If you pass in a config object to the NancyHost constructor you can hook uncaught errors - you will probably find that it's exploding due to a change that was made with client certificates which will be fixed in 0.18, but you can get the fix now if you grab it from the CI feed:
Why does my Self-Hosted NancyFX application hang when running over HTTPS?
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31-05-2022 - |
Question
I have written a Nancy self-hosted application. This is intended to run as an API without any client interface. It is therefore a console application that is deployed via TopShelf (see code below)
Everything works just fine as long as I run over standard http. However I need to secure this API by running it over https (see SSL Setup section below)
Once I have the service running over https the service hangs after the first call. To be clear, the first call works fine and I receive the correct response. Howvere something must have gone wrong because the second call hangs and only returns after it times-out.
Is this a bug in the Nancy self hosting or have I made a mistake in my code / setup?
Thanks.
The Console Application
public class Program
{
[STAThread]
public static void Main()
{
HostFactory.Run(config => {
config.Service<SelfHost>(service =>
{
service.ConstructUsing(name => new SelfHost());
service.WhenStarted(s=> s.Start());
service.WhenStopped(s=> s.Stop());
});
config.RunAsLocalSystem();
config.StartAutomatically();
});
}
}
The Self Hosting Controller
public class SelfHost
{
private NancyHost nancyHost;
public void Start()
{
var config = new HostConfiguration {
UnhandledExceptionCallback = e => Log.Error("Self Host Exception", e)
};
nancyHost = new NancyHost(config, new Uri("https://myurl.com:8081"));
nancyHost.Start();
}
public void Stop()
{
nancyHost.Stop();
}
}
The Nancy Module
public class RootModule : NancyModule
{
public RootModule()
{
Get["/"] = _ =>
{
return "Service is Running";
};
}
}
SSL Setup
netsh http add sslcert ipport=0.0.0.0:8081 certhash=XXXX880f5e33288a4c88bb1d321d88d44d2XXXX appid={xxxxxxxx-e7e9-xxxx-94dd-5634a472f42d}
netsh http add urlacl url=https://myurl.com:8081/ user=MYDOMAIN\my-admin-user
Edit 1
Following the advice of @Steven Robbins I have now recompiled using the pre-release nuget packages. Unfortunately the latest pre-release packages have not solved the problem, however I do now have some very intersting log information.
Logs
//First Call - success
12:51:10|GET| /
12:51:10|OK | Service is Running
//Second Call failure
12:51:12|Self Host Exception
12:51:12| Method :AsyncProcessClientCertificate
12:51:12| Message :Element not found
//Restart Service
12:51:41|Stopping Service
12:51:41|Self Host Exception
12:51:41| Method :EndGetContext
12:51:41| Message :The I/O operation has been aborted because of either a thread exit or an application request
12:51:41|Self Host Exception
12:51:41| Method :EndGetContext
12:51:41| Message :The I/O operation has been aborted because of either a thread exit or an application request
12:51:43|Starting on https://myurl.net:8081
La solution