Calling http service not working

I am trying to connect to outbound service and I get this error:

{"ERROR":"HttpClient.request: request failed. The following error occured: unable to establish connection to http://api.openweathermap.org:80 - internal error code: connection failed"}

I tried several variants but it does not work.

Service url:

http://api.openweathermap.org/data/2.5/weather?q=London,uk&appid=bd82977b86bf27fb59a04b61b657fb6f

.xshttpdest file:

host = "http://api.openweathermap.org";

port = 80;

description = "Weather";

useSSL = false;

pathPrefix = "data/2.5";

authType = none;

useProxy = false;

proxyHost = "";

proxyPort = 0;

timeout = 0;

.xsjs file:

    var destination;

    var client;

    var request;

    //Read the input employee number which is to be read

    try{

        //Reading the destination properties

        destination = $.net.http.readDestination("s0015145715trial.development.machines.services","gate");

          //Creating HTTP Client

          client = new $.net.http.Client();

          //Creating Request

          request = new $.web.WebRequest($.net.http.GET,"weather?q=London,uk&appid=bd82977b86bf27fb59a04b61b657fb6f");

          client.request(request,destination);

          //Getting the response body and setting as output data

          $.response.setBody(client.getResponse().body.asString());

    }

    catch(errorObj){

      $.response.setBody(JSON.stringify({

      ERROR : errorObj.message

      }));

    }