Re: [lwip-users] Non Blocking Socket ?

[David Haas]

That document is a bit outdated. select() is supported.

Frédéric BERNON wrote:

> Hello there,
>
> I try to use a SOCK_DGRAM socket in a non-blocking mode. I would like to have a 
> code like this :
>
> While(True)
> if (sendto( socket, ....)>=0)
> { if (recvfrom( socket...)>=0)
>    { do job
>    }
> }
>
> My problem is that the recvfrom is block the process. So, if the peer never answer (or if 
> the packet is lost), the recvfrom never returns and my process is dead. I have try 
> SO_RCVTIMEO option, but it seems it is not support by lwIP. I read in the lwIP.pdf 
> document (Adam Dunkels, Feb 20, 2001, chapiter 17) that "select" is not 
> supported.
>
> So, How can I do to do a code like this, with a timeout on recvfrom ?
>
> Note I use a lwIP 1.1.0 on a multithread OS. Perhaps a bug in our sys_arch ?
>
> Thanks
>
>
> ============================== 
> Frédéric BERNON 
> HYMATOM SA 
> Chef de projet informatique 
> Microsoft Certified Professional 
> Tél. : +33 (0)4-67-87-61-10 
> Fax. : +33 (0)4-67-70-85-44 
> Email : address@hidden 
> Web Site : http://www.hymatom.fr 
> ============================== 
>  
>
> _______________________________________________
> lwip-users mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/lwip-users