WebSocket on Play2.3

Application.scala

package controllers

import play.api.libs.iteratee._
import play.api.mvc._
import play.api.libs.concurrent.Execution.Implicits._

object Application extends Controller {

  def ws = WebSocket.using[String] { request =>
    val (out, channel) = Concurrent.broadcast[String]
    val in = Iteratee.foreach[String] {
      msg =>
        channel.push(msg);
    }
    (in, out)
  }

  def index = Action {
    Ok("websocket")
  }
  
}

routes

# Routes
# This file defines all application routes (Higher priority routes first)
# ~~~~

# Home page
GET        /                    controllers.Application.index
GET        /ws                  controllers.Application.ws