Re: Patch (2): Implement failover on libpq connect level.

> On 2015.10.14 at 13:41:51 +0300, Victor Wagner wrote:
>
>> Attached patch which implements client library failover and
>> loadbalancing as was described in the proposal
>> <20150818041850.GA5092@wagner.pp.ru>.
>>
> I'm sending imporoved verison of patch. As Olexander Shulgin noted,
> previous version of patch lacks support for service files.
>
> Now support for service files is implemented and multiple host
> statements in the service file are allowed.

A couple of minor nits:

When you call pg_is_in_recovery(), you should schema-qualify the 
function name, just in case some other version of that function exists 
in the search_path.

Also, pg_is_in_recovery() returns a boolean value - PQgetvalue() will 
not return "true" or "false", it will return "t" or "f".

And, you have a bit of garbage in the patch (the patch inserts 
UNIXSOCK_PATH(portstr, portnum, conn->pgunixsocket); in the header 
comment at the top of fe-connect.c).

                        -- Korry