val location = userResponse.header("Location") ?: return null
    // Don't follow redirects to unsupported protocols.
    val url = userResponse.request.url.resolve(location) ?: return null

    // If configured, don't follow redirects between SSL and non-SSL.
    val sameScheme = url.scheme == userResponse.request.url.scheme
    if (!sameScheme && !client.followSslRedirects) return null