Error using ClientWebSocket: The 'Connection' header value 'Upgrade,Keep-Alive' is invalid. .NET Framework 4.7.2
Hi, Im using .NET Framework 4.7.2 trying to connect to a WebSocket as a client, however I keep getting the same error over and over:
System.Net.WebSockets.WebSocketException (0x80004005): The 'Connection' header value 'Upgrade,Keep-Alive' is invalid.
at System.Net.WebSockets.ClientWebSocket.ValidateResponse(HttpWebRequest request, HttpWebResponse response)
at System.Net.WebSockets.ClientWebSocket.<ConnectAsyncCore>d__21.MoveNext()"
This is my code:
using (ClientWebSocket webSocket = new ClientWebSocket())
{
try
{
webSocket.ConnectAsync(serverUri, CancellationToken.None).Wait();
Console.WriteLine("Connected!");
webSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closing", CancellationToken.None).Wait();
Console.WriteLine("Closed!");
}
catch (Exception e)
{
Console.WriteLine($"Exception: {e.Message}");
}
}
It seems that the class is putting Keep.Alive in the connection header and that is invalid. I tried modifying the header but it doesnt let me. Im able to connect with Postman and other libraries so the problem is not the server.