Javascript - how to check if IE window exists with a specific URL!

[yasar2002]

Hi All,

I am not an expert in Javascript.

Can I detect if 1 or more sessions of a website are open?

for example, if a session with port 7005 is open like this one below, then I want to assign the next port to this user in the second window of browser

http://90.97.8.0:7005/maximo/webclient/login/login.jsp

the next IE window should appear like this:

http://90.97.8.0:7006/maximo/webclient/login/login.jsp

or

http://90.97.8.0:7007/maximo/webclient/login/login.jsp

Please advise.

Thanks

Yasar

[Rowsdower!]

Client-side javascript won't allow script access to other windows or tabs (unless those windows or tabs were directly created by the script in question - which I believe from your question is NOT the case here).

That type of check would need to be done on the server side. I imagine you could do that pretty easily by IP address, if that helps.

[yasar2002]

Thanks for inputs,

I have a redirector application written in a JSP page.

This contains an array that holds 4 URLs in the code mentioned below.

100+ users access it to login to maximo.

I want to make sure if 1 user launches two login sessions i.e., 2 IE windows, both of them should be different ports, otherwise system will not work.

Can you put some more light on this and give some guideline what my approach should be?

<%@page import="java.net.HttpURLConnection"%>
<%@page import="java.net.URL"%>


<%

   String[] maxServer = { "90.97.8.0:7005/maximo", "90.97.8.0:7006/maximo" , "90.97.8.0:7007/maximo", "90.97.8.0:7008/maximo"};
   String Server = "";
   String errServer = "90.97.8.0:7001";
   
   String accessCount = (String) application.getAttribute("accessCount");
   if (accessCount == null) {
      accessCount = "0";
   }

   int i = Integer.parseInt(accessCount);;
   int sIndex = 0;
   String path ="";
   int counter=0;
   boolean error=false;
   while(counter < maxServer.length){
      try {
         sIndex = i % (maxServer.length );
         Server = maxServer[sIndex];
         path = "http://" + Server + "/webclient/login/login.jsp";
         URL url = new URL(path);
         HttpURLConnection conn = (HttpURLConnection) url.openConnection();
         conn.setRequestMethod("POST");
         conn.setDoOutput(true);
         conn.setDoInput(true);
         conn.connect();
         conn.disconnect();
         conn=null;
         break;
      } catch (Exception e) {
         i++;
         if(counter==maxServer.length-1){
            error=true;
            break;
         }
         counter++;
      }
   }
   application.setAttribute("accessCount", String.valueOf(i + 1));   
   response.setStatus(301);
   response.setHeader( "Connection", "close" );
   
   if(!error){
      response.setHeader( "Location", "http://" + Server + "/webclient/login/login.jsp");
   } else {
      response.setHeader( "Location", "http://" + errServer + "/maximo/webclient/login/error.html" );
   }
%>