How to configure DDS and DevTools for special target device

[nguyenlkdn]

When attempting to connect to the VM service URI output by the Flutter engine in the context of a custom embedder, users may encounter the following error:

This VM does not have a registered Dart Development Service (DDS) instance and is not currently serving Dart DevTools.

Platform:

• IMX8QXP
• IMX-WAYLAND

Flutter elinux release 3.13.0

Flutter target devices:

flutter-elinux devices 4 connected devices:

Linux (desktop) • linux • linux-x64 • Ubuntu 20.04.6 LTS 5.15.0-101-generic eLinux (desktop) • elinux-wayland • flutter-tester • Ubuntu 20.04.6 LTS 5.15.0-101-generic eLinux (desktop) • elinux-x11 • flutter-tester • Ubuntu 20.04.6 LTS 5.15.0-101-generic > eLinux (mobile) • gridania-pvt1 • flutter-tester • ion-imx-wayland

Step to Reproduce:

1. flutter-elinux create sample
2. cd sample
3. flutter-elinux pub get
4. flutter-elinux run -d gridania-pvt1 --profile -v

[ +32 ms] Unable to locate an Android SDK. [ +10 ms] executing: uname -m [ +2 ms] Exit code 0 from: uname -m [ ] x86_64 [ +89 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update. [ ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update. [ ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update. [ ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update. [ ] Artifact Instance of 'LegacyCanvasKitRemover' is not required, skipping update. [ ] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update. [ ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update. [ ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update. [ ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update. [ ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update. [ ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update. [ ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update. [ +5 ms] Artifact Instance of 'ELinuxEngineArtifacts' is not required, skipping update. [ ] Artifact Instance of 'MaterialFonts' is not required, skipping update. [ ] Artifact Instance of 'GradleWrapper' is not required, skipping update. [ ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update. [ ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update. [ ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update. [ ] Artifact Instance of 'LegacyCanvasKitRemover' is not required, skipping update. [ ] Artifact Instance of 'FlutterSdk' is not required, skipping update. [ ] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update. [ ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update. [ ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update. [ ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update. [ ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update. [ ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update. [ ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update. [ ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update. [ ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update. [ ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update. [ ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update. [ ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update. [ ] Artifact Instance of 'FontSubsetArtifacts' is not required, skipping update. [ ] Artifact Instance of 'PubDependencies' is not required, skipping update. [ +5 ms] executing: ping -w 500 -c 1 192.168.7.1 [ +11 ms] PING 192.168.7.1 (192.168.7.1) 56(84) bytes of data. 64 bytes from 192.168.7.1: icmp_seq=1 ttl=64 time=0.309 ms 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.309/0.309/0.309/0.000 ms [ +3 ms] Skipping pub get: version match. [ +36 ms] Generating /home/saydi/workdir/00_Sources/community/flutter/sample/android/app/src/main/java/io/flutter/plugins/GeneratedPluginRegistrant.java [ +19 ms] Launching lib/main.dart on eLinux in profile mode... [ +1 ms] Uninstall sample from gridania-pvt1. [ ] executing: ssh [email protected] rm -rf "/tmp/sample" [ +229 ms] Uninstallation Success [ +2 ms] Install sample (build/elinux/arm64/profile/bundle) to gridania-pvt1 [ ] executing: scp -r build/elinux/arm64/profile/bundle [email protected]:/tmp/sample [+2970 ms] Installation Success [ +1 ms] Launch sample.name on gridania-pvt1 [ +317 ms] VM Service URL on device: http://127.0.0.1:43621/d4EXYYZKy2c=/ [ ] executing: ssh -o ExitOnForwardFailure=yes -L 127.0.0.1:43621:127.0.0.1:43621 [email protected]

Result on Web-browser: debug and profile modes are the same result

[nguyenlkdn]

Already tried start VM Dart on Host PC to connecting VM Server URL

[HidenoriMatsubayashi]

Please ensure that you have set forwardPort and disable all proxy settings.

See https://github.com/sony/flutter-elinux/wiki/Remote-target-devices#flutter_custom_devicesjson-example

[nguyenlkdn]

Please ensure that you have set forwardPort and disable all proxy settings.

