Networking reliability

[simplsol at aol.com]

Thierry,
You did not mention which computer you were using for a server. 
PowerMac G4 Towers have a tendency to drop network connections if they 
have mismatched memory.
Paul Looney

-----Original Message-----
From: thierry <douez at wanadoo.fr>
To: Scott Slaugh <xslaugh at gmail.com>; How to use Revolution 
<use-revolution at lists.runrev.com>
Sent: Thu, 12 May 2005 11:25:55 +0200
Subject: Re: Networking reliability

   Hi Scott,

SS> Another issue that seems to pop up occasionally is some network 
reliability
SS> issues. I am using the following script to create a request 
command. In the
SS> requesting computer I put this:

SS> [.....]

SS> Most of the time the requests make it back and forth without a 
problem.
SS> However, occasionally the requesting computer will just time out 
without
SS> having received a reply. The infuriating thing is that it will do 
this
SS> several times in a row. But as soon as I run the debugger to try 
and figure
SS> out what is going on, it works fine. Incidentally, I use " [EOT]" 
as an end
SS> of transmission string since I sometimes transmit binary data, and 
seemed to
SS> run into problems if I used just a single ASCII character. Have any 
of you
SS> been able to reliably use Revolution as a networked app? Any ideas 
what
SS> might cause these sporadic outages? Is there something I should do 
to
SS> improve my script? Thanks!


First, i've made a project which is working everyday since few months ,
and my customers seem to enjoy it. This project is based on a strong
socket commnication between a Rev specific IDE and a PerlScript 
application.
The comm is bi-directional and is heavily used in both side.
It works on PCs, and : So far, so good.

I could suggest humbly to check all the possible errors from every 
commands
and functions related to sockets. And probably, avoiding to close the 
socket
just  after  having  send  some  datas,  or could the client, after
receiving his datas send a message asking the server side to close ?

This reminds me an old story : like you put "[EOT]" as a marker, i did 
the
same but put a Return char ( cr ) at the end of my marker, and this 
resolved
one problem i had, but i don't remember exactly which one :-(  IT could 
be
that it was a specific Perl problem, but i would not bet on this one...

Hope this help

Best regards, thierry


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