I can't get WSL 2 Ubuntu + xdebug + VSC to work

[bflu]

Hi, for the first time using Warden I have some problems with xdebug setup.

Environment:
Warden 0.14.2
Windows 11 + WSL 2 Ubuntu 22.04.3 LTS
Visual Studio Code with WSL and PHP Debug extensions

.env

WARDEN_ENV_NAME=magento22
WARDEN_ENV_TYPE=magento2
WARDEN_WEB_ROOT=/

TRAEFIK_DOMAIN=magento22.test
TRAEFIK_SUBDOMAIN=app

WARDEN_DB=1
WARDEN_ELASTICSEARCH=1
WARDEN_OPENSEARCH=0
WARDEN_ELASTICHQ=1
WARDEN_VARNISH=1
WARDEN_RABBITMQ=1
WARDEN_REDIS=1

ELASTICSEARCH_VERSION=7.17
MYSQL_DISTRIBUTION=mysql
MYSQL_DISTRIBUTION_VERSION=5.6
NODE_VERSION=12
COMPOSER_VERSION=1.10.12
PHP_VERSION=7.1
PHP_XDEBUG_3=0
RABBITMQ_VERSION=3.9
REDIS_VERSION=7.0
VARNISH_VERSION=7.1

WARDEN_SYNC_IGNORE=

WARDEN_ALLURE=0
WARDEN_SELENIUM=0
WARDEN_SELENIUM_DEBUG=0
WARDEN_BLACKFIRE=0
WARDEN_SPLIT_SALES=0
WARDEN_SPLIT_CHECKOUT=0
WARDEN_TEST_DB=0
WARDEN_MAGEPACK=0

BLACKFIRE_CLIENT_ID=
BLACKFIRE_CLIENT_TOKEN=
BLACKFIRE_SERVER_ID=
BLACKFIRE_SERVER_TOKEN=

.vscode/launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Listen for Xdebug",
            "type": "php",
            "request": "launch",
            "port": 9000,
            "pathMappings": {
                "/var/www/html": "${workspaceRoot}"
            }
        }
    ]
}

I have been using Warden on macOS and Ubuntu and I have never had any issues with xdebug configuration. This time I had to use Windows and I ran out of ideas. No matter what I do, I can't stop at any breakpoint.

In VSC I connect to WSL with WSL extension. I have PHP Debug installed on WSL. When I press "Listen for Xdebug" button, I can see port 9000 being used both on WSL and host. I also tried it without WSL extension with no effect. Earlier I played with ports and firewall settings, no effect too. I wonder if it's something wrong with pathMappings, but it's only a thought.

I would be grateful if you have any ideas

[bflu]

I just found out I had to add "hostname": "localhost" in .vscode/launch.json, so it should look like this:

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Listen for Xdebug",
            "type": "php",
            "request": "launch",
            "port": 9000,
            "pathMappings": {
                "/var/www/html": "${workspaceRoot}"
            },
            "hostname": "localhost"
        }
    ]
}

Everything works fine now