Function client_ip

mserver/MasterService/src/http.rs:853–861

The caller's real IP from the configured trusted header (leftmost `X-Forwarded-For` value behind an ingress). `None` when no header is configured or present.

(state: &AppState, headers: &HeaderMap)

/// usable Host header — the link is then left as stored (relative).
fn request_base_url(headers: &HeaderMap) -> Option<String> {
    let host = headers
        .get(axum::http::header::HOST)
        .and_then(|value| value.to_str().ok())
        .map(str::trim)
        .filter(|value| !value.is_empty())?;
    let scheme = headers
        .get("x-forwarded-proto")
        .and_then(|value| value.to_str().ok())
        .and_then(|value| value.split(',').next())
        .map(str::trim)
        .filter(|value| !value.is_empty())
        .unwrap_or("http");