Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> writes:
> On Wed, Jan 22, 2014 at 6:54 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> I wonder if the port number wouldn't be a better choice. And that
>> could even be done without adding a parameter.
> We need this for register of event source which might be done before
> start of server.
So? Anything which can know the value of a GUC parameter can certainly
know the selected port number.
regards, tom lane