import socket
import sys
import argparse

host = '192.168.43.252'
data_payload = 2048

def echo_server(port):
        """ A simple echo server """
        # Create a TCP socket
        sock = socket.socket(socket.AF_INET,
                          socket.SOCK_DGRAM)
        # 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)
        while True:
        	print ("Waiting to receive message from client")
        	data, address = sock.recvfrom(data_payload)
        	print ("received %s bytes from %s" % (len(data), address))
        	print ("Data: %s" %data)
        	if data:
            		sent = sock.sendto(data, address)
            		print ("sent %s bytes back to %s" % (sent, address))
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)