VirtualRequests¶

One request may need several sub requests; fastcgi defines 3 roles for backends which i would use here too (with a little bit different interpretation):

• Authorizer: doesn't see the request content; request handling waits until result is available
  This one is the same as the fastcgi authorizer.

Implementation: authorize actionblock

• make a virtual request, copy the "request" into it
• wait for response headers; if status = 200: drop content and go on
  else forward content and response headers

• Responder: generates the content
• Filter: a response filter

Basic Structure¶

• callbacks set by the master of a request:
  • handle_request_headers
  • handle_response_headers
  • handle_response_body
  • handle_response_error
• callbacks set by the content handler via vrequest_handle_indirect:
  • handle_request_body
• use vrequest_handle_direct if you don't need extra handling (like reading the request-body)