docs(mysql): document rustls config and SNI override

Author: mingley

sqlx-mysql/src/options/mod.rs

@@ -355,6 +355,28 @@ impl MySqlConnectOptions {
     /// Uses a prebuilt rustls config for TLS when the `rustls` feature is enabled.
     ///
     /// This overrides any CA/cert/key set via the other SSL helpers.
+    ///
+    /// # Example
+    ///
+    /// ```rust,no_run
+    /// # #[cfg(feature = "rustls")]
+    /// # {
+    /// use sqlx_mysql::MySqlConnectOptions;
+    ///
+    /// let Some(provider) = rustls::crypto::CryptoProvider::get_default().cloned() else {
+    ///     return;
+    /// };
+    /// let config = rustls::ClientConfig::builder_with_provider(provider)
+    ///     .with_safe_default_protocol_versions()
+    ///     .unwrap()
+    ///     .with_root_certificates(rustls::RootCertStore::empty())
+    ///     .with_no_client_auth();
+    ///
+    /// let _options = MySqlConnectOptions::new()
+    ///     .ssl_rustls_config(config)
+    ///     .tls_server_name("db.example.com");
+    /// # }
+    /// ```
     #[cfg(feature = "rustls")]
     pub fn ssl_rustls_config(mut self, config: rustls::ClientConfig) -> Self {
         self.ssl_config = SslConfig::Rustls(Box::new(config));
@@ -364,6 +386,15 @@ impl MySqlConnectOptions {
     /// Overrides the TLS server name used for SNI and hostname verification.
     ///
     /// By default, the host from `MySqlConnectOptions` is used.
+    ///
+    /// # Example
+    ///
+    /// ```rust
+    /// # use sqlx_mysql::MySqlConnectOptions;
+    /// let _options = MySqlConnectOptions::new()
+    ///     .host("haproxy.example.com")
+    ///     .tls_server_name("mysql.example.com");
+    /// ```
     pub fn tls_server_name(mut self, server_name: &str) -> Self {
         self.tls_server_name = Some(server_name.to_owned());
         self