tornadoweb / tornadoweb/tornado

WebSocket connection closed on long messages

Open
#608 10 comments 2 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

websocket
Dominant language
Python
Stars
22.2k
Forks
5.6k
Avg merge
3h 42m
Merged PRs (30d)
16

Description

I've encountered problems sending somewhat large messages (more than 4k) from Firefox 18, and having the connection closed. The client reports error 1006 (which is just abnormal termination). Nothing is logged on the server.

Using the same client code and a Node.js server I'm not getting the same behavior, which is leading me to believe it's Tornado.

I don't have a repeatable case, but wanted to at least note the issue in case anyone else encounters it, as it was hard to determine the source. Oddly this did not happen on localhost, but when connecting to a remote server.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

The report does not name a file, test, or reproducible entry point. Start by reproducing the Firefox 18 failure with messages over 4k on a remote server, then inspect Tornado's WebSocket handling and logging around abnormal closure. Done means identifying and fixing the cause, with a regression test or documented reproduction if possible.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
backend, networking
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.