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POCan I use a single Play WebSocket for both broadcasting and private messages?
 

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  1. POCan I use a single Play WebSocket for both broadcasting and private messages?
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    <p>I need to send a private response to the client for which I'm currently handling a Play WebSocket message, while for other messages I need to broadcast responses to all clients.</p> <p>In the Play chat example, incoming messages <a href="https://github.com/playframework/playframework/blob/master/samples/scala/websocket-chat/app/models/ChatRoom.scala" rel="nofollow noreferrer">are immediately offloaded to a single Actor</a>:</p> <pre><code>case Connected(enumerator) =&gt; // Create an Iteratee to consume the feed, assuming all requests have // a JSON "text" node, and delegate all to the Akka Actor: val iteratee = Iteratee.foreach[JsValue] { event =&gt; default ! Talk(username, (event \ "text").as[String]) }.map { _ =&gt; default ! Quit(username) } (iteratee,enumerator) </code></pre> <p>Above, once the connection is approved <code>enumerator</code> is passed back, which refers to the single <code>chatEnumerator</code> that was already created by that same Actor:</p> <pre><code>val (chatEnumerator, chatChannel) = Concurrent.broadcast[JsValue] </code></pre> <p>I assume this does not allow me to send a message to just a single client? Should I remove the broadcast functionality and create and keep track of enumerators for each client, and then iterate myself? Or can I somehow get a reference to a client-specific enumerator in the <code>foreach</code>?</p> <p>(I understand that built-in flexibility <a href="https://stackoverflow.com/questions/15469659/private-message-using-websockets/15474698#15474698">depends on the implementation</a>, but this use case seems quite common to me. Like when using WebSockets with <a href="http://socket.io/" rel="nofollow noreferrer">Socket.IO</a>, I can easily send messages <a href="https://stackoverflow.com/questions/10058226/send-response-to-all-clients-except-sender-socket-io/10099325#10099325">to either</a> all clients, all clients except the sender of the current request, or just a single client. That's what I'm trying to achieve in Play 2.1.x as well.)</p>
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    1. CO...[using Concurrent.patchPanel](http://lambdaz.blogspot.se/2012/12/play-21-multiplexing-enumerators-into.html) with both a private enumerator and the broadcast enumerator, and then unplugging the broadcast enumerator when needed, seems like a bad hack...? And might even drop messages if it's temporarily not plugged in while another message is handled?
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    2. COAh, [Atmosphere for Play!](https://github.com/Atmosphere/atmosphere-play) might be a better starting point?
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