Trait CapsuleObserver 

pub trait CapsuleObserver:
    Send
    + Sync
    + 'static {
    // Required methods
    fn is_enabled(&self) -> bool;
    fn created(&self, header: CapsuleHeader);
    fn parsed(&self, header: CapsuleHeader);
}

Available on crate features http and std only.

A synchronous metadata observer. Methods must finish promptly without I/O, blocking or reentering the session. Header metadata contains no value bytes. Retained data and callback failures belong to the observer; observations must not control protocol behavior.

Required Methods

fn is_enabled(&self) -> bool

Cheap dynamic gate, checked at the completion boundary.

fn created(&self, header: CapsuleHeader)

A complete declared value was accepted by the sender, not necessarily delivered.

fn parsed(&self, header: CapsuleHeader)

The decoder consumed the complete declared value, including skipped/forwarded values.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors