Demian Brecht added the comment:
@Serhiy:
> Content-Length shouldn't be calculated for lists, tuples, and other
> non-bytes-compatible sequences.
I'd agree with this if it wasn't relatively trivial to calculate. There's no
reason that I can think of to exclude the auto-generated Content-Length header
for data types for which the size is known.
@Martin:
> Technically I don’t think there is a bug.
The bug is that the Content-Length header is currently added for bodies that
are lists and tuples and the value is incorrect. For example:
con.request('POST', '/', ['aaa', 'bbb', 'ccc'])
results in
Host: example.com
Accept-Encoding: identity
Content-Length: 3
@David:
> Since the latter cannot be done reliably unless we know the list or tuple is
> all bytes, I propose that we don't do it at all (since I'd like to see
> iterables of text strings supported).
The patch here adds support for iterables of text strings (as well as iterables
comprised of both bytes and strings). Content-Length can be computed reliably
as the size of a latin1-encoded string will be identical to the original string.
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<http://bugs.python.org/issue23350>
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