On Thu, Jun 8, 2017 at 1:36 AM, Heikki Linnakangas <hlinn...@iki.fi> wrote:
> While testing libpq and GSS the other day, I was surprised by the behavior > of the host and hostaddr libpq options, if you specify a list of hostnames. > > I did this this, and it took me quite a while to figure out what was going > on: > > $ psql "dbname=postgres hostaddr=::1 host=localhost,localhost >> user=krbtestuser" -c "SELECT 'hello'" >> psql: GSSAPI continuation error: Unspecified GSS failure. Minor code may >> provide more information >> GSSAPI continuation error: Server postgres/localhost,localhost@PG.EXAMPLE >> not found in Kerberos database >> > > That was a pilot error; I specified a list of hostnames, but only one > hostaddr. But I would've expected to get a more helpful error, pointing > that out. > > Some thoughts on this: > > 1. You cannot actually specify a list of hostaddrs. Trying to do so gives > error: > > psql: could not translate host name "::1,::1" to address: Name or service >> not known >> > > That error message is a bit inaccurate, in that it wasn't really a "host > name" that it tried to translate, but a raw address in string format. > That's even more confusing if you make the mistake that you specify > "hostaddr=localhost": > Your commit to fix this part, 76b11e8a43eca4612d, is giving me compiler warnings: fe-connect.c: In function 'connectDBStart': fe-connect.c:1625: warning: 'ret' may be used uninitialized in this function gcc version 4.4.7 20120313 (Red Hat 4.4.7-18) (GCC) Cheers, Jeff
