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import { Server as WebSocketServer } from "ws";
import { WebSocket, CLOSECODES } from "@fosscord/gateway";
import { Config, initDatabase } from "@fosscord/util";
import OPCodeHandlers, { Payload } from "./opcodes";
import { setHeartbeat } from "./util";
import * as mediasoup from "mediasoup";
import { types as MediasoupTypes } from "mediasoup";
import udp from "dgram";
import sodium from "libsodium-wrappers";
import { assert } from "console";
var port = Number(process.env.PORT);
if (isNaN(port)) port = 3004;
export class Server {
public ws: WebSocketServer;
public mediasoupWorkers: MediasoupTypes.Worker[] = [];
public mediasoupRouters: MediasoupTypes.Router[] = [];
public mediasoupTransports: MediasoupTypes.WebRtcTransport[] = [];
public mediasoupProducers: MediasoupTypes.Producer[] = [];
public mediasoupConsumers: MediasoupTypes.Consumer[] = [];
public decryptKey: Uint8Array;
public testUdp = udp.createSocket("udp6");
constructor() {
this.ws = new WebSocketServer({
port,
maxPayload: 4096,
});
this.ws.on("connection", async (socket: WebSocket) => {
await setHeartbeat(socket);
socket.on("message", async (message: string) => {
const payload: Payload = JSON.parse(message);
if (OPCodeHandlers[payload.op])
try {
await OPCodeHandlers[payload.op].call(this, socket, payload);
}
catch (e) {
console.error(e);
socket.close(CLOSECODES.Unknown_error);
}
else {
console.error(`Unimplemented`, payload);
socket.close(CLOSECODES.Unknown_opcode);
}
});
socket.on("close", (code: number, reason: string) => {
console.log(`client closed ${code} ${reason}`);
for (var consumer of this.mediasoupConsumers) consumer.close();
for (var producer of this.mediasoupProducers) producer.close();
for (var transport of this.mediasoupTransports) transport.close();
this.mediasoupConsumers = [];
this.mediasoupProducers = [];
this.mediasoupTransports = [];
})
});
this.testUdp.bind(60000);
this.testUdp.on("message", (msg, rinfo) => {
//random key from like, the libsodium examples on npm lol
//give me my remote port?
if (sodium.to_hex(msg) == "0001004600000001000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000") {
this.testUdp.send(Buffer.from([rinfo.port, 0]), rinfo.port, rinfo.address);
console.log(`got magic packet to send remote port? ${rinfo.address}:${rinfo.port}`);
return;
}
//Hello
if (sodium.to_hex(msg) == "0100000000000000") {
console.log(`[UDP] client helloed`);
return;
}
const nonce = Buffer.concat([msg.slice(-4), Buffer.from("\x00".repeat(20))]);
console.log(`[UDP] nonce for this message: ${nonce.toString("hex")}`);
console.log(`[UDP] message: ${sodium.to_hex(msg)}`);
// let encrypted;
// if (Buffer.from(msg).indexOf("\x81\xc9") == 0) {
// encrypted = msg.slice(0x18, -4);
// }
// else if (Buffer.from(msg).indexOf("\x90\x78") == 0) {
// encrypted = msg.slice(0x1C, -4);
// }
// else {
// encrypted = msg.slice(0x18, -4);
// console.log(`wtf header received: ${encrypted.toString("hex")}`);
// }
let encrypted = msg;
if (sodium.to_hex(msg).indexOf("80c8000600000001") == 0) {
//call status
encrypted = encrypted.slice(8, -4);
assert(encrypted.length == 40);
try {
const decrypted = sodium.crypto_secretbox_open_easy(encrypted, nonce, Buffer.from(this.decryptKey));
console.log("[UDP] [ call status ]" + decrypted);
}
catch (e) {
console.error(`[UDP] decrypt failure\n${e}\n${encrypted.toString("base64")}`);
}
return;
}
// try {
// const decrypted = sodium.crypto_secretbox_open_easy(encrypted, nonce, Buffer.from(this.decryptKey.map(x => String.fromCharCode(x)).join("")));
// console.log("[UDP] " + decrypted);
// }
// catch (e) {
// console.error(`[UDP] decrypt failure\n${e}\n${msg.toString("base64")}`);
// }
});
}
async listen(): Promise<void> {
// @ts-ignore
await initDatabase();
await Config.init();
await this.createWorkers();
console.log("[DB] connected");
console.log(`[WebRTC] online on 0.0.0.0:${port}`);
}
async createWorkers(): Promise<void> {
const numWorkers = 1;
for (let i = 0; i < numWorkers; i++) {
const worker = await mediasoup.createWorker({ logLevel: "debug", logTags: ["dtls", "ice", "info", "message", "bwe"] });
if (!worker) return;
worker.on("died", () => {
console.error("mediasoup worker died");
});
worker.observer.on("newrouter", async (router: MediasoupTypes.Router) => {
console.log("new router created [id:%s]", router.id);
this.mediasoupRouters.push(router);
router.observer.on("newtransport", async (transport: MediasoupTypes.WebRtcTransport) => {
console.log("new transport created [id:%s]", transport.id);
await transport.enableTraceEvent();
transport.on('dtlsstatechange', (dtlsstate) => {
console.log(dtlsstate);
});
transport.on("sctpstatechange", (sctpstate) => {
console.log(sctpstate);
});
router.observer.on("newrtpobserver", (rtpObserver: MediasoupTypes.RtpObserver) => {
console.log("new RTP observer created [id:%s]", rtpObserver.id);
// rtpObserver.observer.on("")
});
transport.on("connect", () => {
console.log("transport connect");
});
transport.observer.on("newproducer", (producer: MediasoupTypes.Producer) => {
console.log("new producer created [id:%s]", producer.id);
this.mediasoupProducers.push(producer);
});
transport.observer.on("newconsumer", (consumer: MediasoupTypes.Consumer) => {
console.log("new consumer created [id:%s]", consumer.id);
this.mediasoupConsumers.push(consumer);
consumer.on("rtp", (rtpPacket) => {
console.log(rtpPacket);
});
});
transport.observer.on("newdataproducer", (dataProducer) => {
console.log("new data producer created [id:%s]", dataProducer.id);
});
transport.on("trace", (trace) => {
console.log(trace);
});
this.mediasoupTransports.push(transport);
});
});
await worker.createRouter({
mediaCodecs: [
{
kind: "audio",
mimeType: "audio/opus",
clockRate: 48000,
channels: 2,
preferredPayloadType: 111,
},
],
});
this.mediasoupWorkers.push(worker);
}
}
}
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