Module: HTTP2

Defined in:
lib/http/2/header/huffman_statemachine.rb,
lib/http/2.rb,
lib/http/2/error.rb,
lib/http/2/base64.rb,
lib/http/2/client.rb,
lib/http/2/framer.rb,
lib/http/2/header.rb,
lib/http/2/server.rb,
lib/http/2/stream.rb,
lib/http/2/emitter.rb,
lib/http/2/version.rb,
lib/http/2/settings.rb,
lib/http/2/connection.rb,
lib/http/2/extensions.rb,
lib/http/2/flow_buffer.rb,
lib/http/2/header/huffman.rb,
lib/http/2/header/compressor.rb,
lib/http/2/header/decompressor.rb,
lib/http/2/header/encoding_context.rb

Overview

The following task generates this file.

rake generate_huffman_table

Defined Under Namespace

Modules: Base64, BufferUtils, Emitter, Error, FlowBuffer, Header, PackingExtensions Classes: Client, Connection, FrameBuffer, Framer, Server, Settings, Stream

Constant Summary collapse

EMPTY = 
[].freeze
END_STREAM =

Frame flags as defined by the spec (max 255 bits) DATA: ( X X COMPRESSED X PADDED X X END_STREAM ) HEADERS: ( X X PRIORITY X PADDED END_HEADERS X END_STREAM ) PRIORITY: ( X X X X X X X X ) RST_STREAM: ( X X X X X X X X ) SETTINGS: ( X X X X X X X ACK ) PUSH_PROMISE: ( X X X X PADDED END_HEADERS X X ) PING: ( X X X X X X X ACK ) GOAWAY: ( X X X X X X X X ) WINDOW_UPDATE: ( X X X X X X X X ) CONTINUATION: ( X X X X X END_HEADERS X X ) ALTSVC: ( X X X X X X X X ) ORIGIN: ( RESERVED4 X X RESERVED3 X RESERVED2 RESERVED X )

ACK = 0b0001
RESERVED =

1

0b0010
END_HEADERS =

2

0b0100
PADDED =

4

0b1000
PRIORITY =

8

0b0010_0000
VERSION = 
"1.2.0"
SPEC_DEFAULT_CONNECTION_SETTINGS =

Default values for SETTINGS frame, as defined by the spec.

{
  settings_header_table_size: 4096,
  settings_enable_push: 1, # enabled for servers
  settings_max_concurrent_streams: Framer::MAX_STREAM_ID, # unlimited
  settings_initial_window_size: 65_535,
  settings_max_frame_size: 16_384,
  settings_max_header_list_size: (2 << 30) - 1 # unlimited
}.freeze
DEFAULT_FLOW_WINDOW =

Default connection and stream flow control window (64KB).

65_535
DEFAULT_HEADER_SIZE =

Default header table size

4096
DEFAULT_MAX_CONCURRENT_STREAMS =

Default stream_limit

100
DEFAULT_CONNECTION_SETTINGS = 
{
  settings_header_table_size: 4096,
  settings_enable_push: 1, # enabled for servers
  settings_max_concurrent_streams: 100,
  settings_initial_window_size: 65_535,
  settings_max_frame_size: 16_384,
  settings_max_header_list_size: (2 << 30) - 1 # unlimited
}.freeze
DEFAULT_WEIGHT =

Default stream priority (lower values are higher priority).

16
CONNECTION_PREFACE_MAGIC =

Default connection “fast-fail” preamble string as defined by the spec.

"PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
REQUEST_MANDATORY_HEADERS = 
%w[:scheme :method :authority :path].freeze
RESPONSE_MANDATORY_HEADERS = 
%w[:status].freeze
CONNECTION_FRAME_TYPES = 
%i[settings ping goaway].freeze
STREAM_OPEN_STATES = 
%i[open half_closed_local].freeze

Instance Method Summary collapse

Instance Method Details

#urlsafe_decode64(str) ⇒ Object 



35
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# File 'lib/http/2/base64.rb', line 35

def urlsafe_decode64(str)
  if !str.end_with?("=") && str.length % 4 != 0
    str = str.ljust((str.length + 3) & ~3, "=")
    str.tr!("-_", "+/")
  else
    str = str.tr("-_", "+/")
  end
  strict_decode64(str)
end