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UDP Sockets

 
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SeeCwriter



Joined: 18 Nov 2013
Posts: 159

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UDP Sockets
PostPosted: Thu Mar 13, 2014 11:07 am     Reply with quote
I want to open a UDP socket to listen for UDP Broadcast datagrams.
I'm looking at the description of function UDPOpenEx() in UDP.c as well as Ethernet example program ex12.c.

UDPOpenEx() takes 4-arguments, but the example program only provides 3. And it's not clear which 3. From ex12.c:
Code:
socket[i]=UDPOpen(UDP_SOURCE_PORT,NULL,INVALID_UDP_SOCKET);

I have a specific port number I want listen on. Other than that, all other parameters are unknown. I need to accept a broadcast datagram from any client.

I'm looking for suggestions on what arguments to use to open the socket.
fr3nsis



Joined: 13 May 2013
Posts: 10

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PostPosted: Thu Mar 13, 2014 11:34 am     Reply with quote
this works
Code:
UDPOpen(0, NULL,UDP_SOURCE_PORT);
SeeCwriter



Joined: 18 Nov 2013
Posts: 159

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PostPosted: Thu Mar 13, 2014 2:36 pm     Reply with quote
The following seems more correct to me. I want to listen for broadcasts on a specific port, and I don't care what port the client uses. Does this seem correct?
Code:
my_socket = udp_extopen( UDP_BROADCAST_PORT, NULL, 0 );
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