diff --git a/synapse/app/_base.py b/synapse/app/_base.py
index 07188976c7..ff321bea9d 100644
--- a/synapse/app/_base.py
+++ b/synapse/app/_base.py
@@ -64,6 +64,7 @@ from synapse.events.presence_router import load_legacy_presence_router
from synapse.events.spamcheck import load_legacy_spam_checkers
from synapse.events.third_party_rules import load_legacy_third_party_event_rules
from synapse.handlers.auth import load_legacy_password_auth_providers
+from synapse.http.outbound_federation_proxy import OutboundFederationProxyFactory
from synapse.http.site import SynapseSite
from synapse.logging.context import PreserveLoggingContext
from synapse.logging.opentracing import init_tracer
@@ -387,8 +388,7 @@ def listen_outbound_fed_proxy(
context_factory: Optional[IOpenSSLContextFactory],
reactor: ISynapseReactor = reactor,
) -> None:
- factory = HTTPFactory.forProtocol(Proxy)
- listen_http(listener_config, factory, context_factory, reactor)
+ listen_http(listener_config, OutboundFederationProxyFactory, context_factory, reactor)
def listen_http(
diff --git a/synapse/http/outbound_federation_proxy.py b/synapse/http/outbound_federation_proxy.py
new file mode 100644
index 0000000000..1f3ed0c884
--- /dev/null
+++ b/synapse/http/outbound_federation_proxy.py
@@ -0,0 +1,22 @@
+from twisted.web.http import HTTPFactory
+from twisted.web.proxy import Proxy, ProxyClient, ProxyClientFactory, ProxyRequest
+
+
+class FederationOutboundProxyClient(ProxyClient):
+ ...
+
+
+class FederationOutboundProxyClientFactory(ProxyClientFactory):
+ protocol = FederationOutboundProxyClient
+
+
+class FederationOutboundProxyRequest(ProxyRequest):
+ protocols = {b"matrix": FederationOutboundProxyClientFactory}
+ ports = {b"matrix": 80}
+
+
+class FederationOutboundProxy(Proxy):
+ requestFactory = FederationOutboundProxyRequest
+
+
+OutboundFederationProxyFactory = HTTPFactory.forProtocol(FederationOutboundProxy)
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