<br>Does anyone know what I can do to detect an unreachable UDP port?<br><br>The application uses UDP to talk to the remote system. Just a simple<br>send/receive pair. But if the 'other end's application isn't there, ie,<br>
no listener, then the remote host returns an ICMP message saying<br>the port is unreachable. Trouble is that I can't seem to see that<br>as an error response to either the send, or receive or select (looking<br>at the 'error' bit list).<br>
<br>BTW. I'm not allowed to send or receive any other messages,<br>only check the return values for the normal transactions, send(),<br>receive(), select(), or possibly check some status that might be<br>buried somewhere within the system.<br>
<br>Does anyone have any ideas?<br><br>Thanks<br>Fulko<br><br><br><br><br>