Class: Biryani::Frame::WindowUpdate

Inherits:
Object
  • Object
show all
Defined in:
lib/biryani/frame/window_update.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(stream_id, window_size_increment) ⇒ WindowUpdate

Returns a new instance of WindowUpdate.

Parameters:

  • stream_id (Integer)
  • window_size_increment (Integer) 


8
9
10
11
12
 
# File 'lib/biryani/frame/window_update.rb', line 8

def initialize(stream_id, window_size_increment)
  @f_type = FrameType::WINDOW_UPDATE
  @stream_id = stream_id
  @window_size_increment = window_size_increment
end

Instance Attribute Details

#f_type ⇒ Object (readonly)

Returns the value of attribute f_type.



4
5
6
 
# File 'lib/biryani/frame/window_update.rb', line 4

def f_type
  @f_type
end

#stream_id ⇒ Object (readonly)

Returns the value of attribute stream_id.



4
5
6
 
# File 'lib/biryani/frame/window_update.rb', line 4

def stream_id
  @stream_id
end

#window_size_increment ⇒ Object (readonly)

Returns the value of attribute window_size_increment.



4
5
6
 
# File 'lib/biryani/frame/window_update.rb', line 4

def window_size_increment
  @window_size_increment
end

Class Method Details

.read(s, _flags, stream_id) ⇒ WindowUpdate

Parameters:

  • s (String)
  • _flags (Integer)
  • stream_id (Integer)

Returns:



32
33
34
35
36
37
38
39
40
 
# File 'lib/biryani/frame/window_update.rb', line 32

def self.read(s, _flags, stream_id)
  return ConnectionError.new(ErrorCode::FRAME_SIZE_ERROR, 'WINDOW_UPDATE payload length MUST be 4') if s.bytesize != 4

  window_size_increment = s.unpack1('N')
  return ConnectionError.new(ErrorCode::PROTOCOL_ERROR, 'WINDOW_UPDATE invalid window size increment 0') if window_size_increment.zero?
  return ConnectionError.new(ErrorCode::FLOW_CONTROL_ERROR, 'WINDOW_UPDATE invalid window size increment greater than 2^31-1') if window_size_increment > 2**31 - 1

  WindowUpdate.new(stream_id, window_size_increment)
end

Instance Method Details

#length ⇒ Integer

Returns:

  • (Integer) 


15
16
17
 
# File 'lib/biryani/frame/window_update.rb', line 15

def length
  4
end

#to_binary_s ⇒ String

Returns:

  • (String) 


20
21
22
23
24
25
 
# File 'lib/biryani/frame/window_update.rb', line 20

def to_binary_s
  payload_length = length
  flags = 0x00

  Frame.to_binary_s_header(payload_length, @f_type, flags, @stream_id) + [@window_size_increment].pack('N')
end