Base class for WebSocket server and client. Base class for WebSocket server and client, allowing them to be used as multiplayer peer for the [MultiplayerAPI]. [b]Note:[/b] When exporting to Android, make sure to enable the [code]INTERNET[/code] permission in the Android export preset before exporting the project or using one-click deploy. Otherwise, network communication of any kind will be blocked by Android. Returns the [WebSocketPeer] associated to the given [code]peer_id[/code]. Configures the buffer sizes for this WebSocket peer. Default values can be specified in the Project Settings under [code]network/limits[/code]. For server, values are meant per connected peer. The first two parameters define the size and queued packets limits of the input buffer, the last two of the output buffer. Buffer sizes are expressed in KiB, so [code]4 = 2^12 = 4096 bytes[/code]. All parameters will be rounded up to the nearest power of two. [b]Note:[/b] Web exports only use the input buffer since the output one is managed by browsers. Emitted when a packet is received from a peer. [b]Note:[/b] This signal is only emitted when the client or server is configured to use Godot multiplayer API.