SAML Token Renewal in action - 7.1

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Finally, let's take a look at a system test in CXF that shows how to renew a SAML Token issued by an STS. The wsdl of the service provider defines a number of endpoints which use the transport binding, with a (endorsing) supporting token requirement which has an IssuedToken policy that requires a SAML token. In other words, the client must request a SAML token from an STS and send it to the service provider over TLS, and optionally use the secret associated with the SAML token to sign the message Timestamp (if an EndorsingSupportingToken policy is specified in the wsdl).

The STS spring configuration is available here. The SAMLTokenRenewer is configured with proof-of-possession enabled, and tokens are allowed to be renewed after they have expired. Let's look at the test code and client configuration. All of the tests follow the same pattern. The client requests a SAML Token from the STS (as per the IssuedToken policy), with a TTL (time-to-live) value of 8 seconds. The client then uses this issued token to make a successful request to the service provider. The test code then sleeps for 8 seconds to expire the token, and tries to invoke on the service provider again. The IssuedTokenInterceptorProvider in the WS-Security runtime in CXF recognizes that the token has expired, and sends it to the STS for renewal. The returned (renewed) token is then sent to the service provider.