mirror of
https://github.com/moparisthebest/SickRage
synced 2024-12-12 11:02:21 -05:00
651 lines
27 KiB
Python
651 lines
27 KiB
Python
#!/usr/bin/env python
|
|
#
|
|
# Copyright 2014 Facebook
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
"""Client and server implementations of HTTP/1.x.
|
|
|
|
.. versionadded:: 4.0
|
|
"""
|
|
|
|
from __future__ import absolute_import, division, print_function, with_statement
|
|
|
|
from tornado.concurrent import Future
|
|
from tornado.escape import native_str, utf8
|
|
from tornado import gen
|
|
from tornado import httputil
|
|
from tornado import iostream
|
|
from tornado.log import gen_log, app_log
|
|
from tornado import stack_context
|
|
from tornado.util import GzipDecompressor
|
|
|
|
|
|
class _QuietException(Exception):
|
|
def __init__(self):
|
|
pass
|
|
|
|
class _ExceptionLoggingContext(object):
|
|
"""Used with the ``with`` statement when calling delegate methods to
|
|
log any exceptions with the given logger. Any exceptions caught are
|
|
converted to _QuietException
|
|
"""
|
|
def __init__(self, logger):
|
|
self.logger = logger
|
|
|
|
def __enter__(self):
|
|
pass
|
|
|
|
def __exit__(self, typ, value, tb):
|
|
if value is not None:
|
|
self.logger.error("Uncaught exception", exc_info=(typ, value, tb))
|
|
raise _QuietException
|
|
|
|
class HTTP1ConnectionParameters(object):
|
|
"""Parameters for `.HTTP1Connection` and `.HTTP1ServerConnection`.
|
|
"""
|
|
def __init__(self, no_keep_alive=False, chunk_size=None,
|
|
max_header_size=None, header_timeout=None, max_body_size=None,
|
|
body_timeout=None, use_gzip=False):
|
|
"""
|
|
:arg bool no_keep_alive: If true, always close the connection after
|
|
one request.
|
|
:arg int chunk_size: how much data to read into memory at once
|
|
:arg int max_header_size: maximum amount of data for HTTP headers
|
|
:arg float header_timeout: how long to wait for all headers (seconds)
|
|
:arg int max_body_size: maximum amount of data for body
|
|
:arg float body_timeout: how long to wait while reading body (seconds)
|
|
:arg bool use_gzip: if true, decode incoming ``Content-Encoding: gzip``
|
|
"""
|
|
self.no_keep_alive = no_keep_alive
|
|
self.chunk_size = chunk_size or 65536
|
|
self.max_header_size = max_header_size or 65536
|
|
self.header_timeout = header_timeout
|
|
self.max_body_size = max_body_size
|
|
self.body_timeout = body_timeout
|
|
self.use_gzip = use_gzip
|
|
|
|
|
|
class HTTP1Connection(httputil.HTTPConnection):
|
|
"""Implements the HTTP/1.x protocol.
|
|
|
|
This class can be on its own for clients, or via `HTTP1ServerConnection`
|
|
for servers.
|
|
"""
|
|
def __init__(self, stream, is_client, params=None, context=None):
|
|
"""
|
|
:arg stream: an `.IOStream`
|
|
:arg bool is_client: client or server
|
|
:arg params: a `.HTTP1ConnectionParameters` instance or ``None``
|
|
:arg context: an opaque application-defined object that can be accessed
|
|
as ``connection.context``.
|
|
"""
|
|
self.is_client = is_client
|
|
self.stream = stream
|
|
if params is None:
|
|
params = HTTP1ConnectionParameters()
|
|
self.params = params
|
|
self.context = context
|
|
self.no_keep_alive = params.no_keep_alive
|
|
# The body limits can be altered by the delegate, so save them
|
|
# here instead of just referencing self.params later.
|
|
self._max_body_size = (self.params.max_body_size or
|
|
self.stream.max_buffer_size)
