turbomcp-unix

Unix domain socket transport implementation for the TurboMCP SDK.

Overview

This crate provides Unix domain socket transport with:

• Server Mode: Accept multiple client connections with automatic handling
• Client Mode: Connect to a Unix socket server
• Bidirectional Communication: Full-duplex message exchange
• Backpressure Handling: Bounded channels prevent memory exhaustion
• Graceful Shutdown: Clean task termination and socket cleanup
• Message Framing: Uses LinesCodec for reliable newline-delimited JSON
• Security: Configurable file permissions (default 0o600)

Installation

[dependencies]
turbomcp-unix = "3.1"

Or use through the main transport crate:

[dependencies]
turbomcp-transport = { version = "3.1.4", features = ["unix"] }

Quick Start

Server Mode

use turbomcp_unix::{UnixTransport, UnixTransportBuilder};
use turbomcp_transport_traits::Transport;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let transport = UnixTransportBuilder::new_server()
        .socket_path("/tmp/my-mcp.sock")
        .permissions(0o600)
        .build();

    transport.connect().await?; // Starts listening
    Ok(())
}

Client Mode

use turbomcp_unix::{UnixTransport, UnixTransportBuilder};
use turbomcp_transport_traits::Transport;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let transport = UnixTransportBuilder::new_client()
        .socket_path("/tmp/my-mcp.sock")
        .build();

    transport.connect().await?;
    Ok(())
}

v3.0 Modular Architecture

This crate is part of TurboMCP v3.0's modular transport architecture:

• Foundation: turbomcp-transport-traits provides core abstractions
• Individual Transports: Each transport (stdio, http, websocket, tcp, unix) is a separate crate
• Backward Compatibility: turbomcp-transport re-exports all transports

License

MIT