Websocket connection closing immediately after connection in c#

Question

I'm trying to implement Websockets in c# and i tried many ways but nothing works fine.

i) working fine with ClientwebSocket class but this class don't have events(i need events)

ii) tried with WebSocketSharp.WebSocket class but closing immediately after opening connection

iii) WebSocket4Net.WebSocket same problem closing connection immediately

can anyone please help me in solving this issue.A big thanks in advance.

class SocketConnection
{
    public static WebSocketSharp.WebSocket client;

    public void connectionEstablish()
    {
        //---------------------------WebSocketSharp ----------------------------

        using (client = new WebSocketSharp.WebSocket("ws://localhost:8182"))
        {
            client.OnClose += new EventHandler<CloseEventArgs>(onClosed);
            client.OnMessage += new EventHandler<MessageEventArgs>(onReceived);
            client.OnOpen += new EventHandler(OnConnectionOpen);

            client.Connect();

        }
      }
    public static void onClosed(object sender, EventArgs e)
    {
      Console.WriteLine("Inclose");
    }
    public static void onReceived(object sender, MessageEventArgs e)
    {
      Console.WriteLine("received");
    }
    public void OnConnectionOpen(object sender, EventArgs e)
    {
      Console.WriteLine("opened connection");
    }
}

sujith karivelil · Accepted Answer · 2019-05-13 08:54:54Z

4

I hope that your issue is with the using in the code. The variable client is an using variable so It will get disposed when using block ends(That is what the purpose of using, calling dispose automatically).

That means after executing the client.Connect(); using block ends and hence the object get disposed. To verify this, try remove the using block and change the code like the following:

var client = new WebSocketSharp.WebSocket("ws://localhost:8182");

Don't forget to dispose the object after use.

answered May 13, 2019 at 8:54

sujith karivelil

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4 Comments

Sami Kuhmonen Over a year ago

And most likely make the variable into a class field so it stays alive and can be disposed at later time.

Saigeetha Reddy Mahakala Over a year ago

client = new WebSocketSharp.WebSocket("ws://localhost:8182"); client.OnClose += new EventHandler<CloseEventArgs>(onClosed); client.OnMessage += new EventHandler<MessageEventArgs>(onReceived); client.OnOpen += new EventHandler(OnConnectionOpen); client.Connect(); even this didnt worked,facing same issue

sujith karivelil Over a year ago

@SaigeethaReddyMahakala: enclose them inside a try..catch and get the exception details

Saigeetha Reddy Mahakala Over a year ago

@sujith karivelil: i tried it but its not throwing any exception directly jumping to onClose() but i captured the eventArgs in Onclose() its saying that "An exception occured while connnecting"

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