ZeroMQ 'Restart' if no reply was recieved

I have a python program which sends height data from my client to my server program. My server program will not be always running so if I don't recieve a response I would like it to try again.

So far what I have is that if a response (from the server) is not given in 20 Seconds it causes an exception and recalls my input. It works fine until I try it a second time.

Here is my code:

import zmqfrom time import sleepglobal radiuscontext = zmq.Context()print("Remote Deployment Application")print("Lightweight ZMQ Communication")print("Connecting to Desk Ctrl Service")socket = context.socket(zmq.REQ)socket.connect("tcp://192.168.1.9:5555")socket.setsockopt(zmq.RCVTIMEO, 30000)socket.setsockopt(zmq.LINGER, 0) #  Do 10 requests,waiting each time for a responsedef __init__(self, height):        self.height = heightdef start():    global height    height = input("Enter in request: ")    SendHeightVal()def SendHeightVal():    global userinput    global height    print("Sent Request. Awaiting Reply.")    so_bytes = height.encode()    socket.send(so_bytes)    so_bytes = 0    try:       message = socket.recv()    except:        print("Something went wrong. No response from server!")        message = None               start()        print(message)    start()

Here is the error:

During handling of the above exception, another exception occurred:Traceback (most recent call last):  File "client.py", line 44, in <module>    start()  File "client.py", line 22, in start    SendHeightVal()  File "client.py", line 37, in SendHeightVal    start()  File "client.py", line 22, in start    SendHeightVal()  File "client.py", line 30, in SendHeightVal    socket.send(so_bytes)  File "/usr/local/lib/python3.6/site-packages/zmq/sugar/socket.py", line 391, in send    return super(Socket, self).send(data, flags=flags, copy=copy, track=track)  File "zmq/backend/cython/socket.pyx", line 727, in zmq.backend.cython.socket.Socket.send  File "zmq/backend/cython/socket.pyx", line 774, in zmq.backend.cython.socket.Socket.send  File "zmq/backend/cython/socket.pyx", line 249, in zmq.backend.cython.socket._send_copy  File "zmq/backend/cython/socket.pyx", line 244, in zmq.backend.cython.socket._send_copy  File "zmq/backend/cython/checkrc.pxd", line 25, in zmq.backend.cython.checkrc._check_rczmq.error.ZMQError: Operation cannot be accomplished in current state