I'm using apprunner. The url is correct. It's an extreme case to illustrate the problem which is actually fairly common. When a host exists (is resolvable) but isn't running an http server (or it's server is down), we crash in nsresult nsHTTPChannel::ResponseCompleted(nsIChannel* aTransport) { return m_pHandler->ReleaseTransport(aTransport); } the raw pointer in m_pHandler is bad. We need to somehow "fail" when we run into a server that is resolvable, but not connectable on port 80. In the old world we would time out and eventually timeout with a "host not responding" msg.

This bug has been fixed on the M9 branch. I'll close it out when I merge the changes back onto the tip. -- rick

I've landed the M9 branch...

Bulk move of all Necko (to be deleted component) bugs to new Networking component.