Function callback

bin/cli.js:111–119

(e, rsp)

require('http').createServer(function (request, response) {
    request.addListener('end', function () {
        var callback = function(e, rsp) {
          if (e && e.status === 404) {
              response.writeHead(e.status, e.headers);
              response.end("Not Found");
              log(request, response);
          } else {
              log(request, response);
          }
        };

        if (argv['spa'] && request.url.indexOf(".") == -1) {
            file.serveFile(argv['indexFile'], 500, {}, request, response);