JSON API returns error for "/json/live"

[Cerothen]

What happened?

When attempting to use the http://host/liveview page nothing was loading, upon closer inspection the api located at http://host/json/live was returning the following:

{"error": 4}

The "Peek" feature in the regular UI works as expected however it is communicating using websocket messages and not with the same JSON api resource

To Reproduce Bug

Navigate to http://host/liveview when using version 0.15.0-b6 "Kosen"

Expected Behavior

The assumption is that the http://host/json/live api resource would return a non-error

Install Method

Binary from WLED.me

What version of WLED?

WLED 0.15.0-b6 (build 2410140)

Which microcontroller/board are you seeing the problem on?

ESP8266

Relevant log/trace output

No response

Anything else?

No response

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[blazoncek]

JSON live has been disabled by default in b6.

[Cerothen]

Is the intent to have the live view page be removed or switch to use the websocket?

[blazoncek]

If you want to use it, custom compile. Otherwise switch to websockects as it is more efficient.

[netmindz]

Could we have a check during the build that catches these incompatible set of build options?

[blazoncek]

If the JSON live is needed (please get users to upvote this issue) then it can be enabled in release builds. It was omitted in an attempt to reduce binary size to fit other more important features in the future. Actual commit: 0bbd6b7c4b677249b584f90abbacde6f44f0ea85

[Cerothen]

I'm not directly aware of what's needed to address the websocket however the liveview page depends on the JSON/live API. I'm just wondering if the liveview page will be rewritten to use websockets or if it is going to be removed

[blazoncek]

Web UI (including /liveview) uses websockets. Nothing special needed.

[Cerothen]

the live view page currently does try to access the json/live api.

Perhaps there is a bug?

[blazoncek]

No. You have to use websockets in the parent window. UI does that.

[death2all110]

Live view is still broken in the release build of 0.15. Web UI Peek feature works fine. Opening a new tab/window and visiting /liveview does not work. Not sure how I get /liveview to use websocket instead of /json/live

Nevermind, I figured it out. Adding '?ws' to the end works, as long as websockets are working in your browser/network.

Example: http://1.2.3.4/liveview?ws

[blazoncek]

Please read statements above. It is not broken, it was removed. If you want to have it for your ESP, you need to compile custom binary.

[amnesia106]

How can I adjust the display in the browser live view so that the 16x16 matrix LED panel is shown correctly? In the Peek preview, it is displayed correctly.

PEEK LIVEVIEW

[netmindz]

If the build only has websocket support then we shouldn't really need the user to add the ?ws modifier

Forgot my ignorance but what does the liveview give that peek doesn't? I.e why use liveview not peek?

[blazoncek]

liveview is a frame embedded in UI. it can be called/invoked independently, though. just a disclaimer: it was not developed to be invoked independent of UI.

[amnesia106]

Wenn der Build nur Websocket-Unterstützung hat, dann sollten wir den Benutzer nicht wirklich brauchen, um die ? Ws-Modifikator

Ich habe meine Unwissenheit vergessen, aber was gibt die Live-Ansicht, die ein Blick nicht gibt? D.h. warum verwenden Sie Liveview und nicht Peek?

Unfortunately, I cannot integrate the Peek view into ioBroker / Home Assistant. This would only be possible with Liveview.

[github-actions[bot]]

Hey! This issue has been open for quite some time without any new comments now. It will be closed automatically in a week if no further activity occurs. Thank you for using WLED! ✨