80 lines
2.1 KiB
TypeScript
80 lines
2.1 KiB
TypeScript
import WS from "ws";
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import { WebSocket } from "@fosscord/gateway";
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import { Send } from "../util/Send";
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import { CLOSECODES, OPCODES } from "../util/Constants";
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import { setHeartbeat } from "../util/Heartbeat";
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import { IncomingMessage } from "http";
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import { Close } from "./Close";
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import { Message } from "./Message";
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import { createDeflate } from "zlib";
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import { URL } from "url";
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var erlpack: any;
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try {
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erlpack = require("@yukikaze-bot/erlpack");
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} catch (error) {}
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// TODO: check rate limit
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// TODO: specify rate limit in config
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// TODO: check msg max size
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export async function Connection(
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this: WS.Server,
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socket: WebSocket,
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request: IncomingMessage
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) {
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try {
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// @ts-ignore
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socket.on("close", Close);
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// @ts-ignore
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socket.on("message", Message);
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console.log(`[Gateway] Connections: ${this.clients.size}`);
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const { searchParams } = new URL(`http://localhost${request.url}`);
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// @ts-ignore
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socket.encoding = searchParams.get("encoding") || "json";
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if (!["json", "etf"].includes(socket.encoding)) {
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if (socket.encoding === "etf" && erlpack) {
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throw new Error(
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"Erlpack is not installed: 'npm i @yukikaze-bot/erlpack'"
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);
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}
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return socket.close(CLOSECODES.Decode_error);
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}
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// @ts-ignore
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socket.version = Number(searchParams.get("version")) || 8;
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if (socket.version != 8)
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return socket.close(CLOSECODES.Invalid_API_version);
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// @ts-ignore
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socket.compress = searchParams.get("compress") || "";
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if (socket.compress) {
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if (socket.compress !== "zlib-stream")
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return socket.close(CLOSECODES.Decode_error);
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socket.deflate = createDeflate({ chunkSize: 65535 });
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socket.deflate.on("data", (chunk) => socket.send(chunk));
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}
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socket.events = {};
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socket.member_events = {};
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socket.permissions = {};
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socket.sequence = 0;
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setHeartbeat(socket);
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await Send(socket, {
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op: OPCODES.Hello,
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d: {
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heartbeat_interval: 1000 * 30,
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},
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});
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socket.readyTimeout = setTimeout(() => {
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return socket.close(CLOSECODES.Session_timed_out);
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}, 1000 * 30);
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} catch (error) {
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console.error(error);
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return socket.close(CLOSECODES.Unknown_error);
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}
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}
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