andrade-soulseek-downloader/dist/slsk-client/listen.js

Simple, safe Soulseek download library with built-in rate limiting to prevent bans

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.Listen = void 0;
const events_1 = require("events");
const net = __importStar(require("net"));
const messages_1 = require("./messages");
const debug = (msg) => {
    if (process.env.DEBUG?.includes('slsk:listen')) {
        console.log(`[slsk:listen] ${msg}`);
    }
};
class Listen extends events_1.EventEmitter {
    port;
    server;
    constructor(port) {
        super();
        this.port = port;
        this.server = net.createServer((c) => {
            let user;
            const msgs = new messages_1.Messages();
            c.on('data', chunk => {
                msgs.write(chunk);
            });
            c.on('error', err => {
                debug(`listen connection error ${err.code}`);
            });
            msgs.on('message', (msg) => {
                const size = msg.int32();
                if (size < 4)
                    return;
                if (!user) {
                    const code = msg.int8();
                    switch (code) {
                        case 0: {
                            const token = msg.int32();
                            debug(`recv Pierce Firewall, token: ${token}`);
                            break;
                        }
                        case 1: {
                            user = msg.str();
                            const type = msg.str();
                            const token = msg.int32();
                            debug(`peerInit ${user}, type ${type}, token ${token}`);
                            this.emit('new-peer', {
                                socket: c,
                                peer: { user, type, token }
                            });
                            break;
                        }
                        default: {
                            debug('unattended case.');
                        }
                    }
                }
            });
            c.on('end', () => {
                debug('client disconnected');
            });
        });
        this.server.on('error', err => {
            debug(`Listen Server Error ${err}`);
        });
        this.server.listen(this.port, '0.0.0.0', () => {
            debug(`Listen peer connections on port ${this.port}`);
        });
    }
    destroy() {
        if (this.server) {
            this.server.close(() => debug('Listen peer connections server closed'));
        }
    }
}
exports.Listen = Listen;
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