Hysteria Realm & Gecko (#9516)

* Hysteria Realm

* Core config

* Fix

* Fix

* Add Gecko support

v2rayN/ServiceLib/Models/CoreConfigs/SingboxConfig.cs

@@ -248,6 +248,15 @@ public class HyObfs4Sbox
 {
     public string? type { get; set; }
     public string? password { get; set; }
+    public int? min_packet_size { get; set; }
+    public int? max_packet_size { get; set; }
+}
+
+public class HyRealm4Sbox
+{
+    public string? server_url { get; set; }
+    public string? token { get; set; }
+    public string? realm_id { get; set; }
 }
 
 public class Server4Sbox : BaseServer4Sbox
@@ -334,6 +343,7 @@ public abstract class DialFields4Sbox
     public Multiplex4Sbox? multiplex { get; set; }
     public Transport4Sbox? transport { get; set; }
     public HyObfs4Sbox? obfs { get; set; }
+    public HyRealm4Sbox? realm { get; set; }
 }
 
 public abstract class BaseServer4Sbox : DialFields4Sbox

v2rayN/ServiceLib/Models/CoreConfigs/V2rayConfig.cs

@@ -507,6 +507,10 @@ public class MaskSettings4Ray
 
     public string? password { get; set; }
 
+    public string? url { get; set; }
+    public List<string>? stunServers { get; set; }
+    public string? packetSize { get; set; }
+
     // fragment
     public string? packets { get; set; }
 

v2rayN/ServiceLib/Models/Dto/HyRealm.cs

@@ -0,0 +1,106 @@
+namespace ServiceLib.Models.Dto;
+
+// realm://<token>@<rendezvous-host>[:port]/<realm-name>?stun=<stun-host>[:port]&stun=<stun-host>[:port]...
+// realm+http://<token>@<rendezvous-host>[:port]/<realm-name>?stun=<stun-host>[:port]&stun=<stun-host>[:port]...
+// example:
+// realm://public@realm.hy2.io/57f9be7c-2810-4f5b-8cb9-260bc84d6c90?stun=example.stun:3478&stun=example2.stun:3478
+public record HyRealm(
+    bool IsHttp,
+    string Token,
+    string RendezvousHost,
+    int RendezvousPort,
+    string RealmName,
+    List<string> StunList
+)
+{
+    public string RendezvousHostPort => RendezvousPort > 0 ? $"{RendezvousHost}:{RendezvousPort}" : RendezvousHost;
+
+    public static bool TryParse(string? str, out HyRealm? realm)
+    {
+        realm = null;
+        if (str == null)
+        {
+            return false;
+        }
+        try
+        {
+            var isHttp = str.StartsWith("realm+http://");
+            var prefix = isHttp ? "realm+http://" : "realm://";
+            if (!str.StartsWith(prefix))
+            {
+                return false;
+            }
+            var uri = new Uri(str);
+            var token = Utils.UrlDecode(uri.UserInfo);
+            var rendezvousHost = uri.Host;
+            var rendezvousPort = uri.IsDefaultPort ? (isHttp ? 80 : 443) : uri.Port;
+            var realmName = uri.AbsolutePath.TrimStart('/');
+            var stunList = new List<string>();
+            var query = uri.Query;
+            if (!query.IsNullOrEmpty())
+            {
+                if (query.StartsWith('?'))
+                {
+                    query = query.Substring(1);
+                }
+                var pairs = query.Split('&', StringSplitOptions.RemoveEmptyEntries);
+                foreach (var pair in pairs)
+                {
+                    var idx = pair.IndexOf('=');
+                    if (idx <= 0)
+                    {
+                        continue;
+                    }
+                    var key = pair.Substring(0, idx);
+                    if (!key.Equals("stun", StringComparison.OrdinalIgnoreCase))
+                    {
+                        continue;
+                    }
+                    var val = pair.Substring(idx + 1);
+                    stunList.Add(Utils.UrlDecode(val));
+                }
+            }
+            realm = new HyRealm(isHttp, token, rendezvousHost, rendezvousPort, realmName, stunList);
+            return true;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    public string ToUri()
+    {
+        var prefix = IsHttp ? "realm+http://" : "realm://";
+        var uriBuilder = new UriBuilder
+        {
+            Scheme = IsHttp ? "http" : "realm",
+            Host = RendezvousHost,
+            Port = RendezvousPort,
+            Path = "/" + RealmName,
+            UserName = Utils.UrlEncode(Token),
+        };
+        if (StunList is { Count: > 0 })
+        {
+            // var query = string.Join('&', StunList.Select(s => "stun=" + Utils.UrlEncode(s)));
+            // NOTE: maybe we don't need to encode the stun host:port, since it should be a valid URI component already, and encoding will make it unreadable
+            var query = string.Join('&', StunList.Select(s => "stun=" + s));
+            uriBuilder.Query = query;
+        }
+        return prefix + uriBuilder.Uri.GetComponents(
+            UriComponents.UserInfo | UriComponents.HostAndPort | UriComponents.PathAndQuery, UriFormat.UriEscaped);
+    }
+
+    public string ToUriForFinalmask()
+    {
+        var prefix = IsHttp ? "realm+http://" : "realm://";
+        var uriBuilder = new StringBuilder();
+        uriBuilder.Append(prefix);
+        uriBuilder.Append(Utils.UrlEncode(Token));
+        uriBuilder.Append('@');
+        uriBuilder.Append(RendezvousHostPort);
+        uriBuilder.Append('/');
+        uriBuilder.Append(Utils.UrlEncode(RealmName));
+        return uriBuilder.ToString();
+    }
+}

v2rayN/ServiceLib/Models/Entities/ProtocolExtraItem.cs

@@ -31,6 +31,12 @@ public record ProtocolExtraItem
     public int? DownMbps { get; init; }
     public string? Ports { get; init; }
     public string? HopInterval { get; init; }
+    // realm://<token>@<rendezvous-host>[:port]/<realm-name>?stun=<stun-host>[:port]&stun=<stun-host>[:port]...
+    // example:
+    // realm://public@realm.hy2.io/57f9be7c-2810-4f5b-8cb9-260bc84d6c90?stun=example.stun:3478&stun=example2.stun:3478
+    public string? Hy2RealmUrl { get; init; }
+    public string? GeckoMinPacketSize { get; init; }
+    public string? GeckoMaxPacketSize { get; init; }
 
     // naiveproxy
     public int? InsecureConcurrency { get; init; }