internal override async Task StartPing()
{
_lastActivity = DateTime.Now.Add(_pingTimeout);
var pingInterval = TimeSpan.FromMilliseconds(Math.Max(500, _pingTimeout.TotalMilliseconds / 3));
var skipInterval = TimeSpan.FromMilliseconds(Math.Max(250, _pingTimeout.TotalMilliseconds / 2));
while (_connection.IsConnected)
{
await Task.Delay(pingInterval).ConfigureAwait(false);
try
{
var now = DateTime.Now;
if (_lastActivity < now.Subtract(_pingTimeout))
{
_connection.Close(WebSocketCloseReasons.GoingAway);
}
else if (_lastActivity < now.Subtract(skipInterval))
{
await _connection.WriteInternalAsync(_pingBuffer, 0, true, false, WebSocketFrameOption.Ping, WebSocketExtensionFlags.None, CancellationToken.None).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Debug.Fail("BandwidthSavingPing.StartPing " + ex.Message);
_connection.Close(WebSocketCloseReasons.ProtocolError);
}
}
}
internal override async Task StartPing()
{
_lastPong = _lastActivity = DateTime.Now.Add(_pingTimeout);
_pingInterval = TimeSpan.FromMilliseconds(Math.Max(500, _pingTimeout.TotalMilliseconds / 2));
while (_connection.IsConnected)
{
await Task.Delay(_pingInterval).ConfigureAwait(false);
try
{
var now = DateTime.Now;
if (_lastActivity.Add(_pingTimeout) < now)
{
_connection.Close(WebSocketCloseReasons.GoingAway);
}
else
{
((UInt64)now.Ticks).ToBytes(_pingBuffer.Array, _pingBuffer.Offset);
await _connection.WriteInternalAsync(_pingBuffer, 8, true, false, WebSocketFrameOption.Ping, WebSocketExtensionFlags.None, CancellationToken.None).ConfigureAwait(false);
}
}
catch (Exception ex)
{
Debug.Fail("LatencyControlPing.StartPing " + ex.Message);
_connection.Close(WebSocketCloseReasons.ProtocolError);
}
}
}
internal override async Task StartPing()
{
_lastPong = DateTime.Now.Add(_pingTimeout);
_pingInterval = TimeSpan.FromMilliseconds(Math.Max(500, _pingTimeout.TotalMilliseconds / 2));
while (_connection.IsConnected)
{
await Task.Delay(_pingInterval).ConfigureAwait(false);
try
{
var now = DateTime.Now;
if (_lastPong.Add(_pingTimeout) < now)
{
_connection.Close(WebSocketCloseReasons.GoingAway);
}
else
{
((UInt64)now.Ticks).ToBytes(_pingBuffer.Array, _pingBuffer.Offset);
_connection.WriteInternal(_pingBuffer, 8, true, false, WebSocketFrameOption.Ping, WebSocketExtensionFlags.None);
}
}
catch
{
_connection.Close(WebSocketCloseReasons.ProtocolError);
}
}
}
public override void Close()
{
_connection.Close();
}