Struct SseTransport 

pub struct SseTransport<R>
where
    R: Clone + Send + Sync + DeserializeOwned + 'static,
{ /* private fields */ }

Implementations

impl<R> SseTransport<R>

where R: Clone + Send + Sync + DeserializeOwned + 'static,

Server-Sent Events (SSE) transport implementation

pub fn new( read_rx: DuplexStream, write_tx: DuplexStream, receiver_tx: DuplexStream, options: Arc<TransportOptions>, ) -> Result<SseTransport<R>, TransportError>

Creates a new SseTransport instance

Initializes the transport with provided read and write duplex streams and options.

Arguments

• read_rx - Duplex stream for receiving messages
• write_tx - Duplex stream for sending messages
• receiver_tx - Duplex stream for receiving string payload
• options - Shared transport configuration options

Returns

• TransportResult<Self> - The initialized transport or an error

pub fn message_endpoint(endpoint: &str, session_id: &String) -> String

Trait Implementations

impl McpDispatch<ClientMessages, ServerMessages, ClientMessage, ServerMessage> for SseTransport<ClientMessage>

fn send_message<'life0, 'async_trait>( &'life0 self, message: ServerMessages, request_timeout: Option<Duration>, ) -> Pin<Box<dyn Future<Output = Result<Option<ClientMessages>, TransportError>> + Send + 'async_trait>>

where 'life0: 'async_trait, SseTransport<ClientMessage>: 'async_trait,

Sends a raw message represented by type S and optionally includes a request_id. The request_id is used when sending a message in response to an MCP request. It should match the request_id of the original request.

fn send<'life0, 'async_trait>( &'life0 self, message: ServerMessage, request_timeout: Option<Duration>, ) -> Pin<Box<dyn Future<Output = Result<Option<ClientMessage>, TransportError>> + Send + 'async_trait>>

where 'life0: 'async_trait, SseTransport<ClientMessage>: 'async_trait,

fn send_batch<'life0, 'async_trait>( &'life0 self, message: Vec<ServerMessage>, request_timeout: Option<Duration>, ) -> Pin<Box<dyn Future<Output = Result<Option<Vec<ClientMessage>>, TransportError>> + Send + 'async_trait>>

where 'life0: 'async_trait, SseTransport<ClientMessage>: 'async_trait,

fn write_str<'life0, 'life1, 'async_trait>( &'life0 self, payload: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<(), TransportError>> + Send + 'async_trait>>

where 'life0: 'async_trait, 'life1: 'async_trait, SseTransport<ClientMessage>: 'async_trait,

Writes a string payload to the underlying asynchronous writable stream, appending a newline character and flushing the stream afterward.

impl Transport<ClientMessages, MessageFromServer, ClientMessage, ServerMessages, ServerMessage> for SseTransport<ClientMessage>

fn start<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<ReceiverStream<ClientMessages>, TransportError>> + Send + 'async_trait>>

where 'life0: 'async_trait, MessageDispatcher<ClientMessage>: McpDispatch<ClientMessages, ServerMessages, ClientMessage, ServerMessage>, SseTransport<ClientMessage>: 'async_trait,

Starts the transport, initializing streams and message dispatcher

Sets up the MCP stream and dispatcher using the provided duplex streams.

Returns

• TransportResult<(Pin<Box<dyn Stream<Item = R> + Send>>, MessageDispatcher<R>, IoStream)>
  • The message stream, dispatcher, and error stream

Errors

• Returns TransportError if streams are already taken or not initialized

fn is_shut_down<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = bool> + Send + 'async_trait>>

where 'life0: 'async_trait, SseTransport<ClientMessage>: 'async_trait,

Checks if the transport has been shut down

Returns

• bool - True if the transport is shut down, false otherwise

fn shut_down<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<(), TransportError>> + Send + 'async_trait>>

where 'life0: 'async_trait, SseTransport<ClientMessage>: 'async_trait,

Shuts down the transport, terminating tasks and signaling closure

Cancels any running tasks and clears the cancellation source.

Returns

• TransportResult<()> - Ok if shutdown is successful, Err if cancellation fails

fn message_sender( &self, ) -> Arc<RwLock<Option<MessageDispatcher<ClientMessage>>>>

fn error_stream(&self) -> &RwLock<Option<IoStream>>

fn consume_string_payload<'life0, 'life1, 'async_trait>( &'life0 self, payload: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<(), TransportError>> + Send + 'async_trait>>

where 'life0: 'async_trait, 'life1: 'async_trait, SseTransport<ClientMessage>: 'async_trait,

fn keep_alive<'life0, 'async_trait>( &'life0 self, interval: Duration, disconnect_tx: Sender<()>, ) -> Pin<Box<dyn Future<Output = Result<JoinHandle<()>, TransportError>> + Send + 'async_trait>>

where 'life0: 'async_trait, SseTransport<ClientMessage>: 'async_trait,

fn pending_request_tx<'life0, 'life1, 'async_trait>( &'life0 self, request_id: &'life1 RequestId, ) -> Pin<Box<dyn Future<Output = Option<Sender<ClientMessage>>> + Send + 'async_trait>>

where 'life0: 'async_trait, 'life1: 'async_trait, SseTransport<ClientMessage>: 'async_trait,

impl TransportDispatcher<ClientMessages, MessageFromServer, ClientMessage, ServerMessages, ServerMessage> for SseTransport<ClientMessage>