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| author | Alexandre Flament <alex@al-f.net> | 2021-04-05 10:43:33 +0200 |
|---|---|---|
| committer | Alexandre Flament <alex@al-f.net> | 2021-04-12 17:25:56 +0200 |
| commit | d14994dc73ba5c95382812581dac146d9eceaafa (patch) | |
| tree | 2f7720dbae8f1064fe479f986f0b198aff2beb99 | |
| parent | eaa694fb7d0e47b943bc6d6edb6cb6a40ab2d85e (diff) | |
| download | searxng-d14994dc73ba5c95382812581dac146d9eceaafa.tar.gz searxng-d14994dc73ba5c95382812581dac146d9eceaafa.zip | |
[httpx] replace searx.poolrequests by searx.network
settings.yml:
* outgoing.networks:
* can contains network definition
* propertiers: enable_http, verify, http2, max_connections, max_keepalive_connections,
keepalive_expiry, local_addresses, support_ipv4, support_ipv6, proxies, max_redirects, retries
* retries: 0 by default, number of times searx retries to send the HTTP request (using different IP & proxy each time)
* local_addresses can be "192.168.0.1/24" (it supports IPv6)
* support_ipv4 & support_ipv6: both True by default
see https://github.com/searx/searx/pull/1034
* each engine can define a "network" section:
* either a full network description
* either reference an existing network
* all HTTP requests of engine use the same HTTP configuration (it was not the case before, see proxy configuration in master)
31 files changed, 1036 insertions, 677 deletions
diff --git a/docs/admin/settings.rst b/docs/admin/settings.rst index 7cf055dbf..622218279 100644 --- a/docs/admin/settings.rst +++ b/docs/admin/settings.rst @@ -130,14 +130,12 @@ Global Settings request_timeout : 2.0 # default timeout in seconds, can be override by engine # max_request_timeout: 10.0 # the maximum timeout in seconds useragent_suffix : "" # informations like an email address to the administrator - pool_connections : 100 # Number of different hosts - pool_maxsize : 10 # Number of simultaneous requests by host + pool_connections : 100 # Maximum number of allowable connections, or None for no limits. The default is 100. + pool_maxsize : 10 # Number of allowable keep-alive connections, or None to always allow. The default is 10. + enable_http2: True # See https://www.python-httpx.org/http2/ # uncomment below section if you want to use a proxy # proxies: - # http: - # - http://proxy1:8080 - # - http://proxy2:8080 - # https: + # all://: # - http://proxy1:8080 # - http://proxy2:8080 # uncomment below section only if you have more than one network interface @@ -145,6 +143,7 @@ Global Settings # source_ips: # - 1.1.1.1 # - 1.1.1.2 + # - fe80::/126 ``request_timeout`` : @@ -157,20 +156,46 @@ Global Settings Suffix to the user-agent searx uses to send requests to others engines. If an engine wish to block you, a contact info here may be useful to avoid that. -.. _requests proxies: https://requests.readthedocs.io/en/latest/user/advanced/#proxies -.. _PySocks: https://pypi.org/project/PySocks/ +``keepalive_expiry``: + Number of seconds to keep a connection in the pool. By default 5.0 seconds. + +.. _httpx proxies: https://www.python-httpx.org/advanced/#http-proxying ``proxies`` : - Define one or more proxies you wish to use, see `requests proxies`_. + Define one or more proxies you wish to use, see `httpx proxies`_. If there are more than one proxy for one protocol (http, https), requests to the engines are distributed in a round-robin fashion. - - Proxy: `see <https://2.python-requests.org/en/latest/user/advanced/#proxies>`__. - - SOCKS proxies are also supported: `see <https://2.python-requests.org/en/latest/user/advanced/#socks>`__ - ``source_ips`` : If you use multiple network interfaces, define from which IP the requests must - be made. This parameter is ignored when ``proxies`` is set. + be made. Example: + + * ``0.0.0.0`` any local IPv4 address. + * ``::`` any local IPv6 address. + * ``192.168.0.1`` + * ``[ 192.168.0.1, 192.168.0.2 ]`` these two specific IP addresses + * ``fe80::60a2:1691:e5a2:ee1f`` + * ``fe80::60a2:1691:e5a2:ee1f/126`` all IP addresses in this network. + * ``[ 192.168.0.1, fe80::/126 ]`` + +``retries`` : + Number of retry in case of an HTTP error. + On each retry, searx uses an different proxy and source ip. + +``retry_on_http_error`` : + Retry request on some HTTP status code. + + Example: + + * ``true`` : on HTTP status code between 400 and 599. + * ``403`` : on HTTP status code 403. + * ``[403, 429]``: on HTTP status code 403 and 429. + +``enable_http2`` : + Enable by default. Set to ``False`` to disable HTTP/2. + +``max_redirects`` : + 30 by default. Maximum redirect before it is an error. ``locales:`` @@ -216,6 +241,13 @@ Engine settings api_key : 'apikey' disabled : True language : en_US + #enable_http: False + #enable_http2: False + #retries: 1 + #retry_on_http_error: True # or 403 or [404, 429] + #max_connections: 100 + #max_keepalive_connections: 10 + #keepalive_expiry: 5.0 #proxies: # http: # - http://proxy1:8080 @@ -270,6 +302,12 @@ Engine settings ``display_error_messages`` : default ``True`` When an engine returns an error, the message is displayed on the user interface. +``network``: optional + Use the network configuration from another engine. + In addition, there are two default networks: + * ``ipv4`` set ``local_addresses`` to ``0.0.0.0`` (use only IPv4 local addresses) + * ``ipv6`` set ``local_addresses`` to ``::`` (use only IPv6 local addresses) + .. note:: A few more options are possible, but they are pretty specific to some diff --git a/requirements-dev.txt b/requirements-dev.txt index 2fad45f14..924972a51 100644 --- a/requirements-dev.txt +++ b/requirements-dev.txt @@ -16,3 +16,4 @@ sphinx-tabs==2.1.0 sphinxcontrib-programoutput==0.17 sphinx-autobuild==2021.3.14 linuxdoc==20210324 +aiounittest==1.4.0 diff --git a/searx/autocomplete.py b/searx/autocomplete.py index 1fe3afac7..cf2deb62f 100644 --- a/searx/autocomplete.py +++ b/searx/autocomplete.py @@ -24,7 +24,7 @@ from httpx import HTTPError from searx import settings -from searx.poolrequests import get as http_get +from searx.network import get as http_get from searx.exceptions import SearxEngineResponseException diff --git a/searx/engines/__init__.py b/searx/engines/__init__.py index 2238ea1b9..95eda6dde 100644 --- a/searx/engines/__init__.py +++ b/searx/engines/__init__.py @@ -27,7 +27,7 @@ from searx import settings from searx import logger from searx.data import ENGINES_LANGUAGES from searx.exceptions import SearxEngineResponseException -from searx.poolrequests import get, get_proxy_cycles +from searx.network import get, initialize as initialize_network, set_context_network_name from searx.utils import load_module, match_language, get_engine_from_settings, gen_useragent @@ -89,8 +89,6 @@ def load_engine(engine_data): engine.categories = [] else: engine.categories = list(map(str.strip, param_value.split(','))) - elif param_name == 'proxies': - engine.proxies = get_proxy_cycles(param_value) else: setattr(engine, param_name, param_value) @@ -289,9 +287,11 @@ def load_engines(engine_list): def initialize_engines(engine_list): load_engines(engine_list) + initialize_network(engine_list, settings['outgoing']) def engine_init(engine_name, init_fn): try: + set_context_network_name(engine_name) init_fn(get_engine_from_settings(engine_name)) except SearxEngineResponseException as exc: logger.warn('%s engine: Fail to initialize // %s', engine_name, exc) diff --git a/searx/engines/duckduckgo.py b/searx/engines/duckduckgo.py index ae1e36686..3c086f81b 100644 --- a/searx/engines/duckduckgo.py +++ b/searx/engines/duckduckgo.py @@ -6,7 +6,7 @@ from lxml.html import fromstring from json import loads from searx.utils import extract_text, match_language, eval_xpath, dict_subset -from searx.poolrequests import get +from searx.network import get # about about = { diff --git a/searx/engines/duckduckgo_images.py b/searx/engines/duckduckgo_images.py index 305eb1ca1..0daaf41e9 100644 --- a/searx/engines/duckduckgo_images.py +++ b/searx/engines/duckduckgo_images.py @@ -8,7 +8,7 @@ from urllib.parse import urlencode from searx.exceptions import SearxEngineAPIException from searx.engines.duckduckgo import get_region_code from searx.engines.duckduckgo import _fetch_supported_languages, supported_languages_url # NOQA # pylint: disable=unused-import -from searx.poolrequests import get +from searx.network import get # about about = { diff --git a/searx/engines/gigablast.py b/searx/engines/gigablast.py index 248991df9..bbd9e20d2 100644 --- a/searx/engines/gigablast.py +++ b/searx/engines/gigablast.py @@ -8,7 +8,7 @@ import re from json import loads from urllib.parse import urlencode # from searx import logger -from searx.poolrequests import get +from searx.network import get # about about = { diff --git a/searx/engines/pubmed.py b/searx/engines/pubmed.py index da02f91ca..5d88d398e 100644 --- a/searx/engines/pubmed.py +++ b/searx/engines/pubmed.py @@ -7,7 +7,7 @@ from flask_babel import gettext from