[1] [CITE@en[Web Applications 1.0 r7502     Provide a way for authors to broadcast to many ports without memory leaks.]]
( ([TIME[2012-11-03 07:32:00 +09:00]] 版))
<http://html5.org/tools/web-apps-tracker?from=7501&to=7502>

[2] [CITE[''''''[''''''whatwg'''''']'''''' Define MessagePort.isConnected or MessagePort.ondisconnect]]
( ([TIME[2012-11-03 07:40:59 +09:00]] 版))
<http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2012-November/037774.html>