Get err_connection_refused accessing django running on wsl2 from Windows but can curl from Windows terminal

问题

I got the err_connection_refused when trying to accessing django running on wsl2 (http://localhost:8000) from Windows but when I use curl http://localhost:8000 from Windows terminal bash, it's working fine. I have tried to add a new firewall inbound rule for port 8000 but it's still not working. Is there anything else I need to take care of.

Thanks a lot

回答1:

Seems like a forwarding problem. WSL2's interface is NAT'd, whereas WSL1 was bridged by default.

Some ideas:

• Does the problem resolve if you do a wsl --shutdown and then restart the WSL2 session? If so, try disabling Windows' Fast Startup. I already had Fast Startup disabled due to a different (non-WSL issue) on my system, so that could be related to why I am not able to reproduce.

• Along the same lines, do you Hibernate instead of powering off? In that case, a wsl --shutdown might resolve as well.

• For some additional ideas, see this github issue. There are some suggestions on services that might be needed. (Side question - Are you running Windows Home or Professional?)

• Is there any chance that your Windows hosts file (e.g. c:\windows\system32\drivers\etc\hosts) points localhost to an IP other than 127.0.0.1? If I attempt to access via my local Windows IP address, rather than 127.0.0.1 or localhost, I get an ERR_CONNECTION_REFUSED as well.

• Since you were looking at the firewall rules, maybe look at a forwarding rule instead of just an inbound allow?

• If all else fails, try exporting/backing up the WSL2 session (see wsl --export), then import it in as a new WSL1 session. See if it works there.

On my WSL2/Ubuntu 20.04 system, I attempted to reproduce (but haven't been able to yet) with the following steps:

mkdir -p ~/src/dj-test
cd ~/src/dj-test
python3 -m venv dj
source dj/bin/activate
pip install Django
django-admin startproject config .
python manage.py runserver

(although I used activate.fish since I'm running the fish shell)

From Vivaldi web browser in Windows, accessed localhost:8000, which returned "The install worked successfully! Congratulations! ..."

curl under Powershell Core worked as well.

来源：https://stackoverflow.com/questions/63452108/get-err-connection-refused-accessing-django-running-on-wsl2-from-windows-but-can