Support using SSL on worker endpoints. (#14128)

* Fix missing SSL support in worker endpoints.

* Add changelog

* SSL for Replication endpoint

* Remove unit test change

* Refactor listener creation to reduce duplicated code

* Fix the logger message

* Update synapse/app/_base.py

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

* Update synapse/app/_base.py

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

* Update synapse/app/_base.py

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

* Add config documentation for new TLS option

Co-authored-by: Tuomas Ojamies <tojamies@palantir.com>
Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
Co-authored-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>

synapse/app/_base.py

@@ -47,6 +47,7 @@ from twisted.internet.tcp import Port
 from twisted.logger import LoggingFile, LogLevel
 from twisted.protocols.tls import TLSMemoryBIOFactory
 from twisted.python.threadpool import ThreadPool
+from twisted.web.resource import Resource
 
 import synapse.util.caches
 from synapse.api.constants import MAX_PDU_SIZE
@@ -55,12 +56,13 @@ from synapse.app.phone_stats_home import start_phone_stats_home
 from synapse.config import ConfigError
 from synapse.config._base import format_config_error
 from synapse.config.homeserver import HomeServerConfig
-from synapse.config.server import ManholeConfig
+from synapse.config.server import ListenerConfig, ManholeConfig
 from synapse.crypto import context_factory
 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.site import SynapseSite
 from synapse.logging.context import PreserveLoggingContext
 from synapse.logging.opentracing import init_tracer
 from synapse.metrics import install_gc_manager, register_threadpool
@@ -357,6 +359,55 @@ def listen_tcp(
     return r  # type: ignore[return-value]
 
 
+def listen_http(
+    listener_config: ListenerConfig,
+    root_resource: Resource,
+    version_string: str,
+    max_request_body_size: int,
+    context_factory: IOpenSSLContextFactory,
+    reactor: IReactorSSL = reactor,
+) -> List[Port]:
+    port = listener_config.port
+    bind_addresses = listener_config.bind_addresses
+    tls = listener_config.tls
+
+    assert listener_config.http_options is not None
+
+    site_tag = listener_config.http_options.tag
+    if site_tag is None:
+        site_tag = str(port)
+
+    site = SynapseSite(
+        "synapse.access.%s.%s" % ("https" if tls else "http", site_tag),
+        site_tag,
+        listener_config,
+        root_resource,
+        version_string,
+        max_request_body_size=max_request_body_size,
+        reactor=reactor,
+    )
+    if tls:
+        # refresh_certificate should have been called before this.
+        assert context_factory is not None
+        ports = listen_ssl(
+            bind_addresses,
+            port,
+            site,
+            context_factory,
+            reactor=reactor,
+        )
+        logger.info("Synapse now listening on TCP port %d (TLS)", port)
+    else:
+        ports = listen_tcp(
+            bind_addresses,
+            port,
+            site,
+            reactor=reactor,
+        )
+        logger.info("Synapse now listening on TCP port %d", port)
+    return ports
+
+
 def listen_ssl(
     bind_addresses: Collection[str],
     port: int,