Struct ServerToClientAdapter 

pub struct ServerToClientAdapter { /* private fields */ }

Adapter that implements the ServerToClientRequests trait by delegating to BidirectionalRouter.

This adapter bridges the gap between the generic ServerToClientRequests trait (defined in turbomcp-protocol) and the concrete BidirectionalRouter implementation (in turbomcp-server).

Thread Safety

This adapter is Send + Sync because:

• BidirectionalRouter implements Clone and contains only Arc<dyn ServerRequestDispatcher>
• All interior state is immutable after construction

Performance

Zero-overhead abstraction:

• No intermediate serialization (types flow directly through)
• One Arc clone when creating the adapter (shared state)
• Direct delegation to underlying router (no indirection)
• Context propagation with zero allocation

Design Improvement (v2.0.0)

Previously named ServerCapabilitiesAdapter, this was renamed to ServerToClientAdapter for clarity and redesigned to eliminate double serialization.

Implementations

impl ServerToClientAdapter

pub fn new(bidirectional: BidirectionalRouter) -> Self

Create a new adapter wrapping a bidirectional router.

Example

use turbomcp_server::capabilities::ServerToClientAdapter;
use turbomcp_server::routing::BidirectionalRouter;

let router = BidirectionalRouter::new();
let adapter = ServerToClientAdapter::new(router);

pub fn supports_bidirectional(&self) -> bool

Check if bidirectional communication is supported.

Returns true if a dispatcher has been configured, false otherwise.

Trait Implementations

impl Clone for ServerToClientAdapter

fn clone(&self) -> ServerToClientAdapter

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ServerToClientAdapter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl ServerToClientRequests for ServerToClientAdapter

fn create_message( &self, request: CreateMessageRequest, ctx: RequestContext, ) -> BoxFuture<'_, Result<CreateMessageResult, McpError>>

Send a sampling/createMessage request to the client

fn elicit( &self, request: ElicitRequest, ctx: RequestContext, ) -> BoxFuture<'_, Result<ElicitResult, McpError>>

Send an elicitation request to the client for user input

fn list_roots( &self, ctx: RequestContext, ) -> BoxFuture<'_, Result<ListRootsResult, McpError>>

List client’s root capabilities