bool DNS::HostByName(Exception& ex, const char* hostname, HostEntry& host) {
if (!Net::InitializeNetwork(ex))
return false;
struct addrinfo* pAI;
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME | AI_ADDRCONFIG;
int rc = getaddrinfo(hostname, NULL, &hints, &pAI);
if (rc == 0) {
host.set(ex,pAI);
freeaddrinfo(pAI);
return true;
}
SetAIError(ex,rc, " (hostname=",hostname,")");
return false;
}
// BEWARE blocking method!!
bool DNS::HostByAddress(Exception& ex,const IPAddress& address, HostEntry& host) {
if (!Net::InitializeNetwork(ex))
return false;
SocketAddress sa;
sa.set(address, 0);
static char fqname[1024];
int rc = getnameinfo(sa.addr(), sa.size(), fqname, sizeof(fqname), NULL, 0, NI_NAMEREQD);
if (rc == 0) {
struct addrinfo* pAI;
struct addrinfo hints;
memset(&hints, 0, sizeof(hints));
hints.ai_flags = AI_CANONNAME | AI_ADDRCONFIG;
rc = getaddrinfo(fqname, NULL, &hints, &pAI);
if (rc == 0) {
host.set(ex, pAI);
freeaddrinfo(pAI);
return true;
}
}
SetAIError(ex, rc, " (address=",address.toString(),")");
return false;
}
