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[ts-7000] Re: Rebind after process crash -- quasi-n00b sockets issue

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Subject: [ts-7000] Re: Rebind after process crash -- quasi-n00b sockets issue
From: "naturalwatt" <>
Date: Tue, 13 May 2008 08:53:46 -0000
--- In  "Fred" <> wrote:
I have the same problem.  The kernel seems to hold the socket in use for just 
about 60 
seconds.  My process attempts to bind every 10 seconds until it succeeds.

On Solaris there is a timeout you can alter, but I can't remember its name.

>
> Greetings, mailing list!
> 
> Running TS-Linux on the Ts-7250, I get a problem that I've not 
> encountered on any other socket-based platform, a problem with the 
> bind() call after my process crashes and then gets re-launched.
> 
> When my process launches, I call bind() to a port number and 
> everything runs perfectly.  If for any reason my process crashes, a 
> process monitoring process that I also have running notices that my 
> process has crashed and it will re-launch my dead process.
> 
> The bind() call, however, fails the second time my process is 
> launched, probably because the port number is still marked as in use 
> in the TCP/IP stack, and won't get released until the stack performs 
> clean-up the next time it's scheduled.
> 
> I've not had this problem under Trumpet Winsock under Windows 3.11 
> (which, bless me, I'm still using at home because I run Ham Radio 
> TNCs and old stuff, some of it under CP/M.)
> 
> Isn't sockopt with option REUSE supposed to allow me to rebind the 
> same port number?
> 
> Any way, I greatly appreciate any help anyone can offer.  Maybe 
> there's a socket call I'm unaware of that will force an existing 
> binding on a dead process' port number to be relinquished, maybe.
> 
> Thanks!
>




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