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

[Alviro Iskandar Setiawan <alviro.iskandar@gnuweeb.org>]

On Wed, Aug 6, 2025 at 6:09 PM Alviro Iskandar Setiawan wrote:
> On Wed, Aug 6, 2025 at 10:57 AM Ahmad Gani wrote:
> > Introducing glibc's getaddrinfo replacement, the DNS protocol
> > implementation is limited to standard query (OPCODE_QUERY) as for now,
> > but may extended later as necessary.
>
> Thinking about this further, I think this design is wrong. The DNS
> library is expected to only handle bytes processing, leaving the
> networking stack to the caller.
>
> Think, how is it going to be integrated with io_uring?
>
> We should let the caller perform the recv and send. This library
> doesn't need to care about the networking stack at all. Make it the
> caller's responsibility to feed the library with bytes from the
> network.

Please take a look at src/gwproxy/socks5.c

That's a perfect example of socks5 bytes processing without
networking. Purely bytes parsing.

That way you can use io_uring, epoll, or whatever shiny features, even
statically allocated fake bytes work.

-- Viro