lxml import etree from datetime import datetime from urllib.parse import urlencode -from searx.poolrequests import get +from searx.network import get # about about = { diff --git a/searx/engines/qwant.py b/searx/engines/qwant.py index 13dcf1250..d01dc0acc 100644 --- a/searx/engines/qwant.py +++ b/searx/engines/qwant.py @@ -8,7 +8,7 @@ from json import loads from urllib.parse import urlencode from searx.utils import html_to_text, match_language from searx.exceptions import SearxEngineAPIException, SearxEngineCaptchaException -from searx.raise_for_httperror import raise_for_httperror +from searx.network import raise_for_httperror # about about = { diff --git a/searx/engines/seznam.py b/searx/engines/seznam.py index c058ebb76..042088dbe 100644 --- a/searx/engines/seznam.py +++ b/searx/engines/seznam.py @@ -5,7 +5,7 @@ from urllib.parse import urlencode from lxml import html -from searx.poolrequests import get +from searx.network import get from searx.exceptions import SearxEngineAccessDeniedException from searx.utils import ( extract_text, diff --git a/searx/engines/soundcloud.py b/searx/engines/soundcloud.py index b3e3383bd..a6f923855 100644 --- a/searx/engines/soundcloud.py +++ b/searx/engines/soundcloud.py @@ -9,7 +9,7 @@ from lxml import html from dateutil import parser from urllib.parse import quote_plus, urlencode from searx import logger -from searx.poolrequests import get as http_get +from searx.network import get as http_get # about about = { diff --git a/searx/engines/spotify.py b/searx/engines/spotify.py index fbabec0bb..6816fe672 100644 --- a/searx/engines/spotify.py +++ b/searx/engines/spotify.py @@ -5,9 +5,10 @@ from json import loads from urllib.parse import urlencode -import searx.poolrequests as requests import base64 +from searx.network import post as http_post + # about about = { "website": 'https://www.spotify.com', @@ -38,7 +39,7 @@ def request(query, params): params['url'] = search_url.format(query=urlencode({'q': query}), offset=offset) - r = requests.post( + r = http_post( 'https://accounts.spotify.com/api/token', data={'grant_type': 'client_credentials'}, headers={'Authorization': 'Basic ' + base64.b64encode( diff --git a/searx/engines/wikidata.py b/searx/engines/wikidata.py index c8e4cfae6..ddcce9085 100644 --- a/searx/engines/wikidata.py +++ b/searx/engines/wikidata.py @@ -12,7 +12,7 @@ from babel.dates import format_datetime, format_date, format_time, get_datetime_ from searx import logger from searx.data import WIKIDATA_UNITS -from searx.poolrequests import post, get +from searx.network import post, get from searx.utils import match_language, searx_useragent, get_string_replaces_function from searx.external_urls import get_external_url, get_earth_coordinates_url, area_to_osm_zoom from searx.engines.wikipedia import _fetch_supported_languages, supported_languages_url # NOQA # pylint: disable=unused-import diff --git a/searx/engines/wikipedia.py b/searx/engines/wikipedia.py index 3ad8748fb..5e34db9a7 100644 --- a/searx/engines/wikipedia.py +++ b/searx/engines/wikipedia.py @@ -7,7 +7,7 @@ from urllib.parse import quote from json import loads from lxml.html import fromstring from searx.utils import match_language, searx_useragent -from searx.raise_for_httperror import raise_for_httperror +from searx.network import raise_for_httperror # about about = { diff --git a/searx/engines/wolframalpha_noapi.py b/searx/engines/wolframalpha_noapi.py index 8e427d575..1f2cfa4e6 100644 --- a/searx/engines/wolframalpha_noapi.py +++ b/searx/engines/wolframalpha_noapi.py @@ -7,7 +7,7 @@ from json import loads from time import time from urllib.parse import urlencode -from searx.poolrequests import get as http_get +from searx.network import get as http_get # about about = { diff --git a/searx/engines/wordnik.py b/searx/engines/wordnik.py index 3abe9efa2..4bfeb4070 100644 --- a/searx/engines/wordnik.py +++ b/searx/engines/wordnik.py @@ -6,7 +6,7 @@ from lxml.html import fromstring from searx import logger from searx.utils import extract_text -from searx.raise_for_httperror import raise_for_httperror +from searx.network import raise_for_httperror logger = logger.getChild('Wordnik engine') diff --git a/searx/engines/yggtorrent.py b/searx/engines/yggtorrent.py index 8dfc0a0f2..f5af91f46 100644 --- a/searx/engines/yggtorrent.py +++ b/searx/engines/yggtorrent.py @@ -8,7 +8,7 @@ from operator import itemgetter from datetime import datetime from urllib.parse import quote from searx.utils import extract_text, get_torrent_size -from searx.poolrequests import get as http_get +from searx.network import get as http_get # about about = { diff --git a/searx/network/__init__.py b/searx/network/__init__.py new file mode 100644 index 000000000..dbd31c781 --- /dev/null +++ b/searx/network/__init__.py @@ -0,0 +1,189 @@ +# SPDX-License-Identifier: AGPL-3.0-or-later + +import asyncio +import threading +import concurrent.futures +from time import time + +import httpx +import h2.exceptions + +from .network import get_network, initialize +from .client import LOOP +from .raise_for_httperror import raise_for_httperror + +# queue.SimpleQueue: Support Python 3.6 +try: + from queue import SimpleQueue +except ImportError: + from queue import Empty + from collections import deque + + class SimpleQueue: + """Minimal backport of queue.SimpleQueue""" + + def __init__(self): + self._queue = deque() + self._count = threading.Semaphore(0) + + def put(self, item): + self._queue.append(item) + self._count.release() + + def get(self): + if not self._count.acquire(True): + raise Empty + return self._queue.popleft() + + +THREADLOCAL = threading.local() + + +def reset_time_for_thread(): + THREADLOCAL.total_time = 0 + + +def get_time_for_thread(): + return THREADLOCAL.total_time + + +def set_timeout_for_thread(timeout, start_time=None): + THREADLOCAL.timeout = timeout + THREADLOCAL.start_time = start_time + + +def set_context_network_name(network_name): + THREADLOCAL.network = get_network(network_name) + + +def get_context_network(): + try: + return THREADLOCAL.network + except AttributeError: + return get_network() + + +def request(method, url, **kwargs): + """same as requests/requests/api.py request(...)""" + time_before_request = time() + + # timeout (httpx) + if 'timeout' in kwargs: + timeout = kwargs['timeout'] + else: + timeout = getattr(THREADLOCAL, 'timeout', None) + if timeout is not None: + kwargs['timeout'] = timeout + + # 2 minutes timeout for the requests without timeout + timeout = timeout or 120 + + # ajdust actual timeout + timeout += 0.2 # overhead + start_time = getattr(THREADLOCAL, 'start_time', time_before_request) + if start_time: + timeout -= time() - start_time + + # raise_for_error + check_for_httperror = True + if 'raise_for_httperror' in kwargs: + check_for_httperror = kwargs['raise_for_httperror'] + del kwargs['raise_for_httperror'] + + # requests compatibility + if isinstance(url, bytes): + url = url.decode() + + # network + network = get_context_network() + + # do request + future = asyncio.run_coroutine_threadsafe(network.request(method, url, **kwargs), LOOP) + try: + response = future.result(timeout) + except concurrent.futures.TimeoutError as e: + raise httpx.TimeoutException('Timeout', request=None) from e + + # requests compatibility + # see also https://www.python-httpx.org/compatibility/#checking-for-4xx5xx-responses + response.ok = not response.is_error + + # update total_time. + # See get_time_for_thread() and reset_time_for_thread() + if hasattr(THREADLOCAL, 'total_time'): + time_after_request = time() + THREADLOCAL.total_time += time_after_request - time_before_request + + # raise an exception + if check_for_httperror: + raise_for_httperror(response) + + return response + + +def get(url, **kwargs): + kwargs.setdefault('allow_redirects', True) + return request('get', url, **kwargs) + + +def options(url, **kwargs): + kwargs.setdefault('allow_redirects', True) + return request('options', url, **kwargs) + + +def head(url, **kwargs): + kwargs.setdefault('allow_redirects', False) + return request('head', url, **kwargs) + + +def post(url, data=None, **kwargs): + return request('post', url, data=data, **kwargs) + + +def put(url, data=None, **kwargs): + return request('put', url, data=data, **kwargs) + + +def patch(url, data=None, **kwargs): + return request('patch', url, data=data, **kwargs) + + +def delete(url, **kwargs): + return request('delete', url, **kwargs) + + +async def stream_chunk_to_queue(network, q, method, url, **kwargs): + try: + async with network.stream(method, url, **kwargs) as response: + q.put(response) + async for chunk in response.aiter_bytes(65536): + if len(chunk) > 0: + q.put(chunk) + except (httpx.HTTPError, OSError, h2.exceptions.ProtocolError) as e: + q.put(e) + finally: + q.put(None) + + +def stream(method, url, **kwargs): + """Replace httpx.stream. + + Usage: + stream = poolrequests.stream(...) + response = next(stream) + for