Re: Enhance pg_stat_wal_receiver view to display connected host

On Fri, Jan 12, 2018 at 11:37:22AM +0900, Michael Paquier wrote:
> I have redone my set of previous tests and can confirm that PQhost is
> behaving as I would expect it should, and those results are the same as
> yours.

    if (conn->connhost != NULL &&
-       conn->connhost[conn->whichhost].type != CHT_HOST_ADDRESS)
+           conn->connhost[conn->whichhost].host != NULL &&
+           conn->connhost[conn->whichhost].host[0] != '\0')
        return conn->connhost[conn->whichhost].host;
-   else if (conn->pghost != NULL && conn->pghost[0] != '\0')
-       return conn->pghost;

Upon further review, the second bit of the patch is making me itching. I
think that you should not remove the second check which returns
conn->pghost if a value is found in it.