Struct McpAppState 

pub struct McpAppState {
    pub session_store: Arc<dyn SessionStore>,
    pub id_generator: Arc<dyn IdGenerator<SessionId>>,
    pub stream_id_gen: Arc<FastIdGenerator>,
    pub server_details: Arc<InitializeResult>,
    pub handler: Arc<dyn McpServerHandler>,
    pub ping_interval: Duration,
    pub transport_options: Arc<TransportOptions>,
    pub enable_json_response: bool,
    pub allowed_hosts: Option<Vec<String>>,
    pub allowed_origins: Option<Vec<String>>,
    pub dns_rebinding_protection: bool,
    pub event_store: Option<Arc<dyn EventStore>>,
}

Application state struct for the Hyper ser

Holds shared, thread-safe references to session storage, ID generator, server details, handler, ping interval, and transport options.

Fields

session_store: Arc<dyn SessionStore>

id_generator: Arc<dyn IdGenerator<SessionId>>

stream_id_gen: Arc<FastIdGenerator>

server_details: Arc<InitializeResult>

handler: Arc<dyn McpServerHandler>

ping_interval: Duration

transport_options: Arc<TransportOptions>

enable_json_response: bool

allowed_hosts: Option<Vec<String>>

List of allowed host header values for DNS rebinding protection. If not specified, host validation is disabled.

allowed_origins: Option<Vec<String>>

List of allowed origin header values for DNS rebinding protection. If not specified, origin validation is disabled.

dns_rebinding_protection: bool

Enable DNS rebinding protection (requires allowedHosts and/or allowedOrigins to be configured). Default is false for backwards compatibility.

event_store: Option<Arc<dyn EventStore>>

Event store for resumability support If provided, resumability will be enabled, allowing clients to reconnect and resume messages

Implementations

impl McpAppState

pub fn needs_dns_protection(&self) -> bool

Trait Implementations

impl Clone for McpAppState

fn clone(&self) -> McpAppState

Returns a duplicate of the value.

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

Performs copy-assignment from source.