|
|
self._body_timeout = self.params.body_timeout
|
|
# _write_finished is set to True when finish() has been called,
|
|
# i.e. there will be no more data sent. Data may still be in the
|
|
# stream's write buffer.
|
|
self._write_finished = False
|
|
# True when we have read the entire incoming body.
|
|
self._read_finished = False
|
|
# _finish_future resolves when all data has been written and flushed
|
|
# to the IOStream.
|
|
self._finish_future = Future()
|
|
# If true, the connection should be closed after this request
|
|
# (after the response has been written in the server side,
|
|
# and after it has been read in the client)
|
|
self._disconnect_on_finish = False
|
|
self._clear_callbacks()
|
|
# Save the start lines after we read or write them; they
|
|
# affect later processing (e.g. 304 responses and HEAD methods
|
|
# have content-length but no bodies)
|
|
self._request_start_line = None
|
|
self._response_start_line = None
|
|
self._request_headers = None
|
|
# True if we are writing output with chunked encoding.
|
|
self._chunking_output = None
|
|
# While reading a body with a content-length, this is the
|
|
# amount left to read.
|
|
self._expected_content_remaining = None
|
|
# A Future for our outgoing writes, returned by IOStream.write.
|
|
self._pending_write = None
|
|
|
|
def read_response(self, delegate):
|
|
"""Read a single HTTP response.
|
|
|
|
Typical client-mode usage is to write a request using `write_headers`,
|
|
`write`, and `finish`, and then call ``read_response``.
|
|
|
|
:arg delegate: a `.HTTPMessageDelegate`
|
|
|
|
Returns a `.Future` that resolves to None after the full response has
|
|
been read.
|
|
"""
|
|
if self.params.use_gzip:
|
|
delegate = _GzipMessageDelegate(delegate, self.params.chunk_size)
|
|
return self._read_message(delegate)
|
|
|
|
@gen.coroutine
|
|
def _read_message(self, delegate):
|
|
need_delegate_close = False
|
|
try:
|
|
header_future = self.stream.read_until_regex(
|
|
b"\r?\n\r?\n",
|
|
max_bytes=self.params.max_header_size)
|
|
if self.params.header_timeout is None:
|
|
header_data = yield header_future
|
|
else:
|
|
try:
|
|
header_data = yield gen.with_timeout(
|
|
self.stream.io_loop.time() + self.params.header_timeout,
|
|
header_future,
|
|
io_loop=self.stream.io_loop)
|
|
except gen.TimeoutError:
|
|
self.close()
|
|
raise gen.Return(False)
|
|
start_line, headers = self._parse_headers(header_data)
|
|
if self.is_client:
|
|
start_line = httputil.parse_response_start_line(start_line)
|
|
self._response_start_line = start_line
|
|
else:
|
|
start_line = httputil.parse_request_start_line(start_line)
|
|
self._request_start_line = start_line
|
|
self._request_headers = headers
|
|
|
|
self._disconnect_on_finish = not self._can_keep_alive(
|
|
start_line, headers)
|
|
need_delegate_close = True
|
|
with _ExceptionLoggingContext(app_log):
|
|
header_future = delegate.headers_received(start_line, headers)
|
|
if header_future is not None:
|
|
yield header_future
|
|
if self.stream is None:
|
|
# We've been detached.
|
|
need_delegate_close = False
|
|
raise gen.Return(False)
|
|
skip_body = False
|
|
if self.is_client:
|
|
if (self._request_start_line is not None and
|
|
self._request_start_line.method == 'HEAD'):
|
|
skip_body = True
|
|
code = start_line.code
|
|
if code == 304:
|
|
skip_body = True
|
|
if code >= 100 and code < 200:
|
|
# TODO: client delegates will get headers_received twice
|
|
# in the case of a 100-continue. Document or change?
|
|
yield self._read_message(delegate)
|
|
else:
|
|
if (headers.get("Expect") == "100-continue" and
|
|
not self._write_finished):
|
|
self.stream.write(b"HTTP/1.1 100 (Continue)\r\n\r\n")
|
|
if not skip_body:
|
|
body_future = self._read_body(headers, delegate)
|
|
if body_future is not None:
|
|
if self._body_timeout is None:
|
|
yield body_future
|
|
else:
|
|
try:
|
|
yield gen.with_timeout(
|
|
self.stream.io_loop.time() + self._body_timeout,
|
|
body_future, self.stream.io_loop)
|
|
except gen.TimeoutError:
|
|
gen_log.info("Timeout reading body from %s",
|
|
self.context)
|
|
self.stream.close()
|
|
raise gen.Return(False)
|
|
self._read_finished = True
|
|
if not self._write_finished or self.is_client:
|
|
need_delegate_close = False
|
|
with _ExceptionLoggingContext(app_log):
|
|
delegate.finish()
|
|
# If we're waiting for the application to produce an asynchronous
|
|
# response, and we're not detached, register a close callback
|
|
# on the stream (we didn't need one while we were reading)
|
|
if (not self._finish_future.done() and
|
|
self.stream is not None and
|
|
not self.stream.closed()):
|
|
self.stream.set_close_callback(self._on_connection_close)
|
|
yield self._finish_future
|
|
if self.is_client and self._disconnect_on_finish:
|
|
self.close()
|
|
if self.stream is None:
|
|
raise gen.Return(False)
|
|
except httputil.HTTPInputError as e:
|
|
gen_log.info("Malformed HTTP message from %s: %s",
|
|
self.context, e)
|
|
self.close()
|
|
raise gen.Return(False)
|
|
finally:
|
|
if need_delegate_close:
|
|
with _ExceptionLoggingContext(app_log):
|
|
delegate.on_connection_close()
|
|
self._clear_callbacks()
|
|
raise gen.Return(True)
|
|
|
|
def _clear_callbacks(self):
|
|
"""Clears the callback attributes.
