CefSharp?

[SinewaveLaboratorium]

Hi,

Thanks for SyncTrayzor 2.0.

It works similarly to the version it replaced, but I noticed in my firewall that it calls a new process: CefSharp.BrowserSubprocess.exe

This process connects to domains such as:
mtalk.google.com.
content-autofill.googleapis.com.
www.google.com.
safebrowsing.googleapis.com.

Can you explain why is this necessary? Can this be disabled or blocked?

[GermanCoding]

This is just how CEF operates these days. CEF (Chromium Embedded Framework) is the browser used by SyncTrayzor to display syncthing's UI. CEF is essentially a stripped-down version of Chrome (Chromium). As such, Chrome talking to Chrome (Google) services is somewhat expected...

The old SyncTrayzor also used CEF. However, it had CEF hosted in the same process as SyncTrayzor. This isn't really supported/encouraged anymore these days. For whatever reasons, CEF wants to be in its own process - this is CefSharp.BrowserSubprocess.exe

CefSharp is a .NET library around CEF (as CEF itself is C/C++, like Chrome). They bundle CEF for SyncTrayzor and handle much of the low-level stuff of interacting with CEF. Their wiki - https://github.com/cefsharp/CefSharp/wiki/General-Usage - has lots of information.