On Thu, Jun 14, 2018 at 7:12 AM, Yinjie Lin <exialin37(at)gmail(dot)com> wrote:
> Currently I am reading and testing code about Client Authentication, but I
> find that there are two progresses forked if I login using psql, while only
> one progress is forked if using pgAdmin.
>
If psql finds the server asks for a password, it closes the first
connection, displays a password prompt to the user, and then does another
connection attempt with the password the user entered. You can avoid the
first attempt with the -W flag; though there's usually no reason to do that
in practice.
.m