Godot Version
3.6
Question
Hey! Using a dedicated server with websockets for my multiplayer game. The architecture consists of a gateway, an authenticator, a game server and the clients. The gateway, game server and clients are to use websockets, while the authenticator just uses NetworkedMultiplayerENet.
The clients connect to the gateway first to log in. Here’s the client-side code for logging in (the client connects to the gateway once they enter their credentials.)
# When ready, stop this node from running the _process function
func _ready():
set_process(false)
get_tree().connect("connected_to_server", self, "_connectionSucceeded")
get_tree().connect("connection_failed", self, "_connectionFailed")
get_tree().connect("server_disconnected", self, "_serverDisconnected")
# Every frame, poll the custom multiplayer instance if it exists and has peers
func _process(_delta):
if custom_multiplayer==null:
return
if not custom_multiplayer.network_peer:
return;
custom_multiplayer.poll()
client.poll()
# Connects to the gateway server
func connectToServer(_username, _password, _newAccount):
client = WebSocketClient.new()
var err = client.connect_to_url("[myPublicIP]:1910", PoolStringArray(), true)
if err != OK:
print("Unable to connect")
return
get_tree().network_peer = client
set_process(true)
# Reinitialises the high-level multiplayer instance and custom multiplayer API
gatewayAPI = MultiplayerAPI.new()
# Stores the locally stored username, password and newAccount variables in the corresponding global variables
username = _username
password = _password
newAccount = _newAccount
# Initialises the custom multiplayer API
custom_multiplayer = gatewayAPI
custom_multiplayer.root_node = self
custom_multiplayer.network_peer = client
# Outputs that the connection to the gateway failed
func _connectionFailed():
print("Failed to connect to login server")
func _serverDisconnected():
print("Login server disconnected")
# Outputs that the connection to the gateway succeeded and sends a login or account registration request depending on the user's selection
func _connectionSucceeded():
print("Successfully connected to login server")
if newAccount:
requestCreateAccount()
else:
requestLogin()
# Sends a login request to the gateway
func requestLogin():
print("Connecting to gateway to request login")
rpc_id(1, "loginRequest", username, password)
username = ""
password = ""
Here is the gateway’s code:
# When all nodes are loaded, start the server
func _ready():
startServer()
# Poll the custom multiplayer instance every frame
func _process(_delta):
if not custom_multiplayer.network_peer:
return;
custom_multiplayer.poll()
gatewayServer.poll()
# Start the server
func startServer():
gatewayServer = WebSocketServer.new()
var err = gatewayServer.listen(1910, PoolStringArray(), true)
if err != OK:
print("Unable to start server")
set_process(false)
return
get_tree().network_peer = gatewayServer
get_tree().connect("network_peer_connected", self, "_peerConnected")
get_tree().connect("network_peer_disconnected", self, "_peerDisconnected")
# Initialises the custom multiplayer instance
custom_multiplayer = gatewayAPI
custom_multiplayer.root_node = self
custom_multiplayer.network_peer = gatewayServer
print("Gateway server started")
func _peerConnected(playerID):
print("User "+str(playerID)+" connected")
func _peerDisconnected(playerID):
print("User "+str(playerID)+" disconnected")
# Receives login requests from the players and sends them to the authenticator
remote func loginRequest(username, password):
print("Login request received")
var playerID = custom_multiplayer.get_rpc_sender_id()
Authenticate.authenticatePlayer(username, password, playerID)
I keep getting the following two errors when I try logging in on the client, the first error being on the gateway and the second on the client.
Gateway error:
"_process_rpc: RPC 'loginRequest' is not allowed on node /root from: 987201720. Mode is 0, master is 1."
Client error:
"_process_confirm_path: Invalid packet received. Tries to confirm a path which was not found in cache."
I’m assuming this means that something happens to the packet sent when calling rpc_id on the client, but I’m really not sure. As seen in the gateway’s code, I do use the remote keyword on the loginRequest function.
I followed a tutorial and first implemented all of my code using NetworkedMultiplayerENet, and now I’m changing it to use WebSockets so that the game can be played on a browser.
What’s happening? 