sse-starlette

What's Changed

• fix: apply send timeout to heartbeat messages by @wse114 in #208

New Contributors

• @wse114 made their first contribution in #208

Full Changelog: v3.4.9...v3.4.10

What's Changed

• fix: disable keep-alive pings when ping=0 (#206) by @sysid in #207

Full Changelog: v3.4.8...v3.4.9

Full Changelog: v3.4.7...v3.4.8

Bump version: 3.4.6 → 3.4.7

What's Changed

• chore(deps): bump daphne from 4.2.1 to 4.2.2 by @dependabot[bot] in #201
• chore(deps): bump actions/checkout from 6 to 7 by @dependabot[bot] in #200
• make ping tests independent of wall-clock timing by @mahenzon in #202

New Contributors

• @mahenzon made their first contribution in #202

Full Changelog: v3.4.5...v3.4.6

What's Changed

• chore(deps): bump ujson from 5.12.0 to 5.12.1 by @dependabot[bot] in #187
• chore(deps): bump idna from 3.11 to 3.15 by @dependabot[bot] in #188
• chore(deps): bump actions/download-artifact from 4 to 8 by @dependabot[bot] in #190
• chore(deps): bump starlette from 0.50.0 to 1.0.1 by @dependabot[bot] in #193
• chore(deps): bump twisted from 25.5.0 to 26.4.0rc2 by @dependabot[bot] in #194
• chore(deps): bump cryptography from 46.0.7 to 48.0.1 by @dependabot[bot] in #196
• chore(deps): bump msgpack from 1.1.2 to 1.2.1 by @dependabot[bot] in #197
• chore(deps): bump ujson from 5.12.1 to 5.13.0 by @dependabot[bot] in #198
• fix: test selection by @sysid in #199
• chore(deps): bump starlette from 1.0.1 to 1.3.1 by @dependabot[bot] in #195

Full Changelog: v3.4.4...v3.4.5

Full Changelog: v3.4.3...v3.4.4

What's Changed

• chore(deps): bump granian from 2.6.0 to 2.7.4 by @dependabot[bot] in #185
• chore(deps): bump urllib3 from 2.6.3 to 2.7.0 by @dependabot[bot] in #186

Full Changelog: v3.4.2...v3.4.3

Full Changelog: v3.4.1...v3.4.2

What's Changed

• chore(deps): bump cryptography from 46.0.6 to 46.0.7 by @dependabot[bot] in #181
• Chore/starlette sync by @sysid in #184

Full Changelog: v3.3.4...v3.4.1

What's Changed

• chore(deps): bump cbor2 from 5.8.0 to 5.9.0 by @dependabot[bot] in #177
• chore(deps): bump ujson from 5.11.0 to 5.12.0 by @dependabot[bot] in #176
• chore(deps): bump requests from 2.32.5 to 2.33.0 by @dependabot[bot] in #178
• chore(deps): bump cryptography from 46.0.5 to 46.0.6 by @dependabot[bot] in #179

Full Changelog: v3.3.3...v3.3.4

What's Changed

• chore(deps): bump astral-sh/setup-uv from 6 to 7 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/172
• chore(deps): bump pyopenssl from 25.3.0 to 26.0.0 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/174
• chore(deps): bump pyasn1 from 0.6.2 to 0.6.3 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/175

Full Changelog: https://github.com/sysid/sse-starlette/compare/v0.0.0...v3.3.3

What's Changed

• chore(deps): bump cryptography from 46.0.3 to 46.0.5 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/166
• chore(deps): bump filelock from 3.20.1 to 3.20.3 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/170
• Consolidate examples into 7 self-contained scripts by @sysid in https://github.com/sysid/sse-starlette/pull/171

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.3.1...v3.3.2

What's Changed

• chore: modernize project infrastructure by @sysid in https://github.com/sysid/sse-starlette/pull/169

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.3.0...v3.3.1

What's Changed

• feat: expose shutdown event for cooperative generator shutdown (#167)

• chore(deps): bump actions/checkout from 4 to 6 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/155
• chore(deps): bump virtualenv from 20.35.4 to 20.36.1 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/162
• chore(deps): bump urllib3 from 2.6.2 to 2.6.3 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/161
• chore(deps): bump cbor2 from 5.7.1 to 5.8.0 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/163
• chore(deps): bump pyasn1 from 0.6.1 to 0.6.2 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/160

