public async Task <string> Receive(CancellationToken cancellationToken)
{
try
{
return(await m_Underlying.Receive(cancellationToken));
}
catch (WebSocketException wse)
{
Trace.TraceError(wse.ToString());
}
for (int i = 0; i < 5; i++)
{
TryDisposeOld();
await Task.Delay(TimeSpan.FromSeconds(5), cancellationToken);
Trace.WriteLine("Caught websocket exception .. reconnecting");
try
{
m_Underlying = await m_Factory();
}
catch (Exception e)
{
Trace.TraceError("Failed to reconnect .. " + e);
}
}
if (m_Underlying == null)
{
throw new Exception("Failed to reconnect to Slack after several tries");
}
return(await m_Underlying.Receive(cancellationToken));
}
private void TryDisposeOld()
{
try
{
m_Underlying.Dispose();
m_Underlying = null;
}
catch (Exception e)
{
Trace.TraceError(e.ToString());
}
}
private static void MainLoop(ISlackRealTimeMessaging slackRtm, SlackMessageHandler handler, SlackApi slackApi, CancellationToken cancellationToken)
{
while (!cancellationToken.IsCancellationRequested)
{
var nextMessage = slackRtm.Receive(cancellationToken);
while (!nextMessage.Wait(TimeSpan.FromSeconds(10)))
{
var tickResult = handler.HandleTimerTick();
Console.Write(".");
DoResponse(slackApi, tickResult, cancellationToken);
}
var messageResult = handler.Handle(nextMessage.Result);
DoResponse(slackApi, messageResult, cancellationToken);
}
}
private ReconnectingSlackRealTimeMessaging(ISlackRealTimeMessaging underlying, Func <Task <ISlackRealTimeMessaging> > factory)
{
m_Underlying = underlying;
m_Factory = factory;
}
