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Speculatively performs SSL/TLS handshakes for hovered links to speed up browsing.
// ==UserScript==
// @name SSL Accelerator
// @description Speculatively performs SSL/TLS handshakes for hovered links to speed up browsing.
// @author Anon
// @version 0.1.8
// @license CC0 1.0 Universal; http://creativecommons.org/publicdomain/zero/1.0/
// @include *
// @require https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/URI.js/1.11.2/URI.min.js
// @grant GM_xmlhttpRequest
// @namespace https://greasyfork.org/users/4614
// ==/UserScript==
var alreadyHandshakedWith = {};
var requestStartTime = {};
var handshakeStartDelayTimerID = 0;
var currentHostname = (new URI(window.location.href)).hostname();
$("body").on("mouseenter mouseover", "a", function (e)
{
if (e.target.href == undefined)
{
//console.log("Ignoring link with undefined HREF property.");
return;
}
var targetURI = new URI(e.target.href);
var targetProtocol = targetURI.protocol();
var targetHostname = targetURI.hostname();
if (targetProtocol != "https" ||
targetHostname == currentHostname)
{
return;
}
if (alreadyHandshakedWith[targetHostname])
{
//console.log("Already started or completed a handshake with \"" + targetHostname + "\".");
return;
}
clearTimeout(handshakeStartDelayTimerID);
handshakeStartDelayTimerID = setTimeout(function ()
{
console.log("Handshaking with \"" + targetHostname + "\"..");
GM_xmlhttpRequest({
method: "HEAD",
url: "https://" + targetHostname,
onload: function()
{
console.log("Successfully handshaked with \"" + targetHostname + "\" in " + (Date.now() - requestStartTime[targetHostname]) + "ms.");
requestStartTime[targetHostname] = undefined;
},
});
requestStartTime[targetHostname] = Date.now();
alreadyHandshakedWith[targetHostname] = true;
}, 100);
});
$("body").on("mouseout", "a", function (e)
{
clearTimeout(handshakeStartDelayTimerID);
});