1 files changed, 84 insertions, 0 deletions
diff --git a/src/gateway/events/Connection.ts b/src/gateway/events/Connection.ts
new file mode 100644
index 00000000..bed3cf44
--- /dev/null
+++ b/src/gateway/events/Connection.ts
@@ -0,0 +1,84 @@
+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 { Deflate, Inflate } from "fast-zlib";
+import { URL } from "url";
+import { Config } from "@fosscord/util";
+var 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
+) {
+ const forwardedFor = Config.get().security.forwadedFor;
+ const ipAddress = forwardedFor ? request.headers[forwardedFor] as string : request.socket.remoteAddress;
+
+ socket.ipAddress = ipAddress;
+
+ try {
+ // @ts-ignore
+ socket.on("close", Close);
+ // @ts-ignore
+ socket.on("message", Message);
+ console.log(`[Gateway] New connection from ${socket.ipAddress}, total ${this.clients.size}`);
+
+ const { searchParams } = new URL(`http://localhost${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);
+ }
+
+ 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 = new Deflate();
+ socket.inflate = new Inflate();
+ }
+
+ 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);
+ }
+}
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