D231: httppeer: add support for httppostargs when we're sending a file

[yuja (Yuya Nishihara)]

yuja added inline comments.

INLINE COMMENTS

> httppeer.py:105
> +    def read(self, amt=None):
> +        if amt <= 0:
> +            return ''.join(f.read() for f in self._fileobjs)

Just nits:

- `read(0)` should return an empty string.
- `None <= 0` is TypeError on Python 3.

> httppeer.py:223
> +                argsio.length = len(strargs)
> +                data = _multifile(argsio, data)
> +            headers['X-HgArgs-Post'] = len(strargs)

Does this mean `data` must have `length` attribute if it isn't
a string? A plain file object has no such attribute.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D231

To: durin42, #hg-reviewers, martinvonz
Cc: yuja, martinvonz, mercurial-devel