int main(int argc, char *argv[]) {
init_slog("hw_server", "config/log.cfg", 3, NULL);
slog(0, SLOG_INFO, "**************************************************");
slog(0, SLOG_INFO, "HomeWatch Server v1.0, © 2015, Matthew Goulart");
slog(0, SLOG_INFO, "**************************************************");
//Configure buffer to output immediately
setvbuf(stdout, 0, _IONBF, 0);
//Mysql version and initializations
slog(0, SLOG_INFO, "MySQL client version: %s", mysql_get_client_info());
//Initialize the FDs for the sockets
int socketfd, clientfd;
//Initialize the list of FDs to monitor for input
fd_set fdMonitor;
//Initialize timer for select()
struct timeval select_timeout;
select_timeout.tv_sec = 3;
select_timeout.tv_usec = 0;
//Initialize the thread id
pthread_t thread;
slog(0, SLOG_INFO, "Starting server...");
slog(0, SLOG_INFO, "Creating listen socket...");
//Create the listen socket
socketfd = create_inet_server_socket("0.0.0.0", "5677", LIBSOCKET_TCP,
LIBSOCKET_IPv4, 0);
if (socketfd < 0) {
slog(2, SLOG_ERROR, "Error creating listen socket!");
return -1;
} else {
slog(0, SLOG_INFO, "Listening...");
}
while (1) {
FD_ZERO(&fdMonitor);
FD_SET(socketfd, &fdMonitor);
FD_SET(STDIN_FILENO, &fdMonitor);
select_timeout.tv_sec = 3;
select_timeout.tv_usec = 0;
select(sizeof(fdMonitor) * 8, &fdMonitor, NULL, NULL,
&select_timeout);
if (FD_ISSET(socketfd, &fdMonitor)) {
clientfd = accept_inet_stream_socket(socketfd, 0, 0, 0, 0, 0, 0);
pthread_create(&thread, NULL, async_sensor_communicate, clientfd);
}
}
return 0;
}
int main(void)
{
int sfd, bytes, ret;
char src_host[128], src_service[7], buf[16];
src_host[127] = 0;
src_service[6] = 0;
sfd = create_inet_server_socket("0.0.0.0","1234",UDP,IPv4,0);
if ( -1 == sfd )
{
perror("couldn't create server\n");
exit(1);
}
printf("Socket up and running\n");
while ( 1 )
{
memset(buf,0,16);
ret = bytes = recvfrom_inet_dgram_socket(sfd,buf,15,src_host,127,src_service,6,0,NUMERIC);
if ( ret < 0 )
{
perror(0);
exit(1);
}
ret = sendto_inet_dgram_socket(sfd,buf,bytes,src_host,src_service,0);
if ( ret < 0 )
{
perror(0);
exit(1);
}
printf("Connection from %s port %s: %s (%i)\n",src_host,src_service,buf,bytes);
printf("Connection processed\n");
}
ret = destroy_inet_socket(sfd);
if ( ret < 0 )
{
perror(0);
exit(1);
}
return 0;
}
int main(void)
{
int cfd, sfd, ret;
char* buf = calloc(16,1);
ret = sfd = create_inet_server_socket("::","55555",LIBSOCKET_TCP,LIBSOCKET_IPv6,0);
if ( ret < 0 )
{
perror(0);
exit(1);
}
ret = cfd = accept_inet_stream_socket(sfd,0,0,0,0,0,0);
if ( ret < 0 )
{
perror(0);
exit(1);
}
ret = read(cfd,buf,15);
if ( ret < 0 )
{
perror(0);
exit(1);
}
printf("%s\n",buf);
ret = destroy_inet_socket(sfd);
if ( ret < 0 )
{
perror(0);
exit(1);
}
return 0;
}
int create_multicast_socket(const char* group, const char* port, const char* if_name)
{
int sfd, return_value;
struct sockaddr maddr, localif;
struct addrinfo hints, *result;
struct ip_mreqn mreq4;
struct ipv6_mreq mreq6;
struct in_addr any;
struct ifreq interface;
memset(&maddr,0,sizeof(maddr));
memset(&localif,0,sizeof(localif));
memset(&mreq4,0,sizeof(mreq4));
memset(&mreq6,0,sizeof(mreq6));
memset(&hints,0,sizeof(hints));
memset(&interface,0,sizeof(interface));
if ( -1 == check_error(sfd = create_inet_server_socket(group,port,LIBSOCKET_UDP,LIBSOCKET_BOTH,0)) )
{
return -1;
}
hints.ai_socktype = SOCK_DGRAM;
hints.ai_family = AF_UNSPEC;
if ( 0 != (return_value = getaddrinfo(group,port,&hints,&result)) )
{
int errno_saved = errno;
# ifdef VERBOSE
const char* errstring = gai_strerror(return_value);
debug_write(errstring);
# endif
close(sfd);
errno = errno_saved;
return -1;
}
if ( result->ai_family == AF_INET )
{
// Result is IPv4 address.
mreq4.imr_multiaddr = ((struct sockaddr_in*)result->ai_addr)->sin_addr;
if ( if_name == NULL )
{
mreq4.imr_ifindex = 0;
any.s_addr = INADDR_ANY;
mreq4.imr_address = any;
} else
{
memcpy(interface.ifr_name,if_name,strlen(if_name) > IFNAMSIZ ? IFNAMSIZ : strlen(if_name));
if ( -1 == check_error(ioctl(sfd,SIOCGIFINDEX,&interface)) )
{
int errno_saved = errno;
close(sfd);
errno = errno_saved;
return -1;
}
mreq4.imr_ifindex = interface.ifr_ifindex;
}
if ( -1 == check_error(setsockopt(sfd,IPPROTO_IP,IP_ADD_MEMBERSHIP,&mreq4,sizeof(struct ip_mreqn))) )
{
int errno_saved = errno;
close(sfd);
errno = errno_saved;
return -1;
}
if ( -1 == check_error(setsockopt(sfd,IPPROTO_IP,IP_MULTICAST_IF,&mreq4,sizeof(struct ip_mreqn))) )
{
int errno_saved = errno;
close(sfd);
errno = errno_saved;
return -1;
}
// Setup finished.
//
} else if ( result->ai_family == AF_INET6 )
{
mreq6.ipv6mr_multiaddr = ((struct sockaddr_in6*)result->ai_addr)->sin6_addr;
mreq6.ipv6mr_interface = 0;
if ( if_name == NULL )
mreq6.ipv6mr_interface = 0;
else
{
memcpy(interface.ifr_name,if_name,strlen(if_name) > IFNAMSIZ ? IFNAMSIZ : strlen(if_name));
if ( -1 == check_error(ioctl(sfd,SIOCGIFINDEX,&interface)) )
{
int errno_saved = errno;
close(sfd);
errno = errno_saved;
return -1;
}
mreq6.ipv6mr_interface = interface.ifr_ifindex;
}
if ( -1 == check_error(setsockopt(sfd,IPPROTO_IPV6,IPV6_ADD_MEMBERSHIP,&mreq6,sizeof(struct ipv6_mreq))) )
{
int errno_saved = errno;
close(sfd);
errno = errno_saved;
return -1;
}
if ( -1 == check_error(setsockopt(sfd,IPPROTO_IPV6,IPV6_MULTICAST_IF,&mreq6.ipv6mr_interface,sizeof(mreq6.ipv6mr_interface))) )
{
int errno_saved = errno;
close(sfd);
errno = errno_saved;
return -1;
}
}
return sfd;
}
