Hi All, During the ZeroMQ hackathon I have added the Radio/Dish pattern (thread safe version of pubsub) and multicast support (only for Radio/Dish sockets) to both libzmq and czmq.
Radio/Dish is very similar to pub/sub with some differences: - Thread safe, you can send and receive messages from multiple threads, so for publisher you now don't need internal device to publish from multiple threads and with subscriber you can use it as load balancer. - Only single frame can be sent - Radio/Dish matching is exact matching (vs prefix of pubsub) - Group (Radio/Dish topic) is string and currently limited to 15 chars (might be increased in the future) - Group is set as part of the zmq_msg (libzmq) or zframe (czmq). - You call join or leave on the socket (with methods instead of socket options) To learn how to use it with czmq take a loot at the following gist: https://gist.github.com/somdoron/9423196a228775c8f5af For libzmq take a loot at the test: https://github.com/zeromq/libzmq/blob/master/tests/test_radio_dish.cpp#L90 And the most exciting news, with radio-dish you can use multicast transport, just replace the address from following gist with udp transport and multicast address, following is a valid address for example: udp://239.0.0.1:55555 Regards Doron
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