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()

#!/usr/bin/env python3
# https://gist.github.com/ctrngk/0f9dae1010cf689f92d2b4658031d3e5
# similar to
# curl ifconfig.co/json
import socket

method = 'GET'
port = 80
target = 'ifconfig.co'
path = '/json'
# target, path = 'api.ipify.org', '/'
# target, path = 'ipecho.net', '/plain'
address = (target, port)

# 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(address)

# send some data (in this case a HTTP GET request)
client.send(f'{method} {path} HTTP/1.1\r\nHost: {target}\r\n\r\n'.encode())

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