Trait ServerConfigResolver 

pub trait ServerConfigResolver: InitialServerConfig {
    // Required method
    fn resolve(
        self: Arc<Self>,
        client_hello: ClientHelloMessage,
    ) -> Pin<Box<dyn Future<Output = Result<ServerConfigResolution, Box<dyn Error + Sync + Send>>> + Send>>;
}

Available on crate features quic and std only.

Server-side configuration resolved per connection from its ClientHello, for instance to issue a certificate for the requested server name.

A connection is accepted only once its whole ClientHello arrived and resolved: awaiting the Incoming does both. A ClientHello larger than 16 KiB is refused, and until the connection is accepted nothing is acknowledged, so the resolution time adds to the client’s first round-trip sample.

Required Methods

fn resolve( self: Arc<Self>, client_hello: ClientHelloMessage, ) -> Pin<Box<dyn Future<Output = Result<ServerConfigResolution, Box<dyn Error + Sync + Send>>> + Send>>

Look up the configuration a connection’s session starts from, given its ClientHello.

The lookup must stay cheap and hand back real work, such as issuing a certificate, as ServerConfigResolution::Pending: Incoming::accept_or_retry, which Endpoint::serve uses, drops that work unpolled to first validate an unproven client address with a Retry (RFC 9000 §8.1.2). A failure refuses the connection.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors