Httpx

Removed

* Drop support for Python 3.7. (2813)

Added

* Support HTTPS proxies. (2845)
* Change the type of `Extensions` from `Mapping[Str, Any]` to `MutableMapping[Str, Any]`. (2803)
* Add `socket_options` argument to `httpx.HTTPTransport` and `httpx.AsyncHTTPTransport` classes. (2716)
* The `Response.raise_for_status()` method now returns the response instance. For example: `data = httpx.get('...').raise_for_status().json()`. (2776)

Fixed

* Return `500` error response instead of exceptions when `raise_app_exceptions=False` is set on `ASGITransport`. (2669)
* Ensure all `WSGITransport` environs have a `SERVER_PROTOCOL`. (2708)
* Always encode forward slashes as `%2F` in query parameters (2723)
* Use Mozilla documentation instead of `httpstatuses.com` for HTTP error reference (2768)

Added

* Provide additional context in some `InvalidURL` exceptions. (2675)

Fixed

* Fix optional percent-encoding behaviour. (2671)
* More robust checking for opening upload files in binary mode. (2630)
* Properly support IP addresses in `NO_PROXY` environment variable. (2659)
* Set default file for `NetRCAuth()` to `None` to use the stdlib default. (2667)
* Set logging request lines to INFO level for async requests, in line with sync requests. (2656)
* Fix which gen-delims need to be escaped for path/query/fragment components in URL. (2701)

Changed

* The logging behaviour has been changed to be more in-line with other standard Python logging usages. We no longer have a custom `TRACE` log level, and we no longer use the `HTTPX_LOG_LEVEL` environment variable to auto-configure logging. We now have a significant amount of `DEBUG` logging available at the network level. Full documentation is available at https://www.python-httpx.org/logging/ (#2547, encode/httpcore648)
* The `Response.iter_lines()` method now matches the stdlib behaviour and does not include the newline characters. It also resolves a performance issue. (2423)
* Query parameter encoding switches from using + for spaces and %2F for forward slash, to instead using %20 for spaces and treating forward slash as a safe, unescaped character. This differs from `requests`, but is in line with browser behavior in Chrome, Safari, and Firefox. Both options are RFC valid. (2543)
* NetRC authentication is no longer automatically handled, but is instead supported by an explicit `httpx.NetRCAuth()` authentication class. See the documentation at https://www.python-httpx.org/advanced/authentication/#netrc-authentication (2525)

Removed

* The `rfc3986` dependancy has been removed. (2252)

Fixed

* Version 0.23.2 accidentally included stricter type checking on query parameters. This shouldn've have been included in a minor version bump, and is now reverted. (2523, 2539)

Added

* Support digest auth nonce counting to avoid multiple auth requests. (2463)

Fixed

* Multipart file uploads where the file length cannot be determine now use chunked transfer encoding, rather than loading the entire file into memory in order to determine the `Content-Length`. (2382)
* Raise `TypeError` if content is passed a dict-instance. (2495)
* Partially revert the API breaking change in 0.23.1, which removed `RawURL`. We continue to expose a `url.raw` property which is now a plain named-tuple. This API is still expected to be deprecated, but we will do so with a major version bump. (2481)

**Note**: The 0.23.1 release should have used a proper version bump, rather than a minor point release.
There are API surface area changes that may affect some users.
See the "Removed" section of these release notes for details.

Added

* Support for Python 3.11. (2420)
* Allow setting an explicit multipart boundary in `Content-Type` header. (2278)
* Allow `tuple` or `list` for multipart values, not just `list`. (2355)
* Allow `str` content for multipart upload files. (2400)
* Support connection upgrades. See https://www.encode.io/httpcore/extensions/#upgrade-requests

Fixed

* Don't drop empty query parameters. (2354)

Removed

* Upload files *must* always be opened in binary mode. (2400)
* Drop `.read`/`.aread` from `SyncByteStream`/`AsyncByteStream`. (2407)
* Drop `RawURL`. (2241)