Save a json file content inside a variable

I have this url https://marketplace.envato.com/api/edge/audaciousleap/mnk79e4cztu4sgbyjqbzp... . I need to get that text. I have no idea how to do that, and it seems that it could be so simple. I have searched a lot through the web but found no real solution. Almost all involved jQuery, and i don't think that works with extendscript. The closest i got was this, but i got an error for direct ip not allowed.

reply = "";

conn = new Socket;

if (conn.open("marketplace.envato.com:80")) {

    // send a HTTP GET request

    conn.write("GET /api/edge/audaciousleap/mnk79e4cztu4sgbyjqbzpje0j8v914n0/verify-purchase:2acfeef0-a573-47 97-91bb-1b85855e7f62.json HTTP/1.0\n\n");

    // and read the server’s reply

    reply = conn.read(999999);

    alert(reply);

    conn.close();

}

I have this example from javascript tools guide CC at page 194.. The original code was:

reply = "";

conn = new Socket;

// access Adobe’s home page

if (conn.open ("www.adobe.com:80")) {

     // send a HTTP GET request

     conn.write ("GET /index.html HTTP/1.0\n\n");

     // and read the server’s reply

     reply = conn.read(999999);

     conn.close();

}