See https://github.com/sony/flutter-elinux/wiki/Remote-target-devices#flutter_custom_devicesjson-example

{
  "custom-devices": [
    {
      "id": "gridania-pvt1",
      "label": "Gridania Pvt 1",
      "sdkNameAndVersion": "ion-imx-wayland",
      "enabled": true,
      "platform": "arm64",
      "backend": "wayland",
      "ping": [
        "ping", "-w", "500", "-c", "1", "192.168.7.1"
      ],
      "pingSuccessRegex": "ttl=",
      "install": [
        "scp", "-r", "${localPath}", "[email protected]:/tmp/${appName}"
      ],
      "uninstall": [
        "ssh", "[email protected]", "rm -rf \"/tmp/${appName}\""
      ],
      "runDebug": [
        "ssh", "[email protected]", "XDG_RUNTIME_DIR=/run/user/0 /tmp/${appName}/${appName} -b ."
      ],
      "stopApp": [
        "ssh", "[email protected]",
        "ps aux | grep \"/tmp/${appName}\" | grep -v grep | awk '{print $2}' | xargs kill"
      ],
      "forwardPort": [
        "ssh", "-o", "ExitOnForwardFailure=yes",
        "-L", "127.0.0.1:${hostPort}:127.0.0.1:${devicePort}", "[email protected]"
      ],
      "forwardPortSuccessRegex": "Linux"
    }
  ]
}

I have no any proxy configured now.

saydi@Precision-3571:~$ echo "$http_proxy"

saydi@Precision-3571:~$ echo "$https_proxy"

saydi@Precision-3571:~$ env | grep proxy
saydi@Precision-3571:~$ 

I connect with my target board over Ethernet Port

Target: 192.168.7.1
Host: 192.168.7.2

Look at my logs:

trant.java
[ +19 ms] Launching lib/main.dart on eLinux in profile mode...
[ +1 ms] Uninstall sample from gridania-pvt1.
[ ] executing: ssh [email protected] rm -rf "/tmp/sample"
[ +229 ms] Uninstallation Success
[ +2 ms] Install sample (build/elinux/arm64/profile/bundle) to gridania-pvt1
[ ] executing: scp -r build/elinux/arm64/profile/bundle [email protected]:/tmp/sample
[+2970 ms] Installation Success
[ +1 ms] Launch sample.name on gridania-pvt1
[ +317 ms] VM Service URL on device: http://127.0.0.1:43621/d4EXYYZKy2c=/
[ ] executing: ssh -o ExitOnForwardFailure=yes -L 127.0.0.1:43621:127.0.0.1:43621 [email protected]

PortForward already corrected.

[nguyenlkdn]

$ flutter-elinux run -d raspberry-pi4
Launching lib/main.dart on eLinux in debug mode...
Uninstall sample from raspberry-pi4.
[email protected]'s password: 
Uninstallation Success
Install sample (build/elinux/arm64/debug/bundle) to raspberry-pi4
[email protected]'s password: 
Installation Success
Launch sample.name on raspberry-pi4
[email protected]'s password: 
[email protected]'s password: 
Syncing files to device eLinux...                                  202ms

Flutter run key commands.
r Hot reload. 🔥🔥🔥
R Hot restart.
h List all available interactive commands.
d Detach (terminate "flutter run" but leave application running).
c Clear the screen
q Quit (terminate the application on the device).

💪 Running with sound null safety 💪

An Observatory debugger and profiler on eLinux is available at: http://127.0.0.1:43237/xd6sW5hdEoE=/
Activating Dart DevTools...                                      1,830ms
The Flutter DevTools debugger and profiler on eLinux is available at:
http://127.0.0.1:9100?uri=http://127.0.0.1:43237/xd6sW5hdEoE=/

Regarding to your trial on Rpi, i just confused about why did your target board already installed "Dart DevTools" and it will be activated automatically while executing flutter app.

or after "💪 Running with sound null safety 💪"

It is being executed on Host???

[nguyenlkdn]

Practice done already, with below notes:

I need to attach "--debug-url" manually after application started

Target Device:

LD_LIBRARY_PATH=/usr/share/flutter/3.19.3/profile/lib/ flutter-client --bundle=/usr/share/flutter/ion-hmi/3.19.3/profile/
flutter: The Dart VM service is listening on http://127.0.0.1:38867/LdVG8OhkIx8=/

Host PC:

1. Need to go into the project folder
2. Need to be sure PortForward already started before starting Host Dart Devtool

Ex: in my case is ssh -o ExitOnForwardFailure=yes -L 127.0.0.1:38867:127.0.0.1:38867 [email protected]

flutter-elinux attach --debug-url=http://127.0.0.1:38867/LdVG8OhkIx8=/
Syncing files to device eLinux...                                   6.2s

Flutter run key commands.
r Hot reload. 🔥🔥🔥
R Hot restart.
h List all available interactive commands.
d Detach (terminate "flutter run" but leave application running).
c Clear the screen
q Quit (terminate the application on the device).

