AbpSession 在開始使用 Websocket 時總是返回 null

Question

I'm using asp.net boilerplate framework, and I'm trying to set the WebSocket connection to become match the logged-in user id when the user establishes the WebSocket connection, but what I noticed is the AbpSession.UserId value is always null, so這是什么原因，雖然在其他類中它工作正常，這是我的代碼：

 public class WebSocketServerConnectionManager : ITransientDependency
    {

        private ConcurrentDictionary<string, WebSocket> _socket = new ConcurrentDictionary<string, WebSocket>();

        public IAbpSession AbpSession { get; set; }

        public WebSocketServerConnectionManager()
        {
            AbpSession = NullAbpSession.Instance;

        }

        public ConcurrentDictionary<string, WebSocket> GetAllSockets()
        {
        return _socket;
        
        }

        public string AddSocket(WebSocket socket) 
        {

            try
            {
                var ConnId = AbpSession.UserId.ToString(); //<==== Null

                    // Guid.NewGuid().ToString();


                //var test = AbpSession.UserId;


                _socket.TryAdd(ConnId/*dictionary item key*/, socket/*dictionary item value*/);
                Debug.WriteLine("Connection Added:" + ConnId);
                return ConnId;
            }
            catch(Exception ex)
            {
                throw new Exception(ex.Message);
            }
            
        }
}

更新：

這是客戶端 WebSocket 初始化：

    async ngOnInit() {
this.connectWebSocket();

}

connectWebSocket(){
 
  this.socket=new WebSocket(this.webSocketUrl);

  this.socket.onopen=(event)=>{

  }

  this.socket.onclose=(event)=>{

  }


this.socket.onmessage=(event)=>{
this.isConnID(event.data);



  }

}

Answer 1

您需要傳遞身份驗證信息。

如果您使用的是 ASP.NET 樣板 Angular 模板（帶有模塊零），您可以在查詢字符串中傳遞enc_auth_token ，這將由QueryStringTokenResolver解析。

// import { AppConsts } from '@shared/AppConsts';
// import { UtilsService } from 'abp-ng2-module';

connectWebSocket(){
    // this.socket=new WebSocket(this.webSocketUrl); // Change this to the following
    const encryptedAuthToken = new UtilsService().getCookieValue(AppConsts.authorization.encryptedAuthTokenName);
    const webSocketUrl = this.webSocketUrl + '?enc_auth_token=' + encodeURIComponent(encryptedAuthToken);
    this.socket = new WebSocket(webSocketUrl);

    ...
}

參考： SignalRAspNetCoreHelper.ts