当将其值设置为一个加密的SAML 2令牌时，授权头为空。

I'm using Thinktechture Identity Server to issue my SAML security tokens using the WS-Trust protocol. Then I'm calling my WEB Api with an Authorization http header containing the token. The token is handled successfully using Thinktechture.IdentityModel.I'm using Thinktechture Identity Server to issu