Examples with subrequest

Is your feature request related to a problem? Please describe.
Show please example of module where we use subrequest with original body to custom own server, handle response and depend on response (403 or 200) return error or continue execution.

I don't know why i have Segfault on my module:

http_request_handler!(wafng_read_post_handler, |request: &mut http::Request| {
    let module = unsafe { addr_of!(NGX_HTTP_WAFNG_MODULE).as_ref().unwrap() };
    let config = request
        .get_module_loc_conf::<ModuleConfig>(module)
        .expect("module config is none");

    if matches!(config.mode, Mode::Off) {
        return Status::NGX_DECLINED;
    }

    let status = request.subrequest("/score", module, subrequest_callback);
}
unsafe extern "C" fn subrequest_callback(
    r: *mut ngx_http_request_t,
    v: *mut c_void,
    i: ngx_int_t,
) -> ngx_int_t {
    let req = unsafe { Request::from_ngx_http_request(r) };
    for (header, value) in req.headers_in_iterator() {
        eprint!("Header = {header}, value = {value}");
    }
    eprintln!("\nRECEIVED SUBREQUEST");
    0
}

Start with the subrequest call and subrequest_callback shown in the issue, then inspect the repository's existing subrequest API and Rust NGINX request bindings. Done means providing an example that sends the original body to a custom server, handles the response, and continues or returns an error for 200 and 403 responses.