X-Original-To: pgsql-interfaces-postgresql.org@localhost.postgresql.org Received: from localhost (unknown [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id D89C35290B for ; Mon, 13 Jun 2005 11:08:41 -0300 (ADT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 28954-04 for ; Mon, 13 Jun 2005 14:08:38 +0000 (GMT) Received: from Sybilla.traxelektronik.pl (vr13.internetdsl.tpnet.pl [80.55.173.13]) by svr1.postgresql.org (Postfix) with ESMTP id 59CF752906 for ; Mon, 13 Jun 2005 11:08:37 -0300 (ADT) Received: from localhost (localhost [127.0.0.1]) by Sybilla.traxelektronik.pl (Postfix) with ESMTP id 86E0C1FBBC7; Mon, 13 Jun 2005 16:08:40 +0200 (CEST) Received: from Sybilla.traxelektronik.pl ([127.0.0.1]) by localhost (sybilla.traxelektronik.pl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 31326-10; Mon, 13 Jun 2005 16:08:35 +0200 (CEST) Received: from [192.168.0.53] (charon [80.55.173.14]) by Sybilla.traxelektronik.pl (Postfix) with ESMTP id A1FA21FB8AA; Mon, 13 Jun 2005 16:08:34 +0200 (CEST) Message-ID: <42AD9354.7000008@sybilla.traxelektronik.pl> Date: Mon, 13 Jun 2005 16:08:20 +0200 From: Piotr Sulecki User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050331) X-Accept-Language: pl, en-us, en MIME-Version: 1.0 To: Volkan YAZICI Cc: pgsql-interfaces@postgresql.org Subject: Re: Will libpq 8 PQ*cancel functions work with 7.4 servers? References: <42AD47D7.8090006@sybilla.traxelektronik.pl> <7104a737050613065754b7f3f4@mail.gmail.com> In-Reply-To: <7104a737050613065754b7f3f4@mail.gmail.com> X-Enigmail-Version: 0.91.0.0 OpenPGP: id=DB9D2140 Content-Type: text/plain; charset=ISO-8859-2 Content-Transfer-Encoding: quoted-printable X-Virus-Scanned: by amavisd-new-20030616-p10 (Debian) at traxelektronik.pl X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.05 tagged_above=0 required=5 tests=AWL, FORGED_RCVD_HELO X-Spam-Level: X-Archive-Number: 200506/37 X-Sequence-Number: 5605 Ave! Volkan YAZICI napisa=B3(a): >>My question is, will the new interface (PQgetCancel / PQcancel / >>PQfreeCancel) work with the version 7.4 server? >=20 > AFAIC, no. That would mean it was a protocol change as well as an API change. If the protocol was unchanged, the new API would generate the same link-level events, only in a different way. And I seem to recall reading somewhere that version 8.0 uses the same link-level protocol for client-to-backend communication as 7.4 did. What you say contradicts it. Maybe I'm wrong. My memory is not as good as it used to be... :-) Regards, Piotr Sulecki.