added timeout response (status 408)

+ added EPOLLERR and EPOLLHUP handling
+ fix root substitution for default "/" location (temp or permanent ?)
+ tested siege a little, seems good

srcs/webserv/close.cpp

@@ -42,3 +42,71 @@ void	Webserv::_close_all_listen_sockets()
 		_listen_sockets.pop_back();
 	}
 }
+
+void	Webserv::_reopen_lsocket(std::vector<listen_socket>::iterator it)
+{
+/*
+**	Many common code with init_virtual_servers(). Could refactor it.
+*/
+	int	ret;
+
+	std::cerr << "close lsocket " << it->fd << "\n";
+	if (::close(it->fd) == -1)
+		std::perror("err close()");
+	std::cerr << "try to reopen lsocket\n";
+	ret = ::socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, 0); // (SOCK_CLOEXEC) for CGI fork ?
+	if (ret == -1)
+	{
+		std::perror("err socket()");
+		_listen_sockets.erase(it);
+		return;
+	}
+	it->fd = ret;
+
+	// HUGO ADD
+	// allow socket descriptor to be reuseable
+	// I just copied it from https://www.ibm.com/docs/en/i/7.2?topic=designs-example-nonblocking-io-select
+	int	on = 1;
+	if (setsockopt(it->fd, SOL_SOCKET,  SO_REUSEADDR, &on, sizeof(on)) < 0)
+	{
+		::perror("err setsockopt()");
+		_listen_sockets.erase(it);
+		return;
+	}
+	// HUGO ADD END
+
+	try {
+		_bind(it->fd, std::atoi(it->port.c_str()), it->host);
+		_listen(it->fd, 42); // 42 arbitrary
+	}
+	catch (const std::exception& e) {
+		std::cerr << e.what() << '\n';
+		_listen_sockets.erase(it);
+		return;
+	}
+
+	if (_epoll_update(it->fd, EPOLLIN, EPOLL_CTL_ADD) == -1)
+	{
+		_listen_sockets.erase(it);
+		return;
+	}
+	std::cerr << "reopen success\n";
+}
+
+void	Webserv::_handle_epoll_error_lsocket(uint32_t events, std::vector<listen_socket>::iterator it)
+{
+	if (events & EPOLLERR)
+		std::cerr << "EPOLLERR on lsocket fd " << it->fd << "\n"; // DEBUG
+	if (events & EPOLLHUP)
+		std::cerr << "EPOLLHUP on lsocket fd " << it->fd << "\n"; // DEBUG
+	_reopen_lsocket(it);
+}
+
+void	Webserv::_handle_epoll_error_client(uint32_t events, int fd)
+{
+	if (events & EPOLLERR)
+		std::cerr << "EPOLLERR on client fd " << fd << "\n"; // DEBUG
+	if (events & EPOLLHUP)
+		std::cerr << "EPOLLHUP on client fd " << fd << "\n"; // DEBUG
+	_close_client(fd);
+}