Debugging Error Xdebug: [Step Debug] Could not connect to debugging client

[stefnats]

Hello,

i'm using this container with the following config (devcontainer.json):

// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
// https://github.com/microsoft/vscode-dev-containers/tree/v0.191.0/containers/php
{
	"name": "PHP",
	"build": {
		"dockerfile": "Dockerfile",
		"args": { 
			// Update VARIANT to pick a PHP version: 8, 8.0, 7, 7.4, 7.3
			"VARIANT": "8",
			"NODE_VERSION": "lts/*"
		}
	},
	
	// Set *default* container specific settings.json values on container create.
	"settings": { 
		"php.validate.executablePath": "/usr/local/bin/php"
	},

	// Add the IDs of extensions you want installed when the container is created.
	"extensions": [
		"felixfbecker.php-debug",
		"bmewburn.vscode-intelephense-client",
		"mrmlnc.vscode-apache",
		"calebporzio.better-phpunit"
	],

	// Use 'forwardPorts' to make a list of ports inside the container available locally.
	// "forwardPorts": [8080],

	// Use 'portsAttributes' to set default properties for specific forwarded ports. More info: https://code.visualstudio.com/docs/remote/devcontainerjson-reference.
	"portsAttributes": {
		"8000": {
			"label": "Hello Remote World",
			"onAutoForward": "notify"
		}
	},

	// Use 'otherPortsAttributes' to configure any ports that aren't configured using 'portsAttributes'.
	// "otherPortsAttributes": {
	// 		"onAutoForward": "silent"
	// },

	// Use 'postCreateCommand' to run commands after the container is created.
	// "postCreateCommand": "sudo chmod a+x \"$(pwd)\" && sudo rm -rf /var/www/html && sudo ln -s \"$(pwd)\" /var/www/html"

	// Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
	"remoteUser": "vscode"
}

When i run any php process i receive this error

Xdebug: [Step Debug] Could not connect to debugging client. Tried: localhost:9000 (through xdebug.client_host/xdebug.client_port) :-(

Dockerfile is still as is: https://github.com/microsoft/vscode-remote-try-php/blob/67e233b925a64f90a46092879ed82b9e6d89f19e/.devcontainer/Dockerfile

Am i doing something wrong? Thanks in advance!

[ikhvjs]

Same issue with the default preconfig image of PHP

devcontainer.json

// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
// https://github.com/microsoft/vscode-dev-containers/tree/v0.194.3/containers/php
{
	"name": "PHP",
	"build": {
		"dockerfile": "Dockerfile",
	},
	"settings": { 
		"php.validate.executablePath": "/usr/local/bin/php"
	},
	"extensions": [
		"felixfbecker.php-debug",
		"bmewburn.vscode-intelephense-client",
		"mrmlnc.vscode-apache"
	],
	"forwardPorts": [8080],
	"remoteUser": "vscode"
}

Dockerfile

ARG VARIANT="7.4"
FROM mcr.microsoft.com/vscode/devcontainers/php:0-${VARIANT}

[mabasic]

This is normal when not debugging the application. By default xdebug listens for a "debugging" connection. If you are not debugging, then it displays the warning that you are seeing. When you try running your application with F5 (debugging mode) then you will not see that message.

[ikhvjs]

@mabasic , I try to F5 to debug. I can see the server is running in remote container localhost:9003 and I try to browse the page in local localhost:9003, but there is no response.

I also try in terminal with telnet localhost 9003 in local and there is no connection as well.

[mabasic]

When you start debugging in vs code, you should open the browser to the port on which your application is running, not the port of the debugger.

Set a breakpoint in vscode, make a request to your application so that the breakpoint is triggered and you will see that the application execution is paused and that you can see the current variables in vsvode.

[ikhvjs]

@mabasic , I try your suggestion. when you run F5 and enter the debugging mode, you can see your runing process is on the port 9003. I try to browse both port 8080 and 9003, but I cannot reach both of them.
You can see the ports from the ports tab of VSCODE terminal panel below:

[mabasic]

See the readme for debugging instructions. I think that you need to start the server first.

[ikhvjs]

@mabasic , Thanks. I manage to solve the issue. It turns out that I use the default launch.json from VScode and it doesn' work. I try to copy the launch.json of the repo and it works fine.