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.2.0...v3.3.0

What's Changed

• [feat] Allow disabling automatic draining immediately on sigterm by @yuliy-openai in https://github.com/sysid/sse-starlette/pull/157
• feat: add enable_automatic_graceful_drain_mode() for re-enabling auto… by @sysid in https://github.com/sysid/sse-starlette/pull/158

New Contributors

• @yuliy-openai made their first contribution in https://github.com/sysid/sse-starlette/pull/157

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.1.2...v3.2.0

What's Changed

• fix: prevent watcher task leak by using threading.local (#152) by @sysid in https://github.com/sysid/sse-starlette/pull/153

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.1.1...v3.1.2

What's Changed

• fix(shutdown): detect uvicorn shutdown via signal handler introspection by @sysid in https://github.com/sysid/sse-starlette/pull/151

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.1.0...v3.1.1

What's Changed

• chore(deps): bump actions/setup-python from 3 to 6 by @dependabot[bot] in https://github.com/sysid/sse-starlette/pull/143
• Fix Issue #149: handle_exit cannot signal context-local events by @sysid in https://github.com/sysid/sse-starlette/pull/150

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.0.4...v3.1.0

What's Changed

• Add starlette to dependencies by @WOnder93 in https://github.com/sysid/sse-starlette/pull/147
• Maintenance: CI updates, Python 3.13 support, and packaging fixes by @sysid in https://github.com/sysid/sse-starlette/pull/148

New Contributors

• @WOnder93 made their first contribution in https://github.com/sysid/sse-starlette/pull/147

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.0.3...v3.0.4

What's Changed

• Security: Upgrade Starlette to 0.49.1 to address CVE-2025-62727 by @ColeMurray in https://github.com/sysid/sse-starlette/pull/144

New Contributors

• @ColeMurray made their first contribution in https://github.com/sysid/sse-starlette/pull/144

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.0.2...v3.0.3

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.0.1...v3.0.2

Full Changelog: https://github.com/sysid/sse-starlette/compare/v3.0.0...v3.0.1

What's New in v3.0.0

No breaking changes expected.

• Fix Issue #140: Replace global AppStatus.should_exit_event with context-local events by @sysid in https://github.com/sysid/sse-starlette/pull/141

Major Thread Safety Improvements

• Multi-Threading Support: SSE now works correctly in multi-threaded applications
• Multi-Loop Support: Full compatibility with multiple asyncio event loops
• Automatic Test Isolation: No more manual state resets needed in tests
• Context-Local Events: Replaced global state with context-aware event management

Development Experience

• Modern APIs: Updated to Starlette's lifespan parameter (no more deprecation warnings)
• Clean Testing: Improved pytest configuration and dependency management

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.4.1...v3.0.0

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.4.0...v2.4.1

What's Changed

• add missing test dependencies to tox.ini by @ancieg in https://github.com/sysid/sse-starlette/pull/121
• Add an JSONServerSentEvent utility based on starlette JSONResponse by @cjavad in https://github.com/sysid/sse-starlette/pull/136

New Contributors

• @ancieg made their first contribution in https://github.com/sysid/sse-starlette/pull/121
• @cjavad made their first contribution in https://github.com/sysid/sse-starlette/pull/136

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.3.6...v2.4.0

What's Changed

• Rework of documentation and examples by @sysid in https://github.com/sysid/sse-starlette/pull/134

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.3.5...v2.3.6

What's Changed

• Fix streaming examples cannot be running in python3.9 by @neolooong in https://github.com/sysid/sse-starlette/pull/123
• Fix the type annotation on client_close_handler_callable by @frankdu in https://github.com/sysid/sse-starlette/pull/130
• [Improvement] Add listen_for_disconnect in cancel_scope by @lcamhoa in https://github.com/sysid/sse-starlette/pull/131

New Contributors

• @neolooong made their first contribution in https://github.com/sysid/sse-starlette/pull/123
• @frankdu made their first contribution in https://github.com/sysid/sse-starlette/pull/130

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.3.0...v2.3.5

What's Changed

• Fix the type annotation on client_close_handler_callable by @frankdu in https://github.com/sysid/sse-starlette/pull/130

New Contributors

• @frankdu made their first contribution in https://github.com/sysid/sse-starlette/pull/130

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.3.3...v2.3.4

What's Changed

• Implement handle session close by @lcamhoa in https://github.com/sysid/sse-starlette/pull/127
• Fix streaming examples cannot be running in python3.9 by @neolooong in https://github.com/sysid/sse-starlette/pull/123

New Contributors

• @lcamhoa made their first contribution in https://github.com/sysid/sse-starlette/pull/127
• @neolooong made their first contribution in https://github.com/sysid/sse-starlette/pull/123

