bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup)
{
vIP.clear();
{
CNetAddr addr;
if (addr.SetSpecial(std::string(pszName))) {
vIP.push_back(addr);
return true;
}
}
struct addrinfo aiHint;
memset(&aiHint, 0, sizeof(struct addrinfo));
aiHint.ai_socktype = SOCK_STREAM;
aiHint.ai_protocol = IPPROTO_TCP;
#ifdef USE_IPV6
aiHint.ai_family = AF_UNSPEC;
#else
aiHint.ai_family = AF_INET;
#endif
#ifdef WIN32
aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
#else
aiHint.ai_flags = fAllowLookup ? AI_ADDRCONFIG : AI_NUMERICHOST;
#endif
struct addrinfo *aiRes = NULL;
int nErr = getaddrinfo(pszName, NULL, &aiHint, &aiRes);
if (nErr)
return false;
struct addrinfo *aiTrav = aiRes;
while (aiTrav != NULL && (nMaxSolutions == 0 || vIP.size() < nMaxSolutions))
{
if (aiTrav->ai_family == AF_INET)
{
assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in));
vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr));
}
#ifdef USE_IPV6
if (aiTrav->ai_family == AF_INET6)
{
assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in6));
vIP.push_back(CNetAddr(((struct sockaddr_in6*)(aiTrav->ai_addr))->sin6_addr));
}
#endif
aiTrav = aiTrav->ai_next;
}
freeaddrinfo(aiRes);
return (vIP.size() > 0);
}
bool static LookupIntern(const char* pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup)
{
vIP.clear();
{
CNetAddr addr;
if (addr.SetSpecial(std::string(pszName))) {
vIP.push_back(addr);
return true;
}
}
#ifdef HAVE_GETADDRINFO_A
struct in_addr ipv4_addr;
#ifdef HAVE_INET_PTON
if (inet_pton(AF_INET, pszName, &ipv4_addr) > 0) {
vIP.push_back(CNetAddr(ipv4_addr));
return true;
}
struct in6_addr ipv6_addr;
if (inet_pton(AF_INET6, pszName, &ipv6_addr) > 0) {
vIP.push_back(CNetAddr(ipv6_addr));
return true;
}
#else
ipv4_addr.s_addr = inet_addr(pszName);
if (ipv4_addr.s_addr != INADDR_NONE) {
vIP.push_back(CNetAddr(ipv4_addr));
return true;
}
#endif
#endif
struct addrinfo aiHint;
memset(&aiHint, 0, sizeof(struct addrinfo));
aiHint.ai_socktype = SOCK_STREAM;
aiHint.ai_protocol = IPPROTO_TCP;
aiHint.ai_family = AF_UNSPEC;
#ifdef WIN32
aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
#else
aiHint.ai_flags = fAllowLookup ? AI_ADDRCONFIG : AI_NUMERICHOST;
#endif
struct addrinfo* aiRes = NULL;
#ifdef HAVE_GETADDRINFO_A
struct gaicb gcb, *query = &gcb;
memset(query, 0, sizeof(struct gaicb));
gcb.ar_name = pszName;
gcb.ar_request = &aiHint;
int nErr = getaddrinfo_a(GAI_NOWAIT, &query, 1, NULL);
if (nErr)
return false;
do {
// Should set the timeout limit to a resonable value to avoid
// generating unnecessary checking call during the polling loop,
// while it can still response to stop request quick enough.
// 2 seconds looks fine in our situation.
struct timespec ts = {2, 0};
gai_suspend(&query, 1, &ts);
boost::this_thread::interruption_point();
nErr = gai_error(query);
if (0 == nErr)
aiRes = query->ar_result;
} while (nErr == EAI_INPROGRESS);
#else
int nErr = getaddrinfo(pszName, NULL, &aiHint, &aiRes);
#endif
if (nErr)
return false;
struct addrinfo* aiTrav = aiRes;
while (aiTrav != NULL && (nMaxSolutions == 0 || vIP.size() < nMaxSolutions)) {
if (aiTrav->ai_family == AF_INET) {
assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in));
vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr));
}
if (aiTrav->ai_family == AF_INET6) {
assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in6));
vIP.push_back(CNetAddr(((struct sockaddr_in6*)(aiTrav->ai_addr))->sin6_addr));
}
aiTrav = aiTrav->ai_next;
}
freeaddrinfo(aiRes);
return (vIP.size() > 0);
}
