zlib#createDeflate TypeScript Examples

The following examples show how to use zlib#createDeflate. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: Connection.ts    From fosscord-server with GNU Affero General Public License v3.0 5 votes vote down vote up 
// TODO: check rate limit
// TODO: specify rate limit in config
// TODO: check msg max size

export async function Connection(
	this: WS.Server,
	socket: WebSocket,
	request: IncomingMessage
) {
	try {
		// @ts-ignore
		socket.on("close", Close);
		// @ts-ignore
		socket.on("message", Message);
		console.log(`[Gateway] Connections: ${this.clients.size}`);

		const { searchParams } = new URL(`http://localhost${request.url}`);
		// @ts-ignore
		socket.encoding = searchParams.get("encoding") || "json";
		if (!["json", "etf"].includes(socket.encoding)) {
			if (socket.encoding === "etf" && erlpack) {
				throw new Error(
					"Erlpack is not installed: 'npm i @yukikaze-bot/erlpack'"
				);
			}
			return socket.close(CLOSECODES.Decode_error);
		}

		// @ts-ignore
		socket.version = Number(searchParams.get("version")) || 8;
		if (socket.version != 8)
			return socket.close(CLOSECODES.Invalid_API_version);

		// @ts-ignore
		socket.compress = searchParams.get("compress") || "";
		if (socket.compress) {
			if (socket.compress !== "zlib-stream")
				return socket.close(CLOSECODES.Decode_error);
			socket.deflate = createDeflate({ chunkSize: 65535 });
			socket.deflate.on("data", (chunk) => socket.send(chunk));
		}

		socket.events = {};
		socket.member_events = {};
		socket.permissions = {};
		socket.sequence = 0;

		setHeartbeat(socket);

		await Send(socket, {
			op: OPCODES.Hello,
			d: {
				heartbeat_interval: 1000 * 30,
			},
		});

		socket.readyTimeout = setTimeout(() => {
			return socket.close(CLOSECODES.Session_timed_out);
		}, 1000 * 30);
	} catch (error) {
		console.error(error);
		return socket.close(CLOSECODES.Unknown_error);
	}
}