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IOLoop behaves in an unexpected manner when <code>asycnio.CancelledError</code> is raised.

Status: Open.

#3537 In tornadoweb/tornado;

· templeprice opened on Aug 28, 2025

simple_httpclient: Improve error reporting on connect timeout

Status: Open.

#3522 In tornadoweb/tornado;

· bdarnell opened on Jul 26, 2025

Support for free-threaded CPython

Status: Open.

#3501 In tornadoweb/tornado;

· m-clare opened on May 20, 2025

Optional request fields that should always have values

Status: Open.

#3500 In tornadoweb/tornado;

· thijsvandien opened on May 15, 2025

web: New XSRF/CSRF protection: <code>Sec-Fetch-Site</code>

Status: Open.

#3495 In tornadoweb/tornado;

· bdarnell opened on May 7, 2025

http server occasionally experiences high latency

investigation

Status: Open.

#3419 In tornadoweb/tornado;

· shaxiaozz opened on Sep 3, 2024

<code>Subprocess.wait_for_exit</code> never resolves if process terminated before it is called

process

Status: Open.

#3364 In tornadoweb/tornado;

· meffmadd opened on Feb 29, 2024

Tornado Websocket write message performance degradation when binary is False

websocket

Status: Open.

#3362 In tornadoweb/tornado;

· lalnarik opened on Feb 19, 2024

Send 204 as HTTPError

web

Status: Open.

#3360 In tornadoweb/tornado;

· pawciobiel opened on Feb 16, 2024

iostream: SSL logging is too noisy

iostream

Status: Open.

#3347 In tornadoweb/tornado;

· bdarnell opened on Nov 14, 2023

Possible leak when exception is raised in inner coroutine

gen

Status: Open.

#3346 In tornadoweb/tornado;

· ian-h-chamberlain opened on Nov 8, 2023

httpclient_test: test_destructor_log is flaky on windows

httpclient

Status: Open.

#3326 In tornadoweb/tornado;

· bdarnell opened on Sep 27, 2023