networking - Python localhost server/client network code to add/subtract/multiply/divide two numbers? -


i've been reading "foundations of python network programming" interested in computer networks , practice made code based off of first few sample programs saw in book.. in case "wrote" tcp server binds localhost , random port , client connects localhost. client gives server string consisting of 2 numbers , operation separated spaces (i.e. '5 x 4') , server evaluates , returns appropriate value.. code follows:

#!/usr/bin/env python  import socket, sys s = socket.socket(socket.af_inet, socket.sock_stream)  host = '127.0.0.1' port = 1060  if sys.argv[1] == 'server':     s.setsockopt(socket.sol_socket, socket.so_reuseaddr, 1)     s.bind((host, port))     s.listen(1)     while true:     print 'now listening at: ', s.getsockname()     sc, sockname = s.accept()     print 'we have accepted connection from', sockname     print sc.getsockname(), 'is connected to', sc.getpeername()     message = sc.recv(1024)     print 'the client wants perform operation: ' + message     message = message.split()         if message[1] == '+':             result = float(message[0]) + float(message[2])         elif message[1] == '-':             result = float(message[0]) - float(message[2])         elif message[1] == '*':             result = round(float(message[0]) * float(message[2]), 3)         elif message [1] == '/':             result = round(float(message[0]) / float(message[2]), 3)     sc.sendall('the result ' + str(result))     sc.close()     print 'reply sent ' + str(result) + '.'     print  elif len(sys.argv) == 5 , sys.argv[1] == 'client':     s.connect((host, port))     print 'you connected to: ', s.getsockname()     s.sendall(sys.argv[2] + ' ' + sys.argv[3] + ' ' + sys.argv[4])     reply = s.recv(1024)     print 'the return value is', repr(reply)     s.close()  else:     print >>sys.stderr, 'usage: addstream.py server or addstream.py client num1 +/-/*// num2'

my question is: best way or there better way?

thanks!

twisted best network engine on offer anywhere. handle want in nice , friendly chunk of code both cpu , io friendly machine. http://twistedmatrix.com/trac/


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