def req_start(self, method, uri, req_hdrs, req_body_pause):
"""
Start a request to uri using method, where
req_hdrs is a list of (field_name, field_value) for
the request headers.
Returns a (req_body, req_done) tuple.
"""
self._req_body_pause_cb = req_body_pause
req_hdrs = [i for i in req_hdrs \
if not i[0].lower() in req_remove_hdrs]
(scheme, authority, path, query, fragment) = urlsplit(uri)
if scheme.lower() != 'http':
self._handle_error(ERR_URL, "Only HTTP URLs are supported")
return dummy, dummy
if "@" in authority:
userinfo, authority = authority.split("@", 1)
if ":" in authority:
host, port = authority.rsplit(":", 1)
try:
port = int(port)
except ValueError:
self._handle_error(ERR_URL, "Non-integer port in URL")
return dummy, dummy
else:
host, port = authority, 80
if path == "":
path = "/"
uri = urlunsplit(('', '', path, query, ''))
self.method, self.uri, self.req_hdrs = method, uri, req_hdrs
self.req_hdrs.append(("Host", host)) # FIXME: port
self.req_hdrs.append(("Connection", "keep-alive"))
try:
body_len = int(get_hdr(req_hdrs, "content-length").pop(0))
delimit = COUNTED
except (IndexError, ValueError):
body_len = None
delimit = NOBODY
self._output_start("%s %s HTTP/1.1" % (self.method, self.uri), self.req_hdrs, delimit)
_idle_pool.attach(host, port, self._handle_connect, self._handle_connect_error, self.connect_timeout)
return self.req_body, self.req_done
def res_start(self, status_code, status_phrase, res_hdrs, res_body_pause):
"Start a response. Must only be called once per response."
self._res_body_pause_cb = res_body_pause
res_hdrs = [i for i in res_hdrs \
if not i[0].lower() in hop_by_hop_hdrs ]
try:
body_len = int(get_hdr(res_hdrs, "content-length").pop(0))
except (IndexError, ValueError):
body_len = None
if body_len is not None:
delimit = COUNTED
res_hdrs.append(("Connection", "keep-alive"))
elif 2.0 > self.req_version >= 1.1:
delimit = CHUNKED
res_hdrs.append(("Transfer-Encoding", "chunked"))
else:
delimit = CLOSE
res_hdrs.append(("Connection", "close"))
self._output_start("HTTP/1.1 %s %s" % (status_code, status_phrase), res_hdrs, delimit)
return self.res_body, self.res_done