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executable file 45 lines (39 sloc) 1.056 kb
#!/usr/bin/env ruby
#
# A simple example showing how to use Einhorn's shared-socket
# features. Einhorn translates the (addr:port[,flags...]) bind spec in
# into a file descriptor number in the EINHORN_FDS environment variable.
#
# Invoke through Einhorn as
#
# einhorn -b 127.0.0.1:2345,r ./time_server
#
# or, if you want to try out preloading:
#
# einhorn -b 127.0.0.1:2345,r -p ./time_server ./time_server
require 'rubygems'
require 'einhorn/worker'
def einhorn_main
puts "Called with ENV['EINHORN_FDS']: #{ENV['EINHORN_FDS']}"
fd_num = Einhorn::Worker.socket!
socket = Socket.for_fd(fd_num)
# Came up successfully, so let's set up graceful handler and ACK the
# master.
Einhorn::Worker.graceful_shutdown do
puts "Goodbye from #{$$}"
exit(0)
end
Einhorn::Worker.ack!
# Real work happens here.
begin
while true
accepted, _ = socket.accept
accepted.write("[#{$$}] The current time is: #{Time.now}!\n")
accepted.close
end
rescue Exception
end
end
if $0 == __FILE__
einhorn_main
end
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