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plugin/forward: Add http(2) host/authority header and TO server resolution (#8233)

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This commit is contained in:
llucas
2026-07-22 19:07:09 -07:00
committed by GitHub
parent 56f7c09311
commit 73d1eacf87
9 changed files with 83 additions and 32 deletions
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13
plugin/pkg/proxy/connect.go
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@@ -228,6 +228,13 @@ func (p *Proxy) lookupDoH(ctx context.Context, state request.Request, _ Options)
// DoH always runs over TCP (HTTPS), regardless of the downstream
// client's protocol.
const proto = "tcp"
// records the origin Id before upstream.
originId := state.Req.Id
// RFC8484 has DNS ID of 0 as a SHOULD
state.Req.Id = 0
defer func() {
state.Req.Id = originId
}()
var localAddr net.Addr
trace := &httptrace.ClientTrace{
@@ -237,7 +244,7 @@ func (p *Proxy) lookupDoH(ctx context.Context, state request.Request, _ Options)
}
ctx = httptrace.WithClientTrace(ctx, trace)
req, err := doh.NewRequestWithContext(ctx, p.dohMethod, p.addr, state.Req)
req, err := doh.NewRequestWithContext(ctx, p.dohMethod, p.addr, p.dohHost, state.Req)
if err != nil {
return nil, nil, proto, err
}
@@ -253,6 +260,10 @@ func (p *Proxy) lookupDoH(ctx context.Context, state request.Request, _ Options)
return nil, localAddr, proto, err
}
// recovery the origin Id after upstream.
if ret != nil {
ret.Id = originId
}
return ret, localAddr, proto, nil
}