class Protocol::HTTP2::Stream

def send_headers(*arguments)

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. 
def send_headers(*arguments)
	if @state == :idle
		frame = write_headers(*arguments)
		
		if frame.end_stream?
			@state = :half_closed_local
		else
			open!
		end
	elsif @state == :reserved_local
		frame = write_headers(*arguments)
		
		@state = :half_closed_remote
	elsif @state == :open
		frame = write_headers(*arguments)
		
		if frame.end_stream?
			@state = :half_closed_local
		end
	elsif @state == :half_closed_remote
		frame = write_headers(*arguments)
		
		if frame.end_stream?
			close!
		end
	else
		raise ProtocolError, "Cannot send headers in state: #{@state}"
	end
end