_exec_script() close fd and reset signal

+ somes more adjustements in _exec_script()
+ rough notes for non blocking CGI

srcs/webserv/close.cpp

@@ -21,13 +21,21 @@ void	Webserv::_close_client(int fd)
 
 void	Webserv::_close_all_clients()
 {
-	while (!_clients.empty())
+	_close_all_clients_fd();
+	_clients.clear();
+}
+
+void	Webserv::_close_all_clients_fd()
+{
+	std::vector<Client>::iterator	it = _clients.begin();
+	std::vector<Client>::iterator	it_end = _clients.end();
+	while (it != it_end)
 	{
 		// _epoll_update(_clients.back().fd, 0, EPOLL_CTL_DEL); // normalement superflu, DEBUG
 		std::cerr << "close fd " << _clients.back().get_cl_fd() << "\n";
 		if (::close(_clients.back().get_cl_fd()) == -1)
 			std::perror("err close()");
-		_clients.pop_back();
+		++it;
 	}
 }