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Fakedns improvements (#731)

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Co-authored-by: Shelikhoo <xiaokangwang@outlook.com>
Co-authored-by: sixg0000d <sixg0000d@gmail.com>
Co-authored-by: Loyalsoldier <10487845+Loyalsoldier@users.noreply.github.com>
This commit is contained in:
yuhan6665 2021-10-20 01:15:49 -04:00 • committed by GitHub
parent e286cdcaa8
commit 6b6974c804
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GPG key ID: 4AEE18F83AFDEB23
12 changed files with 478 additions and 59 deletions
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14
app/dns/nameserver_fakedns.go
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@ -20,7 +20,7 @@ func (FakeDNSServer) Name() string {
return "FakeDNS"
}
func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, _ dns.IPOption, _ bool) ([]net.IP, error) {
func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, opt dns.IPOption, _ bool) ([]net.IP, error) {
if f.fakeDNSEngine == nil {
if err := core.RequireFeatures(ctx, func(fd dns.FakeDNSEngine) {
f.fakeDNSEngine = fd
@ -28,7 +28,12 @@ func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, _
return nil, newError("Unable to locate a fake DNS Engine").Base(err).AtError()
}
}
ips := f.fakeDNSEngine.GetFakeIPForDomain(domain)
var ips []net.Address
if fkr0, ok := f.fakeDNSEngine.(dns.FakeDNSEngineRev0); ok {
ips = fkr0.GetFakeIPForDomain3(domain, opt.IPv4Enable, opt.IPv6Enable)
} else {
ips = f.fakeDNSEngine.GetFakeIPForDomain(domain)
}
netIP, err := toNetIP(ips)
if err != nil {
@ -37,5 +42,8 @@ func (f *FakeDNSServer) QueryIP(ctx context.Context, domain string, _ net.IP, _
newError(f.Name(), " got answer: ", domain, " -> ", ips).AtInfo().WriteToLog()
return netIP, nil
if len(netIP) > 0 {
return netIP, nil
}
return nil, dns.ErrEmptyResponse
}