def __init__(self, *args, **kwargs):
HTTPConnection.__init__(self, *args, **kwargs)
self._original_response_cls = self.response_class
# We'd ideally hook into httplib's states, but they're all
# __mangled_vars so we use our own state var. This variable is set
# when we receive an early response from the server. If this value is
# set to True, any calls to send() are noops. This value is reset to
# false every time _send_request is called. This is to workaround the
# fact that py2.6 (and only py2.6) has a separate send() call for the
# body in _send_request, as opposed to endheaders(), which is where the
# body is sent in all versions > 2.6.
self._response_received = False
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
def _send_request(self, method, url, body, headers):
self._response_received = False
if headers.get('Expect', '') == '100-continue':
self._expect_header_set = True
else:
self._expect_header_set = False
self.response_class = self._original_response_cls
rval = HTTPConnection._send_request(
self, method, url, body, headers)
self._expect_header_set = False
return rval
def send(self, str):
if self._response_received:
logger.debug("send() called, but reseponse already received. "
"Not sending data.")
return
return HTTPConnection.send(self, str)
