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From: "davecramer (@davecramer)" <noreply+davecramer@github.com>
To: "pgjdbc/pgjdbc" <noreply+pgjdbc-pgjdbc@github.com>
Date: Fri, 11 Apr 2025 19:40:44 +0000
Subject: [pgjdbc/pgjdbc] PR #3592:  Handle protocol 3.2 and wider cancel keys. 
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We also now have to handle the protocolNegotiationMessage

As of https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=285613c60a7aff5daaf281c67002483b0d26e715 the protocol version has been bumped to 3.2. This will take effect in version 18.

The only protocol change is wider cancel keys. Previously cancel keys were 4 bytes wide now they can have a maximum of 256 bytes but currently the server sends 32 byte wide cancel keys.

https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=a460251f0a1ac987f0225203ff9593704da0b1a9