feat: support UDP/TCP DNS select [WIP] #34
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设置了一个简单的选择策略，默认使用UDP，UDP无法使用则切换到TCP，当UDP不行、TCP行的时候，设置程序优先使用(只使用)TCP，并启动一个10分钟的定时器，定时器触发后设置程序优先使用UDP，当UDP、TCP都不行的时候，什么都不做，只是使用系统local dns
Mythologyli
reviewed
Sep 22, 2023
| log.Printf("Resolve IPv4 addr failed using local DNS: " + host + ". Reject connection.") | ||
| return ctx, nil, err | ||
| } else { | ||
| return ctx, target.IP, nil |
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发现之前引入 go-socks 的时候不小心在这里产生了一个 Bug，设置为不使用 ZJU DNS 的话纯 V6 域名应该是没法工作的。合并这个提交就可以解决
那我感觉可以先合了看看，指不定哪天zju dns又抽风了 |
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感谢提交~ |
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WIP 一个大致的想法，可以再斟酌下
设置了一个简单的选择策略，默认使用UDP，UDP无法使用则切换到TCP，当UDP不行、TCP行的时候，设置程序优先使用(只使用)TCP，并启动一个10分钟的定时器，定时器触发后设置程序优先使用UDP，当UDP、TCP都不行的时候，什么都不做，只是使用系统local dns