HoloLens(クライアント側)でwebsocket通信を利用しようとしています。  
他クライアントからサーバーへの接続を確認できたためHoloLens実機で接続テストしようとしたのですが、以下の部分の処理途中でアプリケーションが止まってしまっています。

```

        private void OnConnect() {
            AppendOutputLine("OnConnect");  
            messageWebSocket = new MessageWebSocket();
            messageWebSocket.Control.MessageType = SocketMessageType.Utf8;
            messageWebSocket.MessageReceived += WebSock_MessageReceived;
            messageWebSocket.Closed += WebSock_Closed;
            Uri serverUri = new Uri("ws://192.168.11.2:1880");
    
            try {
                Task.Run(async () => {
                    //Connect to the server.
                    AppendOutputLine("Connect to the server..." + serverUri.ToString());
    
                    await Task.Run(async () => {
                        AppendOutputLine("Task Run :" + serverUri.ToString());
                        await messageWebSocket.ConnectAsync(serverUri);
                        AppendOutputLine("ConnectAsync OK");
    
                        await WebSock_SendMessage(messageWebSocket, "Connect Start");
                    });
    
                    //AppendOutputLine("miss await Task");
    
                });
    
    
            }
            catch (Exception ex) {
                AppendOutputLine("error : " + ex.ToString());
    
                //Add code here to handle any exceptions
            }
    
```

具体的には、"Connect to the server...
ws://192.168.11.2:1880"が表示された段階でアプリケーションが止まり、その後の `await Task.Run(async () =>
{});` が実行できていません。  
Unityの  
Scripting Runtime Version を Experimental(.NET 4.6 Equivalent)に、  
Api Compatibility Level を .NET 4.6 に  
変更したのですが、状況は変わりませんでした。

もし分かる方がいらっしゃいましたら、解決方法を教えて頂きたいです。

環境  
Unity2017.4.17f1  
VisualStudio2017  
Hololens OSbuild:10.0.17763.316

ソースコードは[この記事](https://www.1ft-
seabass.jp/memo/2017/04/06/hololens_websocket_node-
red_firstcontact/)を参考にしています。

以下、ソースコード全文

```

    using UnityEngine;
    using System.Collections;
    using UnityEngine.Networking;
    using System;
    using System.Net;
    using System.Net.Sockets;
    using System.Threading;
    using System.Collections.Generic;
    using UnityEngine.UI;
    
    #if UNITY_EDITOR
    using WebSocketSharp; // Unity
    using WebSocketSharp.Net;
    #else
    using System.Threading.Tasks;
    using Windows.Networking.Sockets;
    using Windows.Storage.Streams;
    #endif
    
    
    
    public class WebSocketController : MonoBehaviour {
    
    #if UNITY_EDITOR
        WebSocket ws;
    #else
        private MessageWebSocket messageWebSocket;
        private DataWriter messageWriter;
        private bool busy;
    #endif
    
        private Text targetText;
    
        // Use this for initialization
        void Start () {
    
            this.targetText = this.GetComponent<Text>();
    
            this.targetText.text = "Start";
    
    #if UNITY_EDITOR
            this.targetText.text = "Unity_Editor";
            ws = new WebSocket("ws://192.168.11.2:1880");
            var context = SynchronizationContext.Current;
    
            ws.OnOpen += (sender, e) =>
            {
                Debug.Log("WebSocket Open");
            };
    
            ws.OnMessage += (sender, e) =>
            {
                Debug.Log("WebSocket Receive message: " + e.Data);
    
                // Main threadで実行
                context.Post(state => {
                    this.targetText.text = state.ToString();
                    }, e.Data);
    
    
    
            };
    
            ws.OnError += (sender, e) =>
            {
                Debug.Log("WebSocket Error Message: " + e.Message);
            };
    
            ws.OnClose += (sender, e) =>
            {
                Debug.Log("WebSocket Close");
            };
    
            ws.Connect();
    #else   
            // HoloLens実機でWebSocket接続開始
            this.targetText.text = "Unity_UWP";
            OnConnect();
    
    #endif
    
        }
    
    
    
        // Update is called once per frame
        void Update () {
    #if UNITY_EDITOR
            //if (Input.GetKeyUp("s")) {
            //    ws.Send("Test Message");
            //}
    #else   
    
    #endif  
        }
    
    
    #if UNITY_EDITOR
        void OnDestroy() {
            ws.Close();
            ws = null;
        }
    
    #else
        private void OnConnect() {
    
            AppendOutputLine("OnConnect");
    
            messageWebSocket = new MessageWebSocket();
    
            //In this case we will be sending/receiving a string so we need to set the MessageType to Utf8.
            messageWebSocket.Control.MessageType = SocketMessageType.Utf8;
    
            //Add the MessageReceived event handler.
            messageWebSocket.MessageReceived += WebSock_MessageReceived;
    
            //Add the Closed event handler.
            messageWebSocket.Closed += WebSock_Closed;
    
            // Uri serverUri = new Uri("ws://192.168.11.2:1880/testws"); // 別PCのNode-REDのWebSocketにつながる
            Uri serverUri = new Uri("ws://192.168.11.2:1880");
    
    
            try {
                Task.Run(async () => {
                    //Connect to the server.
                    AppendOutputLine("Connect to the server..." + serverUri.ToString());
    
                    await Task.Run(async () => {
                        AppendOutputLine("Task Run :" + serverUri.ToString());
                        await messageWebSocket.ConnectAsync(serverUri);
                        AppendOutputLine("ConnectAsync OK");
    
                        await WebSock_SendMessage(messageWebSocket, "Connect Start");
                    });
    
                    //AppendOutputLine("miss await Task");
    
                });
    
    
            }
            catch (Exception ex) {
                AppendOutputLine("error : " + ex.ToString());
    
                //Add code here to handle any exceptions
            }
    
    
        }
    
        private async Task WebSock_SendMessage(MessageWebSocket webSock, string message) {
            AppendOutputLine("WebSock_SendMessage : " + message);
    
            DataWriter messageWriter = new DataWriter(webSock.OutputStream);
            messageWriter.WriteString(message);
            await messageWriter.StoreAsync();
        }
    
        private void WebSock_MessageReceived(MessageWebSocket sender, MessageWebSocketMessageReceivedEventArgs args) {
            DataReader messageReader = args.GetDataReader();
            messageReader.UnicodeEncoding = UnicodeEncoding.Utf8;
            string messageString = messageReader.ReadString(messageReader.UnconsumedBufferLength);
            AppendOutputLine("messageString : " + messageString);
    
            //Add code here to do something with the string that is received.
    
            Task.Run(async () => {
    
                UnityEngine.WSA.Application.InvokeOnAppThread(() => {
    
                    AppendOutputLine("InvokeOnAppThread : iTween");
    
                    this.targetText.text = messageString;
    
                }, true);
    
                await Task.Delay(100);
            });
        }
    
        private void WebSock_Closed(IWebSocket sender, WebSocketClosedEventArgs args)
        {
            //Add code here to do something when the connection is closed locally or by the server
        }
    
        private void AppendOutputLine(string value)
        {
            // OutputField.Text += value + "\r\n";
            //Debug.Log(value);
            this.targetText.text = value;
        }
    
    #endif
    
    }
    
    
```
CC BY-SA 4.0
2019-05-03T16:16:09.907
54695
2019-05-03T16:21:24.037
2019-05-03T16:21:24.037
34174
34174
question
unity3d websocket 非同期
Unity2017で非同期処理が使えない