pub async fn origin_guard(
request: Request<Body>,
next: Next,
) -> Result<Response<Body>, StatusCode>Expand description
Axum middleware that blocks requests a web page made a browser send.
Runs before the rate limiter, so a refused request never spends a token (a page looping
<img src="http://127.0.0.1:7373/health"> sends no Origin and used to drain the shared
bucket until the agent was answered 429).
§Errors
Returns StatusCode::FORBIDDEN if the request carries a Sec-Fetch-Site header other
than none (every modern browser marks page-initiated requests; none is a user
navigation), or an Origin header that is unreadable or not a localhost origin.