[Httplib2-discuss] Message.items()

[Ian B. <ia...@co...>]

httplib2 seems to be using email.Message.Message.items() for getting the 
headers.  I believe this function folds headers in a way that is 
supposed to be valid for HTTP, but in practice does not produce valid 
Set-Cookie headers.  In paste.proxy I encountered this problem, and had 
to do this to pipe accurate headers through:

         for full_header in res.msg.headers:
             header, value = full_header.split(':', 1)
             value = value.strip()
             headers_out.append((header, value))

There might also be a safe way to fold multiple Set-Cookie headers, but 
the standard ways to fold headers don't work.  Maybe parsing the cookie 
headers and then reserializing would work; then you could use a dict. 
Otherwise something like paste.util.multidict.MultiDict could still 
support the headers (or wsgiref has another header dict-like object, I 
believe).

-- 
Ian Bicking | ia...@co... | http://blog.ianbicking.org