Soap server not receiving the request

Question

I am using the soap server to get the data from the external data provider. The Soap server is initialized with the wsdl.xml file.

  location = 'http://localhost:8000/wsdl?wsdl';

    // modify the wsdl to have the correct host:port
    wsdl = wsdl.replace(wsdlURL, location);

    server = http.createServer(function (request, response) {
      response.setHeader('Access-Control-Allow-Origin', '*');
      response.setHeader('Access-Control-Request-Method', '*');
      response.setHeader('Access-Control-Allow-Methods', 'OPTIONS, GET');
      response.setHeader('Access-Control-Allow-Headers', '*');
      response.end("404: Not Found: " + request.url)
    })
      .on('error', function (e) {
        console.log("Error: " + e.message);
        console.log(e.stack);
      });

    server.listen(8000, 'localhost');

    soapServer = soap.listen(server, '/wsdl', myService, wsdl);
    soapServer.log = function (type, data) {
      console.log(type, data);
    };
    console.log('SOAP server started: http://localhost:8000/wsdl?wsdl');
  });

The app is working fine and it's receiving expected data.

But If I change the port from 8000 to any other port(ex: 8001), then the app is start on 8001 port but it is not receiving any data from the Data provider.

Is there any configuration I need to change/update such that the app should also work on 8001 port?