Class: Async::HTTY::Server

Inherits:
Protocol::HTTP::Middleware
  • Object
show all
Defined in:
lib/async/htty/server.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(app, protocol: Protocol::HTTY) ⇒ Server

Returns a new instance of Server.



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# File 'lib/async/htty/server.rb', line 79

def initialize(app, protocol: Protocol::HTTY)
	super(app)
	@protocol = protocol
end

Instance Attribute Details

#protocol ⇒ Object (readonly)

Returns the value of attribute protocol.



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# File 'lib/async/htty/server.rb', line 84

def protocol
  @protocol
end

Class Method Details

.for(**options, &block) ⇒ Object 



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# File 'lib/async/htty/server.rb', line 16

def self.for(**options, &block)
	self.new(block, **options)
end

.open(app = nil, input: $stdin, output: $stdout, error: $stderr, env: ENV, **options, &block) ⇒ Object 



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# File 'lib/async/htty/server.rb', line 28

def self.open(app = nil, input: $stdin, output: $stdout, error: $stderr, env: ENV, **options, &block)
	app ||= block
	server = self.new(app, **options)

	case env["HTTY"]
	when "0"
		raise DisabledError, "HTTY is disabled!"
	when nil
		$stderr.puts "HTTY is not supported by this environment, visit https://htty.dev for more information."
		raise UnsupportedError, "HTTY is not supported by this environment"
	end

	unless input.respond_to?(:tty?) && input.tty?
		raise UnsupportedError, "HTTY requires a TTY input stream"
	end
	
	original_input = input.dup
	original_output = output.dup
	original_error = error.dup
	
	stream = ::Protocol::HTTY::Stream.new(original_input, original_output)
	input.reopen(File::NULL)
	output.reopen(File::NULL)
	
	# Redirect error output to a file if specified, otherwise discard it:
	if error_log = ENV.fetch("HTTY_ERROR_LOG", nil)
		error.reopen(File.open(error_log, "a"))
	else
		error.reopen(File::NULL)
	end
	
	Sync do |task|
		with_raw_terminal(original_input) do
			server.accept(stream, task: task)
		end
	end
	
ensure
	if original_input
		input.reopen(original_input)
	end
	
	if original_output
		output.reopen(original_output)
	end
	
	if original_error
		error.reopen(original_error)
	end
end

.with_raw_terminal(input, &block) ⇒ Object 



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# File 'lib/async/htty/server.rb', line 20

def self.with_raw_terminal(input, &block)
	if input.respond_to?(:tty?) && input.tty? && input.respond_to?(:raw)
		input.raw(&block)
	else
		block.call
	end
end

Instance Method Details

#accept(stream, task: ::Async::Task.current) ⇒ Object 



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# File 'lib/async/htty/server.rb', line 86

def accept(stream, task: ::Async::Task.current)
	connection = @protocol.server(stream)
	
	connection.each do |request|
		self.call(request)
	end
	
	Array(task.children).each(&:wait)
ensure
	if connection and !connection.closed?
		connection.send_goaway rescue nil
		connection.close
	end
end