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

Makefile

@@ -23,7 +23,7 @@ SRCS		 =	main.cpp \
 				base.cpp init.cpp close.cpp epoll_update.cpp signal.cpp \
 				accept.cpp request.cpp response.cpp \
 				method_get.cpp method_post.cpp method_delete.cpp \
-				run_loop.cpp \
+				run_loop.cpp timeout.cpp \
 				parser.cpp \
 				extraConfig.cpp \
 				postProcessing.cpp \

memo.txt

@@ -1,5 +1,4 @@
 IN 42 SUBJECT AND/OR PRIORITY :
-- Fix "href" in autoindex
 - CGI
 - chunked request (response not mandatory it seems)
 - Ecrire des tests !
@@ -9,7 +8,6 @@ IN 42 SUBJECT AND/OR PRIORITY :
 - replace atoi() with a better function to avoid overflow
 	like strtol : https://www32.cplusplus.com/reference/cstdlib/strtol/
 -----------------------------
-- 408 Request Timeout
 - gerer le champ "Accept" du client
 - gerer les ".." dans un URL (verifier que l'on ne sort pas du dossier "root")
 - do correct handling of special character in url (/rfc2119_files/errata.js.t%C3%A9l%C3%A9chargement -> /rfc2119_files/errata.js.téléchargement)

srcs/Client.cpp

@@ -8,6 +8,7 @@
 Client::Client()
 	: status(0),
 	header_complete(false),
+	request_complete(false),
 	read_body_size(0),
 	assigned_server(NULL),
 	assigned_location(NULL),
@@ -22,6 +23,7 @@ Client::Client()
 Client::Client(int afd, listen_socket *lsocket, std::string aport, std::string aip)
 	: status(0),
 	header_complete(false),
+	request_complete(false),
 	read_body_size(0),
 	assigned_server(NULL),
 	assigned_location(NULL),
@@ -130,6 +132,7 @@ void	Client::clear()
 {
 	clear_request();
 	header_complete = false;
+	request_complete = false;
 	read_body_size = 0;
 	assigned_server = NULL;
 	assigned_location = NULL;	

srcs/Client.hpp

@@ -46,6 +46,7 @@ class Client
 		std::string				response;
 		unsigned int			status;
 		bool					header_complete;
+		bool					request_complete;
 		size_t					read_body_size;
 		ServerConfig			*assigned_server; // cant be const cause of error_pages.operator[]
 		const LocationConfig	*assigned_location;

srcs/webserv/Webserv.hpp

@@ -76,14 +76,14 @@ class Webserv
 		void	_request(Client *client);
 		int		_read_request(Client *client);
 	// response.cpp
-		void					_response(Client *client);
-		int						_send_response(Client *client);
-		void					_append_base_headers(Client *client);
-		void					_construct_response(Client *client);
-		void					_process_method(Client *client);
-		void					_insert_status_line(Client *client);
-		void					_error_html_response(Client *client);
-		void					_append_body(Client *client, const std::string &body, const std::string &file_extension = "");
+		void	_response(Client *client);
+		int		_send_response(Client *client);
+		void	_append_base_headers(Client *client);
+		void	_construct_response(Client *client);
+		void	_process_method(Client *client);
+		void	_insert_status_line(Client *client);
+		void	_error_html_response(Client *client);
+		void	_append_body(Client *client, const std::string &body, const std::string &file_extension = "");
 		// ServerConfig			*_determine_process_server(Client *client); // cant be const cause of error_pages.operator[]
 		// const LocationConfig	*_determine_location(const ServerConfig &server, const std::string &path) const;
 		std::string				_determine_file_extension(const std::string &path) const;
@@ -116,12 +116,16 @@ class Webserv
 		void	_close_client(int fd);
 		void	_close_all_clients();
 		void	_close_all_listen_sockets();
+		void	_reopen_lsocket(std::vector<listen_socket>::iterator it);
+		void	_handle_epoll_error_lsocket(uint32_t events, std::vector<listen_socket>::iterator it);
+		void	_handle_epoll_error_client(uint32_t events, int fd);
 	// init.cpp
 		void	_bind(int socket_fd, in_port_t port, std::string host);
 		void	_listen(int socket_fd, unsigned int max_connections);
 		void	_init_http_status_map();
 		void	_init_mime_types_map();
-
+	// timeout.cpp
+		void	_timeout();
 };
 
 #endif

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);
+}

srcs/webserv/http_status.hpp

@@ -41,6 +41,7 @@
 # define S403 "403 Forbidden"
 # define S404 "404 Not Found"
 # define S405 "405 Method Not Allowed"
+# define S408 "408 Request Timeout"
 # define S413 "413 Content Too Large"
 
 # define S500 "500 Internal Server Error"

srcs/webserv/init.cpp

@@ -49,7 +49,7 @@ void	Webserv::init_virtual_servers(std::vector<ServerConfig>* servers)
 		// HUGO ADD END
 
