Class: HTTP::Protocol::HTTP2::Window

Inherits:
Object
  • Object
show all
Defined in:
lib/http/protocol/http2/window_update_frame.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(capacity = 0xFFFF) ⇒ Window

Returns a new instance of Window.

Parameters:

  • capacity (Integer) (defaults to: 0xFFFF) —

    The initial window size, typically from the settings.



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# File 'lib/http/protocol/http2/window_update_frame.rb', line 26

def initialize(capacity = 0xFFFF)
	# This is the main field required:
	@available = capacity
	
	# These two fields are primarily used for efficiently sending window updates:
	@used = 0
	@capacity = capacity
	
	fail unless capacity
end

Instance Attribute Details

#available ⇒ Object (readonly)

Returns the value of attribute available.



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# File 'lib/http/protocol/http2/window_update_frame.rb', line 60

def available
  @available
end

#capacity ⇒ Object

Returns the value of attribute capacity.



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# File 'lib/http/protocol/http2/window_update_frame.rb', line 47

def capacity
  @capacity
end

#used ⇒ Object (readonly)

Returns the value of attribute used.



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# File 'lib/http/protocol/http2/window_update_frame.rb', line 46

def used
  @used
end

Instance Method Details

#available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/http/protocol/http2/window_update_frame.rb', line 62

def available?
	@available > 0
end

#consume(amount) ⇒ Object 



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# File 'lib/http/protocol/http2/window_update_frame.rb', line 55

def consume(amount)
	@available -= amount
	@used += amount
end

#dup ⇒ Object 



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# File 'lib/http/protocol/http2/window_update_frame.rb', line 37

def dup
	return self.class.new(@capacity)
end

#expand(amount) ⇒ Object 



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# File 'lib/http/protocol/http2/window_update_frame.rb', line 66

def expand(amount)
	@available += amount
	@used -= amount
end

#full? ⇒ Boolean

The window is completely full?

Returns:

  • (Boolean) 


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# File 'lib/http/protocol/http2/window_update_frame.rb', line 42

def full?
	@available.zero?
end

#limited? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/http/protocol/http2/window_update_frame.rb', line 71

def limited?
	@available < (@capacity / 2)
end

#to_s ⇒ Object 



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# File 'lib/http/protocol/http2/window_update_frame.rb', line 75

def to_s
	"\#<Window used=#{@used} available=#{@available} capacity=#{@capacity}>"
end