|
|
|
|
This allows the request handler to be garbage collected more
|
|
quickly in CPython by breaking up reference cycles.
|
|
"""
|
|
self._write_callback = None
|
|
self._write_future = None
|
|
self._close_callback = None
|
|
if self.stream is not None:
|
|
self.stream.set_close_callback(None)
|
|
|
|
def set_close_callback(self, callback):
|
|
"""Sets a callback that will be run when the connection is closed.
|
|
|
|
.. deprecated:: 4.0
|
|
Use `.HTTPMessageDelegate.on_connection_close` instead.
|
|
"""
|
|
self._close_callback = stack_context.wrap(callback)
|
|
|
|
def _on_connection_close(self):
|
|
# Note that this callback is only registered on the IOStream
|
|
# when we have finished reading the request and are waiting for
|
|
# the application to produce its response.
|
|
if self._close_callback is not None:
|
|
callback = self._close_callback
|
|
self._close_callback = None
|
|
callback()
|
|
if not self._finish_future.done():
|
|
self._finish_future.set_result(None)
|
|
self._clear_callbacks()
|
|
|
|
def close(self):
|
|
if self.stream is not None:
|
|
self.stream.close()
|
|
self._clear_callbacks()
|
|
if not self._finish_future.done():
|
|
self._finish_future.set_result(None)
|
|
|
|
def detach(self):
|
|
"""Take control of the underlying stream.
|
|
|
|
Returns the underlying `.IOStream` object and stops all further
|
|
HTTP processing. May only be called during
|
|
`.HTTPMessageDelegate.headers_received`. Intended for implementing
|
|
protocols like websockets that tunnel over an HTTP handshake.
|
|
"""
|
|
self._clear_callbacks()
|
|
stream = self.stream
|
|
self.stream = None
|
|
return stream
|
|
|
|
def set_body_timeout(self, timeout):
|
|
"""Sets the body timeout for a single request.
|
|
|
|
Overrides the value from `.HTTP1ConnectionParameters`.
|
|
"""
|
|
self._body_timeout = timeout
|
|
|
|
def set_max_body_size(self, max_body_size):
|
|
"""Sets the body size limit for a single request.
|
|
|
|
Overrides the value from `.HTTP1ConnectionParameters`.
|
|
"""
|
|
self._max_body_size = max_body_size
|
|
|
|
def write_headers(self, start_line, headers, chunk=None, callback=None):
|
|
"""Implements `.HTTPConnection.write_headers`."""
|
|
if self.is_client:
|
|
self._request_start_line = start_line
|
|
# Client requests with a non-empty body must have either a
|
|
# Content-Length or a Transfer-Encoding.
|
|
self._chunking_output = (
|
|
start_line.method in ('POST', 'PUT', 'PATCH') and
|
|
'Content-Length' not in headers and
|
|
'Transfer-Encoding' not in headers)
|
|
else:
