Module tls 

TLS/SSL support for MySQL connections.

This module implements the TLS handshake for MySQL connections using rustls.

MySQL TLS Handshake Flow

1. Server sends initial handshake with CLIENT_SSL capability
2. If SSL is requested, client sends short SSL request packet:
   • 4 bytes: capability flags (with CLIENT_SSL)
   • 4 bytes: max packet size
   • 1 byte: character set
   • 23 bytes: reserved (zeros)
3. Client performs TLS handshake
4. Client sends full handshake response over TLS
5. Server sends auth result over TLS

Feature Flag

TLS support requires the tls feature to be enabled:

[dependencies]
sqlmodel-mysql = { version = "0.1", features = ["tls"] }

Example

use sqlmodel_mysql::{MySqlConfig, SslMode, TlsConfig};

let config = MySqlConfig::new()
    .host("db.example.com")
    .ssl_mode(SslMode::VerifyCa)
    .tls_config(TlsConfig::new()
        .ca_cert("/etc/ssl/certs/ca.pem"));

// Connection will use TLS after initial handshake
let conn = MySqlConnection::connect(config)?;

Structs

TlsStream

TLS connection wrapper (placeholder when tls feature is disabled).

Functions

build_ssl_request_packet

Build an SSL request packet.

server_supports_ssl

Check if the server supports SSL/TLS.

validate_ssl_mode

Validate SSL mode against server capabilities.

validate_tls_config

Validate TLS configuration for the given SSL mode.