class Protocol::Rack::Adapter::Rack31

  • More efficient body streaming
    - Direct protocol support via {RACK_PROTOCOL}
    - Better handling of empty request bodies
    Key improvements include:
    It extends the Rack 3 adapter with improved request body handling and protocol support.
    The Rack 3.1 adapter provides compatibility with Rack 3.1.x applications.

def make_environment(request)

@returns [Hash] The Rack 3.1 environment hash.
@parameter request [Protocol::HTTP::Request] The incoming request.

Unlike Rack 3, this adapter has improved body handling and protocol support.
Sets up all required Rack 3.1 environment variables and processes the request.
Create a Rack 3.1 environment hash for the request. 
def make_environment(request)
	request_path, query_string = request.path.split("?", 2)
	server_name, server_port = (request.authority || "").split(":", 2)
	
	env = {
		PROTOCOL_HTTP_REQUEST => request,
		
		RACK_ERRORS => $stderr,
		RACK_LOGGER => self.logger,
		
		# The response finished callbacks:
		RACK_RESPONSE_FINISHED => [],
		
		# The HTTP request method, such as "GET" or "POST". This cannot ever be an empty string, and so is always required.
		CGI::REQUEST_METHOD => request.method,
		
		# The initial portion of the request URL's "path" that corresponds to the application object, so that the application knows its virtual "location". This may be an empty string, if the application corresponds to the "root" of the server.
		CGI::SCRIPT_NAME => "",
		
		# The remainder of the request URL's "path", designating the virtual "location" of the request's target within the application. This may be an empty string, if the request URL targets the application root and does not have a trailing slash. This value may be percent-encoded when originating from a URL.
		CGI::PATH_INFO => request_path,
		CGI::REQUEST_PATH => request_path,
		CGI::REQUEST_URI => request.path,
		
		# The portion of the request URL that follows the ?, if any. May be empty, but is always required!
		CGI::QUERY_STRING => query_string || "",
		
		# The server protocol (e.g. HTTP/1.1):
		CGI::SERVER_PROTOCOL => request.version,
		
		# The request scheme:
		RACK_URL_SCHEME => request.scheme,
		
		# I'm not sure what sane defaults should be here:
		CGI::SERVER_NAME => server_name,
	}
	
	# SERVER_PORT is optional but must not be set if it is not present.
	if server_port
		env[CGI::SERVER_PORT] = server_port
	end
	
	# The request protocol, either from the upgrade header or the HTTP/2 pseudo header of the same name.
	if protocol = request.protocol
		env[RACK_PROTOCOL] = protocol
	end
	
	if body = request.body
		if body.empty?
			body.close
		else
			env[RACK_INPUT] = Input.new(body)
		end
	end
	
	self.unwrap_request(request, env)
	
	return env
end