|
|
self._response_start_line = start_line
|
|
self._chunking_output = (
|
|
# TODO: should this use
|
|
# self._request_start_line.version or
|
|
# start_line.version?
|
|
self._request_start_line.version == 'HTTP/1.1' and
|
|
# 304 responses have no body (not even a zero-length body), and so
|
|
# should not have either Content-Length or Transfer-Encoding.
|
|
# headers.
|
|
start_line.code != 304 and
|
|
# No need to chunk the output if a Content-Length is specified.
|
|
'Content-Length' not in headers and
|
|
# Applications are discouraged from touching Transfer-Encoding,
|
|
# but if they do, leave it alone.
|
|
'Transfer-Encoding' not in headers)
|
|
# If a 1.0 client asked for keep-alive, add the header.
|
|
if (self._request_start_line.version == 'HTTP/1.0' and
|
|
(self._request_headers.get('Connection', '').lower()
|
|
== 'keep-alive')):
|
|
headers['Connection'] = 'Keep-Alive'
|
|
if self._chunking_output:
|
|
headers['Transfer-Encoding'] = 'chunked'
|
|
if (not self.is_client and
|
|
(self._request_start_line.method == 'HEAD' or
|
|
start_line.code == 304)):
|
|
self._expected_content_remaining = 0
|
|
elif 'Content-Length' in headers:
|
|
self._expected_content_remaining = int(headers['Content-Length'])
|
|
else:
|
|
self._expected_content_remaining = None
|
|
lines = [utf8("%s %s %s" % start_line)]
|
|
lines.extend([utf8(n) + b": " + utf8(v) for n, v in headers.get_all()])
|
|
for line in lines:
|
|
if b'\n' in line:
|
|
raise ValueError('Newline in header: ' + repr(line))
|
|
future = None
|
|
if self.stream.closed():
|
|
future = self._write_future = Future()
|
|
future.set_exception(iostream.StreamClosedError())
|
|
else:
|
|
if callback is not None:
|
|
self._write_callback = stack_context.wrap(callback)
|
|
else:
|
|
future = self._write_future = Future()
|
|
data = b"\r\n".join(lines) + b"\r\n\r\n"
|
|
if chunk:
|
|
data += self._format_chunk(chunk)
|
|
self._pending_write = self.stream.write(data)
|
|
self._pending_write.add_done_callback(self._on_write_complete)
|
|
return future
|
|
|
|
def _format_chunk(self, chunk):
|
|
if self._expected_content_remaining is not None:
|
|
self._expected_content_remaining -= len(chunk)
|
|
if self._expected_content_remaining < 0:
|
|
# Close the stream now to stop further framing errors.
|
|
self.stream.close()
|
|
raise httputil.HTTPOutputError(
|
|
"Tried to write more data than Content-Length")
|
|
if self._chunking_output and chunk:
|
|
# Don't write out empty chunks because that means END-OF-STREAM
|
|
# with chunked encoding
|
|
return utf8("%x" % len(chunk)) + b"\r\n" + chunk + b"\r\n"
|
|
else:
|
|
return chunk
|
|
|
|
def write(self, chunk, callback=None):
|
|
"""Implements `.HTTPConnection.write`.
|
|
|
|
For backwards compatibility is is allowed but deprecated to
|
|
skip `write_headers` and instead call `write()` with a
|
|
pre-encoded header block.
|
|
"""
|
|
future = None
|
|
if self.stream.closed():
|
|
future = self._write_future = Future()
|
|
self._write_future.set_exception(iostream.StreamClosedError())
|
|
else:
|
|
if callback is not None:
|
|
self._write_callback = stack_context.wrap(callback)
|
|
else:
|
|
future = self._write_future = Future()
|
|
self._pending_write = self.stream.write(self._format_chunk(chunk))
|
|
self._pending_write.add_done_callback(self._on_write_complete)
|
|
return future
|
|
|
|
def finish(self):
|
|
"""Implements `.HTTPConnection.finish`."""
|
|
if (self._expected_content_remaining is not None and
|
|
self._expected_content_remaining != 0 and
|
|
not self.stream.closed()):
|
|
self.stream.close()
|
|
raise httputil.HTTPOutputError(
|
|
"Tried to write %d bytes less than Content-Length" %
|
|
self._expected_content_remaining)
|
|
if self._chunking_output:
|
|
if not self.stream.closed():
|
|
self._pending_write = self.stream.write(b"0\r\n\r\n")
|
|
self._pending_write.add_done_callback(self._on_write_complete)
|
|
self._write_finished = True
|
|
# If the app finished the request while we're still reading,
|
|
# divert any remaining data away from the delegate and
|
|
# close the connection when we're done sending our response.
|
|
# Closing the connection is the only way to avoid reading the
|
|
# whole input body.
|
|
if not self._read_finished:
