Support for client TLS auth to Mysql instances

[srinivasmohan]

Hi,
Thanks for building/maintaining sqlx! I have a use-case for client connections using TLS auth in my infra and I cant find an open feature request. I have a working change-set to implement this for rustls. Mind if I were to send a PR? Essentially, adds MySqlConnectOptions.ssl_client_cert() to allow rustls mode configure_tls_connector to load up the client cert during connection time.

Is your feature request related to a problem? Please describe.
Lack of SSL client auth for mysql clients

Describe the solution you'd like
Option to pass a combined PEM file via MySqlConnectOptions.ssl_client_cert() that gets used by the TLS Connector.

Describe alternatives you've considered
I did consider mysql_async crate but I liked the semantics of sqlx better.

Additional context
NA

[srinivasmohan]

I should have looked at pending PRs earlier - Looks like #1850 does this too. Any progress on it?

[srinivasmohan]

I also have a minimal working changeset https://github.com/srinivasmohan/sqlx/tree/mysql_ssl_client_auth which implements this for mysql/rustls alone (tests pending). (I dont have a need for native-tls feature but happy to implement that if needed).

[ThibsG]

Hi @srinivasmohan , PR #1850 just got merged into 0.7-dev. I didn't have time to look into combined PEM files and how to integrate them.

I guess this issue can be reworded into something more related to combined PEM files then.