Support multi-upstream DNS servers and optimistic DNS.

[lancelot-moon]

1. Multi-upstream DNS servers such as what is in AG Home.
   Examples:
   1.1.1.1 - regular DNS (over UDP)
   tls://1dot1dot1dot1.cloudflare-dns.com - encrypted DNS-over-TLS
   https://cloudflare-dns.com/dns-query - encrypted DNS-over-HTTPS
   tcp://1.1.1.1 - regular DNS (over TCP)
   sdns://... - you can use DNS Stamps for DNSCrypt or DNS-over-HTTPS resolvers

2. Optimistic DNS project lets all upstream DNS servers resolve domains at the same time and gets the fastest response time.

https://forums.developer.apple.com/thread/110429

[ameshkov]

Good news is that dnsproxy supports both, we just need to implement this in the UI.

[lancelot-moon]

It seems that you add the feature in v3.0.237η , right?

Screenshot:

About DNS upstreams, does AG app support the under syntax?
tcp://1.1.1.1 - regular DNS (over TCP)

May you give these examples in Android app?

1.1.1.1 - regular DNS (over UDP)
tls://1dot1dot1dot1.cloudflare-dns.com - encrypted DNS-over-TLS
https://cloudflare-dns.com/dns-query - encrypted DNS-over-HTTPS
tcp://1.1.1.1 - regular DNS (over TCP)
sdns://... - you can use DNS Stamps for DNSCrypt or DNS-over-HTTPS resolvers

I think the above descriptions are good!

[ameshkov]

It seems that you add the feature in v3.0.237 nightly, right?

Yep, surprisingly:)

May you give these examples in Android app?

Unlike AG Home, there's not enough place for a large description. This might be explained in the knowledge base

[lancelot-moon]

About DNS upstreams, does AG app support the under syntax?
tcp://1.1.1.1 - regular DNS (over TCP)

AG app only marks 4 kinds of syntax (IP, sdns, https and tls).

Screenshot:

[ameshkov]

tcp://1.1.1.1 - regular DNS (over TCP)

Well, it does, but we don't advertise it. Frankly, this is redundant as TCP will be used implicitly anyway when UDP is not available.

[lancelot-moon]

Excuse me.
How many of DNS upstreams can be added in the same field?
May you mark the upper limit in app?

2 DNS upstreams?
Or more than 5?

Thanks.

[ameshkov]

Any number