How can i skip browser compatibility check in vaadin 24?

Flow
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How can i skip browser compatibility check in vaadin 24?

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Why do you want to do that?

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The browser compatibility check was rework recently and won’t check for browser versions but for Feature availability, meaning: if it is triggered: the browser IS NOT supported and the application won’t work - so skipping it won’t work.

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For the record, what it does check is
if (!('CSSLayerBlockRule' in window)) { in JavaScript

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So if you don’t have a browser that supports CSSLayerBlockRule, you won’t be able to use Vaadin 24

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Because a user gets this error. She is using the latest firefox and safari. (With iOS 14)

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She is using also vpn.

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Because in her country iran is the internet restricted

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Release Vaadin 24.0.0 · vaadin/platform · GitHub Safari 14 support was dropped in Vaadin 24

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Could that be the issue here?

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But in order to override the browser compatibility check, you’ll need a custom IndexHtmlRequestHandler. Basically, this is the line you want to look at: flow/flow-server/src/main/java/com/vaadin/flow/server/communication/IndexHtmlRequestHandler.java at main · vaadin/flow · GitHub

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Thank you.

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Alternatively, traverse the JSoup tree and remove the <script> tag that contains the string v-r=oldbrowser. Not sure which approach is easier, but regardless, it’s quite likely that any browser that fails that check will not work.

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Where is the JSoup tree?

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You can look at the IndexHtmlRequestHandler I linked, method synchronizedHandleRequest

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Thank you.

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Is there a problem when the os is MIUI for Xiaomi cell phone?

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If it’s not using standard Chrome as browser, could be

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Thank you