A Dart VM Service on eLinux is available at: http://127.0.0.1:43373/-fXmCK4fbG0=/
The Flutter DevTools debugger and profiler on eLinux is available at: http://127.0.0.1:9100?uri=http://127.0.0.1:43373/-fXmCK4fbG0=/

Results on Web Browser

Practice on Flutter-eLinux release 3.9.13. Thank you!

@HidenoriMatsubayashi I am not sure why did my environment haven't started Devtools automatically as your practiced

[HidenoriMatsubayashi]

You should use The Flutter DevTools debugger and profiler on eLinux is available at: http://127.0.0.1:9100?uri=http://127.0.0.1:43373/-fXmCK4fbG0=/ one on Host PC.

I'm not sure what your issue is here... See also: https://github.com/sony/flutter-elinux/wiki/Debugging-with-DevTools

[HidenoriMatsubayashi]

I've confirmed that flutter-elinux with a remote-device works fine.

flutter-elinux version: 3.19.4 Remote device: Rapsberry-Pi5

$ flutter-elinux run -d raspberry-pi5 --profile
Launching lib/main.dart on eLinux in profile mode...
Uninstall sample from raspberry-pi5.
[email protected]'s password: 
Uninstallation Success
Install sample (build/elinux/arm64/profile/bundle) to raspberry-pi5
[email protected]'s password: 
Installation Success
Launch sample.name on raspberry-pi5
[email protected]'s password: 
[email protected]'s password: 

Flutter run key commands.
h List all available interactive commands.
c Clear the screen
q Quit (terminate the application on the device).
A Dart VM Service on eLinux is available at: http://127.0.0.1:39075/I6EFzjm6EeE=/
The Flutter DevTools debugger and profiler on eLinux is available at:
http://127.0.0.1:9100?uri=http://127.0.0.1:39075/I6EFzjm6EeE=/

[nguyenlkdn]

Ya i mean is we able to connect for debugging on target already after we attach debugger manuallly

flutter-elinux attach --debug-url=<Link to VM Service on target board>

I just concerned is why did it is not started automatically on our environment. Maybe it is environment issues, thank for your confirmed.

[HidenoriMatsubayashi]

Please try the followings to break down the issue.

1. Use the latest version of flutter-elinux
2. Use other devices such as Raspberry-Pi4/5

[HidenoriMatsubayashi]

I'll close this issue as there is no additional update/comment.

[HidenoriMatsubayashi]

Re-opening.

[WDoughty]

Pasting what i had in the other issue

Looked through a bit of the other issues but haven't been able to resolve what I am seeing.

flutter-elinux run -d v1200
Launching elinux/flutter/main.dart on eLinux in debug mode...
Uninstall vis_vision_app from v1200.
Uninstallation Success
Install vis_vision_app (build/elinux/arm64/debug/bundle) to v1200
Installation Success
Launch vis_vision_app.name on v1200

The discovery uri never shows up in the regular log. But if i run with -v

[+5191 ms] Installation Success
[        ] Launch vis_vision_app.name on v1200
[+1231 ms] VM Service URL on device: http://127.0.0.1:40937/MWJ-2vYYMDg=/
[   +1 ms] executing: ssh -o ExitOnForwardFailure=yes -L
127.0.0.1:40937:127.0.0.1:40937 [email protected]

Going to that url I get this.

This VM does not have a registered Dart Development Service (DDS) instance and is not currently serving Dart DevTools.

Other info, I am cross building from x64 to arm64 using custom sdk and yocto.

[WDoughty]

I used that url from the verbose log and did the same process with running the flutter-elinux attach from my development machine and I was able to get dev tools. Not sure why its not running the attachment by itself. Here is the forwardPort for this custom device.

"forwardPort": [
        "ssh", "-o", "ExitOnForwardFailure=yes",
        "-L", "127.0.0.1:${hostPort}:127.0.0.1:{$devicePort}", "ccs@<display IP>"
      ],
"forwardPortSuccessRegex": "Linux"

[HidenoriMatsubayashi]

"-L", "127.0.0.1:${hostPort}:127.0.0.1:{$devicePort}", "ccs@<display IP>"

Typo: {$devicePort} => Correct one is ${devicePort}

[WDoughty]

Good catch, but that is also how i have it in my custom devices. Working between different devices