private void KeepaliveTimer_Elapsed(object sender, ElapsedEventArgs e)
{
if (keepaliveTimestamp <= DateTime.UtcNow)
{
CoapToken token = CoapToken.Create();
ushort id = CoapSender.NewId(token.TokenBytes);
CoapRequest ping = new CoapRequest
{
MessageId = id,
Token = token.TokenBytes,
Code = CodeType.EmptyMessage,
MessageType = CoapMessageType.Confirmable
};
OnKeepAlive?.Invoke(this, new CoapMessageEventArgs(ping));
}
}
private void KeepaliveTimer_Elapsed(object sender, ElapsedEventArgs e)
{
//DateTime expiry = keepaliveExpiry.AddSeconds(Convert.ToDouble(_keepaliveSeconds * 1.5));
//communicates to server keep alive expired
//if (expiry < DateTime.Now)
//{
// OnKeepAliveExpiry?.Invoke(this, null);
//return;
//}
//signals client to send a ping to keep alive
if (keepaliveExpiry < DateTime.Now)
{
OnKeepAlive?.Invoke(this, new MqttMessageEventArgs(new PingRequestMessage()));
}
}