mirror of
https://github.com/gorhill/uBlock.git
synced 2024-11-25 20:02:51 +01:00
53 lines
1.8 KiB
JavaScript
53 lines
1.8 KiB
JavaScript
/*******************************************************************************
|
|
|
|
uBlock Origin - a comprehensive, efficient content blocker
|
|
Copyright (C) 2015 Raymond Hill
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see {http://www.gnu.org/licenses/}.
|
|
|
|
Home: https://github.com/gorhill/uBlock
|
|
*/
|
|
|
|
// https://github.com/gorhill/uBlock/issues/533#issuecomment-164292868
|
|
// If WebRTC is supported, there won't be an exception if we
|
|
// try to instantiate a peer connection object.
|
|
|
|
// https://github.com/gorhill/uBlock/issues/533#issuecomment-168097594
|
|
// Because Chromium leaks WebRTC connections after they have been closed
|
|
// and forgotten, we need to test for WebRTC support inside an iframe, this
|
|
// way the closed and forgottetn WebRTC connections are properly garbage
|
|
// collected.
|
|
|
|
(function() {
|
|
'use strict';
|
|
|
|
var pc = null;
|
|
try {
|
|
var PC = self.RTCPeerConnection || self.webkitRTCPeerConnection;
|
|
if ( PC ) {
|
|
pc = new PC(null);
|
|
}
|
|
} catch (ex) {
|
|
console.error(ex);
|
|
}
|
|
if ( pc !== null ) {
|
|
pc.close();
|
|
}
|
|
|
|
window.top.postMessage(
|
|
pc !== null ? 'webRTCSupported' : 'webRTCNotSupported',
|
|
window.location.origin
|
|
);
|
|
})();
|