chunk in stream: + ... + + httpx.Client.stream requires to write the httpx.HTTPTransport version of the + the httpx.AsyncHTTPTransport declared above. + """ + q = SimpleQueue() + future = asyncio.run_coroutine_threadsafe(stream_chunk_to_queue(get_network(), q, method, url, **kwargs), + LOOP) + chunk_or_exception = q.get() + while chunk_or_exception is not None: + if isinstance(chunk_or_exception, Exception): + raise chunk_or_exception + yield chunk_or_exception + chunk_or_exception = q.get() + return future.result() diff --git a/searx/network/client.py b/searx/network/client.py new file mode 100644 index 000000000..631e36f8f --- /dev/null +++ b/searx/network/client.py @@ -0,0 +1,214 @@ +# SPDX-License-Identifier: AGPL-3.0-or-later + +import asyncio +import logging +import threading + +import httpcore +import httpx +from httpx_socks import AsyncProxyTransport +from python_socks import parse_proxy_url +import python_socks._errors + +from searx import logger + +# Optional uvloop (support Python 3.6) +try: + import uvloop +except ImportError: + pass +else: + uvloop.install() + + +logger = logger.getChild('searx.http.client') +LOOP = None +TRANSPORT_KWARGS = { + 'backend': 'asyncio', + 'trust_env': False, +} + + +async def close_connections_for_url(connection_pool: httpcore.AsyncConnectionPool, url: httpcore._utils.URL): + origin = httpcore._utils.url_to_origin(url) + logger.debug('Drop connections for %r', origin) + connections_to_close = connection_pool._connections_for_origin(origin) + for connection in connections_to_close: + await connection_pool._remove_from_pool(connection) + try: + await connection.aclose() + except httpcore.NetworkError as e: + logger.warning('Error closing an existing connection', exc_info=e) + + +class AsyncHTTPTransportNoHttp(httpcore.AsyncHTTPTransport): + """Block HTTP request""" + + async def arequest(self, method, url, headers=None, stream=None, ext=None): + raise httpcore.UnsupportedProtocol("HTTP protocol is disabled") + + +class AsyncProxyTransportFixed(AsyncProxyTransport): + """Fix httpx_socks.AsyncProxyTransport + + Map python_socks exceptions to httpcore.ProxyError + + Map socket.gaierror to httpcore.ConnectError + + Note: keepalive_expiry is ignored, AsyncProxyTransport should call: + * self._keepalive_sweep() + * self._response_closed(self, connection) + + Note: AsyncProxyTransport inherit from AsyncConnectionPool + + Note: the API is going to change on httpx 0.18.0 + see https://github.com/encode/httpx/pull/1522 + """ + + async def arequest(self, method, url, headers=None, stream=None, ext=None): + retry = 2 + while retry > 0: + retry -= 1 + try: + return await super().arequest(method, url, headers, stream, ext) + except (python_socks._errors.ProxyConnectionError, + python_socks._errors.ProxyTimeoutError, + python_socks._errors.ProxyError) as e: + raise httpcore.ProxyError(e) + except OSError as e: + # socket.gaierror when DNS resolution fails + raise httpcore.NetworkError(e) + except httpcore.RemoteProtocolError as e: + # in case of httpcore.RemoteProtocolError: Server disconnected + await close_connections_for_url(self, url) + logger.warning('httpcore.RemoteProtocolError: retry', exc_info=e) + # retry + except (httpcore.NetworkError, httpcore.ProtocolError) as e: + # httpcore.WriteError on HTTP/2 connection leaves a new opened stream + # then each new request creates a new stream and raise the same WriteError + await close_connections_for_url(self, url) + raise e + + +class AsyncHTTPTransportFixed(httpx.AsyncHTTPTransport): + """Fix httpx.AsyncHTTPTransport""" + + async def arequest(self, method, url, headers=None, stream=None, ext=None): + retry = 2 + while retry > 0: + retry -= 1 + try: + return await super().arequest(method, url, headers, stream, ext) + except OSError as e: + # socket.gaierror when DNS resolution fails + raise httpcore.ConnectError(e) + except httpcore.CloseError as e: + # httpcore.CloseError: [Errno 104] Connection reset by peer + # raised by _keepalive_sweep() + # from https://github.com/encode/httpcore/blob/4b662b5c42378a61e54d673b4c949420102379f5/httpcore/_backends/asyncio.py#L198 # noqa + await close_connections_for_url(self._pool, url) + logger.warning('httpcore.CloseError: retry', exc_info=e) + # retry + except httpcore.RemoteProtocolError as e: + # in case of httpcore.RemoteProtocolError: Server disconnected + await close_connections_for_url(self._pool, url) + logger.warning('httpcore.RemoteProtocolError: retry', exc_info=e) + # retry + except (httpcore.ProtocolError, httpcore.NetworkError) as e: + await close_connections_for_url(self._pool, url) + raise e + + +def get_transport_for_socks_proxy(verify, http2, local_address, proxy_url, limit, retries): + global LOOP, TRANSPORT_KWARGS + # support socks5h (requests compatibility): + # https://requests.readthedocs.io/en/master/user/advanced/#socks + # socks5:// hostname is resolved on client side + # socks5h:// hostname is resolved on proxy side + rdns = False + socks5h = 'socks5h://' + if proxy_url.startswith(socks5h): + proxy_url = 'socks5://' + proxy_url[len(socks5h):] + rdns = True + + proxy_type, proxy_host, proxy_port, proxy_username, proxy_password = parse_proxy_url(proxy_url) + + return AsyncProxyTransportFixed(proxy_type=proxy_type, proxy_host=proxy_host, proxy_port=proxy_port, + username=proxy_username, password=proxy_password, + rdns=rdns, + loop=LOOP, + verify=verify, + http2=http2, + local_address=local_address, + max_connections=limit.max_connections, + max_keepalive_connections=limit.max_keepalive_connections, + keepalive_expiry=limit.keepalive_expiry, + retries=retries, + **TRANSPORT_KWARGS) + + +def get_transport(verify, http2, local_address, proxy_url, limit, retries): + return AsyncHTTPTransportFixed(verify=verify, + http2=http2, + local_address=local_address, + proxy=httpx._config.Proxy(proxy_url) if proxy_url else None, + limits=limit, + retries=retries, + **TRANSPORT_KWARGS) + + +def iter_proxies(proxies): + # https://www.python-httpx.org/compatibility/#proxy-keys + if isinstance(proxies, str): + yield 'all://', proxies + elif isinstance(proxies, dict): + for pattern, proxy_url in proxies.items(): + yield pattern, proxy_url + + +def new_client(enable_http, verify, enable_http2, + max_connections, max_keepalive_connections, keepalive_expiry, + proxies, local_address, retries, max_redirects): + limit = httpx.Limits(max_connections=max_connections, + max_keepalive_connections=max_keepalive_connections, + keepalive_expiry=keepalive_expiry) + # See https://www.python-httpx.org/advanced/#routing + mounts = {} + for pattern, proxy_url in iter_proxies(proxies): + if not enable_http and (pattern == 'http' or pattern.startswith('http://')): + continue + if proxy_url.startswith('socks4://') \ + or proxy_url.startswith('socks5://') \ + or proxy_url.startswith('socks5h://'): + mounts[pattern] = get_transport_for_socks_proxy(verify, enable_http2, local_address, proxy_url, limit, + retries) + else: + mounts[pattern] = get_transport(verify, enable_http2, local_address, proxy_url, limit, retries) + + if not enable_http: + mounts['http://'] = AsyncHTTPTransportNoHttp() + + transport = get_transport(verify, enable_http2, local_address, None, limit, retries) + return httpx.AsyncClient(transport=transport, mounts=mounts, max_redirects=max_redirects) + + +def init(): + # log + for logger_name in ('hpack.hpack', 'hpack.table'): + logging.getLogger(logger_name).setLevel(logging.WARNING) + + # loop + def loop_thread(): + global LOOP + LOOP = asyncio.new_event_loop() + LOOP.run_forever() + + th = threading.Thread( + target=loop_thread, + name='asyncio_loop', + daemon=True, + ) + th.start() + + +init() diff --git a/searx/network/network.py b/searx/network/network.py new file mode 100644 index 000000000..f50acf595 --- /dev/null +++ b/searx/network/network.py @@ -0,0 +1,302 @@ +# SPDX-License-Identifier: AGPL-3.0-or-later + +import atexit +import asyncio +import ipaddress +from itertools import cycle + +import httpx + +from .client import new_client, LOOP + + +DEFAULT_NAME = '__DEFAULT__' +NETWORKS = {} +# requests compatibility when reading proxy settings from settings.yml +PROXY_PATTERN_MAPPING = { + 'http': 'http://', + 'https': 'https://', + 'socks4': 'socks4://', + 'socks5': 'socks5://', + 'socks5h': 'socks5h://', + 'http:': 'http://', + 'https:': 'https://', + 'socks4:': 'socks4://', + 'socks5:': 'socks5://', + 'socks5h:': 'socks5h://', +} + +ADDRESS_MAPPING = { + 'ipv4': '0.0.0.0', + 'ipv6': '::' +} + + +class Network: + + __slots__ = ('enable_http', 'verify', 'enable_http2', + 'max_connections', 'max_keepalive_connections', 'keepalive_expiry', + 'local_addresses', 'proxies', 'max_redirects', 'retries', 'retry_on_http_error', + '_local_addresses_cycle', '_proxies_cycle', '_clients') + + def __init__(self, + enable_http=True, + verify=True, + enable_http2=False, + max_connections=None, + max_keepalive_connections=None, + keepalive_expiry=None, + proxies=None, + local_addresses=None, + retries=0, + retry_on_http_error=None, + max_redirects=30): + self.enable_http = enable_http + self.verify = verify + self.enable_http2 = enable_http2 + self.max_connections = max_connections + self.max_keepalive_connections = max_keepalive_connections + self.keepalive_expiry = keepalive_expiry + self.proxies = proxies + self.local_addresses = local_addresses + self.retries = retries + self.retry_on_http_error = retry_on_http_error + self.max_redirects = max_redirects + self._local_addresses_cycle = self.get_ipaddress_cycle() + self._proxies_cycle = self.get_proxy_cycles() + self._clients = {} + self.check_parameters() + + def check_parameters(self): + for address in self.iter_ipaddresses(): + if '/' in address: + ipaddress.ip_network(address, False) + else: + ipaddress.ip_address(address) + + if self.proxies is not None and not isinstance(self.proxies, (str, dict)): + raise ValueError('proxies type has to be str, dict or None') + + def iter_ipaddresses(self): + local_addresses = self.local_addresses + if not local_addresses: + return + elif isinstance(local_addresses, str): + local_addresses = [local_addresses] + for address in local_addresses: + yield address + + def get_ipaddress_cycle(self): + while True: + count = 0 + for address in self.iter_ipaddresses(): + if '/' in address: + for a in ipaddress.ip_network(address, False).hosts(): + yield str(a) + count += 1 + else: + a = ipaddress.ip_address(address) + yield str(a) + count += 1 + if count == 0: + yield None + + def iter_proxies(self): + if not self.proxies: + return + # https://www.python-httpx.org/compatibility/#proxy-keys + if isinstance(self.proxies, str): + yield 'all://', [self.proxies] + else: + for pattern, proxy_url in self.proxies.items(): + pattern = PROXY_PATTERN_MAPPING.get(pattern, pattern) + if isinstance(proxy_url, str): + proxy_url = [proxy_url] + yield pattern, proxy_url + + def get_proxy_cycles(self): + proxy_settings = {} + for pattern, proxy_urls in self.iter_proxies(): + proxy_settings[pattern] = cycle(proxy_urls) + while True: + yield tuple((pattern, next(proxy_url_cycle)) for pattern, proxy_url_cycle in proxy_settings.items()) + + def get_client(self, verify=None, max_redirects=None): + verify = self.verify if verify is None else verify + max_redirects = self.max_redirects if max_redirects is None else max_redirects + local_address = next(self._local_addresses_cycle) + proxies = next(self._proxies_cycle) # is a tuple so it can be part of the key + key = (verify, max_redirects, local_address, proxies) + if key not in self._clients or self._clients[key].is_closed: + self._clients[key] = new_client(self.enable_http, + verify, + self.enable_http2, + self.max_connections, + self.max_keepalive_connections, + self.keepalive_expiry, + dict(proxies), + local_address, + 0, + max_redirects) + return self._clients[key] + + async def aclose(self): + async def close_client(client): + try: + await client.aclose() + except httpx.HTTPError: + pass + await asyncio.gather(*[close_client(client) for client in self._clients.values()], return_exceptions=False) + + @staticmethod + def get_kwargs_clients(kwargs): + kwargs_clients = {} + if 'verify' in kwargs: + kwargs_clients['verify'] = kwargs.pop('verify') + if 'max_redirects' in kwargs: + kwargs_clients['max_redirects'] = kwargs.pop('max_redirects') + return kwargs_clients + + def is_valid_respones(self, response): + if (self.retry_on_http_error is True and 400 <= response.status_code <= 599) \ + or (isinstance(self.retry_on_http_error, list) and response.status_code in self.retry_on_http_error) \ + or (isinstance(self.retry_on_http_error, int) and response.status_code == self.retry_on_http_error): + return False + return True + + async def request(self, method, url, **kwargs): + retries = self.retries + while retries >= 0: # pragma: no cover + kwargs_clients = Network.get_kwargs_clients(kwargs) + client = self.get_client(**kwargs_clients) + try: + response = await client.request(method, url, **kwargs) + if self.is_valid_respones(response) or retries <= 0: + return response + except (httpx.RequestError, httpx.HTTPStatusError) as e: + if retries <= 0: + raise e + retries -= 1 + + def stream(self, method, url, **kwargs): + retries = self.retries + while retries >= 0: # pragma: no cover + kwargs_clients = Network.get_kwargs_clients(kwargs) + client = self.get_client(**kwargs_clients) + try: + response = client.stream(method, url, **kwargs) + if self.is_valid_respones(response) or retries <= 0: + return response + except (httpx.RequestError, httpx.HTTPStatusError) as e: + if retries <= 0: + raise e + retries -= 1 + + @classmethod + async def aclose_all(cls): + await asyncio.gather(*[network.aclose() for network in NETWORKS.values()], return_exceptions=False) + + +def get_network(name=None): + global NETWORKS + return NETWORKS[name or DEFAULT_NAME] + + +def initialize(settings_engines=None, settings_outgoing=None): + from searx.engines import engines + from searx import settings + + global NETWORKS + + settings_engines = settings_engines or settings.get('engines') + settings_outgoing = settings_outgoing or settings.get('outgoing') + + # default parameters for AsyncHTTPTransport + # see https://github.com/encode/httpx/blob/e05a5372eb6172287458b37447c30f650047e1b8/httpx/_transports/default.py#L108-L121 # noqa + default_params = { + 'enable_http': False, + 'verify': True, + 'enable_http2': settings_outgoing.get('enable_http2', True), + # Magic number kept from previous code + 'max_connections': settings_outgoing.get('pool_connections', 100), + # Picked from constructor + 'max_keepalive_connections': settings_outgoing.get('pool_maxsize', 10), + # + 'keepalive_expiry': settings_outgoing.get('keepalive_expiry', 5.0), + 'local_addresses': settings_outgoing.get('source_ips'), + 'proxies': settings_outgoing.get('proxies'), + # default maximum redirect + # from https://github.com/psf/requests/blob/8c211a96cdbe9fe320d63d9e1ae15c5c07e179f8/requests/models.py#L55 + 'max_redirects': settings_outgoing.get('max_redirects', 30), + # + 'retries': settings_outgoing.get('retries', 0), + 'retry_on_http_error': None, + } + + def new_network(params): + nonlocal default_params + result = {} + result.update(default_params) + result.update(params) + return Network(**result) + + def iter_networks(): + nonlocal settings_engines + for engine_spec in settings_engines: + engine_name = engine_spec['name'] + engine = engines.get(engine_name) + if engine is None: + continue + network = getattr(engine, 'network', None) + yield engine_name, engine, network + + if NETWORKS: + done() + NETWORKS.clear() + NETWORKS[DEFAULT_NAME] = new_network({}) + NETWORKS['ipv4'] = new_network({'local_addresses': '0.0.0.0'}) + NETWORKS['ipv6'] = new_network({'local_addresses': '::'}) + + # define networks from outgoing.networks + for network_name, network in settings_outgoing.get('networks', {}).items(): + NETWORKS[network_name] = new_network(network) + + # define networks from engines.[i].network (except references) + for engine_name, engine, network in iter_networks(): + if network is None: + network = {} + for attribute_name, attribute_value in default_params.items(): + if hasattr(engine, attribute_name): + network[attribute_name] = getattr(engine, attribute_name) + else: + network[attribute_name] = attribute_value + NETWORKS[engine_name] = new_network(network) + elif isinstance(network, dict): + NETWORKS[engine_name] = new_network(network) + + # define networks from engines.[i].network (references) + for engine_name, engine, network in iter_networks(): + if isinstance(network, str): + NETWORKS[engine_name] = NETWORKS[network] + + +@atexit.register +def done(): + """Close all HTTP client + + Avoid a warning at exit + see https://github.com/encode/httpx/blob/1a6e254f72d9fd5694a1c10a28927e193ab4f76b/httpx/_client.py#L1785 + + Note: since Network.aclose has to be async, it is not possible to call this method on Network.