Encapsulates all HTTP-specific information about an individual HTTP request.
HttpContext represents execution state of an HTTP process. It is a structure that can be used to map an attribute name to an attribute value.
The primary purpose of the HTTP context is to facilitate information sharing among various logically related components. HTTP context can be used to store a processing state for one message or several consecutive messages. Multiple logically related messages can participate in a logical session if the same context is reused between consecutive messages.