Broadcasting UDP datagrams

[Guest]

Hello,

I am writing a WinForm application that will broadcast a UDP datagram to
multiple of embedded controllers. The controllers in return will send a
response to the WinForm application.

When I create the WinForm socket and assign the remote IP to the broadcast
IP ( “192.168.1.255†or “255.255.255.255†or “0.0.0.0â€) and send the
broadcast datagram I find out that the embedded controllers receive the
datagram and response to the IP address that it came from (in my case
“192.168.1.100â€). However the WinForm application does not receive (or
ignore it since the socket is open for the broadcast IP!?) the response from
the embedded controllers.

Any idea how can I solve that problem?

Thanks
EitanB

 

[Peter Duniho]

[...] the embedded controllers receive the
datagram and response to the IP address that it came from (in my case
“192.168.1.100”). However the WinForm application does not receive (or
ignore it since the socket is open for the broadcast IP!?) the response from
the embedded controllers.

Any idea how can I solve that problem?

Use a different socket, not configured for broadcasting, to receive the
responses.

Pete