mirror of
https://github.com/SickGear/SickGear.git
synced 2024-12-23 11:13:38 +00:00
704 lines
27 KiB
Python
704 lines
27 KiB
Python
from tornado.escape import _unicode
|
|
from tornado import gen, version
|
|
from tornado.httpclient import (
|
|
HTTPResponse,
|
|
HTTPError,
|
|
AsyncHTTPClient,
|
|
main,
|
|
_RequestProxy,
|
|
HTTPRequest,
|
|
)
|
|
from tornado import httputil
|
|
from tornado.http1connection import HTTP1Connection, HTTP1ConnectionParameters
|
|
from tornado.ioloop import IOLoop
|
|
from tornado.iostream import StreamClosedError, IOStream
|
|
from tornado.netutil import (
|
|
Resolver,
|
|
OverrideResolver,
|
|
_client_ssl_defaults,
|
|
is_valid_ip,
|
|
)
|
|
from tornado.log import gen_log
|
|
from tornado.tcpclient import TCPClient
|
|
|
|
import base64
|
|
import collections
|
|
import copy
|
|
import functools
|
|
import re
|
|
import socket
|
|
import ssl
|
|
import sys
|
|
import time
|
|
from io import BytesIO
|
|
import urllib.parse
|
|
|
|
from typing import Dict, Any, Callable, Optional, Type, Union
|
|
from types import TracebackType
|
|
import typing
|
|
|
|
if typing.TYPE_CHECKING:
|
|
from typing import Deque, Tuple, List # noqa: F401
|
|
|
|
|
|
class HTTPTimeoutError(HTTPError):
|
|
"""Error raised by SimpleAsyncHTTPClient on timeout.
|
|
|
|
For historical reasons, this is a subclass of `.HTTPClientError`
|
|
which simulates a response code of 599.
|
|
|
|
.. versionadded:: 5.1
|
|
"""
|
|
|
|
def __init__(self, message: str) -> None:
|
|
super().__init__(599, message=message)
|
|
|
|
def __str__(self) -> str:
|
|
return self.message or "Timeout"
|
|
|
|
|
|
class HTTPStreamClosedError(HTTPError):
|
|
"""Error raised by SimpleAsyncHTTPClient when the underlying stream is closed.
|
|
|
|
When a more specific exception is available (such as `ConnectionResetError`),
|
|
it may be raised instead of this one.
|
|
|
|
For historical reasons, this is a subclass of `.HTTPClientError`
|
|
which simulates a response code of 599.
|
|
|
|
.. versionadded:: 5.1
|
|
"""
|
|
|
|
def __init__(self, message: str) -> None:
|
|
super().__init__(599, message=message)
|
|
|
|
def __str__(self) -> str:
|
|
return self.message or "Stream closed"
|
|
|
|
|
|
class SimpleAsyncHTTPClient(AsyncHTTPClient):
|
|
"""Non-blocking HTTP client with no external dependencies.
|
|
|
|
This class implements an HTTP 1.1 client on top of Tornado's IOStreams.
|
|
Some features found in the curl-based AsyncHTTPClient are not yet
|
|
supported. In particular, proxies are not supported, connections
|
|
are not reused, and callers cannot select the network interface to be
|
|
used.
|
|
|
|
This implementation supports the following arguments, which can be passed
|
|
to ``configure()`` to control the global singleton, or to the constructor
|
|
when ``force_instance=True``.
|
|
|
|
``max_clients`` is the number of concurrent requests that can be
|
|
in progress; when this limit is reached additional requests will be
|
|
queued. Note that time spent waiting in this queue still counts
|
|
against the ``request_timeout``.
|
|
|
|
``defaults`` is a dict of parameters that will be used as defaults on all
|
|
`.HTTPRequest` objects submitted to this client.
|
|
|
|
``hostname_mapping`` is a dictionary mapping hostnames to IP addresses.
|
|
It can be used to make local DNS changes when modifying system-wide
|
|
settings like ``/etc/hosts`` is not possible or desirable (e.g. in
|
|
unittests). ``resolver`` is similar, but using the `.Resolver` interface
|
|
instead of a simple mapping.
