Method start

packages/utils/httpServer.ts:150–178

(options: { port?: number, preferredPort?: number, host?: string } = {})

  }

  async start(options: { port?: number, preferredPort?: number, host?: string } = {}): Promise<void> {
    assert(!this._started, 'server already started');
    this._started = true;

    const host = options.host;
    if (options.preferredPort) {
      try {
        await startHttpServer(this._server, { port: options.preferredPort, host });
      } catch (e) {
        if (!e || !e.message || !e.message.includes('EADDRINUSE'))
          throw e;
        await startHttpServer(this._server, { host });
      }
    } else {
      await startHttpServer(this._server, { port: options.port, host });
    }

    const address = this._server.address();
    assert(address, 'Could not bind server socket');
    if (typeof address === 'string') {
      this._urlPrefixPrecise = address;
      this._urlPrefixHumanReadable = address;
    } else {
      this._port = address.port;
      this._urlPrefixPrecise = `http://${urlHostFromAddress(address)}:${address.port}`;
      this._urlPrefixHumanReadable = `http://${host ?? 'localhost'}:${address.port}`;
      this._allowedHosts = computeAllowedHosts(host, address.address);
    }
  }

  async stop() {
    await new Promise(cb => this._server!.close(cb));