Function normalize_http_base_url 

pub fn normalize_http_base_url(
    value: &str,
    label: &str,
    options: HttpBaseUrlOptions,
) -> Result<Option<String>>

Normalizes an HTTP base URL.

Surrounding whitespace and trailing slashes are removed before parsing. The URL must be absolute, use http or https, and include a host. When options.forbid_query_fragment is set, query strings and fragments are rejected so callers can safely append paths.