Struct SessionConfig 

pub struct SessionConfig {
    pub ttl: Duration,
    pub max_sessions: Option<usize>,
    pub cleanup_interval: Duration,
    pub strict_initialization: bool,
}

Configuration for session management

Fields

ttl: Duration

Time-to-live for inactive sessions

max_sessions: Option<usize>

Maximum number of sessions (None = unlimited)

cleanup_interval: Duration

How often to run the cleanup task

strict_initialization: bool

Whether to enforce that clients send notifications/initialized before making any non-initialize requests, per the MCP 2025-11-25 spec.

When true (the default), the transport returns a JSON-RPC InvalidRequest error (-32600) to any request received before notifications/initialized on a 2025-11-25 session-based connection.

Set to false to restore the previous lenient behavior, e.g. in dev/test scenarios where the full MCP handshake is inconvenient.

Implementations

impl SessionConfig

pub fn with_ttl(ttl: Duration) -> Self

Create a new session config with the given TTL

pub fn max_sessions(self, max: usize) -> Self

Set the maximum number of sessions

pub fn cleanup_interval(self, interval: Duration) -> Self

Set the cleanup interval

pub fn strict_initialization(self, enabled: bool) -> Self

Enable or disable strict initialization enforcement.

When enabled (default), the transport enforces that clients send notifications/initialized before any other requests on a 2025-11-25 session-based connection, per the MCP spec. Requests that arrive before this notification receive a JSON-RPC InvalidRequest error (-32600).

Disable this for dev/test scenarios where the full MCP handshake is inconvenient.

Trait Implementations

impl Clone for SessionConfig

fn clone(&self) -> SessionConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SessionConfig

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

Formats the value using the given formatter.

impl Default for SessionConfig

fn default() -> Self

Returns the “default value” for a type.