`class HeadersFrame`

The HEADERS frame is used to open a stream, and additionally carries a header block fragment. HEADERS frames can be sent on a stream in the "idle", "reserved (local)", "open", or "half-closed (remote)" state.

+---------------+ |Pad Length? (8)| +-+-------------+-----------------------------------------------+ |E| Stream Dependency? (31) | +-+-------------+-----------------------------------------------+ | Weight? (8) | +-+-------------+-----------------------------------------------+ | Header Block Fragment () ... +---------------------------------------------------------------+ | Padding () ... +---------------------------------------------------------------+

Definitions

`def priority?`

Check if this frame contains priority information.

Signature

returns　Boolean: True if the PRIORITY flag is set.

Implementation

def priority?
	flag_set?(PRIORITY)
end

`def end_stream?`

Check if this frame ends the stream.

Signature

returns　Boolean: True if the END_STREAM flag is set.

Implementation

def end_stream?
	flag_set?(END_STREAM)
end

`def unpack`

Unpack the header block fragment from the frame.

Signature

returns　String: The unpacked header block data.

Implementation

def unpack
	data = super
	
	if priority?
		# We no longer support priority frames, so strip the data:
		data = data.byteslice(5, data.bytesize - 5)
	end
	
	return data
end

`def pack(data, *arguments, **options)`

Pack header block data into the frame.

Signature

parameter　data　String: The header block data to pack.
parameter　arguments　Array: Additional arguments.
parameter　options　Hash: Options for packing.

Implementation

def pack(data, *arguments, **options)
	buffer = String.new.b
	
	buffer << data
	
	super(buffer, *arguments, **options)
end

`def apply(connection)`

Apply this HEADERS frame to a connection for processing.

Signature

parameter　connection　Connection: The connection to apply the frame to.

Implementation

def apply(connection)
	connection.receive_headers(self)
end

`def inspect`

Get a string representation of the headers frame.

Signature

returns　String: Human-readable frame information.

Implementation

def inspect
	"\#<#{self.class} stream_id=#{@stream_id} flags=#{@flags} #{@length || 0}b>"
end