Don't touch anything. It works.

multiplayer_client.gd

@@ -23,7 +23,7 @@ func _ready():
 	signaller.connect("answer_received", self, "answer_received")
 	signaller.connect("candidate_received", self, "candidate_received")
 
-	signaller.connect("lobby_joined", self, "_lobby_joined")
+	signaller.connect("peer_id_set", self, "_peer_id_set")
 	# connect("lobby_sealed", self, "lobby_sealed")
 	signaller.connect("peer_joined", self, "_peer_joined")
 	# connect("peer_disconnected", self, "peer_disconnected")
@@ -38,10 +38,9 @@ func connect_to_signaller():
 	signaller.connect_to_websocket_signaller(multiplayer_url)
 
 func _create_peer(peer_id):
-	print("_create_peer: %d" % peer_id)
+	# if peer_id == signaller.peer_id: return
-	if peer_id == signaller.peer_id: return
 	var peer: WebRTCPeerConnection = WebRTCPeerConnection.new()
-	print("New Net Peer %s with peer_id %d" % [peer, peer_id])
+	print("New Net Peer with peer_id %d" % [peer_id])
 	var _peer_init_results = peer.initialize({"iceServers": webrtc_ice_servers})
 	peer.connect("session_description_created", self, "_offer_created", [peer_id])
 	peer.connect("ice_candidate_created", self, "_new_ice_candidate", [peer_id])
@@ -68,8 +67,8 @@ func _offer_created(type, data, peer_id):
 	else:
 		signaller.send_answer(peer_id, data)
 
-func _lobby_joined(id, peer_id):
+func _peer_id_set(peer_id):
-	print("Connected to lobby %s as peer %d" % [id, peer_id])
+	print("Peer ID received %s - setting up to peer..." % [peer_id])
 	mp.initialize(peer_id, true)
 	get_tree().network_peer = mp
 
@@ -89,6 +88,8 @@ func offer_received(data):
 	if mp.has_peer(id):
 		print("Setting offer remote description: %s" % JSON.print(data))
 		mp.get_peer(id).connection.set_remote_description("offer", data["offer"])
+	else:
+		print("Received an offer for a peer with ID %s that hasn't been added" % id)
 
 func answer_received(data):
 	var id = data["peerId"]

server.ts

@@ -185,7 +185,7 @@ class Lobby {
       }),
     );
     this.clients.forEach((c) =>
-      c.send(buildMessage("peer_joined", {
+      client.send(buildMessage("peer_joined", {
         id: c.id,
         name: c.name,
         peerId: c.peerId,
@@ -217,7 +217,6 @@ function onMessage(client: Client, ev: MessageEvent) {
   if (ev.data === "lobby_create") client.lobbyCreate();
   if (ev.data === "lobby_leave") client.lobbyLeave();
   if (ev.data === "request_lobby_list") client.lobbyList();
-  if (ev.data === "request_peer_list") client.clientList();
   if (ev.data.startsWith("lobby_join:")) {
     const id = ev.data.substr(11);
     const lobby = allLobbies.get(id);
@@ -233,15 +232,16 @@ function onMessage(client: Client, ev: MessageEvent) {
       if (typeof data.data === "object") {
         const subdata = data.data;
         if (typeof subdata["peerId"] === "number") {
-          const peerId: number = subdata["peerId"];
+          const destPeerId: number = subdata["peerId"];
-          // const payload = Object.assign({}, data);
-          // payload.data.peerId = client.peerId;
           for (const iClient of client.lobby?.clients.values() || []) {
-            if (iClient.peerId == peerId) {
+            if (iClient.peerId == destPeerId) {
+              const payload = Object.assign({}, data);
+              const srcPeerId = client.peerId;
+              payload.data.peerId = srcPeerId;
               console.log(
-                `Forwarding WebRTC Negotiation Message from peer ${client.peerId} to peer ${peerId}...`,
+                `Forwarding WebRTC Negotiation Message from peer ${srcPeerId} to peer ${destPeerId}...`,
               );
-              iClient.send(ev.data);
+              iClient.send(payload);
               break;
             }
           }

signaller_client.gd

@@ -15,6 +15,8 @@ signal peer_left(id)
 signal candidate_received(data)
 signal offer_received(data)
 signal answer_received(data)
+signal client_id_set(client_id)
+signal peer_id_set(peer_id)
 signal websocket_connected
 signal websocket_disconnected
 
@@ -74,7 +76,6 @@ func _send(s: String):
 
 func _parse_msg():
 	var msg: String = ws.get_peer(1).get_packet().get_string_from_utf8()
-	print("Signaller received message: %s" % msg)
 	if msg.begins_with("json:"):
 		var data = JSON.parse(msg.substr(5))
 		if data.error == OK:
@@ -84,10 +85,17 @@ func _parse_msg():
 
 func handle_message(data: Dictionary):
 	match data["type"]:
-		"your_id": client_id = data["data"]
+		"your_id":
-		"your_peer_id": peer_id = data["data"]
+			client_id = data["data"]
+			emit_signal("client_id_set", client_id)
+		"your_peer_id":
+			peer_id = int(data["data"])
+			emit_signal("peer_id_set", peer_id)
+
+		"lobby_list": emit_signal("lobby_new", data["data"])
 		"lobby_new": emit_signal("lobby_new", [{"id": data["id"], "name": data["name"]}])
 		"lobby_delete": emit_signal("lobby_delete", data["id"])
+
 		"lobby_joined":
 			lobby_id = data["id"]
 			peer_id = data["peerId"]
@@ -95,10 +103,10 @@ func handle_message(data: Dictionary):
 		"lobby_left":
 			lobby_id = null
 			emit_signal("lobby_left", data["id"])
-		"lobby_list": emit_signal("lobby_new", data["data"])
+
-		"peer_list": emit_signal("peer_joined", data["data"])
 		"peer_joined": emit_signal("peer_joined", [{"id": data["id"], "name": data["name"], "peerId": data["peerId"]}])
 		"peer_left": emit_signal("peer_left", data["id"])
+
 		"candidate": 
 			print("Candidate received - Data: %s" % JSON.print(data["data"]))
 			emit_signal("candidate_received", data["data"])
@@ -108,6 +116,7 @@ func handle_message(data: Dictionary):
 		"answer":
 			print("Answer received - Data: %s" % JSON.print(data["data"]))
 			emit_signal("answer_received", data["data"])
+
 		_: print("Unhandled Message - Data: %s" % JSON.print(data))
 
 func send_candidate(peerId, mid, index, sdp) -> int: