Failed to get a socket for multicast

[oloftangrot]

I get a 0 as result when I try to call a udpmulticast. I started from the udp sender/listner example but the code fails already in the init method. Is there a working example sketch of how to use multicast?

[sstaub]

Sorry I know about the problem, but I didn't find a solution. Please use the original Ethernet library for using multicast.

[oloftangrot]

How do I find the original library?

[sstaub]

https://github.com/arduino-libraries/Ethernet

[oloftangrot]

I had got the impression that your fork was the only one that supported mulitcast. I seems like the Arduino reference is not up to date on this point. Anyway I tried to rebuild with the default Ethenet library and it works. I can see the IGMP registering using Wireshark and my recipient program gets data from an UNO module.

Thanks!