[ameshkov]

We do, and from what we know a bigger problem in China is detecting traffic patterns. SNI filtering is not that big of a deal, in order to block your domain it needs to first learn which one you’re using. What for the traffic patterns, people in China prefer to selectively route traffic to the tunnel. For instance, the client apps allow you to route *.cn domains (or any other domains) directly. It makes it harder to detect that you’re using a VPN.

[rfv6723]

In Fujian province, all foreign domains which aren't in white list are blocked.

This results that proxy server needs to use a fake sni in white list or ditch https.

[ameshkov]

This is actually supported by both the client and the server.

To use it in mobile clients you need to specify two domain names like that: fake-sni.com|domain.com where “fake-sni.com” is the domain thay will be in the SNI and “domain.com” is the domain in your TLS certificate (used to check the server’s authenticity)

[eptcyka]

How do you do this on iOS?

[ameshkov]

You mean in TrustTunnel apps? You can create a routing profile there and select which domains/ips are bypassed, and then select that routing profile in the vpn connection settings.