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Altera_Forum's avatar
Altera_Forum
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15 years ago

How to recieve UDP messages with SimpleSocketServer Example

Hello I have a problem where I’d like to send a UDP broadcast message out to find any devices I have on my network and have those devices then respond with their IP addresses and some other co...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

What you're really asking is a question about socket programming. Specifically, line 417 of "simple_socket_server.c" reads: 

 if ((fd_listen = socket(AF_INET, SOCK_STREAM, 0)) < 0)

This is where the socket is actually created. To change the socket to UDP, change the line to read: 

 if ((fd_listen = socket(AF_INET, SOCK_DGRAM, 0)) < 0)

You should refer to the NicheStack reference material:

http://www.altera.com/literature/ug/nichestackref.zip

Jake