Struct Client 

pub struct Client { /* private fields */ }

A connected client for an opcda-bridge gateway’s gRPC API.

Every method takes &mut self, matching the generated BridgeClient’s own requirement (it buffers per-call codec state); the underlying tonic channel itself is a cheap-to-reuse, multiplexed HTTP/2 connection, so a single Client is meant to be held and reused across many calls rather than reconnected per request (unlike opcda-bridge-client’s CLI, which is a fresh process per invocation and so never notices the difference).

Implementations

impl Client

pub async fn connect(host: &str) -> Result<Self>

Connect to a gateway at host (e.g. "localhost:7600").

Matches opcda-bridge-client’s long-standing http://{host} scheme assumption: the gateway only ever serves plaintext HTTP/2 (no TLS).

pub async fn list_servers(&mut self) -> Result<Vec<String>>

List the OPC DA servers registered on the gateway’s host.

pub async fn browse( &mut self, server: String, flat: bool, path: String, max_tags: u32, ) -> Result<Vec<BrowseNode>>

Browse one level of server’s tag tree rooted at path (empty for the top level), fully materialized into a Vec rather than a raw stream. Every current caller (the CLI, and any bhtune-style consumer) wants a complete result before doing anything else, so this drains the stream internally rather than exposing it, sparing callers a dependency on tokio-stream/futures just to consume it.

flat and max_tags are forwarded to the gateway unchanged; the gateway alone decides how they affect what’s returned (e.g. flat yielding every descendant tag instead of one level). path selects which branch of the tree to browse.

pub async fn read( &mut self, server: String, tags: Vec<String>, ) -> Result<Vec<TagValue>>

Read one or more tag values from server.

pub async fn write( &mut self, server: String, tag: String, value: Value, ) -> Result<WriteResult>

Write value to tag on server.

Trait Implementations

impl Debug for Client

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.