private async Task ProcessSocketConnection(IDictionary <string, object> wsEnv)
{
var wsSendAsync = (WebSocketSendAsync)wsEnv["websocket.SendAsync"];
var wsCloseAsync = (WebSocketCloseAsync)wsEnv["websocket.CloseAsync"];
var wsCallCancelled = (CancellationToken)wsEnv["websocket.CallCancelled"];
var wsRecieveAsync = (WebSocketReceiveAsync)wsEnv["websocket.ReceiveAsync"];
//pass the sendasync tuple and the cancellation token to the handler. The handler uses the sendasync method to send message. Each connected client has access to this
var handler = new NoteSocketHandler(wsSendAsync, CancellationToken.None);
handler.OnOpen();
var buffer = new ArraySegment <byte>(new byte[100]);
try {
object status;
while (!wsEnv.TryGetValue("websocket.ClientCloseStatus", out status) || (int)status == 0)
{
WebSocketReceiveResult webSocketResultTuple = await wsRecieveAsync(buffer, CancellationToken.None);
int count = webSocketResultTuple.Item3;
handler.OnMessage(Encoding.UTF8.GetString(buffer.Array, 0, count));
}
} catch (Exception ex) {
Console.WriteLine(ex.Message);
throw ex;
}
handler.OnClose();
await wsCloseAsync((int)WebSocketCloseStatus.NormalClosure, "Closing", CancellationToken.None);
}
public HttpResponseMessage Get()
{
if (HttpContext.Current.IsWebSocketRequest)
{
var noteHandler = new NoteSocketHandler();
HttpContext.Current.AcceptWebSocketRequest(noteHandler);
}
return(new HttpResponseMessage(HttpStatusCode.SwitchingProtocols));
}
