Server message: Session expired. Please refresh this webpage.

[mikoim]

Describe the issue

Once upgrade to 0.11.3.0, gdbgui always says "Server message: Session expired. Please refresh this webpage.". even if refresh browser, it repeated again and gdbgui does not accept any commands. I tried to recreate the virtual environment and install gdbgui again, but the issue has still happened.

• Browser

Server message: Session expired. Please refresh this webpage.

• Console

gdbgui --debug
failed to initialize socketio app with async mode "eventlet". Continuing with async mode "threading".
View gdbgui at http://127.0.0.1:5000
exit gdbgui by pressing CTRL+C
WebSocket transport not available. Install eventlet or gevent and gevent-websocket for improved performance.
 * Serving Flask app "gdbgui.backend" (lazy loading)
 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
failed to initialize socketio app with async mode "eventlet". Continuing with async mode "threading".
View gdbgui at http://127.0.0.1:5000
exit gdbgui by pressing CTRL+C
WebSocket transport not available. Install eventlet or gevent and gevent-websocket for improved performance.
 * Debugger is active!
 * Debugger PIN: 178-458-305
127.0.0.1 - - [28/Apr/2018 00:50:27] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:50:27] "GET /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7p6rG HTTP/1.1" 200 -
gdbgui.backend - WARNING - Recieved invalid csrf token 99b7f9757c6f56ae283ef86b38327357881aa74c (expected None)
127.0.0.1 - - [28/Apr/2018 00:50:28] "POST /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7p6ts&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:50:28] "GET /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7p6tu&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:50:33] "POST /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7p895&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:50:33] "GET /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7p6vD&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:50:33] "GET /get_last_modified_unix_sec?path=%2FSaturn%2FBitZeny%2Fbitzeny%2Fsrc%2Fqt%2Fbitzeny-qt&_=1524844227848 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:50:53] "POST /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7pD5X&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:50:53] "GET /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7p89A&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:51:19] "POST /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7pJRl&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:51:19] "GET /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7pD5a&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:51:45] "POST /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7pPo0&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -
127.0.0.1 - - [28/Apr/2018 00:51:45] "GET /socket.io/?csrf_token=99b7f9757c6f56ae283ef86b38327357881aa74c&gdbpid=0&EIO=3&transport=polling&t=MC7pJRp&sid=b6e29f80914f4cfc9ba9154a9700e902 HTTP/1.1" 200 -

Steps to replicate

1. Run gdbgui --debug
2. The browser is opened automatically.
3. Server message: Session expired. Please refresh this webpage. is printed on console_container.

Describe your environment

• Operating system and version: Linux x.local 4.15.17-300.fc27.x86_64 Dev/cs01/general improvements #1 SMP Thu Apr 12 18:19:17 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
• gdbgui version (gdbgui -v): 0.11.3.0
• gdb version (gdb -v): 8.0.1-36.fc27
• browser: Google Chrome 66.0.3359.117 (Official Build) (64-bit), Firefox 60.0b15
• python packages (pip freeze):

certifi==2018.4.16
click==6.7
Flask==1.0
Flask-Compress==1.4.0
Flask-SocketIO==2.9.6
gdbgui==0.11.3.0
gevent==1.2.2
greenlet==0.4.13
itsdangerous==0.24
Jinja2==2.10
MarkupSafe==1.0
pygdbmi==0.8.2.0
Pygments==2.2.0
python-engineio==2.1.0
python-socketio==1.9.0
six==1.11.0
Werkzeug==0.14.1

[cs01]

Thanks for reporting. I was able to reproduce and I believe I have this fixed in gdbgui version 0.11.3.1.

Try running

pip install gdbgui --upgrade

and let me know if it works (or just close this issue).

What happened was Flask, a dependency of gdbgui, was upgraded with breaking changes. pip uses the latest version unless told to do otherwise, so I limited the version gdbgui uses to the last known good version of Flask (0.12.2).

[kriscory]

I think this actually is caused by SocketIO. It added the ability to manage its own session by making a copy of the one managed by Flask. The copy didn't inherit from dict properly and caused get to fail. SocketIO made a fix for this in miguelgrinberg/Flask-SocketIO@39649c8.

Installing the latest version of flask_socketio and flask seem work.
pip install flask==1.0.2 flask_socketio==3.3.2

However, it doesn't look like you modify the session within the SocketIO context, so you may want to disable SocketIO managed sessions all together by adding manage_session=False to the SocketIO instantiation.

[cs01]

@kriscory thanks for the info! I created a new issue to see if this helps: #271

[kb2ma]

I also was experiencing this issue with Python 3. I had these Flask versions installed:

Package	Version
Flask	1.1.1
Flask-SocketIO	2.9.6

I upgraded Flask-SocketIO via pip3 to the latest, v4.3.0. gdbgui worked after that.