How do I copy wsgi.input if I want to process POST data more than once?

Question

In WSGI, post data is consumed by reading the file-like object environ[\'wsgi.input\']. If a second element in the stack also wants to read post data it may han

Answer 1

If you're gonna read it in one fell swoop, you could always read it in, create a CStringIO file-like object of the stuff you've read and then assign it back, like this:

import cStringIO
import copy
lines = []
for line in environ['wsgi.input']:
    lines.append(line)
newlines = copy.copy(lines)
environ['wsgi.input'] = cStringIO.StringIO(''.join(newlines))

There's most likely a more efficient way to do this, but I in general find wsgi's post stuff pretty brittle if you want to do anything non-trivial (like read post data muptiple times)...