CS 351 TCP server python code assignment
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Modify the TCP server python code posted above as the following: 1- Find digits in a message received in the TCP server posted above. A TCP client must send the TCP server a message containing alpha-numeric characters (A-Z, 0-9). The server finds only numerical characters in the message and send the characters to the client. – 80 points 2- If the client sends “exit”, the connection between the client and server is terminated, and the server prints "goody bye". – 20 points Note: we using Ubuntu terminal • • To run the python programs, type "python p2_tcp_server.py" on a terminal and "python p2_tcp_client.py 0.0.0.0" on another terminal. * Please submit your p2_tcp_server.py. You do not need to modify p2_tcp_client.py * # TCP Server Python code import socket import sys # Create a TCP/IP socket sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Bind the socket to the address given on the command line server_address = ('', 10000) sock.bind(server_address) sys.stderr.write('starting up on %s port %s\n' % sock.getsockname()) sock.listen(1) while True: sys.stderr.write('waiting for a connection\n') connection, client_address = sock.accept() try: print 'client connected: address ', client_address while True: data = connection.recv(16) sys.stderr.write('received "%s"\n' % data.decode()) if data: # Find digits in data connection.sendall(data) else: break finally: connection.close() ______________________________________________________________________________ # TCP Client Python code import socket import sys # Create a TCP/IP socket sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Connect the socket to the port on the server given by the caller server_address = (sys.argv[1], 10000) sys.stderr.write('connecting to %s port %s\n' % server_address) sock.connect(server_address) while True: try: message = sys.stdin.readline().replace('\n','') sys.stderr.write('sending %s\n' % message) sock.sendall(message.encode()) if message.lower() == 'exit': sock.close() break #amount_received = 0 #amount_expected = len(message) #while amount_received < amount_expected: data = sock.recv(16) amount_received = len(data.decode()) sys.stderr.write('received "%s"\n' % data.decode()) except: sock.close() break ...
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