Have consistent way to terminate server across platforms

[ahmetb]

I was trying to run ASP.NET web servers inside Docker containers using “k web” command, I realized that Microsoft.AspNet.Hosting waits for console input to terminate web server. (see this line https://github.com/aspnet/Hosting/blob/dev/src/Microsoft.AspNet.Hosting/Program.cs#L90 )

This is preventing the process inside Docker container to terminate when no stdin is attached. (workaround: if I run the container with -i, it works fine since it attaches a stdin).

I suggest removing this behavior, it doesn’t make sense to terminate upon stdin input, users always have Ctrl+C option to terminate and by convention, server applications are designed to be daemons and should not be interacting with STDIN.

[chriseldredge]

As a work-around, I created a shell script that behaves as a daemon and uses a fifo to cleanly shutdown the k process when it traps a SIGTERM and waits for k to exit.

https://gist.github.com/chriseldredge/37d41925fdddecea8517

Tested on OS X but haven't tried wiring it into Docker.

[ahmetb]

@chriseldredge awesome workaround!

[glennc]

This will involve having a consistent way to handle ctrl + c across platforms

[borgdylan]

It can be done using pure managed code if I am not wrong.

[Eilon]

Beta2

[directhex]

@chriseldredge your daemon works in Docker, though it requires the "ps" command be installed, which it may not be (e.g. it isn't in the Microsoft ASP.NET vNext Docker image - RUN apt-get install procps)

[davidfowl]

This is finally done e19289f. We now rely on ctrl + c across the board (SIGINT on mono and likely on coreclr xplat).