Mercurial > hg
view tests/tinyproxy.py @ 31467:08ecec297521
bdiff: use Python memory allocator in fixws
Python has its own memory allocation APIs. For allocations
<= 512 bytes, it allocates memory from arenas. This means that
average small allocations don't call the system allocator, which
makes them faster. Also, arena allocations cut down on memory
fragmentation, which can matter for performance in long-running
processes.
Another advantage of using the Python memory allocator is that
allocations are tracked by Python. This is a bigger deal in
Python 3, as modern versions of Python have some decent built-in
tools for examining memory usage, leaks, etc.
This patch converts a trivial malloc() + free() in the bdiff code
to use the Python allocator APIs. Since the object being
operated on is a line, chances are it will use an arena. So,
this could have a net positive impact on performance (although
I didn't measure it).
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 09 Mar 2017 11:54:25 -0800 |
parents | d8d698bcdcd6 |
children | b2a41a826d71 |
line wrap: on
line source
#!/usr/bin/env python from __future__ import absolute_import, print_function __doc__ = """Tiny HTTP Proxy. This module implements GET, HEAD, POST, PUT and DELETE methods on BaseHTTPServer, and behaves as an HTTP proxy. The CONNECT method is also implemented experimentally, but has not been tested yet. Any help will be greatly appreciated. SUZUKI Hisao """ __version__ = "0.2.1" import optparse import os import select import socket import sys from mercurial import util httpserver = util.httpserver urlparse = util.urlparse socketserver = util.socketserver if os.environ.get('HGIPV6', '0') == '1': family = socket.AF_INET6 else: family = socket.AF_INET class ProxyHandler (httpserver.basehttprequesthandler): __base = httpserver.basehttprequesthandler __base_handle = __base.handle server_version = "TinyHTTPProxy/" + __version__ rbufsize = 0 # self.rfile Be unbuffered def handle(self): (ip, port) = self.client_address allowed = getattr(self, 'allowed_clients', None) if allowed is not None and ip not in allowed: self.raw_requestline = self.rfile.readline() if self.parse_request(): self.send_error(403) else: self.__base_handle() def log_request(self, code='-', size='-'): xheaders = [h for h in self.headers.items() if h[0].startswith('x-')] self.log_message('"%s" %s %s%s', self.requestline, str(code), str(size), ''.join([' %s:%s' % h for h in sorted(xheaders)])) def _connect_to(self, netloc, soc): i = netloc.find(':') if i >= 0: host_port = netloc[:i], int(netloc[i + 1:]) else: host_port = netloc, 80 print("\t" "connect to %s:%d" % host_port) try: soc.connect(host_port) except socket.error as arg: try: msg = arg[1] except (IndexError, TypeError): msg = arg self.send_error(404, msg) return 0 return 1 def do_CONNECT(self): soc = socket.socket(family, socket.SOCK_STREAM) try: if self._connect_to(self.path, soc): self.log_request(200) self.wfile.write(self.protocol_version + " 200 Connection established\r\n") self.wfile.write("Proxy-agent: %s\r\n" % self.version_string()) self.wfile.write("\r\n") self._read_write(soc, 300) finally: print("\t" "bye") soc.close() self.connection.close() def do_GET(self): (scm, netloc, path, params, query, fragment) = urlparse.urlparse( self.path, 'http') if scm != 'http' or fragment or not netloc: self.send_error(400, "bad url %s" % self.path) return soc = socket.socket(family, socket.SOCK_STREAM) try: if self._connect_to(netloc, soc): self.log_request() soc.send("%s %s %s\r\n" % ( self.command, urlparse.urlunparse(('', '', path, params, query, '')), self.request_version)) self.headers['Connection'] = 'close' del self.headers['Proxy-Connection'] for key_val in self.headers.items(): soc.send("%s: %s\r\n" % key_val) soc.send("\r\n") self._read_write(soc) finally: print("\t" "bye") soc.close() self.connection.close() def _read_write(self, soc, max_idling=20): iw = [self.connection, soc] ow = [] count = 0 while True: count += 1 (ins, _, exs) = select.select(iw, ow, iw, 3) if exs: break if ins: for i in ins: if i is soc: out = self.connection else: out = soc try: data = i.recv(8192) except socket.error: break if data: out.send(data) count = 0 else: print("\t" "idle", count) if count == max_idling: break do_HEAD = do_GET do_POST = do_GET do_PUT = do_GET do_DELETE = do_GET class ThreadingHTTPServer (socketserver.ThreadingMixIn, httpserver.httpserver): def __init__(self, *args, **kwargs): httpserver.httpserver.__init__(self, *args, **kwargs) a = open("proxy.pid", "w") a.write(str(os.getpid()) + "\n") a.close() def runserver(port=8000, bind=""): server_address = (bind, port) ProxyHandler.protocol_version = "HTTP/1.0" httpd = ThreadingHTTPServer(server_address, ProxyHandler) sa = httpd.socket.getsockname() print("Serving HTTP on", sa[0], "port", sa[1], "...") try: httpd.serve_forever() except KeyboardInterrupt: print("\nKeyboard interrupt received, exiting.") httpd.server_close() sys.exit(0) if __name__ == '__main__': argv = sys.argv if argv[1:] and argv[1] in ('-h', '--help'): print(argv[0], "[port [allowed_client_name ...]]") else: if argv[2:]: allowed = [] for name in argv[2:]: client = socket.gethostbyname(name) allowed.append(client) print("Accept: %s (%s)" % (client, name)) ProxyHandler.allowed_clients = allowed del argv[2:] else: print("Any clients will be served...") parser = optparse.OptionParser() parser.add_option('-b', '--bind', metavar='ADDRESS', help='Specify alternate bind address ' '[default: all interfaces]', default='') (options, args) = parser.parse_args() port = 8000 if len(args) == 1: port = int(args[0]) runserver(port, options.bind)