js-smp-peer/lib/smpPeerServer.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var config_1 = require("./config");
var fs = require("fs");
var express = require("express");
var http = require("http");
var https = require("https");
// NOTE: Using `require` instead of `import` since something is wrong in the types of peer server
//  "node_modules/peer/index.d.ts:8:43 - error TS2709: "
//  "Cannot use namespace 'EventEmitter' as a type."
var expressPeerServer = require('peer').ExpressPeerServer;
var certDir = __dirname + "/../certs";
var keyPath = certDir + "/privkey.pem";
var certPath = certDir + "/cert.pem";
var errCodeFileNotFound = 'ENOENT';
/**
 * Run a peer server. `runServer` first try to load SSL a pair of cert and key from `certDir`.
 *  If it succeeds, the peer server runs with SSL. Otherwise, without SSL.
 */
function runServer() {
    var isSSLSupported;
    var key;
    var cert;
    try {
        key = fs.readFileSync(keyPath);
        cert = fs.readFileSync(certPath);
        isSSLSupported = true;
    }
    catch (err) {
        if (err.code === errCodeFileNotFound) {
            console.log("Couldn't find certs. Running without SSL...");
            isSSLSupported = false;
        }
        else {
            throw err;
        }
    }
    var app = express();
    var server;
    if (isSSLSupported) {
        server = https.createServer({ key: key, cert: cert }, app);
    }
    else {
        server = http.createServer(app);
    }
    var peerServer;
    if (isSSLSupported) {
        // Sanity check
        if (key === undefined || cert === undefined) {
            throw new Error('key or cert is undefined, but we should have it loaded');
        }
        peerServer = expressPeerServer(server, {
            ssl: { key: key.toString('utf8'), cert: cert.toString('utf8') },
        });
    }
    else {
        peerServer = expressPeerServer(server);
    }
    // TODO: Confirm this is correct
    app.use(config_1.defaultPeerServerConfig.path, peerServer);
    // FIXME: Remove it later when we don't need debugging
    app.use('/', express.static('./demo/'));
    server.listen(config_1.defaultPeerServerConfig.port);
    peerServer.on('connection', function (id) {
        console.log("A client connected : " + id);
    });
    peerServer.on('disconnect', function (id) {
        console.log("A client say ~ bye bye : " + id);
    });
    // TODO: Listen to more events
    console.log('PeerServer is ready!');
}
runServer();