chore(deps): update dependency gunicorn to v25

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
gunicorn (changelog)	==23.0.0 → ==25.0.1

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Release Notes

benoitc/gunicorn (gunicorn)

v25.0.1

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v25.0.0: Gunicorn 25.0.0

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New Features

• Dirty Arbiters: Separate process pool for executing long-running, blocking
  operations (AI model loading, heavy computation) without blocking HTTP workers
  (PR #​3460)

  • Inspired by Erlang's dirty schedulers
  • Asyncio-based with Unix socket IPC
  • Stateful workers that persist loaded resources
  • New settings: --dirty-app, --dirty-workers, --dirty-timeout,
    --dirty-threads, --dirty-graceful-timeout
  • Lifecycle hooks: on_dirty_starting, dirty_post_fork,
    dirty_worker_init, dirty_worker_exit

• Per-App Worker Allocation for Dirty Arbiters: Control how many dirty workers
  load each app for memory optimization with heavy models
  (PR #​3473)

  • Set workers class attribute on DirtyApp (e.g., workers = 2)
  • Or use config format module:class:N (e.g., myapp:HeavyModel:2)
  • Requests automatically routed to workers with the target app
  • New exception DirtyNoWorkersAvailableError for graceful error handling
  • Example: 8 workers × 10GB model = 80GB → with workers=2: 20GB (75% savings)

• HTTP/2 Support (Beta): Native HTTP/2 (RFC 7540) support for improved performance
  with modern clients (PR #​3468)

  • Multiplexed streams over a single connection
  • Header compression (HPACK)
  • Flow control and stream prioritization
  • Works with gthread, gevent, and ASGI workers
  • New settings: --http-protocols, --http2-max-concurrent-streams,
    --http2-initial-window-size, --http2-max-frame-size, --http2-max-header-list-size
  • Requires SSL/TLS and h2 library: pip install gunicorn[http2]
  • New example: examples/http2_gevent/ with Docker and tests

• HTTP 103 Early Hints: Support for RFC 8297 Early Hints to enable browsers to
  preload resources before the final response
  (PR #​3468)

  • WSGI: environ['wsgi.early_hints'](headers) callback
  • ASGI: http.response.informational message type
  • Works with both HTTP/1.1 and HTTP/2

• uWSGI Protocol for ASGI Worker: The ASGI worker now supports receiving requests
  via the uWSGI binary protocol from nginx
  (PR #​3467)

Bug Fixes

• Fix HTTP/2 ALPN negotiation for gevent and eventlet workers when
  do_handshake_on_connect is False (the default). The TLS handshake is now
  explicitly performed before checking selected_alpn_protocol().

• Fix setproctitle initialization with systemd socket activation
  (#​3465)

• Fix Expect: 100-continue handling: ignore the header for HTTP/1.0 requests
  since 100-continue is only valid for HTTP/1.1+
  (PR #​3463)

• Fix missing _expected_100_continue attribute in UWSGIRequest

• Disable setproctitle on macOS to prevent segfaults during process title updates

• Publish full exception traceback when the application fails to load
  (#​3462)

• Fix ASGI: quick shutdown on SIGINT/SIGQUIT, graceful on SIGTERM

Deprecations

• Eventlet Worker: The eventlet worker is deprecated and will be removed in
  Gunicorn 26.0. Eventlet itself is no longer actively maintained.
  Please migrate to gevent, gthread, or another supported worker type.

Changes

• Remove obsolete Makefile targets
  (PR #​3471)
• Replace RST with markdown documentation format

v24.1.1

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Bug Fixes

• Fix forwarded_allow_ips and proxy_allow_ips to remain as strings for backward
  compatibility with external tools like uvicorn. Network validation now uses strict
  mode to detect invalid CIDR notation (e.g., 192.168.1.1/24 where host bits are set)
  (#​3458,
  PR #​3459)

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Full Changelog: benoitc/gunicorn@24.1.0...24.1.1

v24.1.0: Gunicorn 24.1.0

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New Features

• Official Docker Image: Gunicorn now publishes official Docker images to GitHub Container Registry (PR #​3454)

  • Available at ghcr.io/benoitc/gunicorn
  • Based on Python 3.12 slim image
  • Uses recommended worker formula (2 × CPU + 1)
  • Configurable via environment variables

• PROXY Protocol v2 Support: Extended PROXY protocol implementation to support the binary v2 format in addition to the existing text-based v1 format (PR #​3451)

  • New --proxy-protocol modes: off, v1, v2, auto
  • auto mode (default when enabled) detects v1 or v2 automatically
  • v2 binary format is more efficient and supports additional metadata
  • Works with HAProxy, AWS NLB/ALB, and other PROXY protocol v2 sources

• CIDR Network Support: --forwarded-allow-ips and --proxy-allow-from now accept CIDR notation (e.g., 192.168.0.0/16) for specifying trusted networks (PR #​3449)

• Socket Backlog Metric: New gunicorn.socket.backlog gauge metric reports the current socket backlog size on Linux systems (PR #​3450)

• InotifyReloader Enhancement: The inotify-based reloader now watches newly imported modules, not just those loaded at startup (PR #​3447)

Bug Fixes

• Fix signal handling regression where SIGCLD alias caused "Unhandled signal: cld" errors on Linux when workers fail during boot (#​3453)
• Fix socket blocking mode on keepalive connections preventing SSL handshake failures with async workers (PR #​3452)
• Use smaller buffer size in finish_body() for faster timeout detection on slow or abandoned connections (PR #​3453)
• Handle SSLWantReadError in finish_body() to prevent worker hangs during SSL renegotiation (PR #​3448)
• Log SIGTERM as info level instead of warning to reduce noise in orchestrated environments (PR #​3446)
• Print exception details to stderr when worker fails to boot (PR #​3443)
• Fix unreader.unread() to prepend data to buffer instead of appending (PR #​3442)
• Prevent RecursionError when pickling Config objects (PR #​3441)
• Use proper exception chaining with raise from in glogging.py (PR #​3440)

Installation

pip install gunicorn==24.1.0

Or use the official Docker image:

docker pull ghcr.io/benoitc/gunicorn:24.1.0

v24.0.0

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New Features

• ASGI Worker (Beta): Native asyncio-based ASGI support for running async Python frameworks like FastAPI, Starlette, and Quart without external dependencies

  • HTTP/1.1 with keepalive connections
  • WebSocket support
  • Lifespan protocol for startup/shutdown hooks
  • Optional uvloop for improved performance

• uWSGI Binary Protocol: Support for receiving requests from nginx via uwsgi_pass directive

• Documentation Migration: Migrated to MkDocs with Material theme

Security

• eventlet: Require eventlet >= 0.40.3 (CVE-2021-21419, CVE-2025-58068)
• gevent: Require gevent >= 24.10.1 (CVE-2023-41419, CVE-2024-3219)
• tornado: Require tornado >= 6.5.0 (CVE-2025-47287)

Install

pip install gunicorn==24.0.0

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