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Re:Socket.io 1.1.0 released by untog on Thursday September 04, 2014 @10:05AM (#8268291)
Android 4.3 and older don't support WebSockets

In native developmet, I presume? Because the Chrome browser can handle them fine.

Re:Socket.io 1.1.0 released by coev on Thursday September 04, 2014 @01:51PM (#8269632)
Yes, native. Android's webview was based on the old Android Browser until KitKat/4.4 when it switched to using Chrome to render.