Running ApacheBench against empty RC1 template using kestrel results in timeout

[christiansparre]

Hi, I'm having trouble doing some simple benchmarks using ApacheBench on a project we are experimenting with.

I'm on Windows 7 with rc1-update1.

When trying to use ApacheBench the tool fails with the below message, I tried creating a new project using the empty RC1 template, this also failed.

ab -c 1 -n 100 http://localhost:5000/

Benchmarking localhost (be patient)...
Test aborted after 10 failures

apr_socket_connect(): No connection could be made because the target machine actively refused it.   (730061)

When using IISExpress from with VS it works fine. I have tried using different ports with kestrel with no luck. I have tried with the latest available RC2 builds with no luck. I tried the ab -k switch (KeepAlive) as I was told that might be the issue.

Any idea what might be causing this?

[khellang]

@christiansparre Are you sure the application successfully binds to port 5000? Have you tried running it as an administrator?

[christiansparre]

Yes. It's running as admin and I can get to it from a browser and PostMan etc. :)

[christiansparre]

This is how it looks :)

[khellang]

What if you use 127.0.0.1 instead of localhost? 😕 Could be worth looking at netstat -anb to see the interface it's bound to.

UPDATE: Might be an ab bug? http://stackoverflow.com/questions/7938869/ab-is-erroring-out-with-apr-socket-recv-connection-refused-61/8825278#8825278

[christiansparre]

After trying a bit more I have had success with this example: https://github.com/roydukkey/moist/tree/stackoverflow-34615917

It uses rc2-*

It is configured for http://localhost:1234 but that does not work. With http://127.0.0.1:1234 works as expected in ApacheBench, yay! :)

I still have not had success with RC1, have tried 127.0.0.1 also, netstat reports dnx.exe listening on the right port.

So something changed in the current RC2 builds, but I can still not make localhost work.

[christiansparre]

I'm going to dig a bit into this, from what I can see when it works I hit this method

KestrelHttpServer/src/Microsoft.AspNetCore.Server.Kestrel/Http/TcpListenerSecondary.cs

Line 20 in b062f85

protected override UvStreamHandle CreateAcceptSocket()

But not otherwise, have not looked at the kestrel code before so I'm a bit lost as to where it all starts. But I'll nose around a bit :)

[christiansparre]

Ok, I'm way in over my head not known a thing about how libuv works :). The only thing I have found out is that when using localhost nothing that I can track down in krestrel is called.

There seems to be some related issues around like: #601, #406 and #426

[Tratcher]

Localhost binds to [::1] right now, not 127.0.0.1.
#231

[christiansparre]

@Tratcher thank you, that explains it I think. At least for RC2, RC1 still does not work either way.

[amici]

What if you use 127.0.0.1 instead of localhost? 😕 Could be worth looking at netstat -anb to see the interface it's bound to.

After having the same problem (but on port localhost:80), trying with the 127.0.0.1 worked for me.

[benaadams]

Don't think ab resolves localhost correctly