On Aug 10, 2005, at 6:38 AM, Tomasz Myrta wrote:
Fischer Ulrich napisal 2005-06-22 17:37:
Hello
I'm new in this List.
I would like to connect to a Postgres-Server by a LabView-Client.
The problem is, there is NO odbc-driver for LV on Linux and no LV-
interface to postgreSQL.
So I decided to make my own simple LabView driver. Are there some
docs, which describes the basic communication over a tcp
connection between the postgres server and a client? I'm
interested in 'message architecture' (header, data for login, sql-
querys and so on...) and all this stuff.
May I ask you, why do you want to make your own direct TCP
connection to PostgreSQL? I think, in your case it would be much
easier to create some wrapper for libpq or some other frontend
library. It needs less work and you don't have to be afraid about
tracking internal protocol changes.
I tried some backward engineering by sniffing the tcp connection,
but it is rather anoying. It looks like the messages have some
binary headers and they are a problem....
Maybe source code of common used PostgresSQL frontends like libpq
will help you?
PostgreSQL has a very nice and well documented protocol. See
http://www.postgresql.org/docs/8.0/static/protocol.html
John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL
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