Re: UDP sendto problem

Hi Robert, 

Thanks. The problem is now solved. The 'sendto' was not working because the 'sockaddr' structure was not initialized to zero, before setting the 'sin_addr' field in it.

Thanks and regards.

-abhijit

On 30 Mar 2004 16:45:06 -0600
Robert Muchsel <robert.muchsel-6tN4nzCoH/[email protected]> wrote:

> You might be out of kernel memory (try pinging your device. If only
> small ping sizes work, then kernel memory is your problem.)
> 
> Use the latest version of xnetstack and - if you have a UDP socket bound
> to a port - make sure you keep calling recvfrom() on the socket,
> otherwise the unprocessed packet queue will consume a considerable
> amount of memory.
> 
> 
> 
> 
> On Tue, 2004-03-30 at 00:34, Zainul M Charbiwala wrote:
> > Hi all, 
> > 
> > We are using the C sockets library for a UDP application. We are facing
> > problems while performing a 'sendto' on a UDP socket. The packets sent by
> > the UDP application seem somehow to get blackholed inside tini itself.
> > 
> > TINI does not send an ARP request before attempting to send the UDP
> > datagrams. If we ping the TINI from the server machine, and then attempt
> > the sendto (to update the ARP cache, coz we figure this problem is related
> > to ARP), it still does not work. The result returned by the sendto is 0.
> > 
> > However, on another UDP socket, when we first do a 'recvfrom', we are able
> > to receive packets and then subsequent packets sent with 'sendto' also work
> > fine.
> > 
> > Has anyone faced this problem before? Is there any solution for this?
> > 
> >  Thanks and regards,
> > 
> > Abhijit.
> -- 
>   Robert Muchsel - Dallas Semiconductor - http://www.maxim-ic.com/TINI/


-- 
Surprises are highly over-rated.
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