MAJOR: stream: do not allocate request buffers anymore when the left side is an applet

We used to allocate a request buffer so that we could process applets
from process_stream(), and this was causing some trouble because it was
not possible for an analyzer to return an error to an applet, which
we'll need for HTTP/2. Now that we don't call applets anymore from
process_stream() we can simplify this and ensure that a response is
always allocated to process a stream.
1 file changed