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.2.1...v2.3.3

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.2.0...v2.2.1

What's Changed

• chore (docs): Add documentation note and example about thread safety by @msukmanowsky in https://github.com/sysid/sse-starlette/pull/112
• chore(deps): bump codecov/codecov-action from 4 to 5 by @dependabot in https://github.com/sysid/sse-starlette/pull/115
• Include workaround for pytest SSE errors in README.md by @arnoan in https://github.com/sysid/sse-starlette/pull/118
• refactoring of tests
• make uvicorn dependency optional

New Contributors

• @msukmanowsky made their first contribution in https://github.com/sysid/sse-starlette/pull/112
• @dependabot made their first contribution in https://github.com/sysid/sse-starlette/pull/115
• @arnoan made their first contribution in https://github.com/sysid/sse-starlette/pull/118

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.1.3...v2.2.0

What's Changed

• Cleanup unused loops by @truh in https://github.com/sysid/sse-starlette/pull/100
• Update link to new spec by @YummyBacon5 in https://github.com/sysid/sse-starlette/pull/88
• Change default cache-control response to 'no-store' by @ahupp in https://github.com/sysid/sse-starlette/pull/105

New Contributors

• @truh made their first contribution in https://github.com/sysid/sse-starlette/pull/100
• @YummyBacon5 made their first contribution in https://github.com/sysid/sse-starlette/pull/88
• @ahupp made their first contribution in https://github.com/sysid/sse-starlette/pull/105

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.1.0...v2.1.3

What's Changed

• Cleanup unused loops by @truh in https://github.com/sysid/sse-starlette/pull/100
• Update link to new spec by @YummyBacon5 in https://github.com/sysid/sse-starlette/pull/88

New Contributors

• @truh made their first contribution in https://github.com/sysid/sse-starlette/pull/100
• @YummyBacon5 made their first contribution in https://github.com/sysid/sse-starlette/pull/88

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.1.0...v2.1.2

What's Changed

• fix: honor custom separator in ping sse by @fancyweb in https://github.com/sysid/sse-starlette/pull/91
• Avoid calling decode() and allocating strings for logging if said log lines will no-op anyways. by @judilsteve in https://github.com/sysid/sse-starlette/pull/93
• Refac/async test by @sysid in https://github.com/sysid/sse-starlette/pull/94

New Contributors

• @fancyweb made their first contribution in https://github.com/sysid/sse-starlette/pull/91
• @judilsteve made their first contribution in https://github.com/sysid/sse-starlette/pull/93

Full Changelog: https://github.com/sysid/sse-starlette/compare/v2.0.0...v2.1.0

Backward Incompatibility:

Exceptions raising out of task groups are nested inside an ExceptionGroup (seeanyio 4.0.0: https://anyio.readthedocs.io/en/stable/versionhistory.html)

What's Changed

• Optional deps by @sysid in https://github.com/sysid/sse-starlette/pull/87
• [#89] Add SSE Send Timeout by @blodow in https://github.com/sysid/sse-starlette/pull/90

New Contributors

• @blodow made their first contribution in https://github.com/sysid/sse-starlette/pull/90

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.8.3...v2.0.0

What's Changed

• fix: typing by @sysid in https://github.com/sysid/sse-starlette/pull/82

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.8.1...v1.8.2

What's Changed

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.8.0...v1.8.1

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.6.4...v1.6.5

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.6.3...v1.6.4

What's Changed

• fix: there should be only one exit event by @metakot in https://github.com/sysid/sse-starlette/pull/57

New Contributors

• @metakot made their first contribution in https://github.com/sysid/sse-starlette/pull/57

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.6.0...v1.6.1

What's Changed

• Allow Usage without Async Generators by @ejlangev in https://github.com/sysid/sse-starlette/pull/56

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.5.0...v1.6.0

What's Changed

• feat: Send pings as comments by default by @paxcodes in https://github.com/sysid/sse-starlette/pull/53
• Fix race condition between ping and stream_response by @ejlangev in https://github.com/sysid/sse-starlette/pull/55

New Contributors

• @ejlangev made their first contribution in https://github.com/sysid/sse-starlette/pull/55

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.3.2...v1.5.0

What's Changed

• feat: Send pings as comments by default by @paxcodes in https://github.com/sysid/sse-starlette/pull/53

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.3.2...v1.4.0

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.3.2...v1.3.4

Full Changelog: https://github.com/sysid/sse-starlette/compare/v1.3.2...v1.3.3

• replace asyncio.sleep() with anyio.sleep