Epistates/TurboMCP

[2.3.4] - 2025-12-13

Fixed

WebSocket Transport (turbomcp-transport)

• WebSocket client requests no longer timeout - Fixed critical bug where standard request-response
  patterns were never routed to correlation handlers in spawn_message_reader_task(). Responses now
  correctly route to the correlations DashMap by matching JSON-RPC id to request_id.

Feature Propagation (turbomcp)

• mcp-tasks feature now propagates to turbomcp-server - Previously only propagated to
  turbomcp-protocol, causing compilation errors when mcp-tasks was enabled.

Error Handling (turbomcp-protocol)

• std::error::Error::source() now returns the actual source error - Was previously always
  returning None despite the Error struct having a source field. Enables proper error chain
  introspection for debugging and logging frameworks.

Code Quality

• Removed unused error import in turbomcp-transport/src/axum/middleware/jwks.rs
• Replaced eprintln! debug statements with tracing::error in turbomcp-dpop/src/proof.rs

Added

Compile-Time Safety (turbomcp-macros)

• dbg! macro now detected by stdio safety validation - Prevents accidental stdout writes in
  servers using stdio transport. Error message updated to include dbg! in examples.

Changed

Documentation

• Protocol version updated from 2025-06-18 to 2025-11-25 - README now correctly reflects the
  actual PROTOCOL_VERSION constant used in the codebase.
• Added comprehensive Requirements section - Documents Rust 1.89.0+ requirement with rustc --version
  hint for verification.
• Added Installation section - Includes Cargo.toml and cargo add examples.
• Added Feature Presets documentation - Documents default, full, full-stack, and network
  presets with use cases.
• Added Individual Features table - Documents all transport, security, and performance features.
• Fixed 10 failing doctests - Updated examples to include required fields (task, task_id,
  last_updated_at, limit) and correct types (HashMap<String, Value> for arguments).
• Updated version references from 2.1 to 2.3 in Quick Start examples.

Full Changelog: https://github.com/Epistates/turbomcp/compare/v2.3.3...v2.3.4