Try to get automatic WSL2 IP for Xdebug and PhpStorm

Question

I configured Xdebug with PhpStorm in a WSL2 Debian instance.

Here is the configuration of my xdebug.ini :

xdebug.mode=debug
xdebug.start_with_request=yes
xdebug.discover_client_host=false
xdebug.client_host=${WSL_IP}
xdebug.client_port=9003
xdebug.idekey=PHPSTORM

the line xdebug.client_host=${WSL_IP} is in another file : .bash_aliases

export WSL_IP=$(grep -E '^nameserver' /etc/resolv.conf | awk '{print $2}')

WSL_IP contain the IP of my vEthernet WSL.

In short I used this solution for dynamically get the current IP of WSL every time I reboot my computer.

The main problem is ${WSL_IP} doesn't return the value at the line xdebug.client_host=${WSL_IP}

I even try to write in this way xdebug.client_host=$(echo $WSL_IP) but it didn't work.

So my solution was to get the value of $WSL_IP xdebug.client_host=${WSL_IP} -> xdebug.client_host=[IP Value]

And it works in this way but the problem is every time the WSL IP changes, I have to update the file config in xdebug.ini with the new IP value.

Do you have a solution of why ${WSL_IP} doesn't work in xdebug.ini?

Thanks in advance for your help.

Answer 1

From Xdebug 3.2 you can use xdebug://nameserver as value for xdebug.client_host in this situation: https://bugs.xdebug.org/bug_view_page.php?bug_id=00002079