Struct RelaySender 

pub struct RelaySender { /* private fields */ }

A hold-open relay SENDER for STREAMING dispatch (bd-772cb2): connects once and writes a Cast frame per command instead of reconnecting per command (the sender side needs no register handshake — the relay routes casts to the registered devices). Lazy-connects on the first cast; reconnects on the next cast after a write error so a transient drop does not abort the stream.

Implementations

impl RelaySender

pub fn new( addr: impl Into<String>, device: impl Into<String>, token: impl Into<String>, ) -> Self

Build a sender targeting addr (host:port) for device with token (no connection is made until the first cast).

pub fn cast_one(&mut self, cmd: &InjectionCommand) -> Result<(), AppError>

Write one Cast frame over the held-open connection, connecting first if needed. On any I/O error the connection is dropped so the next call reconnects.

Errors

AppError::internal on connect / write failure (the stream is reset for a fresh reconnect next time).