|
|
|
|
``max_buffer_size`` (default 100MB) is the number of bytes
|
|
that can be read into memory at once. ``max_body_size``
|
|
(defaults to ``max_buffer_size``) is the largest response body
|
|
that the client will accept. Without a
|
|
``streaming_callback``, the smaller of these two limits
|
|
applies; with a ``streaming_callback`` only ``max_body_size``
|
|
does.
|
|
|
|
.. versionchanged:: 4.2
|
|
Added the ``max_body_size`` argument.
|
|
"""
|
|
|
|
def initialize( # type: ignore
|
|
self,
|
|
max_clients: int = 10,
|
|
hostname_mapping: Optional[Dict[str, str]] = None,
|
|
max_buffer_size: int = 104857600,
|
|
resolver: Optional[Resolver] = None,
|
|
defaults: Optional[Dict[str, Any]] = None,
|
|
max_header_size: Optional[int] = None,
|
|
max_body_size: Optional[int] = None,
|
|
) -> None:
|
|
super().initialize(defaults=defaults)
|
|
self.max_clients = max_clients
|
|
self.queue = (
|
|
collections.deque()
|
|
) # type: Deque[Tuple[object, HTTPRequest, Callable[[HTTPResponse], None]]]
|
|
self.active = (
|
|
{}
|
|
) # type: Dict[object, Tuple[HTTPRequest, Callable[[HTTPResponse], None]]]
|
|
self.waiting = (
|
|
{}
|
|
) # type: Dict[object, Tuple[HTTPRequest, Callable[[HTTPResponse], None], object]]
|
|
self.max_buffer_size = max_buffer_size
|
|
self.max_header_size = max_header_size
|
|
self.max_body_size = max_body_size
|
|
# TCPClient could create a Resolver for us, but we have to do it
|
|
# ourselves to support hostname_mapping.
|
|
if resolver:
|
|
self.resolver = resolver
|
|
self.own_resolver = False
|
|
else:
|
|
self.resolver = Resolver()
|
|
self.own_resolver = True
|
|
if hostname_mapping is not None:
|
|
self.resolver = OverrideResolver(
|
|
resolver=self.resolver, mapping=hostname_mapping
|
|
)
|
|
self.tcp_client = TCPClient(resolver=self.resolver)
|
|
|
|
def close(self) -> None:
|
|
super().close()
|
|
if self.own_resolver:
|
|
self.resolver.close()
|
|
self.tcp_client.close()
|
|
|
|
def fetch_impl(
|
|
self, request: HTTPRequest, callback: Callable[[HTTPResponse], None]
|
|
) -> None:
|
|
key = object()
|
|
self.queue.append((key, request, callback))
|
|
assert request.connect_timeout is not None
|
|
assert request.request_timeout is not None
|
|
timeout_handle = None
|
|
if len(self.active) >= self.max_clients:
|
|
timeout = (
|
|
min(request.connect_timeout, request.request_timeout)
|
|
or request.connect_timeout
|
|
or request.request_timeout
|
|
) # min but skip zero
|
|
if timeout:
|
|
timeout_handle = self.io_loop.add_timeout(
|
|
self.io_loop.time() + timeout,
|
|
functools.partial(self._on_timeout, key, "in request queue"),
|
|
)
|
|
self.waiting[key] = (request, callback, timeout_handle)
|
|
self._process_queue()
|
|
if self.queue:
|
|
gen_log.debug(
|
|
"max_clients limit reached, request queued. "
|
|
"%d active, %d queued requests." % (len(self.active), len(self.queue))
|
|
)
|
|
|
|
def _process_queue(self) -> None:
|
|
while self.queue and len(self.active) < self.max_clients:
|
|
key, request, callback = self.queue.popleft()
|
|
if key not in self.waiting:
|
|
continue
|
|
self._remove_timeout(key)
|
|
self.active[key] = (request, callback)
|
|
release_callback = functools.partial(self._release_fetch, key)
|
|
self._handle_request(request, release_callback, callback)
|
|
|
|
def _connection_class(self) -> type:
|
|
return _HTTPConnection
|
|
|
|
def _handle_request(
|
|
self,
|
|
request: HTTPRequest,
|
|
release_callback: Callable[[], None],
|
|
final_callback: Callable[[HTTPResponse], None],
|
|
) -> None:
|
|
self._connection_class()(
|
|
self,
|
|
request,
|
|
release_callback,
|
|
final_callback,
|
|
self.max_buffer_size,
|
|
self.tcp_client,
|
|
self.max_header_size,
|
|
self.max_body_size,
|
|
)
|
|
|
|
def _release_fetch(self, key: object) -> None:
|
|
del self.active[key]
|
|
self._process_queue()
|
|
|
|
def _remove_timeout(self, key: object) -> None:
|
|
if key in self.waiting:
|
|
request, callback, timeout_handle = self.waiting[key]
|
|
if timeout_handle is not None:
|
|
self.io_loop.remove_timeout(timeout_handle)
|
|
del self.waiting[key]
|
|
|
|
def _on_timeout(self, key: object, info: Optional[str] = None) -> None:
|
|
"""Timeout callback of request.
