void DNS::aierror(int code, const std::string& arg)
{
#if defined(POCO_HAVE_IPv6)
switch (code)
{
case EAI_AGAIN:
throw DNSException("Temporary DNS error while resolving", arg);
case EAI_FAIL:
throw DNSException("Non recoverable DNS error while resolving", arg);
#if !defined(_WIN32) // EAI_NODATA and EAI_NONAME have the same value
case EAI_NODATA:
throw NoAddressFoundException(arg);
#endif
case EAI_NONAME:
throw HostNotFoundException(arg);
#if defined(EAI_SYSTEM)
case EAI_SYSTEM:
error(lastError(), arg);
break;
#endif
#if defined(_WIN32)
case WSANO_DATA: // may happen on XP
throw HostNotFoundException(arg);
#endif
default:
throw DNSException("EAI", NumberFormatter::format(code));
}
#endif // POCO_HAVE_IPv6
}
IPAddress DNS::resolveOne(const std::string& address)
{
const HostEntry& entry = resolve(address);
if (!entry.addresses().empty())
return entry.addresses()[0];
else
throw NoAddressFoundException(address);
}
void DNS::error(int code, const std::string& arg)
{
switch (code)
{
case POCO_ESYSNOTREADY:
throw NetException("Net subsystem not ready");
case POCO_ENOTINIT:
throw NetException("Net subsystem not initialized");
case POCO_HOST_NOT_FOUND:
throw HostNotFoundException(arg);
case POCO_TRY_AGAIN:
throw DNSException("Temporary DNS error while resolving", arg);
case POCO_NO_RECOVERY:
throw DNSException("Non recoverable DNS error while resolving", arg);
case POCO_NO_DATA:
throw NoAddressFoundException(arg);
default:
throw IOException(NumberFormatter::format(code));
}
}
