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// Classe Server
#ifndef SERVER_HH_
# define SERVER_HH_
#include <list>
#include <iostream>
#include <sys/socket.h>
#include <netinet/in.h>
#include <signal.h>
#include <poll.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
#include "data/Data.hh"
extern char gl_handle;
extern void signal_alarm(int);
template<class TYPEDATA> class Data;
class Server
{
public:
Server(const int& port, const unsigned int& nb_client_max)
{
_port = port;
_client_max = nb_client_max;
_fd = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
_sock_in = new struct sockaddr_in;
_sock_in->sin_family = PF_INET;
_sock_in->sin_port = htons(port);
_sock_in->sin_addr.s_addr = INADDR_ANY;
if ((bind(_fd, (struct sockaddr *)_sock_in, sizeof (*_sock_in)) == -1)
|| (listen(_fd, 5) == -1))
this->error();
std::cout << "Server started. Listening on port " << _port << std::endl;
_fd_client = new std::list<int>;
this->start_signal();
this->start();
}
void start()
{
int fd_client;
socklen_t len;
struct sockaddr_in sock_client;
len = sizeof (struct sockaddr_in);
while (gl_handle != -1 && this->_fd_client->size() < _client_max)
{
fd_client = 0;
if ((fd_client = accept(this->_fd,
(struct sockaddr *)&(sock_client), &len)) > 0)
gl_handle = gl_handle | 2;
std::list<int> list_fd;
if (2 == (gl_handle & 2))
{
this->accept_client(fd_client);
this->send_signal(fd_client);
std::cout << "Number of connected clients :"
<< this->_fd_client->size() << std::endl;
}
gl_handle = 0;
this->test_client();
}
}
void test_client()
{
if (_fd_client->size())
{
std::list<int>::const_iterator fd_client_tmp;
std::list<int>::const_iterator fd_client = _fd_client->begin();
int i = 0;
while (fd_client != _fd_client->end())
{
i++;
char c = 0;
errno = 0;
fd_client_tmp = fd_client;
read(*fd_client, &c, sizeof(char));
++fd_client;
if (errno == 0)
this->remove_client(*fd_client_tmp);
}
}
}
void error()
{
std::cerr << "Error server : ";
perror("");
exit(errno);
}
void remove_client(const int& fd)
{
_fd_client->remove(fd);
std::cout << "Client in the file descriptor : " << fd
<< " are disconnected" << std::endl;
std::cout << "Number of connected clients :"
<< this->_fd_client->size() << std::endl;
}
void wait_signal(std::list<int>& list_fd) // retourne la liste des files descriptors a lire
{
struct pollfd poll_fd[_fd_client->size()];
std::list<int>::const_iterator fd = _fd_client->begin();
for (int i = 0; fd != _fd_client->end(); ++fd, ++i)
{
poll_fd[i].fd = *fd;
poll_fd[i].events = POLLIN;
}
if (poll(poll_fd, _fd_client->size(), 0) < 0)
assert(0);
for (unsigned int i = 0; i < _fd_client->size(); ++i)
if (poll_fd[i].revents != 0)
{
unsigned char sig = 0;
unsigned int length = 0;
do
{
errno = 0;
length = read(poll_fd[i].fd, &sig, sizeof(unsigned char));
}
while (errno == 4);
if (errno)
{
perror("");
exit(errno);
}
if (length == 0)
remove_client(poll_fd[i].fd);
else
if (sig == 42)
{
list_fd.push_back(poll_fd[i].fd);
std::cout << "Reception signal sur le file descriptor :"
<< poll_fd[i].fd << std::endl;
}
else
{
std::cout << "Erreur de reception sur le file descriptor :"
<< poll_fd[i].fd << std::endl;
exit(2);
}
poll_fd[i].revents = 0;
}
}
void send_signal(const int& fd)
{
unsigned char sig = 42;
write(fd, &sig, sizeof(unsigned char));
}
void start_signal()
{
struct sigaction alarm;
alarm.sa_handler = signal_alarm;
alarm.sa_flags = 0;
sigemptyset(&(alarm.sa_mask));
sigaddset(&(alarm.sa_mask), SIGALRM);
sigaction(SIGALRM, &alarm, 0);
ualarm(1, 100000);
}
template<class TYPEDATA>
void send_data(const int& fd, const Data<TYPEDATA>& data)
{
data.send(fd);
}
template<class TYPEDATA>
void send_data(const Data<TYPEDATA>& data,
const std::list<int>& fd_client)
{
std::list<int>::const_iterator fd = fd_client.begin();
for (; fd != fd_client.end(); ++fd)
data.send(*fd);
}
template<class TYPEDATA>
void received_data(Data<TYPEDATA>& data, const std::list<int>& fd_client)
{
std::list<int>::const_iterator fd = fd_client.begin();
for (; fd != fd_client.end(); ++fd)
data.receive(*fd);
}
void accept_client(const int& fd)
{
std::cout << "Client connected on file descriptor: " << fd << std::endl;
_fd_client->push_back(fd);
}
int get_fd() const { return (_fd); }
int get_port() const { return (_port); }
std::list<int>* get_list_fd() const { return (_fd_client); }
unsigned int get_nb_client() const { return (_fd_client->size()); }
private:
std::list<int> *_fd_client;
struct sockaddr_in *_sock_in;
int _port;
unsigned int _client_max;
int _fd;
};
#endif // SERVER_HH_
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