BIO_lookup_ex: Always retry the lookup on failure with AI_NUMERICHOST set
Do not try to discern the error return value on
getaddrinfo() failure but when retrying set the AI_NUMERICHOST
to avoid DNS lookups.
Fixes:
@@ -709,20 +709,14 @@ int BIO_lookup_ex(const char *host, const char *service, int lookup_type,
case 0:
ret = 1; /* Success */
break;
-# if (defined(EAI_FAMILY) || defined(EAI_ADDRFAMILY)) && defined(AI_ADDRCONFIG)
-# ifdef EAI_FAMILY
- case EAI_FAMILY:
-# endif
-# ifdef EAI_ADDRFAMILY
- case EAI_ADDRFAMILY:
-# endif
+ default:
+# if defined(AI_ADDRCONFIG) && defined(AI_NUMERICHOST)
if (hints.ai_flags & AI_ADDRCONFIG) {
hints.ai_flags &= ~AI_ADDRCONFIG;
+ hints.ai_flags |= AI_NUMERICHOST;
goto retry;
}
# endif
- /* fall through */
- default:
BIOerr(BIO_F_BIO_LOOKUP_EX, ERR_R_SYS_LIB);
ERR_add_error_data(1, gai_strerror(gai_ret));
break;