|
|
|
|
Construct a timeout HTTPResponse when a timeout occurs.
|
|
|
|
:arg object key: A simple object to mark the request.
|
|
:info string key: More detailed timeout information.
|
|
"""
|
|
request, callback, timeout_handle = self.waiting[key]
|
|
self.queue.remove((key, request, callback))
|
|
|
|
error_message = "Timeout {0}".format(info) if info else "Timeout"
|
|
timeout_response = HTTPResponse(
|
|
request,
|
|
599,
|
|
error=HTTPTimeoutError(error_message),
|
|
request_time=self.io_loop.time() - request.start_time,
|
|
)
|
|
self.io_loop.add_callback(callback, timeout_response)
|
|
del self.waiting[key]
|
|
|
|
|
|
class _HTTPConnection(httputil.HTTPMessageDelegate):
|
|
_SUPPORTED_METHODS = set(
|
|
["GET", "HEAD", "POST", "PUT", "DELETE", "PATCH", "OPTIONS"]
|
|
)
|
|
|
|
def __init__(
|
|
self,
|
|
client: Optional[SimpleAsyncHTTPClient],
|
|
request: HTTPRequest,
|
|
release_callback: Callable[[], None],
|
|
final_callback: Callable[[HTTPResponse], None],
|
|
max_buffer_size: int,
|
|
tcp_client: TCPClient,
|
|
max_header_size: int,
|
|
max_body_size: int,
|
|
) -> None:
|
|
self.io_loop = IOLoop.current()
|
|
self.start_time = self.io_loop.time()
|
|
self.start_wall_time = time.time()
|
|
self.client = client
|
|
self.request = request
|
|
self.release_callback = release_callback
|
|
self.final_callback = final_callback
|
|
self.max_buffer_size = max_buffer_size
|
|
self.tcp_client = tcp_client
|
|
self.max_header_size = max_header_size
|
|
self.max_body_size = max_body_size
|
|
self.code = None # type: Optional[int]
|
|
self.headers = None # type: Optional[httputil.HTTPHeaders]
|
|
self.chunks = [] # type: List[bytes]
|
|
self._decompressor = None
|
|
# Timeout handle returned by IOLoop.add_timeout
|
|
self._timeout = None # type: object
|
|
self._sockaddr = None
|
|
IOLoop.current().add_future(
|
|
gen.convert_yielded(self.run()), lambda f: f.result()
|
|
)
|
|
|
|
async def run(self) -> None:
|
|
try:
|
|
self.parsed = urllib.parse.urlsplit(_unicode(self.request.url))
|
|
if self.parsed.scheme not in ("http", "https"):
|
|
raise ValueError("Unsupported url scheme: %s" % self.request.url)
