MTDNS should not use Google DOH directly

[antergone]

Checklist

• [x] I am reporting an issue in existing functionality that does not work as intended
• [x] I've searched for existing GitHub issues

Description

Why use Google DOH Server first and use DNS after timeout? If user can't use Google DOH normally, user have to wait for a timeout every time. I think DNS can be used directly, or the user can set not to use DOH

Some users have reported bugs before, but they haven't solved them. https://github.com/TelegramMessenger/Telegram-iOS/issues/221

https://github.com/TelegramMessenger/Telegram-iOS/blob/aa1b009cea6b9163dd025b36506704292ac0e814/submodules/MtProtoKit/Sources/MTTcpConnection.m#L819

https://github.com/TelegramMessenger/Telegram-iOS/blob/aa1b009cea6b9163dd025b36506704292ac0e814/submodules/MtProtoKit/Sources/MTDNS.m#L337

[f4nff]

https://github.com/TelegramMessenger/Telegram-iOS/issues/682

It seems to be the same thing to me.

In some areas, dns over https cannot be connected, and this is hard-coded and users cannot customize it.

[poromony]

Looking forward to fix :(

[ichenhe]

It is really a serious problem in China mainland. Please fix it :(

[LevineWoo]

What is the solution to this problem now? Is vpn only open 24 hours a day?

[ichenhe]

TG 内置代理（socks5/tgp）直接填 ip 不要用域名就行了。

Use ip directly in Telegram built-in proxy settings l. 在 2022年8月23日+0800 17:43，əuıʌəl @.***>，写道：

请问这个问题现在有什么办法解决？只能24小时开着vpn了吗？ — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: @.***>

[LevineWoo]

TG 内置代理（socks5/tgp）直接填 ip 不要用域名就行了。 Use ip directly in Telegram built-in proxy settings l. 在 2022年8月23日+0800 17:43，əuıʌəl @.>，写道： … 请问这个问题现在有什么办法解决？只能24小时开着vpn了吗？ — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you commented.Message ID: @.>

问题是家里的路由器拨号的，ip过两天就变化。。这种好像就不行了吧。。

[Kylmakalle]

Implemented in my fork Swiftgram. Feel free to download from App Store or build from sources.