src/ruby/end2end/channel_state_driver.rb

#!/usr/bin/env ruby

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# make sure that the client doesn't hang when process ended abruptly

require_relative './end2end_common'

def main
  STDERR.puts 'start server'
  server_runner = ServerRunner.new(EchoServerImpl)
  server_port = server_runner.run

  sleep 1

  STDERR.puts 'start client'
  _, client_pid = start_client('channel_state_client.rb', server_port)

  sleep 3

  Process.kill('SIGTERM', client_pid)

  begin
    Timeout.timeout(10) { Process.wait(client_pid) }
  rescue Timeout::Error
    STDERR.puts "timeout wait for client pid #{client_pid}"
    Process.kill('SIGKILL', client_pid)
    Process.wait(client_pid)
    STDERR.puts 'killed client child'
    raise 'Timed out waiting for client process. ' \
           'It likely hangs when ended abruptly'
  end

  # The interrupt in the child process should cause it to
  # exit a non-zero status, so don't check it here.
  # This test mainly tries to catch deadlock.
  server_runner.stop
end

main