DNS: Implement queryStrategy for "localhost"

[Fangliding]

#4302
我也不知道为什么当初没实现 或许是有原因的 可能需要考古

[patterniha]

#4302 I don’t know why it wasn’t implemented in the first place. Maybe there’s a reason. Archaeology may be needed.

@cty123 added per server queryStrategy on Sep 18, 2023 #2564
@xiaorouji realized that "udp" was missing on Aug 25, 2024 #3728 , but didn't realize that "localhost" was also missing!!!

and now I accidentally realize that "localhost" was missing :)

[cty123]

When I implemented the feature for localhost, the ci failed on windows for some reasons. I thought it was windows specific setup problem. Since I hadn't been using a windows machine for a long time, I wasn't able to reproduce the problem locally.

[patterniha]

#4302 我也不知道为什么当初没实现 或许是有原因的 可能需要考古

your solution for filtering ipv6 and ipv4 is different from @xiaorouji and @cty123 solutions.

Why do we first query for both IPv6 and IPv4 and then filter? we couldn't just query for the IPv4/ipv6 from the beginning?

[Fangliding]

When I implemented the feature for localhost, the ci failed on windows for some reasons. I thought it was windows specific setup problem. Since I hadn't been using a windows machine for a long time, I wasn't able to reproduce the problem locally.

以前test写的有问题就是动不动炸 不一定是代码问题 一般三个平台有一个跑通了就没啥事 全挂了就是代码有问题 现在已经修的七七八八了 只有macos有时候还是莫名其妙炸掉

我再翻了一下 很久以前这个逻辑本来已经在核心里了 把option丢进去重新应用下就好了 根本没必要过滤