I've been looking at the documentation for SocketServer
. I copied the TCP server code from the documentation and it runs fine. However, I noticed that whenever I ctrl-c'ed out of the program in my terminal, and then tried to run it again, I would get the following error:
socket.error: [Errno 98] Address already in use
I looked into how to remedy the problem by reading this and this. I added the following line to my code to try to allow reuse of the address:
server.allow_reuse_address = True
I am still experiencing the same problem even with the above line added. I also added a try
and except
around my server.serve_forever()
function, catching the KeyboardInterrupt exception and calling server.shutdown()
and server.socket.close()
in hopes that the address would be freed.
Here is the full extent of my TCP server code (Note: I excluded the MyTCPHandler class):
if __name__ == "__main__":
HOST, PORT = '', 9999
# Create the server, binding to localhost on port 9999
server = SocketServer.TCPServer((HOST, PORT), MyTCPHandler)
server.allow_reuse_address = True
# Activate the server; this will keep running until you
# interrupt the program with Ctrl-C
try:
server.serve_forever()
except KeyboardInterrupt:
server.shutdown()
server.socket.close()
I am still getting the error running the code above and have to wait close to a minute until the address is finally freed. This is frustrating when I'm debugging and changing my code constantly.
I'm running this code using Python 2.7.3 on a RaspberryPi running Raspbian "Wheezy" 7.0.
...
SocketServer.TCPServer.allow_reuse_address = True
server = SocketServer.TCPServer((HOST, PORT), MyTCPHandler)
...
allow_reuse_address
should be on the class, not on the instance.
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