Module: Async::WebSocket::Adapters::Rack

Includes:
Protocol::WebSocket::Headers
Defined in:
lib/async/websocket/adapters/rack.rb

Class Method Summary collapse

Class Method Details

.open(env, headers: [], protocols: [], handler: Connection, **options, &block) ⇒ Object 



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# File 'lib/async/websocket/adapters/rack.rb', line 36

def self.open(env, headers: [], protocols: [], handler: Connection, **options, &block)
  if request = env['async.http.request'] and Array(request.protocol).include?(PROTOCOL)
    env = nil
    
    # Select websocket sub-protocol:
    if requested_protocol = request.headers[SEC_WEBSOCKET_PROTOCOL]
      protocol = (requested_protocol & protocols).first
    end
    
    response = Response.for(request, headers, protocol: protocol, **options) do |stream|
      response = nil
      
      framer = Protocol::WebSocket::Framer.new(stream)
      
      connection = handler.call(framer, protocol)
      
      yield connection
      
      connection.close unless connection.closed?
    end
    
    request = nil
    headers = response.headers
    
    if protocol = response.protocol
      headers = Protocol::HTTP::Headers::Merged.new(headers, [
        ['rack.protocol', protocol]
      ])
    end
    
    return [response.status, headers.to_h, response.body]
  end
end

.websocket?(env) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/async/websocket/adapters/rack.rb', line 32

def self.websocket?(env)
  request = env['async.http.request'] and Array(request.protocol).include?(PROTOCOL)
end