Re: C++ interfaces
От | Randy Jonasz |
---|---|
Тема | Re: C++ interfaces |
Дата | |
Msg-id | Pine.BSF.4.21.0010101821470.65416-100000@nietzsche.jaded.net обсуждение исходный текст |
Ответ на | Re: C++ interfaces (Tom Lane <tgl@sss.pgh.pa.us>) |
Список | pgsql-interfaces |
Thanks for the info! I've managed to look at all of the packets the back-end and front end send to each other and have a fairly good idea of what is expected. Now for the hard part ... On Sat, 7 Oct 2000, Tom Lane wrote: > Randy Jonasz <rjonasz@click2net.com> writes: > > I'm currently looking at the packet structures that the back-end and > > clients must use. I've found that many packets are terminated with > > 0x5A. The docs don't mention this so I was wondering if anyone could > > suggest why. > > I suspect you are confusing the logically-separate ReadyForQuery > message (which is a single byte 'Z') with the preceding data message. > See http://www.postgresql.org/docs/postgres/protocol.htm, particularly > the description of the basic Query cycle: > > : A Query cycle is initiated by the frontend sending a Query message to > : the backend. The backend then sends one or more response messages > : depending on the contents of the query command string, and finally a > : ReadyForQuery response message. ReadyForQuery informs the frontend that > : it may safely send a new query or function call. > > regards, tom lane > > Randy Jonasz Software Engineer Click2net Inc. Web: http://www.click2net.com Phone: (905) 271-3550 "You cannot possibly pay a philosopher what he's worth, but try your best" -- Aristotle
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