AdguardTeam / AdguardTeam/dnsproxy
Please document how upstream and fallback work
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描述
1. How are upstream servers used? Random, round-robin, fastest ... (`--all-servers` is clear)
2. What does upstream not available mean? dnsproxy cannot connect to the server, or it can but gets back a DNS error?
3. When the upstreams are not available, how are the fallback servers used? In order, random, ...
4. Does dnsproxy monitor the upstream servers and switches back to them from fallkback, when available again?
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调研方向
No files, tests, or entry points are named. Start by locating the code that selects upstream and fallback DNS servers, then trace how unavailable servers and recovery are handled. Done means documenting selection order, failure semantics, fallback behavior, and switching back to upstreams when they recover.
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评估
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- go
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- documentation, networking
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- 文档
- 难度
- 4/5
- 预计耗时
- 3-5 天
- 活跃度
- 停滞
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- 基本清楚
- 新手友好度
- 35/100