Struct LoopbackTransport 

pub struct LoopbackTransport { /* private fields */ }

Pure-Rust transport that round-trips calls through a local ToolRegistry. Useful for testing the MCP composition story without spawning an external process.

LoopbackTransport also doubles as the building block for McpToolServer-style exports in a future commit: any registry can be wrapped in a transport and then attached to a real MCP server crate.

Implementations

impl LoopbackTransport

pub fn new(endpoint: impl Into<String>, registry: ToolRegistry) -> Self

Trait Implementations

impl McpTransport for LoopbackTransport

fn endpoint(&self) -> &str

Stable identifier for this transport instance (typically the server URI or stdio command).

fn list_tools<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Vec<ToolSchema>, KernelError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Discover the tools exposed by the remote endpoint. Called at registration time; the returned schemas are authoritative.

fn call_tool<'life0, 'life1, 'async_trait>( &'life0 self, name: &'life1 str, args: Value, ) -> Pin<Box<dyn Future<Output = Result<Value, KernelError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Invoke a named tool. Implementations MUST round-trip the result JSON without modification so callers can rely on schema fidelity.