private static void LogErrorAndRestart(Task task, string hostname)
{
if (task.Exception == null)
{
Trace.WriteLine("Certificate renewal scheduler unexpectedly exited without an exception");
}
else
{
Trace.WriteLine("Certificate renewal scheduler failure" + Environment.NewLine + task.Exception);
}
CertificateRenewalScheduler.RetryDelay()
.ContinueWith(_ => CertificateRenewalScheduler.StartAsync(hostname)
.ContinueWith(t => LogErrorAndRestart(t, hostname)));
}
public static IAppBuilder UseAcmeSsl(this IAppBuilder app, string hostname)
{
var acmeChallengePath = new PathString("/.well-known/acme-challenge");
var handler = new AcmeChallengeHandler();
app.MapWhen(c => c.Request.Path.StartsWithSegments(acmeChallengePath), a => a.Run(handler.Handle));
// maintain certificates in the background
#pragma warning disable 4014
Task.Delay(TimeSpan.FromSeconds(30))
.ContinueWith(_ => CertificateRenewalScheduler.StartAsync(hostname)
.ContinueWith(t => LogErrorAndRestart(t, hostname)));
#pragma warning restore 4014
return(app);
}
