Hello World Web Server

server.py

#!/usr/bin/env python
import socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(('localhost', 80))
sock.listen(5)
while True:
    connection, address = sock.accept()
    buf = connection.recv(1024)
    httpString = b"""\
HTTP/1.1 200 OK\r
\r
<h1> hello </h1>\r
"""
    connection.send(httpString)  
    connection.close()