private async Task ConnectionWatchDog(TcpClient tcp)
{
while (!_connectionCancellation.IsCancellationRequested)
{
try
{
using (tcp)
using (var nstream = tcp.GetStream())
using (var writer = new SocketWriter(nstream, _options.WriteBufferSize))
using (var reader = new SocketReader(nstream, _options.ReadBufferSize))
{
RunInitializers(reader, writer);
var tasks = new[]
{
Task.Run(() => ReadAsync(reader)),
Task.Run(() => WriteAsync(writer)),
_options.PingTimeout != Timeout.InfiniteTimeSpan ? Task.Run(() => TimeoutWatchdogAsync()) : new Task(() => {})
};
if (_interval != Timeout.InfiniteTimeSpan)
{
_pingTimer.Change(_interval, _interval); // start timer
}
_loadFactor = 1;
OnConnection();
await Task.WhenAny(tasks).ConfigureAwait(false);
ThrowSocketExceptionIfExists(tasks);
}
}
catch (SocketException soex)
{
// rotate endpoint
_currentEndpoint = (_currentEndpoint + 1) % _endpoints.Length;
_logger.Error(soex, "Connection {0} error. Switching endpoing.", _code);
}
catch (Exception ex)
{
_logger.Error(ex, "Connection {0} error.", _code);
}
_logger.Info("Connection {0} disconnected.", _code);
_loadFactor = 100;
_pending.CancelTokens();
OnDisconnection();
if (_connectionCancellation.IsCancellationRequested)
{
continue;
}
tcp = new TcpClient();
await ConnectWithTimeOut(tcp, _endpoints[_currentEndpoint]).ConfigureAwait(false);
}
}