__del__ + So Network.aclose is called here using atexit.register + """ + try: + if LOOP: + future = asyncio.run_coroutine_threadsafe(Network.aclose_all(), LOOP) + # wait 3 seconds to close the HTTP clients + future.result(3) + finally: + NETWORKS.clear() + + +NETWORKS[DEFAULT_NAME] = Network() diff --git a/searx/raise_for_httperror.py b/searx/network/raise_for_httperror.py index bd12df9a9..bd12df9a9 100644 --- a/searx/raise_for_httperror.py +++ b/searx/network/raise_for_httperror.py diff --git a/searx/poolrequests.py b/searx/poolrequests.py deleted file mode 100644 index 8b365f913..000000000 --- a/searx/poolrequests.py +++ /dev/null @@ -1,550 +0,0 @@ -import atexit -import sys -import threading -import asyncio -import logging -import concurrent.futures -from time import time -from itertools import cycle - -import httpcore -import httpx -import h2.exceptions -from httpx_socks import AsyncProxyTransport -from python_socks import parse_proxy_url -import python_socks._errors - -from searx import settings -from searx import logger -from searx.raise_for_httperror import raise_for_httperror - -# Optional uvloop (support Python 3.6) -try: - import uvloop -except ImportError: - pass -else: - uvloop.install() - -# queue.SimpleQueue: Support Python 3.6 -try: - from queue import SimpleQueue -except ImportError: - from queue import Empty - from collections import deque - - class SimpleQueue: - """Minimal backport of queue.SimpleQueue""" - - def __init__(self): - self._queue = deque() - self._count = threading.Semaphore(0) - - def put(self, item): - self._queue.append(item) - self._count.release() - - def get(self, timeout=None): - if not self._count.acquire(True, timeout): - raise Empty - return self._queue.popleft() - - -logger = logger.getChild('poolrequests') - - -try: - import ssl - if ssl.OPENSSL_VERSION_INFO[0:3] < (1, 0, 2): - # https://github.com/certifi/python-certifi#1024-bit-root-certificates - logger.critical('You are using an old openssl version({0}), please upgrade above 1.0.2!' - .format(ssl.OPENSSL_VERSION)) - sys.exit(1) -except ImportError: - ssl = None -if not getattr(ssl, "HAS_SNI", False): - try: - import OpenSSL # pylint: disable=unused-import - except ImportError: - logger.critical("ssl doesn't support SNI and the pyopenssl module is not installed.\n" - "Some HTTPS connections will fail") - sys.exit(1) - - -LOOP = None -CLIENTS = dict() -THREADLOCAL = threading.local() -LIMITS = httpx.Limits( - # Magic number kept from previous code - max_connections=settings['outgoing'].get('pool_connections', 100), - # Picked from constructor - max_keepalive_connections=settings['outgoing'].get('pool_maxsize', 10), - # - keepalive_expiry=settings['outgoing'].get('keepalive_expiry', 5.0) -) -# default parameters for AsyncHTTPTransport -# see https://github.com/encode/httpx/blob/e05a5372eb6172287458b37447c30f650047e1b8/httpx/_transports/default.py#L108-L121 # noqa -TRANSPORT_KWARGS = { - 'http2': settings['outgoing'].get('http2', False), - 'retries': 0, - 'trust_env': False, - 'backend': 'asyncio' -} -# requests compatibility when reading proxy settings from settings.yml -PROXY_PATTERN_MAPPING = { - 'http': 'https://', - 'https:': 'https://' -} -# default maximum redirect -# from https://github.com/psf/requests/blob/8c211a96cdbe9fe320d63d9e1ae15c5c07e179f8/requests/models.py#L55 -DEFAULT_REDIRECT_LIMIT = 30 - - -if settings['outgoing'].get('source_ips'): - LOCAL_ADDRESS_CYCLE = cycle(settings['outgoing'].get('source_ips')) -else: - LOCAL_ADDRESS_CYCLE = cycle((None, )) - - -def set_timeout_for_thread(timeout, start_time=None): - THREADLOCAL.timeout = timeout - THREADLOCAL.start_time = start_time - - -def set_enable_http_protocol(enable_http): - THREADLOCAL.enable_http = enable_http - - -def get_enable_http_protocol(): - try: - return THREADLOCAL.enable_http - except AttributeError: - return False - - -def reset_time_for_thread(): - THREADLOCAL.total_time = 0 - - -def get_time_for_thread(): - return THREADLOCAL.total_time - - -def get_proxy_cycles(proxy_settings): - if not proxy_settings: - return None - # Backwards compatibility for single proxy in settings.yml - for protocol, proxy in proxy_settings.items(): - if isinstance(proxy, str): - proxy_settings[protocol] = [proxy] - - for protocol in proxy_settings: - proxy_settings[protocol] = cycle(proxy_settings[protocol]) - return proxy_settings - - -GLOBAL_PROXY_CYCLES = get_proxy_cycles(settings['outgoing'].get('proxies')) - - -def get_proxies(proxy_cycles): - if proxy_cycles: - return {protocol: next(proxy_cycle) for protocol, proxy_cycle in proxy_cycles.items()} - return None - - -def get_global_proxies(): - return get_proxies(GLOBAL_PROXY_CYCLES) - - -async def close_connections_for_url(connection_pool: httpcore.AsyncConnectionPool, url: httpcore._utils.URL): - origin = httpcore._utils.url_to_origin(url) - logger.debug('Drop connections for %r', origin) - connections_to_close = connection_pool._connections_for_origin(origin) - for connection in connections_to_close: - await connection_pool._remove_from_pool(connection) - try: - await connection.aclose() - except httpcore.NetworkError as e: - logger.warning('Error closing an existing connection', exc_info=e) - - -class AsyncHTTPTransportNoHttp(httpcore.AsyncHTTPTransport): - """Block HTTP request""" - - async def arequest(self, method, url, headers=None, stream=None, ext=None): - raise httpcore.UnsupportedProtocol("HTTP protocol is disabled") - - -class AsyncProxyTransportFixed(AsyncProxyTransport): - """Fix httpx_socks.AsyncProxyTransport - - Map python_socks exceptions to httpcore.ProxyError - - Map socket.gaierror to httpcore.ConnectError - - Note: keepalive_expiry is ignored, AsyncProxyTransport should call: - * self._keepalive_sweep() - * self._response_closed(self, connection) - - Note: AsyncProxyTransport inherit from AsyncConnectionPool - - Note: the API is going to change on httpx 0.18.0 - see https://github.com/encode/httpx/pull/1522 - """ - - async def arequest(self, method, url, headers=None, stream=None, ext=None): - retry = 2 - while retry > 0: - retry -= 1 - try: - return await super().arequest(method, url, headers, stream, ext) - except (python_socks._errors.ProxyConnectionError, - python_socks._errors.ProxyTimeoutError, - python_socks._errors.ProxyError) as e: - raise httpcore.ProxyError(e) - except OSError as e: - # socket.gaierror when DNS resolution fails - raise httpcore.NetworkError(e) - except httpcore.RemoteProtocolError as e: - # in case of httpcore.RemoteProtocolError: Server disconnected - await close_connections_for_url(self, url) - logger.warning('httpcore.RemoteProtocolError: retry', exc_info=e) - # retry - except (httpcore.NetworkError, httpcore.ProtocolError) as e: - # httpcore.WriteError on HTTP/2 connection leaves a new opened stream - # then each new request creates a new stream and raise the same WriteError - await close_connections_for_url(self, url) - raise e - - -class AsyncHTTPTransportFixed(httpx.AsyncHTTPTransport): - """Fix httpx.AsyncHTTPTransport""" - - async def arequest(self, method, url, headers=None, stream=None, ext=None): - retry = 2 - while retry > 0: - retry -= 1 - try: - return await super().arequest(method, url, headers, stream, ext) - except OSError as e: - # socket.gaierror when DNS resolution fails - raise httpcore.ConnectError(e) - except httpcore.CloseError as e: - # httpcore.CloseError: [Errno 104] Connection reset by peer - # raised by _keepalive_sweep() - # from https://github.com/encode/httpcore/blob/4b662b5c42378a61e54d673b4c949420102379f5/httpcore/_backends/asyncio.py#L198 # noqa - await close_connections_for_url(self._pool, url) - logger.warning('httpcore.CloseError: retry', exc_info=e) - # retry - except httpcore.RemoteProtocolError as e: - # in case of httpcore.RemoteProtocolError: Server disconnected - await close_connections_for_url(self._pool, url) - logger.warning('httpcore.RemoteProtocolError: retry', exc_info=e) - # retry - except (httpcore.ProtocolError, httpcore.NetworkError) as e: - await close_connections_for_url(self._pool, url) - raise e - - -def get_transport_for_socks_proxy(verify, local_address, proxy_url): - global LOOP, LIMITS, TRANSPORT_KWARGS - # support socks5h (requests compatibility): - # https://requests.readthedocs.io/en/master/user/advanced/#socks - # socks5:// hostname is resolved on client side - # socks5h:// hostname is resolved on proxy side - rdns = False - socks5h = 'socks5h://' - if proxy_url.startswith(socks5h): - proxy_url = 'socks5://' + proxy_url[len(socks5h):] - rdns = True - - proxy_type, proxy_host, proxy_port, proxy_username, proxy_password = parse_proxy_url(proxy_url) - - return AsyncProxyTransportFixed(proxy_type=proxy_type, proxy_host=proxy_host, proxy_port=proxy_port, - username=proxy_username, password=proxy_password, - rdns=rdns, - loop=LOOP, - verify=verify, - local_address=local_address, - max_connections=LIMITS.max_connections, - max_keepalive_connections=LIMITS.max_keepalive_connections, - keepalive_expiry=LIMITS.keepalive_expiry, - **TRANSPORT_KWARGS) - - -def get_transport(verify, local_address, proxy_url): - global LIMITS - return AsyncHTTPTransportFixed(verify=verify, - local_address=local_address, - limits=LIMITS, - proxy=httpx._config.Proxy(proxy_url) if proxy_url else None, - **TRANSPORT_KWARGS) - - -def iter_proxies(proxies): - # https://www.python-httpx.org/compatibility/#proxy-keys - if isinstance(proxies, str): - yield 'all://', proxies - elif isinstance(proxies, dict): - for pattern, proxy_url in proxies.items(): - pattern = PROXY_PATTERN_MAPPING.get(pattern, pattern) - yield pattern, proxy_url - - -def new_client(verify, local_address, proxies, max_redirects, enable_http): - # See https://www.python-httpx.org/advanced/#routing - mounts = {} - for pattern, proxy_url in iter_proxies(proxies): - if not enable_http and (pattern == 'http' or