|
|
# urlsplit results have hostname and port results, but they
|
|
# didn't support ipv6 literals until python 2.7.
|
|
netloc = self.parsed.netloc
|
|
if "@" in netloc:
|
|
userpass, _, netloc = netloc.rpartition("@")
|
|
host, port = httputil.split_host_and_port(netloc)
|
|
if port is None:
|
|
port = 443 if self.parsed.scheme == "https" else 80
|
|
if re.match(r"^\[.*\]$", host):
|
|
# raw ipv6 addresses in urls are enclosed in brackets
|
|
host = host[1:-1]
|
|
self.parsed_hostname = host # save final host for _on_connect
|
|
|
|
if self.request.allow_ipv6 is False:
|
|
af = socket.AF_INET
|
|
else:
|
|
af = socket.AF_UNSPEC
|
|
|
|
ssl_options = self._get_ssl_options(self.parsed.scheme)
|
|
|
|
source_ip = None
|
|
if self.request.network_interface:
|
|
if is_valid_ip(self.request.network_interface):
|
|
source_ip = self.request.network_interface
|
|
else:
|
|
raise ValueError(
|
|
"Unrecognized IPv4 or IPv6 address for network_interface, got %r"
|
|
% (self.request.network_interface,)
|
|
)
|
|
|
|
if self.request.connect_timeout and self.request.request_timeout:
|
|
timeout = min(
|
|
self.request.connect_timeout, self.request.request_timeout
|
|
)
|
|
elif self.request.connect_timeout:
|
|
timeout = self.request.connect_timeout
|
|
elif self.request.request_timeout:
|
|
timeout = self.request.request_timeout
|
|
else:
|
|
timeout = 0
|
|
if timeout:
|
|
self._timeout = self.io_loop.add_timeout(
|
|
self.start_time + timeout,
|
|
functools.partial(self._on_timeout, "while connecting"),
|
|
)
|
|
stream = await self.tcp_client.connect(
|
|
host,
|
|
port,
|
|
af=af,
|
|
ssl_options=ssl_options,
|
|
max_buffer_size=self.max_buffer_size,
|
|
source_ip=source_ip,
|
|
)
|
|
|
|
if self.final_callback is None:
|
|
# final_callback is cleared if we've hit our timeout.
|
|
stream.close()
|
|
return
|
|
self.stream = stream
|
|
self.stream.set_close_callback(self.on_connection_close)
|
|
self._remove_timeout()
|
|
if self.final_callback is None:
|
|
return
|
|
if self.request.request_timeout:
|
|
self._timeout = self.io_loop.add_timeout(
|
|
self.start_time + self.request.request_timeout,
|
|
functools.partial(self._on_timeout, "during request"),
|
|
)
|
|
if (
|
|
self.request.method not in self._SUPPORTED_METHODS
|
|
and not self.request.allow_nonstandard_methods
|
|
):
|
|
raise KeyError("unknown method %s" % self.request.method)
|
|
for key in (
|
|
"proxy_host",
|
|
"proxy_port",
|
|
"proxy_username",
|
|
"proxy_password",
|
|
"proxy_auth_mode",
|
|
):
|
|
if getattr(self.request, key, None):
|
|
raise NotImplementedError("%s not supported" % key)
|
|
if "Connection" not in self.request.headers:
|
|
self.request.headers["Connection"] = "close"
|
|
if "Host" not in self.request.headers:
|
|
if "@" in self.parsed.netloc:
|
|
self.request.headers["Host"] = self.parsed.netloc.rpartition("@")[
|
|
-1
|
|
]
|
|
else:
|
|
self.request.headers["Host"] = self.parsed.netloc
|
|
username, password = None, None
|
|
if self.parsed.username is not None:
|
|
username, password = self.parsed.username, self.parsed.password
|
|
elif self.request.auth_username is not None:
|
|
username = self.request.auth_username
|
|
password = self.request.auth_password or ""
|
|
if username is not None:
|
|
assert password is not None
|
|
if self.request.auth_mode not in (None, "basic"):
|
|
raise ValueError("unsupported auth_mode %s", self.request.auth_mode)
|
|
self.request.headers["Authorization"] = "Basic " + _unicode(
|
|
base64.b64encode(
|
|
httputil.encode_username_password(username, password)
|
|
)
|
|
)
|
|
if self.request.user_agent:
|
|
self.request.headers["User-Agent"] = self.request.user_agent
|
|
elif self.request.headers.get("User-Agent") is None:
|
|
self.request.headers["User-Agent"] = "Tornado/{}".format(version)
|
|
if not self.request.allow_nonstandard_methods:
