Stopping servers

ruby-talk
1

When I run servers like WEBrick or an instance of TCPServer, it's
unclear to me how to stop them, especially under Windows. Ctrl-C seems
to kill the server, but not the Ruby application in which it is
running. How can I detect that Ctrl-C has been pressed? Ctrl-Break
sends an INT signal that I can catch with trap('INT'). I'm not sure
what triggers trap('TERM'), but it's not Ctrl-C.

···

--
R. Mark Volkmann
Partner, Object Computing, Inc.

2

Mark Volkmann wrote:

When I run servers like WEBrick or an instance of TCPServer, it's
unclear to me how to stop them, especially under Windows. Ctrl-C seems
to kill the server, but not the Ruby application in which it is
running. How can I detect that Ctrl-C has been pressed? Ctrl-Break
sends an INT signal that I can catch with trap('INT'). I'm not sure
what triggers trap('TERM'), but it's not Ctrl-C.

My WEBrick code tends to have this line:

RUBY_PLATFORM =~ /mingw|mswin32/ ? signal = 1 : signal = "HUP"

and then, later on

# s is the server instance
  trap( signal ){ s.shutdown }

I also often map a 'quit' URL so I can stop the server through a browser or wget:

s.mount_proc('/quit') { |req, resp| s.shutdown; exit; }

···

--
James Britt

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