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>

1 files changed, 20 insertions, 0 deletions

diff --git a/docs/usage/configuration/config_documentation.md b/docs/usage/configuration/config_documentation.md

index 9a6bd08d01..f5937dd902 100644
--- a/docs/usage/configuration/config_documentation.md
+++ b/docs/usage/configuration/config_documentation.md
@@ -3893,6 +3893,26 @@ Example configuration:
 worker_replication_http_port: 9093
 ```
 ---
+### `worker_replication_http_tls`
+
+Whether TLS should be used for talking to the HTTP replication port on the main
+Synapse process.
+The main Synapse process defines this with the `tls` option on its [listener](#listeners) that
+has the `replication` resource enabled.
+
+**Please note:** by default, it is not safe to expose replication ports to the
+public Internet, even with TLS enabled.
+See [`worker_replication_secret`](#worker_replication_secret).
+
+Defaults to `false`.
+
+*Added in Synapse 1.72.0.*
+
+Example configuration:
+```yaml
+worker_replication_http_tls: true
+```
+---
 ### `worker_listeners`
 
 A worker can handle HTTP requests. To do so, a `worker_listeners` option