|
|
# Some HTTP methods nearly always have bodies while others
|
|
# almost never do. Fail in this case unless the user has
|
|
# opted out of sanity checks with allow_nonstandard_methods.
|
|
body_expected = self.request.method in ("POST", "PATCH", "PUT")
|
|
body_present = (
|
|
self.request.body is not None
|
|
or self.request.body_producer is not None
|
|
)
|
|
if (body_expected and not body_present) or (
|
|
body_present and not body_expected
|
|
):
|
|
raise ValueError(
|
|
"Body must %sbe None for method %s (unless "
|
|
"allow_nonstandard_methods is true)"
|
|
% ("not " if body_expected else "", self.request.method)
|
|
)
|
|
if self.request.expect_100_continue:
|
|
self.request.headers["Expect"] = "100-continue"
|
|
if self.request.body is not None:
|
|
# When body_producer is used the caller is responsible for
|
|
# setting Content-Length (or else chunked encoding will be used).
|
|
self.request.headers["Content-Length"] = str(len(self.request.body))
|
|
if (
|
|
self.request.method == "POST"
|
|
and "Content-Type" not in self.request.headers
|
|
):
|
|
self.request.headers[
|
|
"Content-Type"
|
|
] = "application/x-www-form-urlencoded"
|
|
if self.request.decompress_response:
|
|
self.request.headers["Accept-Encoding"] = "gzip"
|
|
req_path = (self.parsed.path or "/") + (
|
|
("?" + self.parsed.query) if self.parsed.query else ""
|
|
)
|
|
self.connection = self._create_connection(stream)
|
|
start_line = httputil.RequestStartLine(self.request.method, req_path, "")
|
|
self.connection.write_headers(start_line, self.request.headers)
|
|
if self.request.expect_100_continue:
|
|
await self.connection.read_response(self)
|
|
else:
|
|
await self._write_body(True)
|
|
except Exception:
|
|
if not self._handle_exception(*sys.exc_info()):
|
|
raise
|
|
|
|
def _get_ssl_options(
|
|
self, scheme: str
|
|
) -> Union[None, Dict[str, Any], ssl.SSLContext]:
|
|
if scheme == "https":
|
|
if self.request.ssl_options is not None:
|
|
return self.request.ssl_options
|
|
# If we are using the defaults, don't construct a
|
|
# new SSLContext.
|
|
if (
|
|
self.request.validate_cert
|
|
and self.request.ca_certs is None
|
|
and self.request.client_cert is None
|
|
and self.request.client_key is None
|
|
):
|
|
return _client_ssl_defaults
|
|
ssl_ctx = ssl.create_default_context(
|
|
ssl.Purpose.SERVER_AUTH, cafile=self.request.ca_certs
|
|
)
|
|
if not self.request.validate_cert:
|
|
ssl_ctx.check_hostname = False
|
|
ssl_ctx.verify_mode = ssl.CERT_NONE
|
|
if self.request.client_cert is not None:
|
|
ssl_ctx.load_cert_chain(
|
|
self.request.client_cert, self.request.client_key
|
|
)
|
|
if hasattr(ssl, "OP_NO_COMPRESSION"):
|
|
# See netutil.ssl_options_to_context
|
|
ssl_ctx.options |= ssl.OP_NO_COMPRESSION
|
|
return ssl_ctx
|
|
return None
|
|
|
|
def _on_timeout(self, info: Optional[str] = None) -> None:
|
|
"""Timeout callback of _HTTPConnection instance.
|
|
|
|
Raise a `HTTPTimeoutError` when a timeout occurs.
|
|
|
|
:info string key: More detailed timeout information.
