tornadoweb / tornadoweb/tornado
tcpclient: Improper close of IOStream
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tcpclient
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Description
Hello,
I am using the latest git master. This happens when the IOLoop is busy. Seems simlar to #32 and #1901:
DEBUG:tornado.general:Error deleting fd from IOLoop
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/tornado/gen.py", line 1054, in run
yielded = self.gen.send(value)
File "/usr/local/lib/python3.5/dist-packages/tornado/tcpclient.py", line 175, in connect
raise gen.Return(stream)
tornado.gen.Return: <tornado.iostream.SSLIOStream object at 0x7f0e70dba3c8>
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.5/dist-packages/tornado/ioloop.py", line 739, in remove_handler
self._impl.unregister(fd)
FileNotFoundError: [Errno 2] No such file or directory
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with tornado/tcpclient.py at connect and follow the cleanup path into tornado/ioloop.py remove_handler, using the reported busy-IOLoop condition and related issues #32 and #1901 as context. Reproduce the FileNotFoundError involving SSLIOStream, then add regression coverage and confirm that closing the stream no longer logs an error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- networking
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 42/100