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Designing Evolvable Web APIs with ASP.NET
book

Designing Evolvable Web APIs with ASP.NET

by Glenn Block, Pablo Cibraro, Pedro Felix, Howard Dierking, Darrel Miller
March 2014
Intermediate to advanced
538 pages
13h 19m
English
O'Reilly Media, Inc.
Content preview from Designing Evolvable Web APIs with ASP.NET

Appendix E. Authentication Workflows

The client-to-origin workflow involves a client authenticating to an origin server, as shown in Figure E-1.

Client authenticates with origin
Figure E-1. Client authenticates with origin

The client attempts to access a protected resource from an origin server. The server, seeing that the resource is protected, sends back a challenge to the client via a 401 Unauthorized response. The response contains a WWW-Authenticate header (see Table B-3) that contains one or more challenges that the client must respond to in order to access the resource.

The client then sends back a request to the resource providing an Authorization header with the requested credentials.

In the client-to-proxy workflow, a client attempts to access a resource via a secure proxy that it must authenticate against. This is shown in Figure E-2.

Client authenticates with proxy
Figure E-2. Client authenticates with proxy

The client attempts to access a protected resource via an authenticated proxy. The proxy, seeing the request, sends back a challenge to the client via a 407 Proxy Authentication Required response. The response contains a Proxy-Authenticate header (see Table B-3) that contains one or more challenges for accessing the proxy itself. The client then sends back the request, including the Proxy-Authorization header with the requested credentials. ...

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Publisher Resources

ISBN: 9781449337919Errata Page