106 lines
2.4 KiB
JavaScript
106 lines
2.4 KiB
JavaScript
"use strict";
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const WebSocket = require("ws");
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const BaseServer = require("./BaseServer");
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/** @typedef {import("../Server").WebSocketServerConfiguration} WebSocketServerConfiguration */
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/** @typedef {import("../Server").ClientConnection} ClientConnection */
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module.exports = class WebsocketServer extends BaseServer {
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static heartbeatInterval = 1000;
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/**
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* @param {import("../Server")} server
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*/
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constructor(server) {
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super(server);
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/** @type {import("ws").ServerOptions} */
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const options = {
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.../** @type {WebSocketServerConfiguration} */
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(this.server.options.webSocketServer).options,
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clientTracking: false,
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};
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const isNoServerMode =
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typeof options.port === "undefined" &&
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typeof options.server === "undefined";
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if (isNoServerMode) {
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options.noServer = true;
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}
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this.implementation = new WebSocket.Server(options);
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/** @type {import("http").Server} */
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(this.server.server).on(
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"upgrade",
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/**
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* @param {import("http").IncomingMessage} req
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* @param {import("stream").Duplex} sock
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* @param {Buffer} head
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*/
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(req, sock, head) => {
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if (!this.implementation.shouldHandle(req)) {
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return;
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}
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this.implementation.handleUpgrade(req, sock, head, (connection) => {
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this.implementation.emit("connection", connection, req);
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});
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}
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);
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this.implementation.on(
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"error",
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/**
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* @param {Error} err
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*/
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(err) => {
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this.server.logger.error(err.message);
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}
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);
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const interval = setInterval(() => {
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this.clients.forEach(
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/**
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* @param {ClientConnection} client
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*/
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(client) => {
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if (client.isAlive === false) {
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client.terminate();
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return;
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}
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client.isAlive = false;
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client.ping(() => {});
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}
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);
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}, WebsocketServer.heartbeatInterval);
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this.implementation.on(
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"connection",
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/**
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* @param {ClientConnection} client
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*/
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(client) => {
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this.clients.push(client);
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client.isAlive = true;
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client.on("pong", () => {
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client.isAlive = true;
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});
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client.on("close", () => {
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this.clients.splice(this.clients.indexOf(client), 1);
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});
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}
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);
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this.implementation.on("close", () => {
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clearInterval(interval);
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});
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}
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};
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