mrnr1
commented
5 years ago I would need to see your project to determine exactly why the exception is being thrown, however I presume it's because you're making an assumption on an operation that you're still connected to the host when your not. In my application, I have an EventHandler 'DisconnectedEvent' that I invoke when bIsConnected is true, but the receiveTimer - lastReceived (elapsed milliseconds since the last message from the server) is greater than my threshold for a disconnection event (10 seconds). This is controlled via a sequence of message objectts sent to and received from the host (ClientPingMsg/ServerPingMsg), so when I receive a message from the server I update my lastReceieved variable. Then, in my handler for the disconnection event, I attempt to reinitialize the connection.
For example, not in any kind of order:
private readonly Stopwatch _receiveTimer;
private long _lastReceived = -1;
public event EventHandler DisconnectEvent;
private const int
DisconnectionTimeout = 10 * 1000; // in seconds until we're considered disconnected due to timeout
// In your CTOR / after connection is established:
_receiveTimer = Stopwatch.StartNew();
private void OnDisconnectionEvent()
{
DisconnectEvent?.Invoke(this, new EventArgs());
}
// In your SendQueue Message processor (i.e Send())
if (_isConnected
&& _receiveTimer.ElapsedMilliseconds - _lastReceived > DisconnectionTimeout)
{
Disconnected(); // Set bIsConnected to false, clear send queue, re-initialize, re-subscribe, etc.
}
// Called when we have received a ping message from the host, update your last received variable.
private void UpdateLastReceived()
{
_lastReceived = _receiveTimer.ElapsedMilliseconds;
}
ciottied
stale[bot]
obiben
Environment
Expected behaviour
Crashing app is a client connected to a (stock market) Feedserver by the means of a dealer socket (for async subscribe/unsubscribe and other requests) and a sub socket (prices streams. If Server, for whatever reason, goes down and then up again app should reconnect and re-subscribe prices (through dealer socket).
Actual behaviour
App Crashes, even in VS debug mode, with this exception:
Unexpectedly, ex does not have a stack trace. Event logger logs this net framework error :
Steps to reproduce the behaviour
Can send code snippet