Re: Implementing Frontend/Backend Protocol TCP/IP

On 27/10/2009, at 0:17, John R Pierce wrote:

> Alvaro Herrera wrote:
>>> I'm trying to implement the front-end protocol with TCP from
>>> REALbasic to PostgreSQL.
>>>
>>
>> That sounds the most difficult way to do it.  Can't you just embed
>> libpq?
>>
>
> yah, seriously.   the binary protocol is not considered stable, it
> can change in subtle ways in each version.  libpq handles the
> current version and all previous versions, and exposes all methods.

Well, if I specify that I'm using the protocol 300 it should work, and
be stable, not ?

REALbasic has plugin for PostgreSQL, but they are synchronous  and
freeze the GUI when interacting with PG. This is not a problem
noramlly, as the SELECTS/UPDATES/... are fast enopugh, but sometimes
we need to fetch 1000, 5000 or more rows and the application stops to
respond, I can't have a progressbar because all is freeze, until all
data has come from PG, so we need a better way.

I found someone who created what I'm trying to do, with the same
language, with the same protocol, with the same version, but it's a
comercial app, and we need the source code. The communication is made
through TCP/IP, really fast, and always asynchronous, our application
is always responsive.

I don't know almost nothing about C and implementing it would be too
much work, and maybe we would have the same problem.

Anyway, I'll try to go further with the binary implementation, at
least, as a learn-approach ...

:-)

thanks,


regards,


r.