Created
January 28, 2018 05:48
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Proxy server using Python 2.7
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| #Copyright (c) <2009> <Fábio Domingues - fnds3000 in gmail.com> | |
| #Copyright (c) <2009> <Fábio Domingues - fnds3000 in gmail.com> <MIT Licence> | |
| import socket, thread, select | |
| __version__ = '0.1.0 Draft 1' | |
| BUFLEN = 8192 | |
| VERSION = 'Python Proxy/'+__version__ | |
| HTTPVER = 'HTTP/1.1' | |
| class ConnectionHandler: | |
| def __init__(self, connection, address, timeout): | |
| self.client = connection | |
| self.client_buffer = '' | |
| self.timeout = timeout | |
| self.method, self.path, self.protocol = self.get_base_header() | |
| if self.method=='CONNECT': | |
| self.method_CONNECT() | |
| elif self.method in ('OPTIONS', 'GET', 'HEAD', 'POST', 'PUT', | |
| 'DELETE', 'TRACE'): | |
| self.method_others() | |
| self.client.close() | |
| self.target.close() | |
| def get_base_header(self): | |
| while 1: | |
| self.client_buffer += self.client.recv(BUFLEN) | |
| end = self.client_buffer.find('\n') | |
| if end!=-1: | |
| break | |
| print '%s'%self.client_buffer[:end]#debug | |
| data = (self.client_buffer[:end+1]).split() | |
| self.client_buffer = self.client_buffer[end+1:] | |
| return data | |
| def method_CONNECT(self): | |
| self._connect_target(self.path) | |
| self.client.send(HTTPVER+' 200 Connection established\n'+ | |
| 'Proxy-agent: %s\n\n'%VERSION) | |
| self.client_buffer = '' | |
| self._read_write() | |
| def method_others(self): | |
| self.path = self.path[7:] | |
| i = self.path.find('/') | |
| host = self.path[:i] | |
| path = self.path[i:] | |
| self._connect_target(host) | |
| self.target.send('%s %s %s\n'%(self.method, path, self.protocol)+ | |
| self.client_buffer) | |
| self.client_buffer = '' | |
| self._read_write() | |
| def _connect_target(self, host): | |
| i = host.find(':') | |
| if i!=-1: | |
| port = int(host[i+1:]) | |
| host = host[:i] | |
| else: | |
| port = 80 | |
| (soc_family, _, _, _, address) = socket.getaddrinfo(host, port)[0] | |
| self.target = socket.socket(soc_family) | |
| self.target.connect(address) | |
| def _read_write(self): | |
| time_out_max = self.timeout/3 | |
| socs = [self.client, self.target] | |
| count = 0 | |
| while 1: | |
| count += 1 | |
| (recv, _, error) = select.select(socs, [], socs, 3) | |
| if error: | |
| break | |
| if recv: | |
| for in_ in recv: | |
| data = in_.recv(BUFLEN) | |
| if in_ is self.client: | |
| out = self.target | |
| else: | |
| out = self.client | |
| if data: | |
| out.send(data) | |
| count = 0 | |
| if count == time_out_max: | |
| break | |
| def start_server(host='localhost', port=80, IPv6=False, timeout=60, | |
| handler=ConnectionHandler): | |
| if IPv6==True: | |
| soc_type=socket.AF_INET6 | |
| else: | |
| soc_type=socket.AF_INET | |
| soc = socket.socket(soc_type) | |
| soc.bind((host, port)) | |
| print "Serving on %s:%d."%(host, port)#debug | |
| soc.listen(0) | |
| while 1: | |
| thread.start_new_thread(handler, soc.accept()+(timeout,)) | |
| if __name__ == '__main__': | |
| start_server() |
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