NetworkedMultiplayerPeer

Inherits: PacketPeer < Reference < Object

Inherited By: MultiplayerPeerGDNative, NetworkedMultiplayerCustom, NetworkedMultiplayerENet, WebRTCMultiplayer, WebSocketMultiplayerPeer

A high-level network interface to simplify multiplayer interactions.

Description

Manages the connection to network peers. Assigns unique IDs to each client connected to the server. See also MultiplayerAPI.

Note: The high-level multiplayer API protocol is an implementation detail and isn't meant to be used by non-Redot servers. It may change without notice.

Tutorials

Properties

bool

refuse_new_connections

false

TransferMode

transfer_mode

2

Methods

ConnectionStatus

get_connection_status ( ) const

int

get_packet_peer ( ) const

int

get_unique_id ( ) const

void

poll ( )

void

set_target_peer ( int id )

Signals

connection_failed ( )

Emitted when a connection attempt fails.

connection_succeeded ( )

Emitted when a connection attempt succeeds.

peer_connected ( int id )

Emitted when a remote peer connects.

peer_disconnected ( int id )

Emitted when a remote peer has disconnected.

server_disconnected ( )

Emitted by clients when the server disconnects.

Enumerations

enum TransferMode:

TransferMode TRANSFER_MODE_UNRELIABLE = 0

Packets are not acknowledged, no resend attempts are made for lost packets. Packets may arrive in any order. Potentially faster than TRANSFER_MODE_UNRELIABLE_ORDERED. Use for non-critical data, and always consider whether the order matters.

TransferMode TRANSFER_MODE_UNRELIABLE_ORDERED = 1

Packets are not acknowledged, no resend attempts are made for lost packets. Packets are received in the order they were sent in. Potentially faster than TRANSFER_MODE_RELIABLE. Use for non-critical data or data that would be outdated if received late due to resend attempt(s) anyway, for example movement and positional data.

TransferMode TRANSFER_MODE_RELIABLE = 2

Packets must be received and resend attempts should be made until the packets are acknowledged. Packets must be received in the order they were sent in. Most reliable transfer mode, but potentially the slowest due to the overhead. Use for critical data that must be transmitted and arrive in order, for example an ability being triggered or a chat message. Consider carefully if the information really is critical, and use sparingly.

enum ConnectionStatus:

ConnectionStatus CONNECTION_DISCONNECTED = 0

The ongoing connection disconnected.

ConnectionStatus CONNECTION_CONNECTING = 1

A connection attempt is ongoing.

ConnectionStatus CONNECTION_CONNECTED = 2

The connection attempt succeeded.

Constants

TARGET_PEER_BROADCAST = 0

Packets are sent to the server and then redistributed to other peers.

TARGET_PEER_SERVER = 1

Packets are sent to the server alone.

Property Descriptions

bool refuse_new_connections = false

  • void set_refuse_new_connections ( bool value )

  • bool is_refusing_new_connections ( )

If true, this NetworkedMultiplayerPeer refuses new connections.

TransferMode transfer_mode = 2

The manner in which to send packets to the target_peer. See TransferMode.

Method Descriptions

ConnectionStatus get_connection_status ( ) const

Returns the current state of the connection. See ConnectionStatus.

int get_packet_peer ( ) const

Returns the ID of the NetworkedMultiplayerPeer who sent the most recent packet.

int get_unique_id ( ) const

Returns the ID of this NetworkedMultiplayerPeer.

void poll ( )

Waits up to 1 second to receive a new network event.

void set_target_peer ( int id )

Sets the peer to which packets will be sent.

The id can be one of: TARGET_PEER_BROADCAST to send to all connected peers, TARGET_PEER_SERVER to send to the peer acting as server, a valid peer ID to send to that specific peer, a negative peer ID to send to all peers except that one. By default, the target peer is TARGET_PEER_BROADCAST.