Re: Port Unreachable

I'm confused. There is no "connection" with UDP. Are you sure you're using UDP?
I use the following to open a UDP socket:
 
 udp_extopen( &udpcon[i].socket, IF_DEFAULT, UDP_BROADCAST_PORT, -1, -1, NULL, 0, 0); 
 
 
Also, make sure you are not using the same port number for both TCP and UDP.
 
Steve
 
 



On Wednesday, October 16, 2013 7:55 AM, ct3lions2000 <[email protected]> wrote:
  
  
>Hi Guys
>
>I have a simple UDP communications set up where I open up a UDP Port on the RCM6710 using:
>
>udp_open(&sock, LOCAL_PORT, REMOTE_IP,0, NULL)
>
>I specify an IP Address and port to listen too. I then call TCP_TICK regularly and it works great communicating with a Visual Basic programming running on my PC.  The problem comes when I halt the VB program and restart it. When I restart the VB program and try to send data to the Rabbit I get no reply from the rabbit (rabbit never receives the packet) and using a packet sniffer I see that I get an error packet saying the "Port is unreachable". The only way to correct this is to close the and reopen the socket on the rabbit. 
>
>I have checked the return values on TCP_TICK and ifstatus and they are both nonzero indicating that as far as the rabbit is concerned the connection is still good.
>
>Is there a way I can check on the rabbit that everything is OK and reset it if it is not?
>
>Thanks
>
>  
> 
>
>