212-socket

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18

import socket

server_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_sock.bind(('', 5000))
server_sock.listen(10)

while True:
    cli_sock, addr = server_sock.accept()
    print 'We have opened a cli_sockection with', addr
    print cli_sock.recv(100)

    output = "<h1>Hello Client</h1>"
    cli_sock.send("HTTP/1.1 200 OK\n")
    cli_sock.send("Content length: "+str(len(output)))
    cli_sock.send("Content-Type: text/html\n\n")

    cli_sock.send(output)
    cli_sock.close()

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47

import os
import socket
import time

SERVER_ADDRESS = (HOST, PORT) = '', 8888
REQUEST_QUEUE_SIZE = 5


def handle_request(client_connection):
    request = client_connection.recv(1024)
    print(
        'Child PID: {pid}. Parent PID {ppid}'.format(
            pid=os.getpid(),
            ppid=os.getppid(),
        )
    )
    print(request.decode())
    http_response = b"""\
HTTP/1.1 200 OK

Hello, World!
"""
    client_connection.sendall(http_response)
    time.sleep(60)


def serve_forever():
    listen_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    listen_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    listen_socket.bind(SERVER_ADDRESS)
    listen_socket.listen(REQUEST_QUEUE_SIZE)
    print('Serving HTTP on port {port} ...'.format(port=PORT))
    print('Parent PID (PPID): {pid}\n'.format(pid=os.getpid()))

    while True:
        client_connection, client_address = listen_socket.accept()
        pid = os.fork()
        if pid == 0:  # child
            listen_socket.close()  # close child copy
            handle_request(client_connection)
            client_connection.close()
            os._exit(0)  # child exits here
        else:  # parent
            client_connection.close()  # close parent copy and loop over

if __name__ == '__main__':
    serve_forever()