 1999 5:09 PM
> To:   midrange-l@midrange.com
> Subject:      TCP interface problem
> 
> Hello midrangers,
> 
> I have a TCP socket interface giving me fits today.  We are trying to
> move it from a V3R2 machine to a V4R3 machine with little success.
> 
> Records longer than 536 appear to be truncated.  I notice that when I
> check the TCP connection status on the new machine (Netstat, option
> 3), it happens to report 'Maximum segment size: 536'.
> 
> The old machine reports 'Maximum segment size: 1452'.
> 
> How can I convince the new system to allow the larger segment size
> (Assuming this is the real problem).
> 
> This program does not appear to use any type of SETSOCKOPT calls, btw.
> 
> Thank you.
> 
> Regards,
> Rich
> 
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