Version 0.13

[tomchristie]

Preliminary CHANGELOG and __version__ update for 0.13.

Still required...

• Review if we want Use URLLib3 configuration options for URLLib3 transport #970. (Use urllib3 native config for URLLib3Transport pooling options)
• Review if we want the second half of Consider URLLib3Transport interface, since it's becoming public API. #966. (Use seperated URLLib3Transport and URLLib3ProxyTransport classes as the public API)

Up for reviews onto this in the meantime tho...

---

0.13.0 (May 22nd, 2020)

This release switches to httpcore for all the internal networking, which means:

• We're using the same codebase for both our sync and async clients.
• HTTP/2 support is now available with the sync client.
• We no longer have a urllib3 dependency for our sync client, although there is still an optional URLLib3Transport class.

It also means we've had to remove our UDS support, since maintaining that would have meant having to push back our work towards a 1.0 release, which isn't a trade-off we wanted to make.

We also now have a public "Transport API", which you can use to implement custom transport implementations against. This formalises and replaces our previously private "Dispatch API".

Changed

• Use httpcore for underlying HTTP transport. Drop urllib3 requirement. (Pull Httpcore interface #804, Updates for httpcore 0.9 interface. #967)
• Rename pool limit options from soft_limit/hard_limit to max_keepalive/max_connections. (Pull Rename pool limit options #968)
• The previous private "Dispatch API" has now been promoted to a public "Transport API". When customizing the transport use transport=.... The ASGIDispatch and WSGIDispatch class naming is deprecated in favour of ASGITransport and WSGITransport. (Pull Transport API #963)

Added

• Added URLLib3Transport class for optional urllib3 transport support. (Pull Httpcore interface #804, Transport API #963)
• Streaming multipart uploads. (Pull Implement streaming multipart uploads #857)
• Logging via HTTPCORE_LOG_LEVEL and HTTPX_LOG_LEVEL environment variables
  and TRACE level logging. (Pull Add logger trace httpcore#79)

Fixed

• Performance improvement in brotli decoder. (Pull Avoid hasattr in hot loop in brotli decoder #906)
• Proper warning level of deprecation notice in Response.stream and Response.raw. (Pull Proper warning level of deprecation notice #908)
• Fix support for generator based WSGI apps. (Pull Fix support for generator-based WSGI apps #887)
• Reuse of connections on HTTP/2 in close concurrency situations. (Pull get-or-create-connection should be an atomic operation httpcore#81)
• Honor HTTP/2 max concurrent streams settings (Pull Honor max concurrent streams httpcore#89, Max concurrent stream improvements httpcore#90)
• Fix bytes support in multipart uploads. (Pull Fix bytes support in multipart uploads #974)
• Improve typing support for files=.... (Pull Improve typing support for the files parameter #976)

Removed

• Dropped support for Client(uds=...) (Pull Httpcore interface #804)

[tomchristie]

Okay, I guess we're ready for reviews from @encode/maintainers.

I'll plan to sit on this one for the rest of today, and then release start-of-working-day tomorrow.

[florimondmanca]

@tomchristie I'll update this PR with my small multipart fixes. :-)

[florimondmanca]

So glad to see this happen! Congrats all ❤️

[tomchristie]

Now up on PyPI. 👍

[yeraydiazdiaz]

Woohooo!! 🎉