UDPCarrier* UDPCarrier::Create(string bindIp, uint16_t bindPort,
uint16_t ttl, uint16_t tos) {
//1. Create the socket
int sock = socket(AF_INET, SOCK_DGRAM, 0);
if (sock < 0) {
int err = errno;
FATAL("Unable to create socket: (%d) %s", err, strerror(err));
return NULL;
}
//2. fd options
if (!setFdOptions(sock, true)) {
FATAL("Unable to set fd options");
CLOSE_SOCKET(sock);
return NULL;
}
if (tos <= 255) {
if (!setFdTOS(sock, (uint8_t) tos)) {
FATAL("Unable to set tos");
CLOSE_SOCKET(sock);
return NULL;
}
}
//3. bind if necessary
sockaddr_in bindAddress;
memset(&bindAddress, 0, sizeof (bindAddress));
if (bindIp != "") {
bindAddress.sin_family = PF_INET;
bindAddress.sin_addr.s_addr = inet_addr(STR(bindIp));
bindAddress.sin_port = EHTONS(bindPort); //----MARKED-SHORT----
if (bindAddress.sin_addr.s_addr == INADDR_NONE) {
FATAL("Unable to bind on address %s:%hu", STR(bindIp), bindPort);
CLOSE_SOCKET(sock);
return NULL;
}
uint32_t testVal = EHTONL(bindAddress.sin_addr.s_addr);
if ((testVal > 0xe0000000) && (testVal < 0xefffffff)) {
INFO("Subscribe to multicast %s:%"PRIu16, STR(bindIp), bindPort);
int activateBroadcast = 1;
if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &activateBroadcast,
sizeof (activateBroadcast)) != 0) {
int err = errno;
FATAL("Unable to activate SO_BROADCAST on the socket: (%d) %s", err, strerror(err));
return NULL;
}
if (ttl <= 255) {
if (!setFdMulticastTTL(sock, (uint8_t) ttl)) {
FATAL("Unable to set ttl");
CLOSE_SOCKET(sock);
return NULL;
}
}
} else {
if (ttl <= 255) {
if (!setFdTTL(sock, (uint8_t) ttl)) {
FATAL("Unable to set ttl");
CLOSE_SOCKET(sock);
return NULL;
}
}
}
if (bind(sock, (sockaddr *) & bindAddress, sizeof (sockaddr)) != 0) {
int err = errno;
FATAL("Unable to bind on address: udp://%s:%"PRIu16"; Error was: (%d) %s",
STR(bindIp), bindPort, err, strerror(err));
CLOSE_SOCKET(sock);
return NULL;
}
if ((testVal > 0xe0000000) && (testVal < 0xefffffff)) {
struct ip_mreq group;
group.imr_multiaddr.s_addr = inet_addr(STR(bindIp));
group.imr_interface.s_addr = INADDR_ANY;
if (setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *) &group, sizeof (group)) < 0) {
FATAL("Adding multicast group error");
CLOSE_SOCKET(sock);
return NULL;
}
}
}
//4. Create the carrier
UDPCarrier *pResult = new UDPCarrier(sock);
pResult->_nearAddress = bindAddress;
return pResult;
}
UDPCarrier* UDPCarrier::Create(string bindIp, uint16_t bindPort, uint16_t ttl,
uint16_t tos, string ssmIp) {
//1. Create the socket
int sock = socket(AF_INET, SOCK_DGRAM, 0);
if ((sock < 0) || (!setFdCloseOnExec(sock))) {
int err = LASTSOCKETERROR;
FATAL("Unable to create socket: %d", err);
return NULL;
}
//2. fd options
if (!setFdOptions(sock, true)) {
FATAL("Unable to set fd options");
CLOSE_SOCKET(sock);
return NULL;
}
if (tos <= 255) {
if (!setFdTOS(sock, (uint8_t) tos)) {
FATAL("Unable to set tos");
CLOSE_SOCKET(sock);
return NULL;
}
}
//3. bind if necessary
sockaddr_in bindAddress;
memset(&bindAddress, 0, sizeof (bindAddress));
if (bindIp != "") {
bindAddress.sin_family = PF_INET;
bindAddress.sin_addr.s_addr = inet_addr(STR(bindIp));
bindAddress.sin_port = EHTONS(bindPort); //----MARKED-SHORT----
if (bindAddress.sin_addr.s_addr == INADDR_NONE) {
FATAL("Unable to bind on address %s:%hu", STR(bindIp), bindPort);
CLOSE_SOCKET(sock);
return NULL;
}
uint32_t testVal = EHTONL(bindAddress.sin_addr.s_addr);
if ((testVal > 0xe0000000) && (testVal < 0xefffffff)) {
INFO("Subscribe to multicast %s:%"PRIu16, STR(bindIp), bindPort);
BOOL activateBroadcast = FALSE;
if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char *) &activateBroadcast,
sizeof (activateBroadcast)) != 0) {
int err = LASTSOCKETERROR;
FATAL("Unable to activate SO_BROADCAST on the socket: %d", err);
return NULL;
}
if (ttl <= 255) {
if (!setFdMulticastTTL(sock, (uint8_t) ttl)) {
FATAL("Unable to set ttl");
CLOSE_SOCKET(sock);
return NULL;
}
}
} else {
if (ttl <= 255) {
if (!setFdTTL(sock, (uint8_t) ttl)) {
FATAL("Unable to set ttl");
CLOSE_SOCKET(sock);
return NULL;
}
}
}
if (bind(sock, (sockaddr *) & bindAddress, sizeof (sockaddr)) != 0) {
int err = LASTSOCKETERROR;
FATAL("Unable to bind on address: udp://%s:%"PRIu16"; Error was: %d",
STR(bindIp), bindPort, err);
CLOSE_SOCKET(sock);
return NULL;
}
if ((testVal > 0xe0000000) && (testVal < 0xefffffff)) {
if (!setFdJoinMulticast(sock, bindIp, bindPort, ssmIp)) {
FATAL("Adding multicast failed");
CLOSE_SOCKET(sock);
return NULL;
}
}
}
//4. Create the carrier
UDPCarrier *pResult = new UDPCarrier(sock);
pResult->_nearAddress = bindAddress;
return pResult;
}
