tornadoweb/tornado

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Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.

Stars: 22.2k
Forks: 5.6k
Open beginner issues: 0
Indexed issues: 182
Avg merge: 3h 42m
Merged PRs (30d): 16

Dominant language: Python
License: Apache-2.0
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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182 open issues indexed

Soft-deprecate and reimplement IOStream.read_until_close Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

tornadoweb/tornado#3728 · Opened Sep 15, 2026
decode_signed_value raises ValueError for authenticated malformed timestamps Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

tornadoweb/tornado#3701 · 1 comment · Opened Aug 4, 2026
Add support for new HTTP standard method QUERY Open

Difficulty 3/5 1-2 days Newbie friendliness 64/100

tornadoweb/tornado#3651 · 2 comments · Opened Jun 29, 2026
Getting the templated path that led to an handler Open

Difficulty 4/5 3-5 days Newbie friendliness 50/100

tornadoweb/tornado#3616 · 2 comments · Opened Apr 30, 2026
Socket leak in TCPClient.connect when TLS handshake times out Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

tornadoweb/tornado#3614 · 1 comment · Opened Apr 9, 2026
new awesome list for tornado & social media presence Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

tornadoweb/tornado#3605 · 2 comments · 1 reaction · Opened Apr 3, 2026
Support for __html__ method and marking variables as safe to use in templates to avoid escaping Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

tornadoweb/tornado#3583 · Opened Mar 8, 2026
WebSocketClosedError Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

tornadoweb/tornado#3565 · Opened Dec 16, 2025
x-forwarded-for doesn't work Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tornadoweb/tornado#3561 · Opened Dec 12, 2025
GzipDecompressor silently loses data from concatenated gzip members Open

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

tornadoweb/tornado#3560 · Opened Dec 12, 2025
IOLoop behaves in an unexpected manner when `asycnio.CancelledError` is raised. Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

tornadoweb/tornado#3537 · 1 comment · Opened Aug 28, 2025
simple_httpclient: Improve error reporting on connect timeout Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tornadoweb/tornado#3522 · Opened Jul 26, 2025
Support for free-threaded CPython Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

tornadoweb/tornado#3501 · 20 comments · 2 reactions · Opened May 20, 2025
web: New XSRF/CSRF protection: `Sec-Fetch-Site` Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

tornadoweb/tornado#3495 · 10 comments · Opened May 7, 2025
http server occasionally experiences high latency Open

investigation

Difficulty 4/5 3-5 days Newbie friendliness 25/100

tornadoweb/tornado#3419 · 5 comments · Opened Sep 3, 2024
`Subprocess.wait_for_exit` never resolves if process terminated before it is called Open

process

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tornadoweb/tornado#3364 · 3 comments · Opened Feb 29, 2024
Tornado Websocket write message performance degradation when binary is False Open

websocket

Difficulty 4/5 3-5 days Newbie friendliness 30/100

tornadoweb/tornado#3362 · 2 comments · Opened Feb 19, 2024
Send 204 as HTTPError Open

web

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tornadoweb/tornado#3360 · Opened Feb 16, 2024
iostream: SSL logging is too noisy Open

iostream

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tornadoweb/tornado#3347 · Opened Nov 14, 2023
Possible leak when exception is raised in inner coroutine Open

gen

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tornadoweb/tornado#3346 · 1 comment · Opened Nov 8, 2023
httpclient_test: test_destructor_log is flaky on windows Open

httpclient

Difficulty 4/5 3-5 days Newbie friendliness 25/100

tornadoweb/tornado#3326 · Opened Sep 27, 2023
support IOLoop.close() when called after asyncio.run Open

ioloop

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tornadoweb/tornado#3292 · 1 comment · Opened Jul 6, 2023
locale doesn't preserve territory and doesn't do error handling Open

locale

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tornadoweb/tornado#3279 · Opened Jun 11, 2023
Multiple AsyncHTTPClient objects created for one asyncio event loop Open

httpclient

Difficulty 4/5 3-5 days Newbie friendliness 38/100

tornadoweb/tornado#3229 · 7 comments · Opened Feb 7, 2023
Provide a `host` application setting Open

web

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tornadoweb/tornado#3205 · 7 comments · Opened Dec 9, 2022
Add a decorator that normalizes the request duration to prevent enumeration Open

web

Difficulty 5/5 Over a week Newbie friendliness 35/100

tornadoweb/tornado#3190 · 2 comments · Opened Sep 29, 2022
UnicodeDecodeError in curl_httpclient's `_curl_debug()` Open

httpclient

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

tornadoweb/tornado#3183 · 1 comment · Opened Sep 4, 2022
CurlAsyncHTTPClient hangs Open

