web/xynt/xynt-http-streaming.js

   1 function http_streaming(doc)
   2 {
   3     this.doc = doc;
   4     this.keepalive_old = -1;
   5     this.keepalive_new = -1;
   6     this.keepalives_equal = 0;
   7     this.ifra = doc.createElement("iframe");
   8     this.ifra.style.visibility = "hidden";
   9     doc.body.appendChild(this.ifra);
  10     // this.ifra.contentWindow.onload = function () {
  11     //     this.ifra.contentWindow.location.href = 'winstream_rdxxx.php';
  12     // }
  13
  14 }
  15
  16 http_streaming.prototype = {
  17     doc:               null,
  18     ifra:              null,
  19     keepalive_old:    -1,
  20     keepalive_new:    -1,
  21     keepalives_equal:  0,
  22     keepalives_eq_max: 6,
  23
  24     start: function(page) {
  25         this.ifra.contentWindow.location.href = page;
  26     },
  27
  28     watchdog: function () {
  29         /* +this.keepalives_equal */
  30         console.log("watchdog ");
  31         if (this.keepalive_old == this.keepalive_new) {
  32             this.keepalives_equal++;
  33         }
  34         else {
  35             this.keepalives_equal = 0;
  36         }
  37
  38         if (this.keepalives_equal > this.keepalives_eq_max) {
  39             console.log("MAX ACHIEVED "+this.keepalives_equal);
  40         }
  41         else {
  42             setTimeout(function(obj) { obj.watchdog() }, 2000, this);
  43         }
  44     },
  45
  46     keepalive: function () {
  47         this.keepalive_new++;
  48     }
  49
  50 }