Crate vzglyd_sidecar 

vzglyd_sidecar

Networking and IPC utilities for VZGLYD slide sidecars.

A sidecar is a companion wasm32-wasip1 program that fetches external data and pushes it into a paired slide over the VZGLYD host channel.

Typical Structure

use vzglyd_sidecar::{https_get_text, poll_loop};

fn main() {
    poll_loop(60, || {
        let body = https_get_text("api.example.com", "/data")?;
        Ok(body.into_bytes())
    });
}

This crate is primarily intended for the wasm32-wasip1 target used by VZGLYD sidecars.

Enums

Error

Errors returned by network and channel helpers.

Functions

channel_active

Return true when the paired slide is currently active on screen.

channel_poll

Poll the shared channel for the latest payload.

channel_push

Push a new payload into the shared sidecar-to-slide channel.

env_var

Read an environment variable from the sidecar process.

https_get

Perform an HTTPS GET request and return the raw response body.

https_get_conditional

Perform a conditional HTTPS GET request using ETag and Last-Modified hints.

https_get_text

Perform an HTTPS GET request and decode the body as UTF-8 text.

info_log

Emit an informational log message through the VZGLYD host.

poll_loop

Repeatedly fetch payloads and push them into the slide channel.

sleep_secs

Sleep for a whole number of seconds.

split_https_url

Split an HTTPS URL into (host, path) for use with https_get helpers.

tcp_connect

Attempt a TCP connection and return the time taken to establish it.

Type Aliases

ConditionalGetResult

Body, ETag, and Last-Modified returned by a conditional GET.