Request context chain

The context chain of any request is established as follows:

The request starts with a root context, associated with a specific context ID.
The root context is wrapped in the security context that includes the authentication and authorization detail for the request.
The security context is further wrapped by the HTTP context, with the target URI. The HTTP context is associated with the normal parameters of the request, including a user agent, authorization token, and method.
The HTTP context is wrapped by one or more server/router context(s), with an endpoint URI. The request can have several layers of server and router contexts.