 		_bind(new_socket.fd, std::atoi(it->port.c_str()), it->host);
-		_listen(new_socket.fd, 512); // 512 arbitrary
+		_listen(new_socket.fd, 42); // 42 arbitrary
 
 		if (_epoll_update(new_socket.fd, EPOLLIN, EPOLL_CTL_ADD) == -1)
 			throw std::runtime_error("Socket init");
@@ -89,7 +89,7 @@ void	Webserv::_listen(int socket_fd, unsigned int max_connections)
 
 void	Webserv::_init_http_status_map()
 {
-/*	"map.insert()" over "map.operator[]" :
+/*	"map.insert()" more appropriate than "map.operator[]" :
 **	http://www.uml.org.cn/c%2B%2B/pdf/EffectiveSTL.pdf#page=93
 */
 	typedef std::map<int, std::string>::value_type	status_pair;
@@ -110,6 +110,7 @@ void	Webserv::_init_http_status_map()
 	_http_status.insert(status_pair(403, S403));
 	_http_status.insert(status_pair(404, S404));
 	_http_status.insert(status_pair(405, S405));
+	_http_status.insert(status_pair(408, S408));
 	_http_status.insert(status_pair(413, S413));
 
 	_http_status.insert(status_pair(500, S500));

srcs/webserv/method_get.cpp

@@ -7,7 +7,10 @@ void	Webserv::_get(Client *client)
 	std::string		path = client->get_rq_abs_path();
 
 	std::cerr << "path before = " << path << "\n"; // DEBUG
-	path.replace(0, client->assigned_location->path.size(), client->assigned_location->root);
+	if (client->assigned_location->path == "/")
+		path.insert(0, client->assigned_location->root);
+	else
+		path.replace(0, client->assigned_location->path.size(), client->assigned_location->root);
 	std::cerr << "path after = " << path << "\n"; // DEBUG
 
 	// TMP HUGO ( We move this in process_switch() )

srcs/webserv/request.cpp

@@ -26,6 +26,7 @@ void	Webserv::_request(Client *client)
 	else if (ret == READ_COMPLETE)
 	{
 		_epoll_update(client->get_cl_fd(), EPOLLOUT, EPOLL_CTL_MOD);
+		client->request_complete = true;
 	}
 }
 

srcs/webserv/response.cpp

@@ -21,7 +21,7 @@ void	Webserv::_response(Client *client)
 	}
 	else if (ret == SEND_COMPLETE)
 	{
-		if (client->get_rq_headers("Connection") == "close")
+		if (client->get_rq_headers("Connection") == "close" || client->status == 408)
 			_close_client(client->get_cl_fd());
 		else
 		{

srcs/webserv/run_loop.cpp

@@ -21,35 +21,39 @@ void	Webserv::run()
 		if (nfds == -1)
 		{
 			std::perror("err epoll_wait()");
-			throw std::runtime_error("Epoll wait");
-		}
-		else if (nfds == 0)
-		{
-			if (!_clients.empty())
-			{
-				std::cerr << "Timeout " << TIMEOUT << "ms\n";
-				_close_all_clients();
-			}
+			if (errno == EINTR)
+				g_run = false;
+			else
+				throw std::runtime_error("Epoll wait");
 		}
+		else if (nfds == 0 && !_clients.empty())
+			_timeout();
 		i = 0;
 		while (i < nfds)
 		{
-			try
-			{
-				// TODO : handle EPOLLERR and EPOLLHUP
+			try {
 				it_socket = std::find(_listen_sockets.begin(), _listen_sockets.end(), events[i].data.fd);
-				if (it_socket != _listen_sockets.end() && events[i].events & EPOLLIN)
-					_accept_connection(*it_socket);
-				else if (events[i].events & EPOLLIN)
-					_request( &(*std::find(_clients.begin(), _clients.end(), events[i].data.fd)) );
-				else if (events[i].events & EPOLLOUT)
-					_response( &(*std::find(_clients.begin(), _clients.end(), events[i].data.fd)) );
+				if (it_socket != _listen_sockets.end())
+				{
+					if (events[i].events & EPOLLERR || events[i].events & EPOLLHUP)
+						_handle_epoll_error_lsocket(events[i].events, it_socket);
+					else if (events[i].events & EPOLLIN)
+						_accept_connection(*it_socket);
+				}
+				else
+				{
+					if (events[i].events & EPOLLERR || events[i].events & EPOLLHUP)
+						_handle_epoll_error_client(events[i].events, events[i].data.fd);
+					else if (events[i].events & EPOLLIN)
+						_request( &(*std::find(_clients.begin(), _clients.end(), events[i].data.fd)) );
+					else if (events[i].events & EPOLLOUT)
+						_response( &(*std::find(_clients.begin(), _clients.end(), events[i].data.fd)) );
+				}
 				++i;
 				if (!g_run)
 					break;
 			}
-			catch (const std::bad_alloc& e)
-			{
+			catch (const std::bad_alloc& e) {
 				std::cerr << e.what() << '\n';
 				_close_all_clients();
 				/* Swap to free the memory
@@ -57,8 +61,7 @@ void	Webserv::run()
 				std::vector<Client>().swap(_clients);
 				break;
 			}
-			catch (const std::exception& e)
-			{
+			catch (const std::exception& e) {
 				std::cerr << e.what() << '\n';
 				++i;
 			}

srcs/webserv/timeout.cpp

@@ -0,0 +1,18 @@
+
+#include "Webserv.hpp"
+
+void	Webserv::_timeout()
+{
+	std::cerr << "_timeout()\n";
+	std::vector<Client>::iterator	it = _clients.begin();
+	while (it != _clients.end())
+	{
+		if (!it->request_complete)
+		{
+			std::cerr << "timeout request fd " << it->get_cl_fd() << "\n";
+			it->status = 408;
+			_epoll_update(it->get_cl_fd(), EPOLLOUT, EPOLL_CTL_MOD);
+		}
+		++it;
+	}
+}