🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support for 2023. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

Features

• Added support for Python 3.13. (#3473)

Bugfixes

• Fixed the default encoding of chunked request bodies to be UTF-8 instead of ISO-8859-1. All other methods of supplying a request body already use UTF-8 starting in urllib3 v2.0. (#3053)
• Fixed ResourceWarning on CONNECT with Python < 3.11.4 by backporting python/cpython#103472. (`#3252)
• Adjust tolerance for floating-point comparison on Windows to avoid flakiness in CI (#3413)
• Fixed a crash where certain standard library hash functions were absent in restricted environments. (#3432)
• Fixed mypy error when adding to HTTPConnection.default_socket_options. (#3448)

HTTP/2 (experimental)

HTTP/2 support is still in early development.

• Excluded Transfer-Encoding: chunked from HTTP/2 request body (#3425)
• Added version checking for h2 (https://pypi.org/project/h2/) usage. Now only accepting supported h2 major version 4.x.x. (#3290)
• Added a probing mechanism for determining whether a given target origin supports HTTP/2 via ALPN. (#3301)
• Add support for sending a request body with HTTP/2 (#3302)

Full Changelog: 2.2.2...2.2.3

🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support for 2023. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

Changes

• Fixed a crash where certain standard library hash functions were absent in FIPS-compliant environments. (#3432)
• Replaced deprecated dash-separated setuptools entries in setup.cfg. (#3461)
• Took into account macOS setting ECONNRESET instead of EPROTOTYPE in its newer versions. (#3416)
• Backported changes to our tests and CI configuration from v2.x to support testing with CPython 3.12 and 3.13. (#3436)

Full Changelog: 1.26.19...1.26.20

🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support for 2023. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

Changes

• Added the Proxy-Authorization header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via Retry.remove_headers_on_redirect.
• Allowed passing negative integers as amt to read methods of http.client.HTTPResponse as an alternative to None. (#3122)
• Fixed return types representing copying actions to use typing.Self. (#3363)

Full Changelog: 2.2.1...2.2.2

🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support for 2023. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

Changes

• Added the Proxy-Authorization header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via Retry.remove_headers_on_redirect.

Full Changelog: 1.26.18...1.26.19

Note that due to an issue with our release automation, no multiple.intoto.jsonl file is available for this release.

🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support for 2023. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

Changes

• Fixed issue where InsecureRequestWarning was emitted for HTTPS connections when using Emscripten. (#3331)
• Fixed HTTPConnectionPool.urlopen to stop automatically casting non-proxy headers to HTTPHeaderDict. This change was premature as it did not apply to proxy headers and HTTPHeaderDict does not handle byte header values correctly yet. (#3343)
• Changed ProtocolError to InvalidChunkLength when response terminates before the chunk length is sent. (#2860)
• Changed ProtocolError to be more verbose on incomplete reads with excess content. (#3261)

🖥️ urllib3 now works in the browser

🎉 This release adds experimental support for using urllib3 in the browser with Pyodide! 🎉

Thanks to Joe Marshall (@joemarshall) for contributing this feature. This change was possible thanks to work done in urllib3 v2.0 to detach our API from http.client. Please report all bugs to the urllib3 issue tracker.

🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support for 2023. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

Changes

• Added support for Emscripten and Pyodide, including streaming support in cross-origin isolated browser environments where threading is enabled. (#2951)
• Added support for HTTPResponse.read1() method. (#3186)
• Added rudimentary support for HTTP/2. (#3284)
• Fixed issue where requests against urls with trailing dots were failing due to SSL errors
  when using proxy. (#2244)
• Fixed HTTPConnection.proxy_is_verified and HTTPSConnection.proxy_is_verified to be always set to a boolean after connecting to a proxy. It could be None in some cases previously. (#3130)
• Fixed an issue where headers passed in a request with json= would be mutated (#3203)
• Fixed HTTPSConnection.is_verified to be set to False when connecting from a HTTPS proxy to an HTTP target. It was set to True previously. (#3267)
• Fixed handling of new error message from OpenSSL 3.2.0 when configuring an HTTP proxy as HTTPS (#3268)
• Fixed TLS 1.3 post-handshake auth when the server certificate validation is disabled (#3325)

Note for downstream distributors: To run integration tests, you now need to run the tests a second time with the --integration pytest flag. (#3181)

Read the v2 migration guide for help upgrading to the latest version of urllib3.

Removals

• Removed support for the deprecated urllib3[secure] extra. (#2680)
• Removed support for the deprecated SecureTransport TLS implementation. (#2681)
• Removed support for the end-of-life Python 3.7. (#3143)

Bugfixes

• Allowed loading CA certificates from memory for proxies. (#3065)
• Fixed decoding Gzip-encoded responses which specified x-gzip content-encoding. (#3174)

• Made body stripped from HTTP requests changing the request method to GET after HTTP 303 "See Other" redirect responses. (GHSA-g4mx-q9vg-27p4)

• Made body stripped from HTTP requests changing the request method to GET after HTTP 303 "See Other" redirect responses. (GHSA-g4mx-q9vg-27p4)

• Added the Cookie header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via Retry.remove_headers_on_redirect. (GHSA-v845-jxx5-vc9f)