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Description
I removed socket.connect because it's not needed for bind, as bind is used for connecting. And I added unbind for broker shutdown.
We can see it in this sources
https://github.com/zeromq/pyzmq/blob/b184fed8b6525da5d9234b470800af9a72565b1c/zmq/sugar/socket.py#L270-L289
Closing
fixes #401