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mirror of https://github.com/postgres/postgres.git synced 2025-10-16 17:07:43 +03:00
Heikki Linnakangas e411a8d25a libpq: Be strict about cancel key lengths
The protocol documentation states that the maximum length of a cancel
key is 256 bytes. This starts checking for that limit in libpq.
Otherwise third party backend implementations will probably start
using more bytes anyway. We also start requiring that a protocol 3.0
connection does not send a longer cancel key, to make sure that
servers don't start breaking old 3.0-only clients by accident. Finally
this also restricts the minimum key length to 4 bytes (both in the
protocol spec and in the libpq implementation).

Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Reviewed-by: Jacob Champion <jchampion@postgresql.org>
Discussion: https://www.postgresql.org/message-id/df892f9f-5923-4046-9d6f-8c48d8980b50@iki.fi
Backpatch-through: 18
2025-08-22 14:39:29 +03:00
2025-08-04 14:06:58 +02:00
2025-08-14 12:09:34 -04:00
2025-08-15 10:32:35 +02:00
2022-12-04 15:23:00 -05:00
2024-11-05 13:56:02 +01:00
2020-02-10 20:47:50 +01:00
2024-02-28 15:17:23 +04:00
2025-08-18 07:42:39 +02:00

PostgreSQL Database Management System

This directory contains the source code distribution of the PostgreSQL database management system.

PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.

The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.

Description
Зеркало официального репозитория PostgreSQL GIT
Readme 1.1 GiB
Languages
C 85.1%
PLpgSQL 6%
Perl 4.6%
Yacc 1.2%
Meson 0.7%
Other 2.2%