Method server

server.js:693–765

()

  }

  get server() {
    if (this._server) {
      return this._server;
    }

    this.start = Date.now();

    // Check for secure server requirements, otherwise use HTTP
    let { key, cert } = this.options.https;
    if(key && cert) {
      const { createSecureServer } = require("http2");

      let options = {
        allowHTTP1: true,

        // Credentials
        key: fs.readFileSync(key),
        cert: fs.readFileSync(cert),
      };
      this._server = createSecureServer(options, this.onRequestHandler.bind(this));
      this._serverProtocol = "https:";
    } else {
      const { createServer } = require("http");

      this._server = createServer(this.onRequestHandler.bind(this));
      this._serverProtocol = "http:";
    }

    this.portRetryCount = 0;
    this._server.on("error", (err) => {
      if (err.code == "EADDRINUSE") {
        if (this.portRetryCount < this.options.portReassignmentRetryCount) {
          this.portRetryCount++;
          debug(
            "Server already using port %o, trying the next port %o. Retry number %o of %o",
            err.port,
            err.port + 1,
            this.portRetryCount,
            this.options.portReassignmentRetryCount
          );
          this._serverListen(err.port + 1);
        } else {
          throw new Error(
            `Tried ${this.options.portReassignmentRetryCount} different ports but they were all in use. You can a different starter port using --port on the command line.`
          );
        }
      } else {
        this._serverErrorHandler(err);
      }
    });

    this._server.on("listening", (e) => {
      this.setupReloadNotifier();

      let logMessageCallback = typeof this.options.messageOnStart === "function" ? this.options.messageOnStart : () => false;
      let hosts = this.getHosts();
      let message = logMessageCallback({
        hosts,