A simple python tcp server which writes json data to file

json_collector.py

import socket
import json

HOST = ""
PORT = 8888

def send_response(msg, code, code_msg, conn):
    http_response = ("HTTP/1.1 {code} {code_msg}\n\n{msg}"
                     "".format(code=code, code_msg=code_msg, msg=msg))
    client_connection.sendall(http_response)
    client_connection.close()


if __name__ == "__main__":
    listen_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    listen_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
    listen_socket.bind((HOST, PORT))
    listen_socket.listen(1)
    print "Running on port {}".format(PORT)

    while True:
        client_connection, client_address = listen_socket.accept()
        request = client_connection.recv(1024)
        print request
        separator = '\r\n\r\n' # This is probably standard enough...?
        if separator in request:
            raw_data = request.split(separator)[1] # janky parsing
            try:
                json.loads(raw_data) # validate json data
            except ValueError:
                send_response("Go away", 400, "INVALID", client_connection)
            else:
                with open('output.txt', 'a') as f:
                    f.write('\n'+raw_data)
                send_response("Success.", 200, "OK", client_connection)
        else:
            send_response("Go away", 400, "INVALID", client_connection)