rename Connection to Router

Connection is more of a supervision concept than a server concept.
I should have a SWP of SWPs too, but I can't be bothered just yet.

src/msp_channel_man.erl

@@ -29,7 +29,7 @@
         {chan_pid :: pid()}).
 
 -record(route_info,
-        {conn_pid :: pid(),
+        {router :: pid(),
          socket :: gen_udp:socket(),
          unused_channels :: [integer()],
          used_channels :: #{integer() => #channel{}}}).
@@ -41,16 +41,16 @@
 
 %%% Service Interface
 
-update_router(OurPort, TheirIP, TheirPort, Conn, Sock) ->
+update_router(OurPort, TheirIP, TheirPort, Router, Sock) ->
     Route = #route{from = OurPort, to = {TheirIP, TheirPort}},
-    gen_server:cast(?MODULE, {update_router, Route, Conn, Sock}).
+    gen_server:cast(?MODULE, {update_router, Route, Router, Sock}).
 
 create_channel(OurPort, TheirIP, TheirPort) ->
     Route = #route{from = OurPort, to = {TheirIP, TheirPort}},
     gen_server:call(?MODULE, {create_channel, Route}).
 
-% Deliver messages on behalf of msp_connection, if it doesn't know where to
+% Deliver messages on behalf of msp_router, if it doesn't know where to send
-% send something.
+% something.
 dispatch_fallback(OurPort, TheirIP, TheirPort, ID, Packet) ->
     Route = #route{from = OurPort, to = {TheirIP, TheirPort}},
     gen_server:cast(?MODULE, {dispatch, Route, ID, Packet}).
@@ -89,8 +89,8 @@ handle_call(Unexpected, From, State) ->
     {noreply, State}.
 
 
-handle_cast({update_router, Route, Conn, Sock}, State) ->
+handle_cast({update_router, Route, Router, Sock}, State) ->
-    NewState = do_update_router(Route, Conn, Sock, State),
+    NewState = do_update_router(Route, Router, Sock, State),
     {noreply, NewState};
 handle_cast({dispatch, Route, ID, Packet}, State) ->
     NewState = do_dispatch(Route, ID, Packet, State),
@@ -149,13 +149,13 @@ do_enroll2(PID, State, Channels) ->
             State
     end.
 
-do_update_router(Route, Conn, Sock, State = #s{connections = Conns}) ->
+do_update_router(Route, Router, Sock, State = #s{connections = Conns}) ->
     case maps:find(Route, Conns) of
         {ok, _Info} ->
             io:format("Updating routes not yet implemented.~n", []),
             init:stop();
         error ->
-            NewConn = #route_info{conn_pid = Conn,
+            NewConn = #route_info{router = Router,
                                   socket = Sock,
                                   unused_channels = lists:seq(0, 255),
                                   used_channels = #{}},

src/msp_router.erl

@@ -2,7 +2,7 @@
 %%% Minimal Stream Protocol: Connection Worker
 %%% @end
 
--module(msp_connection).
+-module(msp_router).
 -vsn("0.1.0").
 -behavior(gen_server).
 -author("Jarvis Carroll <spiveehere@gmail.com>").
@@ -37,7 +37,7 @@
 
 % msp does not negotiate new connections, but once you have a
 % socket, and a host that knows you will be talking MSP, then a
-% new msp_connection can be initialized.
+% new msp_router can be initialized.
 begin_msp(Connection, OurSock, TheirIP, TheirPort, OurSide) ->
     % Transfer the socket to the gen_server. If it is
     % active then a bunch of messages will be received
@@ -59,7 +59,7 @@ start_link() ->
     gen_server:start_link(?MODULE, none, []).
 
 
-% TODO: Ask msp_connection_man for the socket and endpoint
+% TODO: SWP? SWP of SWPs?
 init(none) ->
     {ok, none}.