1 files changed, 94 insertions, 0 deletions
diff --git a/src/gateway/events/Connection.ts b/src/gateway/events/Connection.ts
new file mode 100644
index 00000000..508b4741
--- /dev/null
+++ b/src/gateway/events/Connection.ts
@@ -0,0 +1,94 @@
+import WS from "ws";
+import { WebSocket } from "@fosscord/gateway";
+import { Send } from "../util/Send";
+import { CLOSECODES, OPCODES } from "../util/Constants";
+import { setHeartbeat } from "../util/Heartbeat";
+import { IncomingMessage } from "http";
+import { Close } from "./Close";
+import { Message } from "./Message";
+import { createDeflate } from "zlib";
+import { URL } from "url";
+let erlpack: any;
+try {
+	erlpack = require("@yukikaze-bot/erlpack");
+} catch (error) {}
+
+// 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);
+		
+		if(process.env.WS_LOGEVENTS)
+		[
+			"close",
+			"error",
+			"upgrade",
+			//"message",
+			"open",
+			"ping",
+			"pong",
+			"unexpected-response"
+		].forEach(x=>{
+			socket.on(x, y => console.log(x, y));
+		});
+
+		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);
+	}
+}