urllib3.future is a powerful, user-friendly HTTP client for Python. urllib3.future goes beyond supported features while remaining compatible. urllib3.future brings many critical features that are missing from both the Python standard libraries and urllib3: - Async. - Task safety. - Thread safety. - Happy Eyeballs. - Connection pooling. - Unopinionated about OpenSSL. - Client-side SSL/TLS verification. - Highly customizable DNS resolution. - File uploads with multipart encoding. - DNS over UDP, TLS, QUIC, or HTTPS. DNSSEC protected. - Helpers for retrying requests and dealing with HTTP redirects. - Automatic Keep-Alive for HTTP/1.1, HTTP/2, and HTTP/3. - Support for gzip, deflate, brotli, and zstd encoding. - Support for Python/PyPy 3.7+, no compromise. - Automatic Connection Upgrade / Downgrade. - Early (Informational) Responses / Hints. - HTTP/1.1, HTTP/2 and HTTP/3 support. - WebSocket over HTTP/2+ (RFC8441). - Proxy support for HTTP and SOCKS. - Post-Quantum Security with QUIC. - Detailed connection inspection. - HTTP/2 with prior knowledge. - Server Side Event (SSE). - Multiplexed connection. - Mirrored Sync & Async. - Trailer Headers. - Amazingly Fast. - WebSocket. urllib3.future is powerful and easy to use.