LinuxQuestions.org - multicasting problem

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multicasting problem

I'm trying to create an app which instances itself and where each instance needs to register its existance with the others. I had assumed that multicast was the way, but I've had a lot of problems, particularly it seems i can't have two or more concurrent listeners on the same mcast-address and port number (the second bind fails). Is that a valid situation, or must I have done something wrong? And if it is valid that there may not exist multiple concurrent listeners on the same mcast-address/port, then how do my instances communicate?

Quote:

Originally Posted by softwizz (Post 3454743)

And if it is valid that there may not exist multiple concurrent listeners on the same mcast-address/port, then how do my instances communicate?

Are you using "setsockopt(SO_REUSEADDR)"?

multicast problem

No, I'd not seen that one mentioned where I got my original steer from. I'll try it - ta!