def _tunnel(self):
# Works around a bug in py26 which is fixed in later versions of
# python. Bug involves hitting an infinite loop if readline() returns
# nothing as opposed to just ``\r\n``.
# As much as I don't like having if py2: <foo> code blocks, this seems
# the cleanest way to handle this workaround. Fortunately, the
# difference from py26 to py3 is very minimal. We're essentially
# just overriding the while loop.
if sys.version_info[:2] != (2, 6):
return HTTPConnection._tunnel(self)
# Otherwise we workaround the issue.
self._set_hostport(self._tunnel_host, self._tunnel_port)
self.send("CONNECT %s:%d HTTP/1.0\r\n" % (self.host, self.port))
for header, value in self._tunnel_headers.iteritems():
self.send("%s: %s\r\n" % (header, value))
self.send("\r\n")
response = self.response_class(self.sock, strict = self.strict,
method = self._method)
(version, code, message) = response._read_status()
if code != 200:
self.close()
raise socket.error("Tunnel connection failed: %d %s" %
(code, message.strip()))
while True:
line = response.fp.readline()
if not line:
break
if line in (b'\r\n', b'\n', b''):
break
