nsIHttpPushListener
Used for triggering when a HTTP/2 push is received.
When provided as a notificationCallback to an httpChannel, this.onPush()
will be invoked when there is a >= Http2 push to that
channel. The push may be in progress.
The consumer must start the new channel in the usual way by calling
pushChannel.AsyncOpen with a nsIStreamListener object that
will receive the normal sequence of OnStartRequest(),
0 to N OnDataAvailable(), and onStopRequest().
The new channel can be canceled after the AsyncOpen if it is not wanted.
| associatedChannel | the monitor channel that was recieved on |
| pushChannel | a channel to the resource which is being pushed |