Why python raised an AssertionError on some failed assumption in a ZeroMQ client?

问题

My ZeroMQ server _{( not published here, written in java )} is set to run only after triggering an event and the ZeroMQ client _{( written in python )} is continuously running in background, waiting for server.

For a considerable time period the python client keeps on running properly and then crashes with this error:

Assertion failed: Connection reset by peer (bundled\zeromq\src\signaler.cpp:298)

It happens when the server is not started for a larger time interval.

The client ( python ) app is in the following form

import zmq

context = zmq.Context()
socket  = context.socket( zmq.REQ )

socket.connect( "tcp://localhost:5555" )

socket.send( b"ReadySIG_From_Python_Emitted" )
message = socket.recv()
print( "OrderDetails %s" % ( message ) )

socket.send( b"TERMINATE" )
exit()

来源：https://stackoverflow.com/questions/37962472/why-python-raised-an-assertionerror-on-some-failed-assumption-in-a-zeromq-client