class Falcon::Hosts

def add(name, host = Host.new, &block)
	host = Host.new
	
	yield host if block_given?
	
	@named[name] = host.freeze
end

def client_endpoints
	Hash[
		@named.collect{|name, host| [name, host.endpoint]}
	]
end

def each(&block)
	@named.each(&block)
end

def endpoint
	@server_endpoint ||= Async::HTTP::URLEndpoint.parse(
		'https://[::]',
		ssl_context: self.ssl_context,
		reuse_address: true
	)
end

def host_context(socket, hostname)
	if host = @named[hostname]
		socket.hostname = hostname
		
		return host.ssl_context
	end
end

def initialize
	@named = {}
	@server_context = nil
	@server_endpoint = nil
end

def proxy
	Proxy.new(Falcon::BadRequest, self.client_endpoints)
end

def ssl_context
	@server_context ||= OpenSSL::SSL::SSLContext.new.tap do |context|
		context.servername_cb = Proc.new do |socket, hostname|
			self.host_context(socket, hostname)
		end
		
		context.session_id_context = "falcon"
		
		context.alpn_protocols = DEFAULT_ALPN_PROTOCOLS
		
		context.set_params
		
		context.setup
	end
end