Struct TcpSender 

pub struct TcpSender { /* private fields */ }

A hold-open bare-NDJSON-over-TCP sender for STREAMING dispatch (bd-772cb2): one connection is kept open across many commands instead of reconnecting per command. Connects lazily on the first cast and reconnects on the next cast after a write error (so a transient device drop does not abort the stream).

Implementations

impl TcpSender

pub fn new(host: &str, port: u16) -> Self

Build a sender for host:port (no connection is made until the first cast).

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

Send one command as a bare NDJSON line 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 / flush failure (the stream is reset for a fresh reconnect next time).