v0.1.0

Initial release of the rust-mssql-driver project.

Added

Core Features

• Type-state pattern for compile-time connection state enforcement
• Async/await support built on Tokio 1.48+
• TDS 7.4 and TDS 8.0 (strict encryption mode) protocol support
• TLS negotiation via rustls (pure Rust, no OpenSSL dependency)

Connection Management

• Connection configuration via connection strings
• Azure SQL redirect handling with automatic failover
• Configurable timeouts for connect, TLS, and query operations
• MARS (Multiple Active Result Sets) support flag

Query Execution

• Simple queries without parameters (SQL batch)
• Parameterized queries via sp_executesql RPC
• Streaming result sets with memory-efficient iteration
• QueryStream supporting both Iterator and async Stream patterns

Transaction Support

• BEGIN/COMMIT/ROLLBACK transaction management
• Savepoint creation and rollback
• Transaction isolation level configuration
• Type-state transitions for transaction safety

Type System

• Comprehensive SQL Server type mapping (INT, BIGINT, VARCHAR, NVARCHAR, etc.)
• Feature-gated support for chrono (date/time), uuid, decimal, and json types
• Zero-copy byte access via Arc pattern
• FromSql/ToSql traits for type conversion

Connection Pooling (mssql-pool)

• Semaphore-based connection management
• Configurable pool size and timeout settings
• Connection health checking and recycling
• Pool metrics collection

Derive Macros (mssql-derive)

• #[derive(FromRow)] for automatic row-to-struct mapping
• #[derive(ToParams)] for struct-to-parameter conversion
• #[derive(Tvp)] for table-valued parameter support
• Field renaming via #[mssql(rename = "...")] attribute

Protocol Layer (tds-protocol)

• Full TDS packet framing (header + payload)
• PreLogin and LOGIN7 packet construction
• Token stream parsing (COLMETADATA, ROW, NBCROW, DONE, ERROR, etc.)
• RPC request encoding for stored procedure calls

Build Infrastructure

• cargo-xtask automation (test, lint, fmt, coverage, fuzz, etc.)
• Mock TDS server for unit testing (mssql-testing)
• GitHub Actions CI workflow
• cargo-deny for dependency auditing

Security

• Savepoint name validation to prevent SQL injection
• TLS certificate validation with trust_server_certificate option
• Secure credential handling for SQL authentication

Crate Structure

• tds-protocol - Pure TDS protocol implementation (no_std compatible)
• mssql-tls - TLS negotiation layer
• mssql-codec - Async framing and message reassembly
• mssql-types - SQL ↔ Rust type mapping
• mssql-auth - Authentication strategies
• mssql-pool - Connection pooling
• mssql-client - High-level client API
• mssql-derive - Procedural macros
• mssql-testing - Test infrastructure

What's Changed

• fix(ci): handle platform-specific Kerberos dependency by @jkindrix in #11

New Contributors

• @jkindrix made their first contribution in #11

Full Changelog: https://github.com/praxiomlabs/rust-mssql-driver/commits/v0.1.0