Triggering lotus script agents and obtaining their response on the XPage using Server side javascript - An XMLHTTPRequest equivalent

Triggering agents from server side javascript in XPages is easy. How ever obtaining the response from the agents once the lotus script agent completes execution and displaying the same on the xpage was always a challenge to me. The following is a way helped me achieve it,

/***************************************************/
importPackage(java.net);
importPackage(java.io);

//create a url object by passing the lotusscript agent's url and ensure that you have some print statements in your agent
var agent:URL = new URL("Agent URL");
//create a connection with the agent's url provided
var agentConnection:URLConnection = agent.openConnection();
//open a buffered reader that gets the stream of response from the agent connection        
var inputReader:BufferedReader = new BufferedReader(new InputStreamReader(agentConnection.getInputStream()));
//read the output line by line and store them in a string
var res:String="";
while ((inputLine = inputReader.readLine()) != null) {
     res+=inputLine;
} 
//update the result to a output field on the XPage to view the same visually
getComponent("output").setValue(res);

/***************************************************/


This attempt was successful and I was able to recieve responses on the XPage but is a Synchronous way. Hence you may have to wait until the agent gets executed and the response is obtained.

Am yet to find the same to do in a Asynchronous way.

Hope this helps :)