Problem with a UDP server implements

[tao jiang]

Bernd:

Thanks again.


2011/10/19 Bernd Petrovitsch <bernd at petrovitsch.priv.at>:
> Hi!
>
> On Die, 2011-10-18 at 22:48 +0800, tao jiang wrote:
> [...]
>> Thanks for your guide.
>> But there is still a question
>> if recvfrom() used, how to figure out the client's dest ip for reply ?
>> i.e. on which ip the server receieved the request
>> when construct the IP header, i don't know which saddr to fill in
>
> Ooops, forgot that we need the destination address of the received
> packet too to construct the answer for it.
> Then yes, it seems that you would need the raw packet on the receiving
> side too.
>
> [ Full quote deelted ]
>
>        Bernd
> --
> Bernd Petrovitsch                  Email : bernd at petrovitsch.priv.at
>                     LUGA : http://www.luga.at
>
>