class-description NEWS COMMUNITY STORE TUTORIALS SIGN UP LOGIN LOGOUT ROKOJORI NEWSLETTER SIGN UP LOGIN LOGOUT NEWS COMMUNITY STORE TUTORIALS TOGGLE FULLSCREEN VOLLBILD AN/AUS ObjectRefCounted UDPServer
Helper class to implement a UDP server.

A simple server that opens a UDP socket and returns connected PacketPeerUDP upon receiving new packets. See also PacketPeerUDP.connect_to_host.

After starting the server (listen), you will need to poll it at regular intervals (e.g. inside Node._process) for it to process new packets, delivering them to the appropriate PacketPeerUDP, and taking new connections.

Below a small example of how it can be used:

# server_node.gd class_name ServerNode extends Node var server := UDPServer.new() var peers = [] func _ready(): server.listen(4242) func _process(delta): server.poll() # Important! if server.is_connection_available(): var peer: PacketPeerUDP = server.take_connection() var packet = peer.get_packet() print("Accepted peer: %s:%s" % [peer.get_packet_ip(), peer.get_packet_port()]) print("Received data: %s" % [packet.get_string_from_utf8()]) # Reply so it knows we received the message. peer.put_packet(packet) # Keep a reference so we can keep contacting the remote peer. peers.append(peer) for i in range(0, peers.size()): pass # Do something with the connected peers.
# client_node.gd class_name ClientNode extends Node var udp := PacketPeerUDP.new() var connected = false func _ready(): udp.connect_to_host("127.0.0.1", 4242) func _process(delta): if !connected: # Try to contact server udp.put_packet("The answer is... 42!".to_utf8_buffer()) if udp.get_available_packet_count() > 0: print("Connected: %s" % udp.get_packet().get_string_from_utf8()) connected = true
int max_pending_connections<>():int

Define the maximum number of pending connections, during poll, any new pending connection exceeding that value will be automatically dropped. Setting this value to 0 effectively prevents any new pending connection to be accepted (e.g. when all your players have connected).

 int get_local_port<>():int

Returns the local port this server is listening to.

 bool is_connection_available<>():bool

Returns true if a packet with a new address/port combination was received on the socket.

 bool is_listening<>():bool

Returns true if the socket is open and listening on a port.

 Error listen<>( int port=, port:int=, String bind_address="*", bind_address:String="*", ):Error

Starts the server by opening a UDP socket listening on the given port. You can optionally specify a bind_address to only listen for packets sent to that address. See also PacketPeerUDP.bind.

 Error poll<>():Error

Call this method at regular intervals (e.g. inside Node._process) to process new packets. And packet from known address/port pair will be delivered to the appropriate PacketPeerUDP, any packet received from an unknown address/port pair will be added as a pending connection (see is_connection_available, take_connection). The maximum number of pending connection is defined via max_pending_connections.

 void stop<>():void

Stops the server, closing the UDP socket if open. Will close all connected PacketPeerUDP accepted via take_connection (remote peers will not be notified).

 PacketPeerUDP take_connection<>():PacketPeerUDP

Returns the first pending connection (connected to the appropriate address/port). Will return null if no new connection is available. See also is_connection_available, PacketPeerUDP.connect_to_host.


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