b63443718a
Presumably, the C type MsgType was meant to hold the protocol message type in the pre-version-3 era, but this was never fully developed even then, and the name is pretty confusing nowadays. It has only one vestigial use for cancel requests that we can get rid of. Since a cancel request is indicated by a special protocol version number, we can use the ProtocolVersion type, which MsgType was based on. Reviewed-by: Chao Li <li.evan.chao@gmail.com> Discussion: https://www.postgresql.org/message-id/flat/505e76cb-0ca2-4e22-ba0f-772b5dc3f230%40eisentraut.org
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/.