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[client] Surface DNS forwarder upstream failures via Extended DNS Errors (#6441)

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This commit is contained in:
Viktor Liu
2026-06-22 12:41:33 +02:00
committed by GitHub
parent c9e99659ea
commit 522b8ed969
7 changed files with 213 additions and 32 deletions
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client/internal/dns/upstream_test.go
-13
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@@ -985,19 +985,6 @@ func TestEDEName(t *testing.T) {
assert.Equal(t, "EDE 9999", edeName(9999), "unknown code falls back to numeric")
}
func TestStripOPT(t *testing.T) {
rm := &dns.Msg{
Extra: []dns.RR{
&dns.OPT{Hdr: dns.RR_Header{Name: ".", Rrtype: dns.TypeOPT}},
&dns.A{Hdr: dns.RR_Header{Name: "x.", Rrtype: dns.TypeA}, A: net.IPv4(1, 2, 3, 4)},
},
}
stripOPT(rm)
assert.Len(t, rm.Extra, 1, "OPT should be removed, A kept")
_, isOPT := rm.Extra[0].(*dns.OPT)
assert.False(t, isOPT, "remaining record must not be OPT")
}
func TestUpstreamResolver_NonRetryableEDEShortCircuits(t *testing.T) {
upstream1 := netip.MustParseAddrPort("192.0.2.1:53")
upstream2 := netip.MustParseAddrPort("192.0.2.2:53")