PlayFramework 2.2 scala close WebSocket connection - scala

Question

How can I close a WebSocket connection? The example on the documentation works if you want to close it immediately.
But how about the following case: I want to close the connection when some condition occurs in the future. For instance, when I receive a certain message from the client.
def indexWS = WebSocket.using[String] {
request => {
var channel: Option[Concurrent.Channel[String]] = None
var outEnumerator: Enumerator[String] = Concurrent.unicast(c => channel = Some(c))
val myIteratee: Iteratee[String, Unit] = Iteratee.foreach[String] {gotString => {
// received a string from the client
if (gotString == "close_me") {
// outEnumerator = Enumerator.eof // doesn't work
// outEnumerator >>> Enumerator.eof // doesn't work
}
}}
(myIteratee, outEnumerator)
}
}
Thank you for your help!

Answer 1

I got it: I had to go through the channel that I opened at
var outEnumerator: Enumerator[String] = Concurrent.unicast(c => channel = Some(c))
and the commented out block would become
if (gotString == "close_me") {
channel.foreach(_.eofAndEnd())
}
which will push an EOF through the enumerator and close the connection.