|
|
"""
|
|
self._timeout = None
|
|
error_message = "Timeout {0}".format(info) if info else "Timeout"
|
|
if self.final_callback is not None:
|
|
self._handle_exception(
|
|
HTTPTimeoutError, HTTPTimeoutError(error_message), None
|
|
)
|
|
|
|
def _remove_timeout(self) -> None:
|
|
if self._timeout is not None:
|
|
self.io_loop.remove_timeout(self._timeout)
|
|
self._timeout = None
|
|
|
|
def _create_connection(self, stream: IOStream) -> HTTP1Connection:
|
|
stream.set_nodelay(True)
|
|
connection = HTTP1Connection(
|
|
stream,
|
|
True,
|
|
HTTP1ConnectionParameters(
|
|
no_keep_alive=True,
|
|
max_header_size=self.max_header_size,
|
|
max_body_size=self.max_body_size,
|
|
decompress=bool(self.request.decompress_response),
|
|
),
|
|
self._sockaddr,
|
|
)
|
|
return connection
|
|
|
|
async def _write_body(self, start_read: bool) -> None:
|
|
if self.request.body is not None:
|
|
self.connection.write(self.request.body)
|
|
elif self.request.body_producer is not None:
|
|
fut = self.request.body_producer(self.connection.write)
|
|
if fut is not None:
|
|
await fut
|
|
self.connection.finish()
|
|
if start_read:
|
|
try:
|
|
await self.connection.read_response(self)
|
|
except StreamClosedError:
|
|
if not self._handle_exception(*sys.exc_info()):
|
|
raise
|
|
|
|
def _release(self) -> None:
|
|
if self.release_callback is not None:
|
|
release_callback = self.release_callback
|
|
self.release_callback = None # type: ignore
|
|
release_callback()
|
|
|
|
def _run_callback(self, response: HTTPResponse) -> None:
|
|
self._release()
|
|
if self.final_callback is not None:
|
|
final_callback = self.final_callback
|
|
self.final_callback = None # type: ignore
|
|
self.io_loop.add_callback(final_callback, response)
|
|
|
|
def _handle_exception(
|
|
self,
|
|
typ: "Optional[Type[BaseException]]",
|
|
value: Optional[BaseException],
|
|
tb: Optional[TracebackType],
|
|
) -> bool:
|
|
if self.final_callback is not None:
|
|
self._remove_timeout()
|
|
if isinstance(value, StreamClosedError):
|
|
if value.real_error is None:
|
|
value = HTTPStreamClosedError("Stream closed")
|
|
else:
|
|
value = value.real_error
|
|
self._run_callback(
|
|
HTTPResponse(
|
|
self.request,
|
|
599,
|
|
error=value,
|
|
request_time=self.io_loop.time() - self.start_time,
|
|
start_time=self.start_wall_time,
|
|
)
|
|
)
|
|
|
|
if hasattr(self, "stream"):
|
|
# TODO: this may cause a StreamClosedError to be raised
|
|
# by the connection's Future. Should we cancel the
|
|
# connection more gracefully?
|
|
self.stream.close()
|
|
return True
|
|
else:
|
|
# If our callback has already been called, we are probably
|
|
# catching an exception that is not caused by us but rather
|
|
# some child of our callback. Rather than drop it on the floor,
|
|
# pass it along, unless it's just the stream being closed.
|
|
return isinstance(value, StreamClosedError)
|
|
|
|
def on_connection_close(self) -> None:
|
|
if self.final_callback is not None:
|
|
message = "Connection closed"
|
|
if self.stream.error:
|
|
raise self.stream.error
|
|
try:
|
|
raise HTTPStreamClosedError(message)
|
|
except HTTPStreamClosedError:
|
|
self._handle_exception(*sys.exc_info())
|
|
|
|
async def headers_received(
|
|
self,
|
|
first_line: Union[httputil.ResponseStartLine, httputil.RequestStartLine],
|
|
headers: httputil.HTTPHeaders,
|
|
) -> None:
|
|
assert isinstance(first_line, httputil.ResponseStartLine)
|
|
if self.request.expect_100_continue and first_line.code == 100:
|
|
await self._write_body(False)
|
|
return
|
|
self.code = first_line.code
|
|
self.reason = first_line.reason
|
|
self.headers = headers
|
|
|
|
if self._should_follow_redirect():
|
|
return
|
|
|
|
if self.request.header_callback is not None:
