The last "when" sent from the listener

This is to react to comet-requests timing out. When the timeout specified in LiftRules#cometProcessingTimeout occurs one may override this to send a message to the user informing of the timeout.

Do NOT manipulate actor-state here. If you want to manipulate state, send the actor a new message.

Typical example would be:

  override def cometTimeoutHandler(): JsCmd = {
    Alert("Timeout processing comet-request, timeout is: " + cometProcessingTimeout + "ms")
}

This is to react to comet-actors timing out while initial rendering, calls to render(). When the timeout specified in LiftRules#cometRenderTimeout occurs one may override this to customise the output.

Do NOT manipulate actor-state here. If you want to manipulate state, send the actor a new message.

Typical example would be:

  override def renderTimeoutHandler(): Box[NodeSeq] = {
    Full(<div>Comet {this.getClass} timed out, timeout is {cometRenderTimeout}ms</div>)
}

Poke the CometActor and cause it to do a partial update Noop which will have the effect of causing the component to redisplay any Wiring elements on the component. This method is Actor-safe and may be called from any thread, not just the Actor's message handler thread.

If the predicate cell changes, the Dependent will be notified

Is this CometActor going to capture the initial Req object? If yes, override this method and return true and override captureInitialReq to capture the Req. Why have to explicitly ask for the Req? In order to send Req instances across threads, the Req objects must be snapshotted which is the process of reading the POST or PUT body from the HTTP request stream. We don't want to do this unless we have to, so by default the Req is not snapshotted/sent. But if you want it, you can have it.