Re: [PATCH gwproxy v4 4/6] dnslookup: Initial work for implementation of C-ares-like getaddrinfo function

[Ahmad Gani <reyuki@gnuweeb.org>]

Sorry for the late reply! I've been caught up reading manga [1] and kind of
slacking on the development of this feature. But I'm feeling motivated
again—Anyway, let's pick up where we left off.

So, the goal is to have an abstraction for name resolution without relying
on glibc's getaddrinfo, allowing asynchronous operation without separate,
dedicated DNS thread(s), right?

On Thu, 7 Aug 2025 04:33:46 +0700 Ammar Faizi wrote:
> Let's make a simple rule. No syscalls in the DNS library. An exception
> maybe reading /etc/hosts, but you can skip that part for now.
>
> The DNS lib should at least accept:
> - Domain name.
> - Service name (port).
> - Address families to be resolved (AF_INET or AF_INET6).
> - Received bytes from the network.
> - Pointer to recv and send buffer (including their lengths).
>
> The DNS lib should at least generate:
> - Resolved addresses in 'struct gwp_sockaddr' form.
> - Bytes to be sent to the network.

I've created `gwdns_build_query` and `gwdns_parse_query`, which should
meet those criteria, please take a look at new email threads [2].

[1]:
- https://nostarch.com/microprocessors

[2]:
- https://lore.gnuweeb.org/gwml/20250814044658.252579-1-reyuki@gnuweeb.org/

--
Ahmad Gani