Protocol::HTTP2

Provides a low-level implementation of the HTTP/2 protocol.

Installation

Add this line to your application's Gemfile:

gem 'protocol-http2'

And then execute:

$ bundle

Or install it yourself as:

$ gem install protocol-http2

Usage

Here is a basic HTTP/2 client:

require 'async'
require 'async/io/stream'
require 'async/http/endpoint'
require 'protocol/http2/client'

Async do
	endpoint = Async::HTTP::Endpoint.parse("https://www.google.com/search?q=kittens")
	
	peer = endpoint.connect
	
	puts "Connected to #{peer.inspect}"
	
	# IO Buffering...
	stream = Async::IO::Stream.new(peer)
	
	framer = Protocol::HTTP2::Framer.new(stream)
	client = Protocol::HTTP2::Client.new(framer)
	
	puts "Sending connection preface..."
	client.send_connection_preface
	
	puts "Creating stream..."
	stream = client.create_stream
	
	headers = [
		[":scheme", endpoint.scheme],
		[":method", "GET"],
		[":authority", "www.google.com"],
		[":path", endpoint.path],
		["accept", "*/*"],
	]
	
	puts "Sending request on stream id=#{stream.id} state=#{stream.state}..."
	stream.send_headers(nil, headers, Protocol::HTTP2::END_STREAM)
	
	puts "Waiting for response..."
	$count = 0
	
	def stream.process_headers(frame)
		headers = super
		puts "Got response headers: #{headers} (#{frame.end_stream?})"
	end
	
	def stream.receive_data(frame)
		data = super
		
		$count += data.scan(/kittens/).count
		
		puts "Got response data: #{data.bytesize}"
	end
	
	until stream.closed?
		frame = client.read_frame
	end
	
	puts "Got #{$count} kittens!"
	
	puts "Closing client..."
	client.close
end

Contributing

We welcome contributions to this project.

1. Fork it.
2. Create your feature branch (git checkout -b my-new-feature).
3. Commit your changes (git commit -am 'Add some feature').
4. Push to the branch (git push origin my-new-feature).
5. Create new Pull Request.

Developer Certificate of Origin

This project uses the Developer Certificate of Origin. All contributors to this project must agree to this document to have their contributions accepted.

Contributor Covenant

This project is governed by the Contributor Covenant. All contributors and participants agree to abide by its terms.