Python TCP Client Server Example

Python TCP Client Example.py

import socket

hostname, sld, tld, port = 'www', 'integralist', 'co.uk', 80
target = '{}.{}.{}'.format(hostname, sld, tld)

# create an ipv4 (AF_INET) socket object using the tcp protocol (SOCK_STREAM)
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# connect the client
# client.connect((target, port))
client.connect(('0.0.0.0', 9999))

# send some data (in this case a HTTP GET request)
client.send('GET /index.html HTTP/1.1\r\nHost: {}.{}\r\n\r\n'.format(sld, tld))

# receive the response data (4096 is recommended buffer size)
response = client.recv(4096)

print response

Python TCP Server Example.py

import socket
import threading

bind_ip = '0.0.0.0'
bind_port = 9999

server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind((bind_ip, bind_port))
server.listen(5)  # max backlog of connections

print 'Listening on {}:{}'.format(bind_ip, bind_port)


def handle_client_connection(client_socket):
    request = client_socket.recv(1024)
    print 'Received {}'.format(request)
    client_socket.send('ACK!')
    client_socket.close()

while True:
    client_sock, address = server.accept()
    print 'Accepted connection from {}:{}'.format(address[0], address[1])
    client_handler = threading.Thread(
        target=handle_client_connection,
        args=(client_sock,)  # without comma you'd get a... TypeError: handle_client_connection() argument after * must be a sequence, not _socketobject
    )
    client_handler.start()

Please explain me the client.send('GET /index.html HTTP/1.1\r\nHost: {}.{}\r\n\r\n'.format(sld, tld)) line in first code.
Thanks bro for this code. It will help me.

Please explain me the client.send('GET /index.html HTTP/1.1\r\nHost: {}.{}\r\n\r\n'.format(sld, tld)) line in first code.
@saif017

This is an example of HTTP requests. The string will be processed to become:
GET /index.html HTTP/1.1
HOST: integralist.co.uk

This is a simplified way of requesting the page index.html from integralist.co.uk, using the http 1.1 protocol.
Check this out for more examples.

Bro what can we do after the connection was success?

def handle_client_connection(client_socket)
how to close this function
would you mind explain it

can anybody please explain what is going on this line of code? : " client_sock, address = server.accept() "
How the server accepting both the variables client and socket?

The socket will start listening on the port for incoming tcp connection requests, server.accept() will finish executing once it establishes a new connection with a client

how server computer get the message in cmd when client send the text to server computer

i have client computer and server computer which are connected with LAN cable. client computer has client.py file and server computer has server.py file when i am running the files in both computer then my client computer sending the text message to server computer that is good. But i want that when i run the client program the server computer get the text message in a pop box or in cmd (means i dont want to run separately server.py file in server computer it will automaitcally run when i run the client.py file) how i can do this.