scala - 如何使用akka客户端websocket向websocket服务器发出多个请求

Question

我是 akka websockets 的新手，正在学习 akka 客户端 websockets https://doc.akka.io/docs/akka-http/current/client-side/websocket-support.html

我正在为我的 webrtc janus 服务器使用 websockets，因为我有 URL，我需要向它发送很多消息，每次都收到不同的响应，并根据该响应发送更多消息，我很困惑我们该怎么做通过查看示例代码，我认为每次需要向服务器发送消息时我都需要重复以下代码，但它似乎不正确，什么是正确的方法？

以我为例websocket 服务器正在运行ws://0.0.0.0:8188

首先我会向服务器发送消息以启动sessionID

request# 1

{
        "janus" : "create",
        "transaction" : "<random alphanumeric string>"
}

服务器将返回 session ID

response #1 
{
   "janus": "success",
   "session_id": 2630959283560140,
   "transaction": "asqeasd4as3d4asdasddas",
   "data": {
        "id": 4574061985075210
   }
}

然后根据 id 4574061985075210 我将发送另一条消息并接收更多信息

request # 02 {
 }

response # 02 {
}
----

我如何使用 akka 客户端 websockets 实现这一点

这是我的代码

import akka.http.scaladsl.model.ws._

import scala.concurrent.Future

object WebSocketClientFlow {
  def main(args: Array[String]) = {
    implicit val system = ActorSystem()
    implicit val materializer = ActorMaterializer()
    import system.dispatcher

    val incoming: Sink[Message, Future[Done]] =
      Sink.foreach[Message] {
        case message: TextMessage.Strict =>
          println(message.text)
//suppose here based on the server response i need to send another message to the server and so on do i need to repeat this same code here again ?????   

      }

    val outgoing = Source.single(TextMessage("hello world!"))

    val webSocketFlow = Http().webSocketClientFlow(WebSocketRequest("ws://echo.websocket.org"))

    val (upgradeResponse, closed) =
      outgoing
        .viaMat(webSocketFlow)(Keep.right) // keep the materialized Future[WebSocketUpgradeResponse]
        .toMat(incoming)(Keep.both) // also keep the Future[Done]
        .run()

    val connected = upgradeResponse.flatMap { upgrade =>
      if (upgrade.response.status == StatusCodes.SwitchingProtocols) {
        Future.successful(Done)
      } else {
        throw new RuntimeException(s"Connection failed: ${upgrade.response.status}")
      }
    }

    connected.onComplete(println)
    closed.foreach(_ => println("closed"))
  }
}

Answer 1

我建议您访问此网站并查看文档。 IT 拥有您需要的所有信息。

https://doc.akka.io/docs/akka/current/typed/actors.html