From: Joel VanderWerf <vjoel@...>
Date: 2006-06-21T04:56:20+09:00
Subject: Re: How to get the response from a UDP socket.

Francis Cianfrocca wrote:
> Joel:
> So you think that all of the OP's code is client-side code? And he's just
> using the word "server_thread" to indicate that he's looking for a response
> on that thread, not that it's on the server?

Just my guess...

> If that's true, then he can dispense with the thread, the bind and the
> connect, provided he knows how the "device" is sending a response packet to
> him. Many services that accept UDP requests will return responses to the
> same address and port that the requests came from. (This is usually an
> ephemeral port.) Some services (like NTP) send responses to a well-known
> port, to which the client must bind. Assuming the former, this code should
> work:
> 
> u = UDPSocket.new
> u.send( "UDP Message", 0, server_ip_address, server_port)
> response = u.recv(4096)

That's a good point, but the OP seemed to have a fixed port in mind that
the remote socket would reply to (port 5000). Maybe the remote process
doesn't use the sender's address. I can only guess...

-- 
      vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407