UDP question

[Jim Ault]

On 11/10/06 7:50 AM, "Andre Garzia" <soapdog at mac.com> wrote:
 
> 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.

Part of the answer may lie in your router/ip configuration, but I am sure
you are aware of sockets and connections in general.

When I went through my setup ( I use UDP every day btween apps and
computers), I used the two stacks by Alex Tweedly to test and debug all of
my apps.  

Do you have the 
UDP Echo Client and
UDP Echo server?

The idea is to run the Echo Client and Server, then reverse and make the
computers the opposite, therefore testing packets both scenarios to find the
gotchas.

If not, they are available in the User Spaces   alextweedly

I believe UDP broadcast needs to know the ip addresses of the recipients,
which is the way I set it up.

Let me know if you have any questions or need someone to help ping and debug
from here.

Jim Ault
Las Vegas

On 11/10/06 7:50 AM, "Andre Garzia" <soapdog at mac.com> 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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