httpclient

Difficulty 4/5 3-5 days Newbie friendliness 25/100

tornadoweb/tornado#3175 · 2 comments · Opened Aug 15, 2022
CurlAsyncHTTPClient doesn't seem to handle the requests in parallel Open

httpclient investigation

Difficulty 4/5 3-5 days Newbie friendliness 25/100

tornadoweb/tornado#3131 · 4 comments · 1 reaction · Opened Apr 1, 2022
Try to skip getaddrinfo if "host" is already an IP Open

netutil

Difficulty 3/5 1-2 days Newbie friendliness 42/100

tornadoweb/tornado#3113 · 9 comments · Opened Feb 8, 2022
"tornado.curl_httpclient.CurlError: HTTP 599: Failed writing header" after updating to python 3.10 on alpine 3.15 Open

httpclient investigation

Difficulty 4/5 3-5 days Newbie friendliness 30/100

tornadoweb/tornado#3091 · 1 comment · Opened Dec 13, 2021
relative URIs in Location header Open

web

Difficulty 4/5 3-5 days Newbie friendliness 38/100

tornadoweb/tornado#3067 · 4 comments · Opened Sep 29, 2021
simple_httpclient: Timeout after redirect not raised properly Open

httpclient

Difficulty 3/5 1-2 days Newbie friendliness 35/100

tornadoweb/tornado#3064 · 6 comments · Opened Sep 18, 2021
wsgi: Uncaught exception Open

wsgi

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

tornadoweb/tornado#3055 · 2 comments · Opened Aug 31, 2021
Any particular reason why calls to _handle_request_exception(e) or on_finish() are not being awaited ? Open

web

Difficulty 4/5 3-5 days Newbie friendliness 30/100

tornadoweb/tornado#3038 · 14 comments · Opened Jun 16, 2021
Allow resetting the XSRF cookie/token Open

web

Difficulty 4/5 3-5 days Newbie friendliness 45/100

tornadoweb/tornado#3026 · 3 comments · Opened May 6, 2021
Cannot stop multi-cpu Tornado service on FreeBSD Open

process

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tornadoweb/tornado#3019 · 4 comments · Opened Apr 28, 2021
WaitIterator constructor typing is not match with documentation Open

gen typing

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

tornadoweb/tornado#3001 · 1 comment · Opened Mar 18, 2021
Brotli compression Open

web

Difficulty 5/5 Over a week Newbie friendliness 25/100

tornadoweb/tornado#2999 · 2 comments · Opened Mar 15, 2021
StaticFileHandler block the whole application when downloading a large file Open

web

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tornadoweb/tornado#2997 · 8 comments · Opened Mar 2, 2021
self.request.get_ssl_certificate() getting error in WebSocketHandler Open

websocket

Difficulty 4/5 3-5 days Newbie friendliness 25/100

tornadoweb/tornado#2994 · 2 comments · Opened Feb 20, 2021
fork_processes() leaves child running without parent process after too many child restarts of other children Open

process

Difficulty 3/5 1-2 days Newbie friendliness 38/100

tornadoweb/tornado#2993 · 1 comment · 1 reaction · Opened Feb 19, 2021
Supporting a series of buffers in `BaseIOStream.write` Open

iostream

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tornadoweb/tornado#2991 · 1 comment · Opened Feb 16, 2021
asyncio task cancellations are orphaned Open

web

Difficulty 4/5 3-5 days Newbie friendliness 35/100

tornadoweb/tornado#2990 · 5 comments · 1 reaction · Opened Feb 11, 2021
Using loop.sock_recv_into & loop.sock_sendall Open

iostream

Difficulty 5/5 Over a week Newbie friendliness 20/100

tornadoweb/tornado#2985 · 5 comments · Opened Jan 29, 2021
strange "Timeout during request" error with this url Open

httpclient

Difficulty 3/5 1-2 days Newbie friendliness 45/100

tornadoweb/tornado#2984 · 4 comments · Opened Jan 29, 2021
Feature request: Cookie prefixes Open

web

Difficulty 5/5 Over a week Newbie friendliness 35/100

tornadoweb/tornado#2968 · 4 comments · Opened Dec 30, 2020
on_close called before open on short-lived WebSocket connections Open

websocket

Difficulty 4/5 3-5 days Newbie friendliness 38/100

tornadoweb/tornado#2958 · 3 comments · Opened Nov 22, 2020
Serve pre-compressed files with StaticFileHandler Open

web

Difficulty 4/5 3-5 days Newbie friendliness 28/100

tornadoweb/tornado#2957 · 1 comment · Opened Nov 20, 2020
Highlight stream_request_body in documentation Open

docs web

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

tornadoweb/tornado#2952 · 4 comments · Opened Nov 10, 2020

tornadoweb/tornado

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