pattern.startswith('http://')): - continue - if proxy_url.startswith('socks4://') \ - or proxy_url.startswith('socks5://') \ - or proxy_url.startswith('socks5h://'): - mounts[pattern] = get_transport_for_socks_proxy(verify, local_address, proxy_url) - else: - mounts[pattern] = get_transport(verify, local_address, proxy_url) - - if not enable_http: - mounts['http://'] = AsyncHTTPTransportNoHttp() - - transport = get_transport(verify, local_address, None) - return httpx.AsyncClient(transport=transport, mounts=mounts, max_redirects=max_redirects) - - -def get_client(verify, local_address, proxies, max_redirects, allow_http): - global CLIENTS - key = (verify, local_address, repr(proxies), max_redirects, allow_http) - if key not in CLIENTS: - CLIENTS[key] = new_client(verify, local_address, proxies, max_redirects, allow_http) - return CLIENTS[key] - - -async def send_request(method, url, enable_http, kwargs): - if isinstance(url, bytes): - url = url.decode() - - verify = kwargs.pop('verify', True) - local_address = next(LOCAL_ADDRESS_CYCLE) - proxies = kwargs.pop('proxies', None) or get_global_proxies() - max_redirects = kwargs.pop('max_redirects', DEFAULT_REDIRECT_LIMIT) - - client = get_client(verify, local_address, proxies, max_redirects, enable_http) - response = await client.request(method.upper(), url, **kwargs) - - # requests compatibility - # see also https://www.python-httpx.org/compatibility/#checking-for-4xx5xx-responses - response.ok = not response.is_error - - return response - - -def request(method, url, **kwargs): - """same as requests/requests/api.py request(...)""" - time_before_request = time() - - # timeout - if 'timeout' in kwargs: - timeout = kwargs['timeout'] - else: - timeout = getattr(THREADLOCAL, 'timeout', None) - if timeout is not None: - kwargs['timeout'] = timeout - - # raise_for_error - check_for_httperror = True - if 'raise_for_httperror' in kwargs: - check_for_httperror = kwargs['raise_for_httperror'] - del kwargs['raise_for_httperror'] - - # do request - future = asyncio.run_coroutine_threadsafe(send_request(method, url, get_enable_http_protocol(), kwargs), LOOP) - try: - if timeout: - timeout += 0.2 # overhead - start_time = getattr(THREADLOCAL, 'start_time', time_before_request) - if start_time: - timeout -= time() - start_time - - response = future.result(timeout or 120) - except concurrent.futures.TimeoutError as e: - raise httpx.TimeoutException('Timeout', request=None) from e - - # update total_time. - # See get_time_for_thread() and reset_time_for_thread() - if hasattr(THREADLOCAL, 'total_time'): - time_after_request = time() - THREADLOCAL.total_time += time_after_request - time_before_request - - # raise an exception - if check_for_httperror: - raise_for_httperror(response) - - return response - - -async def stream_chunk_to_queue(method, url, q, **kwargs): - verify = kwargs.pop('verify', True) - local_address = next(LOCAL_ADDRESS_CYCLE) - proxies = kwargs.pop('proxies', None) or get_global_proxies() - # "30" from requests: - # https://github.com/psf/requests/blob/8c211a96cdbe9fe320d63d9e1ae15c5c07e179f8/requests/models.py#L55 - max_redirects = kwargs.pop('max_redirects', 30) - client = get_client(verify, local_address, proxies, max_redirects, True) - try: - async with client.stream(method, url, **kwargs) as response: - q.put(response) - async for chunk in response.aiter_bytes(65536): - if len(chunk) > 0: - q.put(chunk) - except (httpx.HTTPError, OSError, h2.exceptions.ProtocolError) as e: - q.put(e) - finally: - q.put(None) - - -def stream(method, url, **kwargs): - """Replace httpx.stream. - - Usage: - stream = poolrequests.stream(...) - response = next(stream) - for chunk in stream: - ... - - httpx.Client.stream requires to write the httpx.HTTPTransport version of the - the httpx.AsyncHTTPTransport declared above. - """ - q = SimpleQueue() - future = asyncio.run_coroutine_threadsafe(stream_chunk_to_queue(method, url, q, **kwargs), LOOP) - chunk_or_exception = q.get(timeout=60) - while chunk_or_exception is not None: - if isinstance(chunk_or_exception, Exception): - raise chunk_or_exception - yield chunk_or_exception - chunk_or_exception = q.get(timeout=60) - return future.result() - - -def get(url, **kwargs): - kwargs.setdefault('allow_redirects', True) - return request('get', url, **kwargs) - - -def options(url, **kwargs): - kwargs.setdefault('allow_redirects', True) - return request('options', url, **kwargs) - - -def head(url, **kwargs): - kwargs.setdefault('allow_redirects', False) - return request('head', url, **kwargs) - - -def post(url, data=None, **kwargs): - return request('post', url, data=data, **kwargs) - - -def put(url, data=None, **kwargs): - return request('put', url, data=data, **kwargs) - - -def patch(url, data=None, **kwargs): - return request('patch', url, data=data, **kwargs) - - -def delete(url, **kwargs): - return request('delete', url, **kwargs) - - -def init(): - # log - for logger_name in ('hpack.hpack', 'hpack.table'): - logging.getLogger(logger_name).setLevel(logging.WARNING) - - # loop - def loop_thread(): - global LOOP - LOOP = asyncio.new_event_loop() - LOOP.run_forever() - - th = threading.Thread( - target=loop_thread, - name='asyncio_loop', - daemon=True, - ) - th.start() - - -@atexit.register -def done(): - """Close all HTTP client - - Avoid a warning at exit - see https://github.com/encode/httpx/blob/1a6e254f72d9fd5694a1c10a28927e193ab4f76b/httpx/_client.py#L1785 - """ - global LOOP - - async def close_client(client): - try: - await client.aclose() - except httpx.HTTPError: - pass - - async def close_clients(): - await asyncio.gather(*[close_client(client) for client in CLIENTS.values()], return_exceptions=False) - future = asyncio.run_coroutine_threadsafe(close_clients(), LOOP) - # wait 3 seconds to close the HTTP clients - future.result(3) - - -init() - - -# ## TEMPORARY DEBUG ## - - -def debug_connection(connection): - now = LOOP.time() - expired = (connection.state == httpcore._async.base.ConnectionState.IDLE - and connection.expires_at is not None - and now >= connection.expires_at) - return connection.info()\ - + (', connect_failed' if connection.connect_failed else '')\ - + (', expired' if expired else '') - - -def debug_origin(origin): - return origin[0].decode() + '://' + origin[1].decode() + ':' + str(origin[2]) - - -def debug_transport(transport): - result = { - '__class__': str(transport.__class__.__name__) - } - if isinstance(transport, (httpx.AsyncHTTPTransport, AsyncHTTPTransportFixed)): - pool = transport._pool - result['__pool_class__'] = str(pool.__class__.__name__) - if isinstance(pool, httpcore.AsyncConnectionPool): - for origin, connections in pool._connections.items(): - result[debug_origin(origin)] = [debug_connection(connection) for connection in connections] - return result - elif isinstance(transport, AsyncProxyTransportFixed): - for origin, connections in transport._connections.items(): - result[debug_origin(origin)] = [debug_connection(connection) for connection in connections] - return result - return result - - -def debug_asyncclient(client, key=None): - result = {} - if key: - result['__key__'] = [k if isinstance(k, (str, int, float, bool, type(None))) else repr(k) for k in key] - result['__default__'] = debug_transport(client._transport) - for urlpattern, transport in client._mounts.items(): - result[urlpattern.pattern] = debug_transport(transport) - return result - - -def debug_asyncclients(): - global CLIENTS - return [debug_asyncclient(client, key) for key, client in CLIENTS.items()] diff --git a/searx/search/checker/impl.py b/searx/search/checker/impl.py index b5fb38a99..e54b3f68d 100644 --- a/searx/search/checker/impl.py +++ b/searx/search/checker/impl.py @@ -13,7 +13,7 @@ from langdetect import detect_langs from langdetect.lang_detect_exception import LangDetectException import httpx -from searx import poolrequests, logger +from searx import network, logger from searx.results import ResultContainer from searx.search.models import SearchQuery, EngineRef from searx.search.processors import EngineProcessor @@ -75,8 +75,8 @@ def _is_url_image(image_url): while retry > 0: a = time() try: - poolrequests.set_timeout_for_thread(10.0, time()) - r = poolrequests.get(image_url, timeout=10.0, allow_redirects=True, headers={ + network.set_timeout_for_thread(10.0, time()) + r = network.get(image_url, timeout=10.0, allow_redirects=True, headers={ 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:84.0) Gecko/20100101 Firefox/84.0', 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8', 'Accept-Language': 'en-US;q=0.5,en;q=0.3', diff --git a/searx/search/processors/online.py b/searx/search/processors/online.py index 24d8f53e2..66719ea9b 100644 --- a/searx/search/processors/online.py +++ b/searx/search/processors/online.py @@ -6,7 +6,7 @@ import asyncio import httpx -import searx.poolrequests as poolrequests +import searx.network from searx.engines