EthernetServer as class member

Using Arduino Networking, Protocols, and Devices
1

Hi everyone, I have a problem with a class, this class is about a web server, I declared two members: server and client, the type of the members are EthernetServer and EthernetClient respectively, but, when i created an object from the class, the member server do not work, when i try access by the browser with the ip address nothing happens, i will attach the code, i hope someone can help me, please :confused:

#include "SPI.h"
#include "Ethernet.h"

class EthernetHTTPServer {
	private:
		EthernetServer server;
		EthernetClient client;
		
	public:
		EthernetHTTPServer(unsigned int port = 80): server(port), client() {
			server.begin();
		}
		
		bool listen() {
			client = server.available();
			if(client != false) {
				while(client.available()) {
					Serial.write(client.read());
				}
				client.print("HTTP/1.1 200 OK\r\n");
				client.print("Content-Type: text/html\r\n");
				client.print("Connection: close\r\n");
				client.print("\r\n");
				client.print("<!DOCTYPE html>\r\n");
				client.print("<html>\r\n");
				client.print("<head>\r\n");
				client.print("<meta charset=\"UTF-8\">\r\n");
				client.print("<title>Hello World!</title>\r\n");
				client.print("</head>\r\n");
				client.print("<body>\r\n");
				client.print("<p>Hello World!</p>\r\n");
				client.print("</body>\r\n");
				client.print("</html>\r\n");
				client.flush();
				client.stop();
			}
		}
};

EthernetHTTPServer server;

void setup() {
	unsigned char mac[] = {0xf4, 0xd2, 0xa1, 0x44, 0xc2, 0xb3};
	Ethernet.begin(mac);
	Serial.begin(9600);
	Serial.print("Server at: ");
	Serial.print(Ethernet.localIP());
	Serial.print("\r\n");
}

void loop() {
	server.listen();
}