Where is the documentation for version 1.0 of PostgreSQL wire protocol

Question

The current documentation refers only to version 3 of the wire protocol.

However, there is the following note in the documentation:

For descriptions of the earlier protocol versions, see previous releases of the PostgreSQL documentation

However, I can't find anything about previous versions of the wire protocol.

score 4 · Accepted Answer · answered Apr 21 '21 at 18:57

4

It is all in the Git repository, here is a link to the source. You can actually read the SGML source pretty well.

answered Apr 21 '21 at 18:57

Laurenz Albe

score 1 · Answer 2 · answered Apr 22 '21 at 06:03

You can refer to the manual of older Postgres versions.

Postgres 7.3 is the latest version using frontend/backend protocol version 2.0:

This document describes version 2.0 of the protocol, implemented in Postgres 6.4 and later.

For version 1.0 you have to dig up the manual for the ancient version Postgres 6.3:

This document describes the initial version-numbered protocol, designated v1.0.

2 Answers2