[Lazarus] TLS connection to MySQL

Michael Van Canneyt michael at freepascal.org
Thu Apr 20 14:43:01 CEST 2023

On Thu, 20 Apr 2023, Koenraad Lelong via lazarus wrote:

> Hi,
> I'm updating an application that uses TSQLConnector to connect to MySQL 5.7.
> The MySQL server (5.7.42)  will be restricted to use only TSLv1.2 (or 
> higher).
> Is this possible with TSQLConnector ?
> TLSv1.1 works without configuring anything.
> With my test-server, it fails to connect when this is set to allow only 
> TLSv1.2.
> The application will run on Windows 11 if that matters.
> My libmysql.dll is version, in the same directory as the 
> application.

TSQLConnector will only pass on any connection parameters you set up to the
mysql layer.

If it fails for a particular TLS version, then I think it is more likely that 
the libmysql.dll is too old (or the openssl lib that it uses) and does not 
properly support TLSv1.2.


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