class Async::HTTP::URLEndpoint

def self.parse(string, **options)
	url = URI.parse(string).normalize
	
	self.new(url, **options)
end

def address
	endpoint.address
end

def alpn_protocols
	@options[:alpn_protocols] || DEFAULT_ALPN_PROTOCOLS
end

def authority
	if default_port?
		hostname
	else
		"#{hostname}:#{port}"
	end
end

def bind(*args, &block)
	endpoint.bind(*args, &block)
end

def build_endpoint(endpoint = nil)
	endpoint ||= Async::IO::Endpoint.tcp(hostname, port, tcp_options)
	
	if secure?
		# Wrap it in SSL:
		return Async::IO::SSLEndpoint.new(endpoint,
			ssl_context: self.ssl_context,
			hostname: self.hostname
		)
	end
	
	return endpoint
end

def connect(*args, &block)
	endpoint.connect(*args, &block)
end

def default_port
	secure? ? 443 : 80
end

def default_port?
	port == default_port
end

def each
	return to_enum unless block_given?
	
	self.endpoint.each do |endpoint|
		yield self.class.new(@url, endpoint, @options)
	end
end

def endpoint
	@endpoint ||= build_endpoint
end

def eql? other
	self.key.eql? other.key
end

def hash
	self.key.hash
end

def hostname
	@options[:hostname] || @url.hostname
end

def initialize(url, endpoint = nil, **options)
	super(**options)
	
	raise ArgumentError.new("URL must be absolute (include scheme, host): #{url}") unless url.absolute?
	
	@url = url
	@endpoint = endpoint
end

def key
	[@url.scheme, @url.userinfo, @url.host, @url.port, @options]
end

def path
	@url.request_uri
end

def port
	@options[:port] || @url.port || default_port
end

def protocol
	if secure?
		Protocol::HTTPS
	else
		Protocol::HTTP1
	end
end

def secure?
	['https', 'wss'].include?(@url.scheme)
end

def ssl_context
	@options[:ssl_context] || ::OpenSSL::SSL::SSLContext.new.tap do |context|
		if alpn_protocols = self.alpn_protocols
			context.alpn_protocols = alpn_protocols
		end
		
		context.set_params(
			verify_mode: self.ssl_verify_mode
		)
	end
end

def ssl_verify_mode
	case self.hostname
	when LOCALHOST
		OpenSSL::SSL::VERIFY_NONE
	else
		OpenSSL::SSL::VERIFY_PEER
	end
end

def tcp_options
	{reuse_port: @options[:reuse_port] ? true : false}
end

def to_s
	"\#<#{self.class} #{@url} #{@options.inspect}>"
end