h2o.conf.yml

access-log: /dev/null
hosts:
  "localhost":
    listen: 8384
    paths:
      "/t":
        mruby.handler: |
          class Foo
            def initialize(ch, a)
              @ch = ch
              task do
                @ch.push a
              end
            end
          end
          Proc.new do |env|
            begin
              ch = H2O::Channel.new
              f1 = Foo.new(ch, "a")
              f2 = Foo.new(ch, "b")
              str = ''
              2.times{ str << ch.shift }
              [200, {}, [str]]
            rescue => e
              puts "Unexpected error #{e.class}:#{e.message}"
              e.backtrace.each do |bt|
                puts "\t#{bt}"
              end
              [500, {}, [e.message]]
            end
          end