Replicate without chunking

[ctengel]

Client side of #35

Consider with #5

[ctengel]

See https://github.com/requests/toolbelt/blob/master/requests_toolbelt/streaming_iterator.py

[ctengel]

Still amazing that this ever worked before...

Some clues and other info:

https://docs.python.org/3/library/http.client.html

Changed in version 3.6: If neither Content-Length nor Transfer-Encoding are set in headers, file and iterable body objects are now chunk-encoded. The encode_chunked argument was added. No attempt is made to determine the Content-Length for file objects.

[ctengel]

See also psf/requests#1648

[ctengel]

Also see if Content-Digest is appropriate (vs Repr) when we are chunking

[ctengel]

https://github.com/encode/httpx/issues/1490