Part of twisted.protocols.basic View Source View In Hierarchy
recvd attribute was where the working buffer for
buffering and parsing netstrings was kept. It was updated each time new
data arrived and each time some of that data was parsed and delivered to
application code. The piecemeal updates to its string value were expensive
and have been removed from
IntNStringReceiver in the normal
case. However, for applications directly reading this attribute, this
descriptor restores that behavior. It only copies the working buffer when
necessary (ie, when accessed). This avoids the cost for applications not
using the data.
This is a custom descriptor rather than a property, because we still need the default __set__ behavior in both new-style and old-style subclasses.