Any program which uses this feature, and which is compiled against libzmq3, will break after the upgrade to v4.
-- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
There are other incompatibilities between ZMQ 3 and 4 as well. The
event messages sent as a result of creating a socket monitor with
zmq_socket_monitor() have a completely different format in the two
versions, and have to be treated differently in code. (In ZMQ 3 the
message consists of one frame that contains all the information, whereas
in ZMQ 4 it is split into two frames – one for the event ID and payload
value, and one for the endpoint address.)
