There is no singleton of WebDAV. How can we be ensured that the WebDAV instantiated with parsing Caddyfile config will be the one seving HTTP()

There is no singleton of WebDAV in your code, however, the new(WebDAV) has been called in many places, especially it's total out of control where the New() in ModuleInfo will be called.

// CaddyModule returns the Caddy module information.
func (WebDAV) CaddyModule() caddy.ModuleInfo {
    return caddy.ModuleInfo{
        ID:  "http.handlers.webdav",
        **New: func() caddy.Module { return new(WebDAV) },**
    }
}

// parseWebdav parses the Caddyfile tokens for the webdav directive.
func parseWebdav(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
    **wd := new(WebDAV)**
    err := wd.UnmarshalCaddyfile(h.Dispenser)
    if err != nil {
        return nil, err
    }
    return wd, nil
}

How can we ensure that the wd WebDAV serving the HTTP request should be the WebDAV instance containing the Caddyfile config for DAV?

func (wd WebDAV) ServeHTTP(w http.ResponseWriter, r *http.Request, next caddyhttp.Handler) error

mholt / caddy-webdav

There is no singleton of WebDAV. How can we be ensured that the WebDAV instantiated with parsing Caddyfile config will be the one seving HTTP() #52