Question

In this lab you will write a simple chat application in Python using TCP sockets. The chat application consists of a chat server and a chat client. At any one time, the chat server is communicating with just one chat client. When the client and the server are done chatting, they exchange end messages which ends the session. The client and server read and write Unicode strings using the readUTF() and writeUTF() methods of DataInputStream and DataOutputStream respectively. After compilation, start the Chat server and then the Chat client in two separate command windows on the localhost. Let the client and server exchange a couple of messages from their respective windows and then end the session by exchanging the end message. 4.1 Provide your server and client code as well as the message exchanges (screenshots of server and client command windows) to Blackboard.

Answer 1

1. Python Socket Server:
   import socket
   serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
   serv.bind(('0.0.0.0', 8080))
   serv.listen(5)
   while True:
   conn, addr = serv.accept()
   from1 = ''
   while True:
   data = conn.recv(4096)
   if not data: break
   from1 += data
   print (from1)
   conn.send("I am SERVER\n")
   conn.close()
   print ('client disconnected')
     

2. Python Socket Client:

   import socket
   client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
   host = ('', 6166)
   client.connect(host)
   client.send("I am CLIENT\n")
   from_server = client.recv(4096)
   client.close()
   print (from_server)

we open to command prompts one for client and another for server run at a time.