iOS Facebook Messenger internal browser detected as Safari

[okunishinishi]

window.navigator.userAgent of the browser is:

"Mozilla/5.0 (iPad; CPU OS 11_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E216 [FBAN/MessengerForiOS;FBAV/167.0.0.57.96;FBBV/109575372;FBDV/iPad5,3;FBMD/iPad;FBSN/iOS;FBSV/11.3;FBSS/2;FBCR/;FBID/tablet;FBLC/ja_JP;FBOP/5;FBRV/0]"

And it's detected like a

{ name: 'Safari',
  safari: true,
  webkit: true,
  ipad: true,
  ios: true,
  osname: 'iOS',
  osversion: '11.3',
  tablet: true,
  a: true }

But real name of the browser is

MessengerForiOS?

[okunishinishi]

iOS Safari supports WebRTC support while MessengerForiOS does not. So they should be different

[lancedikson]

Hi, thanks for the report. I guess, it's called WebView mode, right? I don't really have much time to investigate this, but it seems we could fix this relying on this list of UAs from FB messenger.

[lancedikson]

Small update: it seems that Facebook uses special attributes for its User Agent string, which can help us to detect standalone mode here. I'd suggest you, for now, rely on the version property of the bowser object, and if it's empty and the browser is Safari, then it's more likely a standalone mode.

[lancedikson]

I think this one is similar to #140, closing this in favor of the later one.