TSharedRef<FInternetAddr> FSocketSubsystemIOS::GetLocalHostAddr(FOutputDevice& Out, bool& bCanBindAll)
{
TSharedRef<FInternetAddr> HostAddr = CreateInternetAddr();
HostAddr->SetAnyAddress();
ifaddrs* Interfaces = NULL;
int32 WifiAddress;
bool bWasWifiSet = false;
int32 CellAddress;
bool bWasCellSet = false;
// get all of the addresses
if (getifaddrs(&Interfaces) == 0)
{
// Loop through linked list of interfaces
for (ifaddrs* Travel = Interfaces; Travel != NULL; Travel = Travel->ifa_next)
{
if (Travel->ifa_addr->sa_family == AF_INET)
{
if (strcmp(Travel->ifa_name, "en0") == 0)
{
WifiAddress = ((sockaddr_in*)Travel->ifa_addr)->sin_addr.s_addr;
bWasWifiSet = true;
// this is the best, no need to go on
break;
}
else if (strcmp(Travel->ifa_name, "pdp_ip0") == 0)
{
CellAddress = ((sockaddr_in*)Travel->ifa_addr)->sin_addr.s_addr;
bWasCellSet = true;
}
}
}
// Free memory
freeifaddrs(Interfaces);
if (bWasWifiSet)
{
HostAddr->SetIp(WifiAddress);
UE_LOG(LogIOS, Log, TEXT("Host addr is WIFI: %s"), *HostAddr->ToString(false));
}
else if (bWasCellSet)
{
HostAddr->SetIp(CellAddress);
UE_LOG(LogIOS, Log, TEXT("Host addr is CELL: %s"), *HostAddr->ToString(false));
}
else
{
UE_LOG(LogIOS, Log, TEXT("Host addr is INVALID"));
}
}
// return the newly created address
return HostAddr;
}
TSharedRef<FInternetAddr> FSocketSubsystemLinux::GetLocalHostAddr(FOutputDevice& Out, bool& bCanBindAll)
{
// get parent address first
TSharedRef<FInternetAddr> Addr = FSocketSubsystemBSD::GetLocalHostAddr(Out, bCanBindAll);
// If the address is not a loopback one (or none), return it.
uint32 ParentIp = 0;
Addr->GetIp(ParentIp); // will return in host order
if (ParentIp != 0 && (ParentIp & 0xff000000) != 0x7f000000)
{
return Addr;
}
// If superclass got the address from command line, honor that override
TCHAR Home[256]=TEXT("");
if (FParse::Value(FCommandLine::Get(),TEXT("MULTIHOME="),Home,ARRAY_COUNT(Home)))
{
TSharedRef<FInternetAddr> TempAddr = CreateInternetAddr();
bool bIsValid = false;
TempAddr->SetIp(Home, bIsValid);
if (bIsValid)
{
return Addr;
}
}
// we need to go deeper... (see http://unixhelp.ed.ac.uk/CGI/man-cgi?netdevice+7)
int TempSocket = socket(PF_INET, SOCK_STREAM, 0);
if (TempSocket)
{
ifreq IfReqs[8];
ifconf IfConfig;
FMemory::Memzero(IfConfig);
IfConfig.ifc_req = IfReqs;
IfConfig.ifc_len = sizeof(IfReqs);
int Result = ioctl(TempSocket, SIOCGIFCONF, &IfConfig);
if (Result == 0)
{
for (int32 IdxReq = 0; IdxReq < ARRAY_COUNT(IfReqs); ++IdxReq)
{
// grab the first non-loobpack one which is up
int ResultFlags = ioctl(TempSocket, SIOCGIFFLAGS, &IfReqs[IdxReq]);
if (ResultFlags == 0 &&
(IfReqs[IdxReq].ifr_flags & IFF_UP) &&
(IfReqs[IdxReq].ifr_flags & IFF_LOOPBACK) == 0)
{
int32 NetworkAddr = reinterpret_cast<sockaddr_in *>(&IfReqs[IdxReq].ifr_addr)->sin_addr.s_addr;
Addr->SetIp(ntohl(NetworkAddr));
break;
}
}
}
else
{
int ErrNo = errno;
UE_LOG(LogSockets, Warning, TEXT("ioctl( ,SIOGCIFCONF, ) failed, errno=%d (%s)"), ErrNo, ANSI_TO_TCHAR(strerror(ErrNo)));
}
close(TempSocket);
}
return Addr;
}
