How to communicate web socket with https protocol in ASP.NET with C#?

See more:

C#

ASP.NET

SSL

WebSockets

I am having issue while trying to connect via web socket to a url with wss protocol. The hosted url with http works fine when i try to consume from client with ws protocol. But with https i get below exception. I created a self signed certificate in IIS and was able to start server. But while trying to connect I am getting below exception.


Exception is as below:

The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel. ---> System.Security.Authentication.AuthenticationException: The remote certificate is invalid according to the validation procedure.

What I have tried:

Core Code is as below:
Server

HttpListener httpListener = new HttpListener();
               httpListener.Prefixes.Add(httpListenerPrefix);
               httpListener.Start();

Client

public async Task Connect(string uri)
     {




         //NeSTCommonClass.WriteTextFile(LogPath + Logfilename, "Client:Handshake Connectivity  Process Sending  Starts", true);
         Thread.Sleep(1000); //wait for a sec, so server starts and ready to accept connection..

         // ClientWebSocket webSocket = null;
         try
         {
             webSocket = new ClientWebSocket();
             await webSocket.ConnectAsync(new Uri(uri), CancellationToken.None);
            //NeSTCommonClass.WriteTextFile(LogPath + Logfilename, "Client:Handshake Connectivity  Process Sending  Ends", true);
             //await Task.WhenAll(Receive(webSocket));



         }
         catch (Exception ex)
         {


             txtError.Text += "Client:HandShake Connectivity Process Failed: "+ ex.Message.ToString()+" "+ MethodInfo.GetCurrentMethod().Name  + Environment.NewLine;
             txtError.Text += "Client:HandShake Connectivity Process Failed: " + ex.InnerException.ToString() + " " + MethodInfo.GetCurrentMethod().Name + Environment.NewLine;
             txtError.Text += "Client:HandShake Connectivity Process Failed: " + ex.StackTrace.ToString() + " " + MethodInfo.GetCurrentMethod().Name + Environment.NewLine;
             //NeSTCommonClass.WriteTextFile(LogPath + Logfilename, "Client:HandShake Connectivity Process Failed: " + ex.Message.ToString() + "", true);


         }
         finally
         {
             if (webSocket != null)
                 webSocket.Dispose();
             //Console.WriteLine();
             //Console.WriteLine("WebSocket closed.");
         }
        // NeSTCommonClass.WriteTextFile(LogPath + Logfilename, "Client:Handshake Connectivity  Process Sending from Client Level Process Ends", true);
     }