diff --git a/synapse/http/client.py b/synapse/http/client.py
index e54d9bd213..a910548f1e 100644
--- a/synapse/http/client.py
+++ b/synapse/http/client.py
@@ -289,8 +289,7 @@ class SimpleHttpClient:
treq_args: Dict[str, Any] = {},
ip_whitelist: Optional[IPSet] = None,
ip_blacklist: Optional[IPSet] = None,
- http_proxy: Optional[bytes] = None,
- https_proxy: Optional[bytes] = None,
+ use_proxy: bool = False,
):
"""
Args:
@@ -300,8 +299,8 @@ class SimpleHttpClient:
we may not request.
ip_whitelist: The whitelisted IP addresses, that we can
request if it were otherwise caught in a blacklist.
- http_proxy: proxy server to use for http connections. host[:port]
- https_proxy: proxy server to use for https connections. host[:port]
+ use_proxy: Whether proxy settings should be discovered and used
+ from conventional environment variables.
"""
self.hs = hs
@@ -345,8 +344,7 @@ class SimpleHttpClient:
connectTimeout=15,
contextFactory=self.hs.get_http_client_context_factory(),
pool=pool,
- http_proxy=http_proxy,
- https_proxy=https_proxy,
+ use_proxy=use_proxy,
)
if self._ip_blacklist:
diff --git a/synapse/http/proxyagent.py b/synapse/http/proxyagent.py
index b730d2c634..3d553ae236 100644
--- a/synapse/http/proxyagent.py
+++ b/synapse/http/proxyagent.py
@@ -14,6 +14,7 @@
# limitations under the License.
import logging
import re
+from urllib.request import getproxies_environment, proxy_bypass_environment
from zope.interface import implementer
@@ -58,6 +59,9 @@ class ProxyAgent(_AgentBase):
pool (HTTPConnectionPool|None): connection pool to be used. If None, a
non-persistent pool instance will be created.
+
+ use_proxy (bool): Whether proxy settings should be discovered and used
+ from conventional environment variables.
"""
def __init__(
@@ -68,8 +72,7 @@ class ProxyAgent(_AgentBase):
connectTimeout=None,
bindAddress=None,
pool=None,
- http_proxy=None,
- https_proxy=None,
+ use_proxy=False,
):
_AgentBase.__init__(self, reactor, pool)
@@ -84,6 +87,15 @@ class ProxyAgent(_AgentBase):
if bindAddress is not None:
self._endpoint_kwargs["bindAddress"] = bindAddress
+ http_proxy = None
+ https_proxy = None
+ no_proxy = None
+ if use_proxy:
+ proxies = getproxies_environment()
+ http_proxy = proxies["http"].encode() if "http" in proxies else None
+ https_proxy = proxies["https"].encode() if "https" in proxies else None
+ no_proxy = proxies["no"] if "no" in proxies else None
+
self.http_proxy_endpoint = _http_proxy_endpoint(
http_proxy, self.proxy_reactor, **self._endpoint_kwargs
)
@@ -92,6 +104,8 @@ class ProxyAgent(_AgentBase):
https_proxy, self.proxy_reactor, **self._endpoint_kwargs
)
+ self.no_proxy = no_proxy
+
self._policy_for_https = contextFactory
self._reactor = reactor
@@ -139,13 +153,28 @@ class ProxyAgent(_AgentBase):
pool_key = (parsed_uri.scheme, parsed_uri.host, parsed_uri.port)
request_path = parsed_uri.originForm
- if parsed_uri.scheme == b"http" and self.http_proxy_endpoint:
+ should_skip_proxy = False
+ if self.no_proxy is not None:
+ should_skip_proxy = proxy_bypass_environment(
+ parsed_uri.host.decode(),
+ proxies={"no": self.no_proxy},
+ )
+
+ if (
+ parsed_uri.scheme == b"http"
+ and self.http_proxy_endpoint
+ and not should_skip_proxy
+ ):
# Cache *all* connections under the same key, since we are only
# connecting to a single destination, the proxy:
pool_key = ("http-proxy", self.http_proxy_endpoint)
endpoint = self.http_proxy_endpoint
request_path = uri
- elif parsed_uri.scheme == b"https" and self.https_proxy_endpoint:
+ elif (
+ parsed_uri.scheme == b"https"
+ and self.https_proxy_endpoint
+ and not should_skip_proxy
+ ):
endpoint = HTTPConnectProxyEndpoint(
self.proxy_reactor,
self.https_proxy_endpoint,
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index 6104ef4e46..89dc6b1c98 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -149,8 +149,7 @@ class PreviewUrlResource(DirectServeJsonResource):
treq_args={"browser_like_redirects": True},
ip_whitelist=hs.config.url_preview_ip_range_whitelist,
ip_blacklist=hs.config.url_preview_ip_range_blacklist,
- http_proxy=os.getenvb(b"http_proxy"),
- https_proxy=os.getenvb(b"HTTPS_PROXY"),
+ use_proxy=True,
)
self.media_repo = media_repo
self.primary_base_path = media_repo.primary_base_path
diff --git a/synapse/server.py b/synapse/server.py
index 4b9ec7f0ae..1d4370e0ba 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -24,7 +24,6 @@
import abc
import functools
import logging
-import os
from typing import (
TYPE_CHECKING,
Any,
@@ -370,11 +369,7 @@ class HomeServer(metaclass=abc.ABCMeta):
"""
An HTTP client that uses configured HTTP(S) proxies.
"""
- return SimpleHttpClient(
- self,
- http_proxy=os.getenvb(b"http_proxy"),
- https_proxy=os.getenvb(b"HTTPS_PROXY"),
- )
+ return SimpleHttpClient(self, use_proxy=True)
@cache_in_self
def get_proxied_blacklisted_http_client(self) -> SimpleHttpClient:
@@ -386,8 +381,7 @@ class HomeServer(metaclass=abc.ABCMeta):
self,
ip_whitelist=self.config.ip_range_whitelist,
ip_blacklist=self.config.ip_range_blacklist,
- http_proxy=os.getenvb(b"http_proxy"),
- https_proxy=os.getenvb(b"HTTPS_PROXY"),
+ use_proxy=True,
)
@cache_in_self
|
