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Merged
2dust merged 1 commit into from
Mar 1, 2026
+52 −19
Merged

Add DNS routing #8841

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1 change: 1 addition & 0 deletions v2rayN/ServiceLib/Global.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,7 @@ public class Global
public const string DirectTag = "direct";
public const string BlockTag = "block";
public const string DnsTag = "dns-module";
public const string DirectDnsTag = "direct-dns";
public const string BalancerTagSuffix = "-round";
public const string StreamSecurity = "tls";
public const string StreamSecurityReality = "reality";
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6 changes: 0 additions & 6 deletions v2rayN/ServiceLib/Models/V2rayConfig.cs
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Expand Up @@ -220,12 +220,6 @@ public class DnsServer4Ray
public List<string>? domains { get; set; }
public bool? skipFallback { get; set; }
public List<string>? expectedIPs { get; set; }
public List<string>? unexpectedIPs { get; set; }
public string? clientIp { get; set; }
public string? queryStrategy { get; set; }
public int? timeoutMs { get; set; }
public bool? disableCache { get; set; }
public bool? finalQuery { get; set; }
public string? tag { get; set; }
}

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64 changes: 51 additions & 13 deletions v2rayN/ServiceLib/Services/CoreConfig/V2ray/V2rayDnsService.cs
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Expand Up @@ -71,14 +71,33 @@ private void GenDns()
dnsItem.enableParallelQuery = simpleDnsItem?.ParallelQuery is true ? true : null;

// DNS routing
var directDnsTags = dnsItem.servers
.Select(server =>
{
var tagNode = (server as JsonObject)?["tag"];
return tagNode is JsonValue value && value.TryGetValue<string>(out var tag) ? tag : null;
})
.Where(tag => tag is not null && tag.StartsWith(Global.DirectDnsTag, StringComparison.Ordinal))
.Select(tag => tag!)
.ToList();
if (directDnsTags.Count > 0)
{
_coreConfig.routing.rules.Add(new()
{
type = "field",
inboundTag = directDnsTags,
outboundTag = Global.DirectTag,
});
}

var finalRule = BuildFinalRule();
dnsItem.tag = Global.DnsTag;
_coreConfig.routing.rules.Add(new()
{
type = "field",
inboundTag = [Global.DnsTag],
outboundTag = finalRule.outboundTag,
balancerTag = finalRule.balancerTag
balancerTag = finalRule.balancerTag,
});

_coreConfig.dns = dnsItem;
Expand Down Expand Up @@ -212,11 +231,13 @@ private void FillDnsServers(Dns4Ray dnsItem)

dnsItem.servers ??= [];

var directDnsTagIndex = 1;

AddDnsServers(remoteDNSAddress, proxyDomainList);
AddDnsServers(directDNSAddress, directDomainList);
AddDnsServers(directDNSAddress, directDomainList, true);
AddDnsServers(remoteDNSAddress, proxyGeositeList);
AddDnsServers(directDNSAddress, directGeositeList);
AddDnsServers(directDNSAddress, expectedDomainList, expectedIPs);
AddDnsServers(directDNSAddress, directGeositeList, true);
AddDnsServers(directDNSAddress, expectedDomainList, true, expectedIPs);
if (dnsServerDomains.Count > 0)
{
AddDnsServers(bootstrapDNSAddress, dnsServerDomains);
Expand All @@ -234,8 +255,21 @@ private void FillDnsServers(Dns4Ray dnsItem)
useDirectDns = noDomain && noProcess && isAnyIp && isAnyPort && isAnyNetwork;
}

var defaultDnsServers = useDirectDns ? directDNSAddress : remoteDNSAddress;
dnsItem.servers.AddRange(defaultDnsServers);
if (!useDirectDns)
{
dnsItem.servers.AddRange(remoteDNSAddress);
}
else
{
foreach (var dns in directDNSAddress)
{
var dnsServer = CreateDnsServer(dns, []);
dnsServer.tag = $"{Global.DirectDnsTag}-{directDnsTagIndex++}";
dnsServer.skipFallback = false;
dnsItem.servers.Add(JsonUtils.SerializeToNode(dnsServer,
new JsonSerializerOptions { DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull }));
}
}
return;

static List<string> ParseDnsAddresses(string? dnsInput, string defaultAddress)
Expand All @@ -249,7 +283,7 @@ static List<string> ParseDnsAddresses(string? dnsInput, string defaultAddress)
return addresses.Count > 0 ? addresses : new List<string> { defaultAddress };
}

static object? CreateDnsServer(string dnsAddress, List<string> domains, List<string>? expectedIPs = null)
static DnsServer4Ray CreateDnsServer(string dnsAddress, List<string> domains, List<string>? expectedIPs = null)
{
var (domain, scheme, port, path) = Utils.ParseUrl(dnsAddress);
var domainFinal = dnsAddress;
Expand All @@ -272,21 +306,25 @@ static List<string> ParseDnsAddresses(string? dnsInput, string defaultAddress)
domains = domains.Count > 0 ? domains : null,
expectedIPs = expectedIPs?.Count > 0 ? expectedIPs : null
};
return JsonUtils.SerializeToNode(dnsServer, new JsonSerializerOptions
{
DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull
});
return dnsServer;
}

void AddDnsServers(List<string> dnsAddresses, List<string> domains, List<string>? expectedIPs = null)
void AddDnsServers(List<string> dnsAddresses, List<string> domains, bool isDirectDns = false, List<string>? expectedIPs = null)
{
if (domains.Count <= 0)
{
return;
}
foreach (var dnsAddress in dnsAddresses)
{
dnsItem.servers.Add(CreateDnsServer(dnsAddress, domains, expectedIPs));
var dnsServer = CreateDnsServer(dnsAddress, domains, expectedIPs);
if (isDirectDns)
{
dnsServer.tag = $"{Global.DirectDnsTag}-{directDnsTagIndex++}";
}
var dnsServerNode = JsonUtils.SerializeToNode(dnsServer,
new JsonSerializerOptions { DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull });
dnsItem.servers.Add(dnsServerNode);
}
}
}
Expand Down