UDP question

John Craig jc at spl21.net
Fri Nov 10 13:06:05 EST 2006

I also had a look at Alex Tweedly's UDP examples when I started looking 
at networking with Rev. - saved a lot of time.
I've also got two very minimal test stacks on user space Jock_McTartan - 
about 10 lines of code each - client and server.
They have just enough in them to show the mechanism working.

Hope this helps.


Andre Garzia wrote:
> Folks,
> I have two stacks, one is a udp server stack and the other is a client 
> stack. The server is setup to use the newPacket callback message when 
> a datagram arrives. The client will write to the server then it will 
> read from the socket to see if there was any answer.
> The client is able to write to the server fine, the datagrams arrive 
> nicelly. The server is not able to answer back, no error is reported 
> by the write to socket message but nothing is returned to the server, 
> the read from socket message after the write to socket on the client 
> returns empty. I've sent more than 1k packets, they could not be all 
> droped since on one way it all works fine but on the other way they 
> simply don't work.
> Am I doing something really stupid?
> My packet size is 576 chars, I've also used 8k and 2k sizes, the 
> client is able to send those fine and they arrive intact, but from 
> server to the client I can't seem able to communicate.
> thanks in advance, udp is kinda new to me.
> andre
> PS: Mac OS X here, rev 2.7.5.
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