|
|
self._disconnect_on_finish = True
|
|
# No more data is coming, so instruct TCP to send any remaining
|
|
# data immediately instead of waiting for a full packet or ack.
|
|
self.stream.set_nodelay(True)
|
|
if self._pending_write is None:
|
|
self._finish_request(None)
|
|
else:
|
|
self._pending_write.add_done_callback(self._finish_request)
|
|
|
|
def _on_write_complete(self, future):
|
|
if self._write_callback is not None:
|
|
callback = self._write_callback
|
|
self._write_callback = None
|
|
self.stream.io_loop.add_callback(callback)
|
|
if self._write_future is not None:
|
|
future = self._write_future
|
|
self._write_future = None
|
|
future.set_result(None)
|
|
|
|
def _can_keep_alive(self, start_line, headers):
|
|
if self.params.no_keep_alive:
|
|
return False
|
|
connection_header = headers.get("Connection")
|
|
if connection_header is not None:
|
|
connection_header = connection_header.lower()
|
|
if start_line.version == "HTTP/1.1":
|
|
return connection_header != "close"
|
|
elif ("Content-Length" in headers
|
|
or start_line.method in ("HEAD", "GET")):
|
|
return connection_header == "keep-alive"
|
|
return False
|
|
|
|
def _finish_request(self, future):
|
|
self._clear_callbacks()
|
|
if not self.is_client and self._disconnect_on_finish:
|
|
self.close()
|
|
return
|
|
# Turn Nagle's algorithm back on, leaving the stream in its
|
|
# default state for the next request.
|
|
self.stream.set_nodelay(False)
|
|
if not self._finish_future.done():
|
|
self._finish_future.set_result(None)
|
|
|
|
def _parse_headers(self, data):
|
|
data = native_str(data.decode('latin1'))
|
|
eol = data.find("\r\n")
|
|
start_line = data[:eol]
|
|
try:
|
|
headers = httputil.HTTPHeaders.parse(data[eol:])
|
|
except ValueError:
|
|
# probably form split() if there was no ':' in the line
|
|
raise httputil.HTTPInputError("Malformed HTTP headers: %r" %
|
|
data[eol:100])
|
|
return start_line, headers
|
|
|
|
def _read_body(self, headers, delegate):
|
|
content_length = headers.get("Content-Length")
|
|
if content_length:
|
|
content_length = int(content_length)
|
|
if content_length > self._max_body_size:
|
|
raise httputil.HTTPInputError("Content-Length too long")
|
|
return self._read_fixed_body(content_length, delegate)
|
|
if headers.get("Transfer-Encoding") == "chunked":
|
|
return self._read_chunked_body(delegate)
|
|
if self.is_client:
|
|
return self._read_body_until_close(delegate)
|
|
return None
|
|
|
|
@gen.coroutine
|
|
def _read_fixed_body(self, content_length, delegate):
|
|
while content_length > 0:
|
|
body = yield self.stream.read_bytes(
|
|
min(self.params.chunk_size, content_length), partial=True)
|
|
content_length -= len(body)
|
|
if not self._write_finished or self.is_client:
|
|
with _ExceptionLoggingContext(app_log):
|
|
yield gen.maybe_future(delegate.data_received(body))
|
|
|
|
@gen.coroutine
|
|
def _read_chunked_body(self, delegate):
|
|
# TODO: "chunk extensions" http://tools.ietf.org/html/rfc2616#section-3.6.1
|
|
total_size = 0
|
|
while True:
|
|
chunk_len = yield self.stream.read_until(b"\r\n", max_bytes=64)
|
|
chunk_len = int(chunk_len.strip(), 16)
|
|
if chunk_len == 0:
|
|
return
|
|
total_size += chunk_len
|
|
if total_size > self._max_body_size:
|
|
raise httputil.HTTPInputError("chunked body too large")
|
|
bytes_to_read = chunk_len
|
|
while bytes_to_read:
|
|
chunk = yield self.stream.read_bytes(
|
|
min(bytes_to_read, self.params.chunk_size), partial=True)
|
|
bytes_to_read -= len(chunk)
|
|
if not self._write_finished or self.is_client:
|
|
with _ExceptionLoggingContext(app_log):
|
|
yield gen.maybe_future(delegate.data_received(chunk))
|
|
# chunk ends with \r\n
|
|
crlf = yield self.stream.read_bytes(2)
|
|
assert crlf == b"\r\n"
|
|
|
|
@gen.coroutine
|
|
def _read_body_until_close(self, delegate):
|
|
body = yield self.stream.read_until_close()
|
|
if not self._write_finished or self.is_client:
|
|
with _ExceptionLoggingContext(app_log):
|
|
delegate.data_received(body)
|
|
|
|
|
|
class _GzipMessageDelegate(httputil.HTTPMessageDelegate):
|
|
"""Wraps an `HTTPMessageDelegate` to decode ``Content-Encoding: gzip``.
|
|
"""
|
|
def __init__(self, delegate, chunk_size):
|
|
self._delegate = delegate
|
|
self._chunk_size = chunk_size
|
|
self._decompressor = None
|
|
|
|
def headers_received(self, start_line, headers):
|
|
if headers.get("Content-Encoding") == "gzip":
|
|
self._decompressor = GzipDecompressor()
|
|
# Downstream delegates will only see uncompressed data,
|
|
# so rename the content-encoding header.
|
|
# (but note that curl_httpclient doesn't do this).
|
|
headers.add("X-Consumed-Content-Encoding",
|
|
headers["Content-Encoding"])
|
|
del headers["Content-Encoding"]
|
|
return self._delegate.headers_received(start_line, headers)
|
|
|
|
@gen.coroutine
|
|
def data_received(self, chunk):
|
|
if self._decompressor:
|
|
compressed_data = chunk
|
|
while compressed_data:
|
|
decompressed = self._decompressor.decompress(
|
|
compressed_data, self._chunk_size)
|
|
if decompressed:
|
|
yield gen.maybe_future(
|
|
self._delegate.data_received(decompressed))
|
|
compressed_data = self._decompressor.unconsumed_tail
|
|
else:
|
|
yield gen.maybe_future(self._delegate.data_received(chunk))
|
|
|
|
def finish(self):
|
|
if self._decompressor is not None:
|
|
tail = self._decompressor.flush()
|
|
if tail:
|
|
# I believe the tail will always be empty (i.e.
|
|
# decompress will return all it can). The purpose
|
|
# of the flush call is to detect errors such
|
|
# as truncated input. But in case it ever returns
|
|
# anything, treat it as an extra chunk
|
|
self._delegate.data_received(tail)
|
|
return self._delegate.finish()
|
|
|
|
|
|
class HTTP1ServerConnection(object):
|
|
"""An HTTP/1.x server."""
|
|
def __init__(self, stream, params=None, context=None):
|
|
"""
|
|
:arg stream: an `.IOStream`
|
|
:arg params: a `.HTTP1ConnectionParameters` or None
|
|
:arg context: an opaque application-defined object that is accessible
|
|
as ``connection.context``
|
|
"""
|
|
self.stream = stream
|
|
if params is None:
|
|
params = HTTP1ConnectionParameters()
|
|
self.params = params
|
|
self.context = context
|
|
self._serving_future = None
|
|
|
|
@gen.coroutine
|
|
def close(self):
|
|
"""Closes the connection.
|
|
|
|
Returns a `.Future` that resolves after the serving loop has exited.
|
|
"""
|
|
self.stream.close()
|
|
# Block until the serving loop is done, but ignore any exceptions
|
|
# (start_serving is already responsible for logging them).
|
|
try:
|
|
yield self._serving_future
|
|
except Exception:
|
|
pass
|
|
|
|
def start_serving(self, delegate):
|
|
"""Starts serving requests on this connection.
|
|
|
|
:arg delegate: a `.HTTPServerConnectionDelegate`
|
|
"""
|
|
assert isinstance(delegate, httputil.HTTPServerConnectionDelegate)
|
|
self._serving_future = self._server_request_loop(delegate)
|
|
# Register the future on the IOLoop so its errors get logged.
|
|
self.stream.io_loop.add_future(self._serving_future,
|
|
lambda f: f.result())
|
|
|
|
@gen.coroutine
|
|
def _server_request_loop(self, delegate):
|
|
try:
|
|
while True:
|
|
conn = HTTP1Connection(self.stream, False,
|
|
self.params, self.context)
|
|
request_delegate = delegate.start_request(self, conn)
|
|
try:
|
|
ret = yield conn.read_response(request_delegate)
|
|
except (iostream.StreamClosedError,
|
|
iostream.UnsatisfiableReadError):
|
|
return
|
|
except _QuietException:
|
|
# This exception was already logged.
|
|
conn.close()
|
|
return
|
|
except Exception:
|
|
gen_log.error("Uncaught exception", exc_info=True)
|
|
conn.close()
|
|
return
|
|
if not ret:
|
|
return
|
|
yield gen.moment
|
|
finally:
|
|
delegate.on_close(self)
|