Rip out fedsockets from the release branch

CHANGELOG.md

@@ -27,7 +27,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Added
 - Media preview proxy (requires `ffmpeg` and `ImageMagick` to be installed and media proxy to be enabled; see `:media_preview_proxy` config for more details).
 - Pleroma API: Importing the mutes users from CSV files.
-- Experimental websocket-based federation between Pleroma instances.
 
 <details>
   <summary>API Changes</summary>

config/config.exs

@@ -130,7 +130,9 @@ config :pleroma, Pleroma.Web.Endpoint,
     dispatch: [
       {:_,
        [
-         {"/api/fedsocket/v1", Pleroma.Web.FedSockets.IncomingHandler, []},
+         # FedSockets are commented out of the dispatch table on stable because they can't even
+         # fail properly when they are disabled. They will hang the connection instead of returning a 404.
+         #         {"/api/fedsocket/v1", Pleroma.Web.FedSockets.IncomingHandler, []},
          {"/api/v1/streaming", Pleroma.Web.MastodonAPI.WebsocketHandler, []},
          {"/websocket", Phoenix.Endpoint.CowboyWebSocket,
           {Phoenix.Transports.WebSocket,

config/description.exs

@@ -273,19 +273,6 @@ config :pleroma, :config_description, [
       }
     ]
   },
-  %{
-    group: :pleroma,
-    key: :fed_sockets,
-    type: :group,
-    description: "Websocket based federation",
-    children: [
-      %{
-        key: :enabled,
-        type: :boolean,
-        description: "Enable FedSockets"
-      }
-    ]
-  },
   %{
     group: :pleroma,
     key: Pleroma.Emails.Mailer,

docs/configuration/cheatsheet.md

@@ -219,16 +219,6 @@ config :pleroma, :mrf_user_allowlist, %{
 * `total_user_limit`: the number of scheduled activities a user is allowed to create in total (Default: `300`)
 * `enabled`: whether scheduled activities are sent to the job queue to be executed
 
-## FedSockets
-FedSockets is an experimental feature allowing for Pleroma backends to federate using a persistant websocket connection as opposed to making each federation a seperate http connection. This feature is currently off by default. It is configurable throught he following options.
-
-### :fedsockets
-* `enabled`: Enables FedSockets for this instance. `false` by default.
-* `connection_duration`: Time an idle websocket is kept open.
-* `rejection_duration`: Failures to connect via FedSockets will not be retried for this period of time.
-* `fed_socket_fetches` and `fed_socket_rejections`: Settings passed to `cachex` for the fetch registry, and rejection stacks. See `Pleroma.Web.FedSockets` for more details.
-
-
 ## Frontends
 
 ### :frontend_configurations