import settings from searx import logger from searx.utils import gen_useragent @@ -64,10 +64,6 @@ class OnlineProcessor(EngineProcessor): auth=params['auth'] ) - # setting engine based proxies - if hasattr(self.engine, 'proxies'): - request_args['proxies'] = poolrequests.get_proxies(self.engine.proxies) - # max_redirects max_redirects = params.get('max_redirects') if max_redirects: @@ -85,9 +81,9 @@ class OnlineProcessor(EngineProcessor): # specific type of request (GET or POST) if params['method'] == 'GET': - req = poolrequests.get + req = searx.network.get else: - req = poolrequests.post + req = searx.network.post request_args['data'] = params['data'] @@ -128,11 +124,11 @@ class OnlineProcessor(EngineProcessor): def search(self, query, params, result_container, start_time, timeout_limit): # set timeout for all HTTP requests - poolrequests.set_timeout_for_thread(timeout_limit, start_time=start_time) + searx.network.set_timeout_for_thread(timeout_limit, start_time=start_time) # reset the HTTP total time - poolrequests.reset_time_for_thread() - # enable HTTP only if explicitly enabled - poolrequests.set_enable_http_protocol(self.engine.enable_http) + searx.network.reset_time_for_thread() + # set the network + searx.network.set_context_network_name(self.engine_name) # suppose everything will be alright http_exception = False @@ -149,7 +145,7 @@ class OnlineProcessor(EngineProcessor): # update engine time when there is no exception engine_time = time() - start_time - page_load_time = poolrequests.get_time_for_thread() + page_load_time = searx.network.get_time_for_thread() result_container.add_timing(self.engine_name, engine_time, page_load_time) with threading.RLock(): self.engine.stats['engine_time'] += engine_time @@ -162,7 +158,7 @@ class OnlineProcessor(EngineProcessor): # Timing engine_time = time() - start_time - page_load_time = poolrequests.get_time_for_thread() + page_load_time = searx.network.get_time_for_thread() result_container.add_timing(self.engine_name, engine_time, page_load_time) # Record the errors diff --git a/searx/settings.yml b/searx/settings.yml index 742492c3c..60e6dd5aa 100644 --- a/searx/settings.yml +++ b/searx/settings.yml @@ -72,16 +72,12 @@ outgoing: # communication with search engines useragent_suffix : "" # suffix of searx_useragent, could contain informations like an email address to the administrator pool_connections : 100 # The maximum number of concurrent connections that may be established. pool_maxsize : 20 # Allow the connection pool to maintain keep-alive connections below this point. - keepalive_expiry: 30.0 # Number of seconds to keep a connection in the pool - http2: True # Enable HTTP/2 (experimental) + enable_http2: True # See https://www.python-httpx.org/http2/ # uncomment below section if you want to use a proxy # see https://2.python-requests.org/en/latest/user/advanced/#proxies # SOCKS proxies are also supported: see https://2.python-requests.org/en/latest/user/advanced/#socks # proxies: -# http: -# - http://proxy1:8080 -# - http://proxy2:8080 -# https: +# all://: # - http://proxy1:8080 # - http://proxy2:8080 # using_tor_proxy : True @@ -91,6 +87,7 @@ outgoing: # communication with search engines # source_ips: # - 1.1.1.1 # - 1.1.1.2 +# - fe80::/126 # External plugin configuration # See http://searx.github.io/searx/dev/plugins.html for more details @@ -855,11 +852,13 @@ engines: engine : qwant shortcut : qwi categories : images + network: qwant - name : qwant news engine : qwant shortcut : qwn categories : news + network: qwant # - name: library # engine: recoll diff --git a/searx/testing.py b/searx/testing.py index ec253cb3d..51ca92bd0 100644 --- a/searx/testing.py +++ b/searx/testing.py @@ -10,8 +10,8 @@ import traceback from os.path import dirname, join, abspath, realpath -from unittest import TestCase from splinter import Browser +import aiounittest class SearxTestLayer: @@ -82,7 +82,7 @@ def run_robot_tests(tests): test(browser) -class SearxTestCase(TestCase): +class SearxTestCase(aiounittest.AsyncTestCase): """Base test case for non-robot tests.""" layer = SearxTestLayer diff --git a/searx/webapp.py b/searx/webapp.py index 1571df8f1..8c59b8f3a 100755 --- a/searx/webapp.py +++ b/searx/webapp.py @@ -93,7 +93,7 @@ from searx.plugins import plugins from searx.plugins.oa_doi_rewrite import get_doi_resolver from searx.preferences import Preferences, ValidationException, LANGUAGE_CODES from searx.answerers import answerers -from searx import poolrequests +from searx.network import stream as http_stream from searx.answerers import ask from searx.metrology.error_recorder import errors_per_engines @@ -919,7 +919,7 @@ def image_proxy(): try: headers = dict_subset(request.headers, {'If-Modified-Since', 'If-None-Match'}) headers['User-Agent'] = gen_useragent() - stream = poolrequests.stream( + stream = http_stream( method='GET', url=url, headers=headers, @@ -1109,11 +1109,6 @@ def config(): }) -@app.route('/config/http') -def config_http(): - return jsonify(poolrequests.debug_asyncclients()) - - @app.errorhandler(404) def page_not_found(e): return render('404.html'), 404 diff --git a/searx_extra/update/update_engine_descriptions.py b/searx_extra/update/update_engine_descriptions.py index 109fdbfa0..cf9007da3 100755 --- a/searx_extra/update/update_engine_descriptions.py +++ b/searx_extra/update/update_engine_descriptions.py @@ -10,7 +10,7 @@ from searx.engines.wikidata import send_wikidata_query from searx.utils import extract_text import searx import searx.search -import searx.poolrequests +import searx.network SPARQL_WIKIPEDIA_ARTICLE = """ SELECT DISTINCT ?item ?name @@ -59,7 +59,7 @@ def get_wikipedia_summary(language, pageid): search_url = 'https://{language}.wikipedia.org/api/rest_v1/page/summary/{title}' url = search_url.format(title=quote(pageid), language=language) try: - response = searx.poolrequests.get(url) + response = searx.network.get(url) response.raise_for_status() api_result = json.loads(response.text) return api_result.get('extract') @@ -89,7 +89,7 @@ def get_website_description(url, lang1, lang2=None): lang_list.append(lang2) headers['Accept-Language'] = f'{",".join(lang_list)};q=0.8' try: - response = searx.poolrequests.get(url, headers=headers, timeout=10) + response = searx.network.get(url, headers=headers, timeout=10) response.raise_for_status() except Exception: return (None, None) diff --git a/tests/unit/network/__init__.py b/tests/unit/network/__init__.py new file mode 100644 index 000000000..e69de29bb --- /dev/null +++ b/tests/unit/network/__init__.py diff --git a/tests/unit/network/test_network.py b/tests/unit/network/test_network.py new file mode 100644 index 000000000..246dfd85e --- /dev/null +++ b/tests/unit/network/test_network.py @@ -0,0 +1,236 @@ +# SPDX-License-Identifier: AGPL-3.0-or-later + +from mock import patch + +import httpx + +from searx.network.network import Network, NETWORKS +from searx.testing import SearxTestCase + + +class TestNetwork(SearxTestCase): + + def test_simple(self): + network = Network() + + self.assertEqual(next(network._local_addresses_cycle), None) + self.assertEqual(next(network._proxies_cycle), ()) + + def test_ipaddress_cycle(self): + network = NETWORKS['ipv6'] + self.assertEqual(next(network._local_addresses_cycle), '::') + self.assertEqual(next(network._local_addresses_cycle), '::') + + network = NETWORKS['ipv4'] + self.assertEqual(next(network._local_addresses_cycle), '0.0.0.0') + self.assertEqual(next(network._local_addresses_cycle), '0.0.0.0') + + network = Network(local_addresses=['192.168.0.1', '192.168.0.2']) + self.assertEqual(next(network._local_addresses_cycle), '192.168.0.1') + self.assertEqual(next(network._local_addresses_cycle), '192.168.0.2') + self.assertEqual(next(network._local_addresses_cycle), '192.168.0.1') + + network = Network(local_addresses=['192.168.0.0/30']) + self.assertEqual(next(network._local_addresses_cycle), '192.168.0.1') + self.assertEqual(next(network._local_addresses_cycle), '192.168.0.2') + self.assertEqual(next(network._local_addresses_cycle), '192.168.0.1') + self.assertEqual(next(network._local_addresses_cycle), '192.168.0.2') + + network = Network(local_addresses=['fe80::/10']) + self.assertEqual(next(network._local_addresses_cycle), 'fe80::1') + self.assertEqual(next(network._local_addresses_cycle), 'fe80::2') + self.assertEqual(next(network._local_addresses_cycle), 'fe80::3') + + with self.assertRaises(ValueError): + Network(local_addresses=['not_an_ip_address']) + + def test_proxy_cycles(self): + network = Network(proxies='http://localhost:1337') + self.assertEqual(next(network._proxies_cycle), (('all://', 'http://localhost:1337'),)) + + network = Network(proxies={ + 'https': 'http://localhost:1337', + 'http': 'http://localhost:1338' + }) + self.assertEqual(next(network._proxies_cycle), + (('https://', 'http://localhost:1337'), ('http://', 'http://localhost:1338'))) + self.assertEqual(next(network._proxies_cycle), + (('https://', 