Created
July 5, 2013 17:41
-
-
Save kollad/5936076 to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import collections | |
| import hashlib | |
| import logging | |
| import pickle | |
| import random | |
| import socket | |
| import struct | |
| log = logging.getLogger(__name__) | |
| class Client(object): | |
| def __init__(self, host='0.0.0.0', port=7777): | |
| self.host = host | |
| self.port = port | |
| self._socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) | |
| self._socket.connect((self.host, self.port)) | |
| def send(self, obj): | |
| obj = self.pack(obj) | |
| self._socket.sendall(obj) | |
| data = self._socket.recv(1024) | |
| print('Received: {}'.format(repr(data))) | |
| def to_bytes(self, s, encoding='utf-8'): | |
| return bytes(s, encoding) | |
| def calculate_checksum(self, obj): | |
| return hashlib.md5(pickle.dumps(obj)).hexdigest() | |
| def pack(self, obj): | |
| checksum = self.to_bytes(self.calculate_checksum(obj)) | |
| action = self.to_bytes(obj['action']) | |
| value = obj['value'] | |
| packed = struct.pack( | |
| '!I{}sh{}s'.format(len(action), len(checksum)), | |
| len(action), | |
| action, | |
| value, | |
| checksum | |
| ) | |
| return packed | |
| def close(self): | |
| self._socket.close() | |
| if __name__ == '__main__': | |
| cl = Client() | |
| cl.send({'action': 'set_level', 'value': random.choice(range(10))}) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment