[Serusers] get 302 contact in failure route

Hello, I?m trying to write my module. I need to read the uri in the contact header field of the ?302? response. How can I get this header in the failure route block? ********************************************************************** The information in this message is confidential and may be legally privileged. It is intended solely for the addressee. Access to this message by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, or distribution of the message, or any action or omission taken by you in reliance on it, is prohibited and may be unlawful. Please immediately contact the sender if you have received this message in error. **********************************************************************