'http://localhost:1337'), ('http://', 'http://localhost:1338'))) + + network = Network(proxies={ + 'https': ['http://localhost:1337', 'http://localhost:1339'], + 'http': 'http://localhost:1338' + }) + self.assertEqual(next(network._proxies_cycle), + (('https://', 'http://localhost:1337'), ('http://', 'http://localhost:1338'))) + self.assertEqual(next(network._proxies_cycle), + (('https://', 'http://localhost:1339'), ('http://', 'http://localhost:1338'))) + + with self.assertRaises(ValueError): + Network(proxies=1) + + def test_get_kwargs_clients(self): + kwargs = { + 'verify': True, + 'max_redirects': 5, + 'timeout': 2, + } + kwargs_client = Network.get_kwargs_clients(kwargs) + + self.assertEqual(len(kwargs_client), 2) + self.assertEqual(len(kwargs), 1) + + self.assertEqual(kwargs['timeout'], 2) + + self.assertTrue(kwargs_client['verify']) + self.assertEqual(kwargs_client['max_redirects'], 5) + + async def test_get_client(self): + network = Network(verify=True) + client1 = network.get_client() + client2 = network.get_client(verify=True) + client3 = network.get_client(max_redirects=10) + client4 = network.get_client(verify=True) + client5 = network.get_client(verify=False) + client6 = network.get_client(max_redirects=10) + + self.assertEqual(client1, client2) + self.assertEqual(client1, client4) + self.assertNotEqual(client1, client3) + self.assertNotEqual(client1, client5) + self.assertEqual(client3, client6) + + await network.aclose() + + async def test_aclose(self): + network = Network(verify=True) + network.get_client() + await network.aclose() + + async def test_request(self): + a_text = 'Lorem Ipsum' + response = httpx.Response(status_code=200, text=a_text) + with patch.object(httpx.AsyncClient, 'request', return_value=response): + network = Network(enable_http=True) + response = await network.request('GET', 'https://example.com/') + self.assertEqual(response.text, a_text) + await network.aclose() + + +class TestNetworkRequestRetries(SearxTestCase): + + TEXT = 'Lorem Ipsum' + + @classmethod + def get_response_404_then_200(cls): + first = True + + async def get_response(*args, **kwargs): + nonlocal first + if first: + first = False + return httpx.Response(status_code=403, text=TestNetworkRequestRetries.TEXT) + return httpx.Response(status_code=200, text=TestNetworkRequestRetries.TEXT) + return get_response + + async def test_retries_ok(self): + with patch.object(httpx.AsyncClient, 'request', new=TestNetworkRequestRetries.get_response_404_then_200()): + network = Network(enable_http=True, retries=1, retry_on_http_error=403) + response = await network.request('GET', 'https://example.com/') + self.assertEqual(response.text, TestNetworkRequestRetries.TEXT) + await network.aclose() + + async def test_retries_fail_int(self): + with patch.object(httpx.AsyncClient, 'request', new=TestNetworkRequestRetries.get_response_404_then_200()): + network = Network(enable_http=True, retries=0, retry_on_http_error=403) + response = await network.request('GET', 'https://example.com/') + self.assertEqual(response.status_code, 403) + await network.aclose() + + async def test_retries_fail_list(self): + with patch.object(httpx.AsyncClient, 'request', new=TestNetworkRequestRetries.get_response_404_then_200()): + network = Network(enable_http=True, retries=0, retry_on_http_error=[403, 429]) + response = await network.request('GET', 'https://example.com/') + self.assertEqual(response.status_code, 403) + await network.aclose() + + async def test_retries_fail_bool(self): + with patch.object(httpx.AsyncClient, 'request', new=TestNetworkRequestRetries.get_response_404_then_200()): + network = Network(enable_http=True, retries=0, retry_on_http_error=True) + response = await network.request('GET', 'https://example.com/') + self.assertEqual(response.status_code, 403) + await network.aclose() + + async def test_retries_exception_then_200(self): + request_count = 0 + + async def get_response(*args, **kwargs): + nonlocal request_count + request_count += 1 + if request_count < 3: + raise httpx.RequestError('fake exception', request=None) + return httpx.Response(status_code=200, text=TestNetworkRequestRetries.TEXT) + + with patch.object(httpx.AsyncClient, 'request', new=get_response): + network = Network(enable_http=True, retries=2) + response = await network.request('GET', 'https://example.com/') + self.assertEqual(response.status_code, 200) + self.assertEqual(response.text, TestNetworkRequestRetries.TEXT) + await network.aclose() + + async def test_retries_exception(self): + async def get_response(*args, **kwargs): + raise httpx.RequestError('fake exception', request=None) + + with patch.object(httpx.AsyncClient, 'request', new=get_response): + network = Network(enable_http=True, retries=0) + with self.assertRaises(httpx.RequestError): + await network.request('GET', 'https://example.com/') + await network.aclose() + + +class TestNetworkStreamRetries(SearxTestCase): + + TEXT = 'Lorem Ipsum' + + @classmethod + def get_response_exception_then_200(cls): + first = True + + def stream(*args, **kwargs): + nonlocal first + if first: + first = False + raise httpx.RequestError('fake exception', request=None) + return httpx.Response(status_code=200, text=TestNetworkStreamRetries.TEXT) + return stream + + async def test_retries_ok(self): + with patch.object(httpx.AsyncClient, 'stream', new=TestNetworkStreamRetries.get_response_exception_then_200()): + network = Network(enable_http=True, retries=1, retry_on_http_error=403) + response = network.stream('GET', 'https://example.com/') + self.assertEqual(response.text, TestNetworkStreamRetries.TEXT) + await network.aclose() + + async def test_retries_fail(self): + with patch.object(httpx.AsyncClient, 'stream', new=TestNetworkStreamRetries.get_response_exception_then_200()): + network = Network(enable_http=True, retries=0, retry_on_http_error=403) + with self.assertRaises(httpx.RequestError): + network.stream('GET', 'https://example.com/') + await network.aclose() + + async def test_retries_exception(self): + first = True + + def stream(*args, **kwargs): + nonlocal first + if first: + first = False + return httpx.Response(status_code=403, text=TestNetworkRequestRetries.TEXT) + return httpx.Response(status_code=200, text=TestNetworkRequestRetries.TEXT) + + with patch.object(httpx.AsyncClient, 'stream', new=stream): + network = Network(enable_http=True, retries=0, retry_on_http_error=403) + response = network.stream('GET', 'https://example.com/') + self.assertEqual(response.status_code, 403) + await network.aclose() diff --git a/tests/unit/test_poolrequests.py b/tests/unit/test_poolrequests.py deleted file mode 100644 index 3063ebcbd..000000000 --- a/tests/unit/test_poolrequests.py +++ /dev/null @@ -1,62 +0,0 @@ -from searx.testing import SearxTestCase - -from searx.poolrequests import get_proxy_cycles, get_proxies - - -CONFIG = {'http': ['http://localhost:9090', 'http://localhost:9092'], - 'https': ['http://localhost:9091', 'http://localhost:9093']} - - -class TestProxy(SearxTestCase): - - def test_noconfig(self): - cycles = get_proxy_cycles(None) - self.assertIsNone(cycles) - - cycles = get_proxy_cycles(False) - self.assertIsNone(cycles) - - def test_oldconfig(self): - config = { - 'http': 'http://localhost:9090', - 'https': 'http://localhost:9091', - } - cycles = get_proxy_cycles(config) - self.assertEqual(next(cycles['http']), 'http://localhost:9090') - self.assertEqual(next(cycles['http']), 'http://localhost:9090') - self.assertEqual(next(cycles['https']), 'http://localhost:9091') - self.assertEqual(next(cycles['https']), 'http://localhost:9091') - - def test_one_proxy(self): - config = { - 'http': ['http://localhost:9090'], - 'https': ['http://localhost:9091'], - } - cycles = get_proxy_cycles(config) - self.assertEqual(next(cycles['http']), 'http://localhost:9090') - self.assertEqual(next(cycles['http']), 'http://localhost:9090') - self.assertEqual(next(cycles['https']), 'http://localhost:9091') - self.assertEqual(next(cycles['https']), 'http://localhost:9091') - - def test_multiple_proxies(self): - cycles = get_proxy_cycles(CONFIG) - self.assertEqual(next(cycles['http']), 'http://localhost:9090') - self.assertEqual(next(cycles['http']), 'http://localhost:9092') - self.assertEqual(next(cycles['http']), 'http://localhost:9090') - self.assertEqual(next(cycles['https']), 'http://localhost:9091') - self.assertEqual(next(cycles['https']), 'http://localhost:9093') - self.assertEqual(next(cycles['https']), 'http://localhost:9091') - - def test_getproxies_none(self): - self.assertIsNone(get_proxies(None)) - - def test_getproxies_config(self): - cycles = get_proxy_cycles(CONFIG) - self.assertEqual(get_proxies(cycles), { - 'http': 'http://localhost:9090', - 'https': 'http://localhost:9091' - }) - self.assertEqual(get_proxies(cycles), { - 'http': 'http://localhost:9092', - 'https': 'http://localhost:9093' - }) |