Re: LibPQ doesn't say host=* translates to localhost

On Thu, 27 Jun 2024 at 21:57, David G. Johnston
<david(dot)g(dot)johnston(at)gmail(dot)com> wrote:
> The documentation [0] doesn't say this should work and general networking knowledge leads me to believe it wouldn't [1].
>
> PGHOST='*' psql postgres
> psql (17beta1)
> SSL connection (protocol: TLSv1.3, cipher: TLS_AES_256_GCM_SHA384, compression: off, ALPN: postgresql)
> Type "help" for help.
>
> postgres=# \conninfo
> You are connected to database "postgres" as user "davidj" on host "*" (address "127.0.0.1") at port "5432".
> SSL connection (protocol: TLSv1.3, cipher: TLS_AES_256_GCM_SHA384, compression: off, ALPN: postgresql)
>
> David J.
>
> [0] /docs/current/libpq-connect.html#LIBPQ-PARAMKEYWORDS
>
> [1]
> ping *
> ping: src: Temporary failure in name resolution

Bad quoting, PGHOST=¡*', single quoted, but ping *, unquouted, with an
error message which hints at <<echo ping *>> giving back <<ping src
....>>

Bug may be real, but ping '*' could give some better data for debugging.

Francisco Olarte.