Re: [PATCH v1] tools/hv: async name resolution in kvp_daemon

[Vitaly Kuznetsov]

Olaf Hering <olaf@xxxxxxxxx> writes:

> Am Thu, 07 Nov 2019 15:15:45 +0100
> schrieb Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>:
>
>> Looping forever with a permanent error is pretty unusual...
>
> That might be true, but how would you detect a permanent error?
> Just because the DNS server is gone for one hour does not mean it will be gone forever.

'man 3 getaddrinfo' lists the following:

       EAI_ADDRFAMILY
       EAI_AGAIN
       EAI_BADFLAGS
       EAI_FAIL
       EAI_FAMILY
       EAI_MEMORY
       EAI_NODATA
       EAI_NONAME
       EAI_SERVICE
       EAI_SOCKTYPE
       EAI_SYSTEM

I *think* what you're aiming at is EAI_AGAIN and EAI_FAIL, the rest
should probably terminate the resolver thread (e.g. AF_INET is
unsupported or something like that).

-- 
Vitaly