Class: Async::HTTP::Protocol::HTTP2::Input

Inherits:
Body::Writable show all
Defined in:
lib/async/http/protocol/http2/input.rb

Overview

A writable body which requests window updates when data is read from it.

Instance Method Summary collapse

Methods inherited from Body::Writable

#close, #closed?, #empty?, #inspect, #length, #write

Constructor Details

#initialize(stream, length) ⇒ Input

Returns a new instance of Input.



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# File 'lib/async/http/protocol/http2/input.rb', line 31

def initialize(stream, length)
  super(length)
  
  @stream = stream
  @remaining = length
end

Instance Method Details

#read ⇒ Object 



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# File 'lib/async/http/protocol/http2/input.rb', line 38

def read
  if chunk = super
    # If we read a chunk fron the stream, we want to extend the window if required so more data will be provided.
    @stream.request_window_update
  end
  
  # We track the expected length and check we got what we were expecting.
  if @remaining
    if chunk
      @remaining -= chunk.bytesize
    elsif @remaining > 0
      raise EOFError, "Expected #{self.length} bytes, #{@remaining} bytes short!"
    elsif @remaining < 0
      raise EOFError, "Expected #{self.length} bytes, #{@remaining} bytes over!"
    end
  end
  
  return chunk
end