Play Framework Websocket服務器不處理來自netty客戶端的Ping幀

Question

處理Websockets時，我拿着netty's client和一個使用Scala（2.10.2）使用Play Framework（2.2.1）構建的服務器（代碼粘貼在下面）。 服務器對客戶端的Ping消息沒有反應。既不接收任何傳入Ping消息的Iteratee通知，也不會響應Ping消息。

但是，我的應用程序處理傳入的二進制幀。這看起來很奇怪，因爲in Netty's code，二進制幀與Ping幀非常相似。我知道的唯一區別是OpCode，即Ping爲0x9，Binay爲0x2。

任何人都可以解釋這種行爲，並給我一個提示如何處理在Play框架中的Websocket Ping/Pong框架？

def connect = WebSocket.using[Array[Byte]] { request => 
    // connection attempts are also indicated if client sends 'PingWebSocketFrame' 
    Logger.info("Someone just connected!?") 

    val (out, channel) = Concurrent.broadcast[Array[Byte]] 

    // Messages of netty's type 'PingWebSocketFrame' never enter here 
    val in = Iteratee.foreach[Array[Byte]] { msg => 
     // the following line is printed if netty's 'BinaryWebSocketFrame' was sent BUT 
     //       never if netty's 'PingWebSocketFrame' was sent, why? 
     println("Some Binary data arrived, being of length " + msg.length + " [bytes]") 
    } 
(in, out) 
} 

Answer 1

Playframework不支持pingframe。它簡單地忽略它。現在，固定在主

https://github.com/playframework/playframework/pull/2130