Struct Session 

pub struct Session { /* private fields */ }

An MCP session between client and server.

Tracks the state of an initialized MCP connection.

Implementations

impl Session

pub fn new( server_info: ServerInfo, server_capabilities: ServerCapabilities, ) -> Session

Creates a new uninitialized session.

pub fn state(&self) -> &SessionState

Returns a reference to the session state.

Session state persists across requests within this session and can be used to store handler-specific data.

pub fn is_initialized(&self) -> bool

Returns whether the session has been initialized.

pub fn initialize( &mut self, client_info: ClientInfo, client_capabilities: ClientCapabilities, protocol_version: String, )

Initializes the session with client info.

pub fn client_info(&self) -> Option<&ClientInfo>

Returns the client info if initialized.

pub fn client_capabilities(&self) -> Option<&ClientCapabilities>

Returns the client capabilities if initialized.

pub fn server_info(&self) -> &ServerInfo

Returns the server info.

pub fn server_capabilities(&self) -> &ServerCapabilities

Returns the server capabilities.

pub fn protocol_version(&self) -> Option<&str>

Returns the negotiated protocol version.

pub fn subscribe_resource(&mut self, uri: String)

Subscribes to a resource URI for this session.

pub fn unsubscribe_resource(&mut self, uri: &str)

Unsubscribes from a resource URI for this session.

pub fn is_resource_subscribed(&self, uri: &str) -> bool

Returns true if this session is subscribed to the given resource URI.

pub fn set_log_level(&mut self, level: LogLevel)

Sets the session log level for log notifications.

pub fn log_level(&self) -> Option<LogLevel>

Returns the current session log level for log notifications.

pub fn supports_sampling(&self) -> bool

Returns whether the client supports sampling (LLM completions).

pub fn supports_elicitation(&self) -> bool

Returns whether the client supports elicitation (user input requests).

pub fn supports_roots(&self) -> bool

Returns whether the client supports roots listing.

pub fn notify_resource_updated( &self, uri: &str, sender: &Arc<dyn Fn(JsonRpcRequest) + Send + Sync>, ) -> bool

Sends a resource updated notification if the session is subscribed.

Returns true if a notification was sent.

Trait Implementations

impl Debug for Session

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

Formats the value using the given formatter.