void observe_Responded(Object sender, ResponseEventArgs e)
{
if (coapWebSocektService.SessionList.Contains(observedSession))
coapWebSocektService.SendToObserved(e.Response.PayloadString, observedSession);
//when the client is closed,cancel the observe
else
{
PerformCoAP(Request.Method.GET, _observingRequest.URI, false, false);
Console.WriteLine("Websocket链接关闭");
this.clientSocket.Disconnect(false);
this.clientSocket.Dispose();
}
}