pyzmq - SNDTIMEO behavior

import zmq

context = zmq.Context()

sa = context.socket(zmq.ROUTER)
sa.setsockopt(zmq.IDENTITY, b"A")
sa.setsockopt(zmq.SNDTIMEO, 0)
sa.bind("tcp://127.0.0.1:43292")

sa.send_multipart([b"NON-EXISTENT", b"Message"], flags=zmq.NOBLOCK)
# Shouldn't this raise an zmq.EAGAIN exception?