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SSL Accelerator

Speculatively performs SSL/TLS handshakes for hovered links to speed up browsing.

  1. // ==UserScript==
  2. // @name           SSL Accelerator
  3. // @description    Speculatively performs SSL/TLS handshakes for hovered links to speed up browsing.
  4. // @author         Anon
  5. // @version        0.1.8
  6. // @license        CC0 1.0 Universal; http://creativecommons.org/publicdomain/zero/1.0/
  7. // @include        *
  8. // @require        https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js
  9. // @require        https://cdnjs.cloudflare.com/ajax/libs/URI.js/1.11.2/URI.min.js
  10. // @grant          GM_xmlhttpRequest
  11. // @namespace      https://greasyfork.org/users/4614
  12. // ==/UserScript==
  13.  
  14. var alreadyHandshakedWith = {};
  15. var requestStartTime = {};
  16. var handshakeStartDelayTimerID = 0;
  17.  
  18. var currentHostname = (new URI(window.location.href)).hostname();
  19.  
  20. $("body").on("mouseenter mouseover", "a", function (e)
  21. {
  22. 	if (e.target.href == undefined)
  23. 	{
  24. 		//console.log("Ignoring link with undefined HREF property.");
  25. 		return;
  26. 	}
  27. 	
  28. 	var targetURI = new URI(e.target.href);
  29. 	var targetProtocol = targetURI.protocol();
  30. 	var targetHostname = targetURI.hostname();
  31. 	
  32. 	if (targetProtocol != "https" ||  
  33. 		targetHostname == currentHostname)
  34. 	{
  35. 		return;
  36. 	}
  37. 	
  38. 	if (alreadyHandshakedWith[targetHostname])
  39. 	{
  40. 		//console.log("Already started or completed a handshake with \"" + targetHostname + "\".");
  41. 		return;
  42. 	}
  43. 	
  44. 	clearTimeout(handshakeStartDelayTimerID);
  45. 	
  46. 	handshakeStartDelayTimerID = setTimeout(function ()
  47. 	{
  48. 		console.log("Handshaking with \"" + targetHostname + "\"..");
  49. 		
  50. 		GM_xmlhttpRequest({
  51. 		
  52. 			method: "HEAD", 
  53. 			
  54. 			url: "https://" + targetHostname, 
  55. 			
  56. 			onload: function() 
  57. 			{
  58. 				console.log("Successfully handshaked with \"" + targetHostname + "\" in " + (Date.now() - requestStartTime[targetHostname]) + "ms.");
  59. 				requestStartTime[targetHostname] = undefined;
  60. 			},
  61. 			});
  62. 		
  63. 		requestStartTime[targetHostname] = Date.now();
  64. 		alreadyHandshakedWith[targetHostname] = true;
  65. 	}, 100);
  66. });
  67.  
  68. $("body").on("mouseout", "a", function (e)
  69. {
  70. 	clearTimeout(handshakeStartDelayTimerID);
  71. });