Python tcp socket programming details

Learn the scripting language Python and test the available tcp communication programs:

Server:

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import socket
import threading
import time

def tcplink(sock, addr):
  print('Accept new connection from %s:%s...' % addr);
  sock.send(b'Welcome!!!');
  while True:
    data = sock.recv(1024);
    time.sleep(1);
    if not data or data.decode('utf-8') == 'exit':
       break;
    sock.send(b'Hello, %s!' % data);
  sock.close();
  print('Connection from %s:%s closed.' % addr);


if __name__ == "__main__":

  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM);

  s.bind(('127.0.0.1', 9090));
  s.listen(8); # Listening to the 8 Client;
  print('waiting for connection...');

  while True:
    sock, addr = s.accept();
    t = threading.Thread(target=tcplink, args=(sock,addr));
    t.start();

Client:

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM);
s.connect(('127.0.0.1', 9090));
print(s.recv(1024).decode('utf-8'));
for data in [b'lk', b'aa', b'bb']:
  s.send(data);
  print(s.recv(1024).decode('utf-8'));
s.send(b'exit');
s.close();

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