Exchange — HTTP exchange of request and response
The root object for the exchange object model: an HTTP exchange of request and response. The exchange object model parallels the document object model, exposing elements of the exchange. It supports this by exposing a set of fixed properties and allowing arbitrary properties to be added.
"exchange": objectSelf-referential property to make this the root object in the exchange object model.
"request": objectThe request portion of the HTTP exchange.
"response": objectThe response portion of the HTTP exchange.
"principal": objectThe principal associated with the request, or null
if unknown.
"session": objectSession context associated with the remote client. Exposes session attributes as name-value pairs, where both name and value are strings.