This section describes the flags for dr_net_write function.
Specifies that no cache is used, so the function works as net_write does, DrHdl can be NULL.
Forces the cache to refresh, even if it has not expired.
Returns DR_EXPIR if the cache has expired. If the calling function has not provided a refresh function and this flag is not used, DR_ERROR is returned.
Ignores cache expiration and sends out the cache entry even if it has expired.
Supplies the Content-Length header and does a PROTOCOL_START_RESPONSE.
Does a PROTOCOL_START_RESPONSE.