WebView Chromium

[Sankarshana Madhavarao]

Hi,

In Android WebView , (Android 4.4) onwards, I understand that, WebSocket is supported out of the box.

In this context, if I use WebView to load HTML pages that in turn uses WebSocket client of Javascript, question is, the OnMessage() of WebSokcet gets called on main UI thread or in some other context.

If I rapidly send multiple messages from WebSocket Server to WebSocket JS client, do the OnMessage gets called serially or there is a chance that it 2 instances of OnMessage() can exist simultanelusly.

Thanks

[PhistucK]

JavaScript has only one thread (excluding Web Worker and similar), so I believe it should be called on the main thread of the WebView. The messages will be processed serially, I believe.

☆PhistucK

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[Mikhail Naganov]

Hi Sankarshana,

JavaScript code runs on a separate thread from the app's main UI thread (in Chromium's terms, the app's main UI thread is called "browser UI thread", and JavaScript runs on the "render thread").

OnMessage must be called serially. JavaScript doesn't allow interruptions of code execution.

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[Sankarshana Madhavarao]

Thanks all for response.

Is there a threading model documentation to know different aspects when webview is used ( not full

Chrome browser)

Thx

Sent from my iPhone

[Mikhail Naganov]

You can take a look at this page which has links to some documentation: http://dev.chromium.org/developers/androidwebview