actionpack/lib/action_dispatch/middleware/rewindable_input.rb


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

module ActionDispatch
  class RewindableInput
    def initialize(app)
      @app = app
    end

    def call(env)
      begin
        env['rack.input'].rewind
      rescue NoMethodError, Errno::ESPIPE
        # Handles exceptions raised by input streams that cannot be rewound
        # such as when using plain CGI under Apache
        env['rack.input'] = StringIO.new(env['rack.input'].read)
      end

      @app.call(env)
    end
  end
end