Struct LegacyHook 

pub struct LegacyHook(pub Arc<dyn LegacyProxyHook>);

Adapts a LegacyProxyHook to ProxyHook, preserving 0.3.x semantics exactly.

Three behaviours are preserved deliberately:

• Self::interest yields DATAGRAMS, plus CONTROL only when the wrapped hook’s wants_control_mutation() is true. DATAGRAMS is unconditional because the 0.3.x datagram hook was the datagram hook, and dropping the flag would stop datagram rewriting for anyone who had it.
• A control Some(bytes) returned by a hook whose wants_control_mutation() is false is discarded, as it was in 0.3.x. Mapping it to Action::Replace unconditionally would make an observe-only hook that returns Some(..) out of sloppiness start rewriting production traffic — source-compatible, compiling, and semantically inverted.
• on_datagram returns Action::Pass when the header did not decode, because 0.3.x never called the hook in that case.

One behaviour changes, and it is a change rather than a fix: in 0.3.x on_datagram was unreachable unless an observer was attached. It now fires regardless.

Tuple Fields

0: Arc<dyn LegacyProxyHook>

Trait Implementations

impl ProxyHook for LegacyHook

fn interest(&self) -> Interest

What this hook wants the proxy to parse.

fn on_control_message( &self, cx: &FrameCtx<'_>, msg: &AnyControlMessage, raw: &[u8], ) -> Action

Called before forwarding a control message.

fn on_datagram( &self, cx: &FrameCtx<'_>, header: Option<&AnyDatagramHeader>, raw: &[u8], ) -> Action

Called before forwarding a datagram.

fn on_stream_open(&self, _cx: &StreamCtx<'_>) -> StreamAction

Called after a unidirectional stream is accepted and before the peer stream is opened. Stream identity only — see StreamCtx.

fn on_stream_header( &self, _cx: &StreamCtx<'_>, _header: &DataStreamHeaderKind, ) -> StreamAction

Called once the data stream’s header has been framed and before its bytes are forwarded.

fn on_object(&self, _cx: &ObjectCtx<'_>, _raw: &[u8]) -> Action

Called before forwarding one complete object.

fn on_stream_end(&self, _cx: &StreamCtx<'_>, _end: StreamEnd) -> Action

Called when a forwarded stream ends, for any reason.