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proxy dns with NOTIMP error #2954

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proxy dns with NOTIMP error #2954

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rp-hello
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@rp-hello rp-hello commented Mar 31, 2024 •
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Chromium will send SVCB/HTTPS type dns query, which cause dns leak.

To prvent dns leak,

  • If the dns query type is not implemented, should return NOTIMP error, not just send data to original destination.
  • If the dns query has wrong format domain, should return FORMERR error, not send data to original destination.

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rp-hello commented Mar 31, 2024 •
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Here is similar issue XTLS/Xray-core#3006.
Could we just introduce nonIPQuery option?

  • when nonIPQuery=drop, just return NOTIMP, and this is default behavior
  • when nonIPQuery=skip, follow the original chain, call connWriter.WriteMessage

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It has been open 120 days with no activity. Remove stale label or comment or this will be closed in 5 days

@github-actions github-actions bot added the Stale label Jul 30, 2024
@github-actions github-actions bot removed the Stale label Aug 4, 2024
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I think it would be better if we guard this new behavior behind a flag or option, otherwise it would take significantly longer time decide if a regression is justified.

@xiaokangwang xiaokangwang added the Extensive Review Required Require an extensive review from organization owner, cannot be merged without owner approval label Aug 19, 2024
local added 4 commits November 3, 2024 20:36
proxy dns with NOTIMP error
47e416a
fix compile error when protoc is relative link
26a4ae1 
```
$ go generate
...
proto.go
fork/exec ../Cellar/protobuf/28.3/bin/protoc: no such file or directory
exit status 1
proto.go:5: running "go": exit status 1
context_test.go
functions_test.go
v2ray_test.go
$ ls -l `which protoc`
lrwxr-xr-x 1 local admin 34 Nov  1 13:56 /opt/homebrew/bin/protoc -> ../Cellar/protobuf/28.3/bin/protoc
```
add nonIPQuery for dns config
ae82fcd
go generate with only dns.proto
2306e1d
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