There is at least one memory leak request.readline(). I'm currently auditing the code so there may well be others.
I think the leak will only occur when the request body is incompletely read with readline, which is likely an unusual corner case. The following demostrates the leak:
Consider a request body consisting of:
'\n'.join([ 'a'*100 for i in xrange(0, 100) ])
and using this handler:
- Handler reads 20 lines but request contains 100 lines.
- Since the body is not completely read, the buffer allocated
- in requestobject.c req_readline is never freed.
req.content_type = 'text/plain'
count = 0
for i in range(0, 20):
line = req.readline()
count += 1
req.write('ok readline_partial: %d lines read' % count)
With this test setup I'm seeing a leak of approx 10k bytes per request.