Edit : fixed in github but not in pypi : Bad content-length set after 2 put_file

Hi,

When you issue 2 put_file request with different file size, the header content-length is stuck at the size of the first file, causing a 400 return code from server due to the invalid content-length.

To reproduce the issue :

f_path = 'tmp'
with open(f_path, 'wb') as f:
    f.write("toto")
s3.put_file(f_path, f_path)
with open(f_path, 'wb') as f:
    f.write("toto2")
s3.put_file(f_path, f_path)

Tested against RADOS GATEWAY.

The root cause is due to the fact that is header param is empty when calling put_file, a default dict is assigned in the function definition. https://github.com/lericson/simples3/blob/master/simples3/streaming.py#L34

As a result, every subsequent call will get the same object reference (as the dict is in the class scope and not function scope).

Content-length will always be set after the first call, as a result it is not updated https://github.com/lericson/simples3/blob/master/simples3/streaming.py#L58

Here is a fix :

class StreamingMixin(object):
    def put_file(self, key, fp, acl=None, metadata={}, progress=None,
                 size=None, mimetype=None, transformer=None, headers=None):
        """Put file-like object or filename *fp* on S3 as *key*.
        *fp* must have a read method that takes a buffer size, and must behave
        correctly with regards to seeking and telling.
        *size* can be specified as a size hint. Otherwise the size is figured
        out via ``os.fstat``, and requires that *fp* have a functioning
        ``fileno()`` method.
        *progress* is a callback that might look like ``p(current, total,
        last_read)``. ``current`` is the current position, ``total`` is the
        size, and ``last_read`` is how much was last read. ``last_read`` is
        zero on EOF.
        """
        if not headers:
            headers = {}
        do_close = False

lericson / simples3

Edit : fixed in github but not in pypi : Bad content-length set after 2 put_file #24