|
|
# Reassemble the start line.
|
|
self.request.header_callback("%s %s %s\r\n" % first_line)
|
|
for k, v in self.headers.get_all():
|
|
self.request.header_callback("%s: %s\r\n" % (k, v))
|
|
self.request.header_callback("\r\n")
|
|
|
|
def _should_follow_redirect(self) -> bool:
|
|
if self.request.follow_redirects:
|
|
assert self.request.max_redirects is not None
|
|
return (
|
|
self.code in (301, 302, 303, 307, 308)
|
|
and self.request.max_redirects > 0
|
|
and self.headers is not None
|
|
and self.headers.get("Location") is not None
|
|
)
|
|
return False
|
|
|
|
def finish(self) -> None:
|
|
assert self.code is not None
|
|
data = b"".join(self.chunks)
|
|
self._remove_timeout()
|
|
original_request = getattr(self.request, "original_request", self.request)
|
|
if self._should_follow_redirect():
|
|
assert isinstance(self.request, _RequestProxy)
|
|
assert self.headers is not None
|
|
new_request = copy.copy(self.request.request)
|
|
new_request.url = urllib.parse.urljoin(
|
|
self.request.url, self.headers["Location"]
|
|
)
|
|
assert self.request.max_redirects is not None
|
|
new_request.max_redirects = self.request.max_redirects - 1
|
|
del new_request.headers["Host"]
|
|
# https://tools.ietf.org/html/rfc7231#section-6.4
|
|
#
|
|
# The original HTTP spec said that after a 301 or 302
|
|
# redirect, the request method should be preserved.
|
|
# However, browsers implemented this by changing the
|
|
# method to GET, and the behavior stuck. 303 redirects
|
|
# always specified this POST-to-GET behavior, arguably
|
|
# for *all* methods, but libcurl < 7.70 only does this
|
|
# for POST, while libcurl >= 7.70 does it for other methods.
|
|
if (self.code == 303 and self.request.method != "HEAD") or (
|
|
self.code in (301, 302) and self.request.method == "POST"
|
|
):
|
|
new_request.method = "GET"
|
|
new_request.body = None # type: ignore
|
|
for h in [
|
|
"Content-Length",
|
|
"Content-Type",
|
|
"Content-Encoding",
|
|
"Transfer-Encoding",
|
|
]:
|
|
try:
|
|
del self.request.headers[h]
|
|
except KeyError:
|
|
pass
|
|
new_request.original_request = original_request # type: ignore
|
|
final_callback = self.final_callback
|
|
self.final_callback = None # type: ignore
|
|
self._release()
|
|
assert self.client is not None
|
|
fut = self.client.fetch(new_request, raise_error=False)
|
|
fut.add_done_callback(lambda f: final_callback(f.result()))
|
|
self._on_end_request()
|
|
return
|
|
if self.request.streaming_callback:
|
|
buffer = BytesIO()
|
|
else:
|
|
buffer = BytesIO(data) # TODO: don't require one big string?
|
|
response = HTTPResponse(
|
|
original_request,
|
|
self.code,
|
|
reason=getattr(self, "reason", None),
|
|
headers=self.headers,
|
|
request_time=self.io_loop.time() - self.start_time,
|
|
start_time=self.start_wall_time,
|
|
buffer=buffer,
|
|
effective_url=self.request.url,
|
|
)
|
|
self._run_callback(response)
|
|
self._on_end_request()
|
|
|
|
def _on_end_request(self) -> None:
|
|
self.stream.close()
|
|
|
|
def data_received(self, chunk: bytes) -> None:
|
|
if self._should_follow_redirect():
|
|
# We're going to follow a redirect so just discard the body.
|
|
return
|
|
if self.request.streaming_callback is not None:
|
|
self.request.streaming_callback(chunk)
|
|
else:
|
|
self.chunks.append(chunk)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
AsyncHTTPClient.configure(SimpleAsyncHTTPClient)
|
|
main()
|