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- #!/usr/bin/env python
- import socket
- import sys
- import argparse
- host = 'localhost'
- data_payload = 2048
- backlog = 5
- def echo_server (port):
- """ A simple echo server """
- # Create a TCP socket
- sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
- # Enable reuse address/port
- sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
- # Bind the socket to the port
- server_address = (host, port)
- print "Starting up echo server on %s port %s" % server_address
- sock.bind(server_address)
- # Listen to clients, backlog argument specifies max no. of conns
- sock.listen(backlog)
- while True:
- print "Waiting to receive message from client"
- client, address = sock.accept()
- data = client.recv(data_payload)
- if data:
- print "Data: %s" %data
- client.send(data)
- print "sent %s bytes back to %s" % (data, address)
- # end connection
- client.close()
- if __name__ == '__main__':
- parser = argparse.ArgumentParser(description='Socket Server Example')
- parser.add_argument('--port', action="store", dest="port", type=int, required=True)
- given_args = parser.parse_args()
- port = given_args.port
- echo_server(port)
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