From 8eca5fe8af0e1768a315bfa890e1b22d878740de Mon Sep 17 00:00:00 2001
From: DHR60 <dehongren60@gmail.com>
Date: Fri, 6 Feb 2026 11:27:02 +0000
Subject: [PATCH] Add finalmask support (#5242)

---
 .../java/com/v2ray/ang/dto/V2rayConfig.kt     | 31 +++++++-------
 .../java/com/v2ray/ang/fmt/Hysteria2Fmt.kt    | 15 +++----
 .../v2ray/ang/handler/V2rayConfigManager.kt   | 40 ++++++++++++++-----
 3 files changed, 53 insertions(+), 33 deletions(-)

diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/dto/V2rayConfig.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/dto/V2rayConfig.kt
index ad1685a0..0878ae45 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/dto/V2rayConfig.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/dto/V2rayConfig.kt
@@ -162,7 +162,7 @@ data class V2rayConfig(
             var realitySettings: TlsSettingsBean? = null,
             var grpcSettings: GrpcSettingsBean? = null,
             var hysteriaSettings: HysteriaSettingsBean? = null,
-            var udpmasks: List<UdpMasksBean>? = null,
+            var finalmask: FinalMaskBean? = null,
             val dsSettings: Any? = null,
             var sockopt: SockoptBean? = null
         ) {
@@ -202,15 +202,8 @@ data class V2rayConfig(
                 var downlinkCapacity: Int = 100,
                 var congestion: Boolean = false,
                 var readBufferSize: Int = 1,
-                var writeBufferSize: Int = 1,
-                var header: HeaderBean = HeaderBean(),
-                var seed: String? = null
-            ) {
-                data class HeaderBean(
-                    var type: String = "none",
-                    var domain: String? = null
-                )
-            }
+                var writeBufferSize: Int = 1
+            )
 
             data class WsSettingsBean(
                 var path: String? = null,
@@ -310,13 +303,19 @@ data class V2rayConfig(
                 )
             }
 
-            data class UdpMasksBean(
-                var type: String,
-                var settings: UdpMasksSettingsBean? = null
+            data class FinalMaskBean(
+                var tcp: List<MaskBean>? = null,
+                var udp: List<MaskBean>? = null
             ) {
-                data class UdpMasksSettingsBean(
-                    var password: String? = null
-                )
+                data class MaskBean(
+                    var type: String,
+                    var settings: MaskSettingsBean? = null
+                ) {
+                    data class MaskSettingsBean(
+                        var password: String? = null,
+                        var domain: String? = null
+                    )
+                }
             }
         }
 
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/fmt/Hysteria2Fmt.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/fmt/Hysteria2Fmt.kt
index 1b461b0c..b136e3b0 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/fmt/Hysteria2Fmt.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/fmt/Hysteria2Fmt.kt
@@ -5,8 +5,7 @@ import com.v2ray.ang.enums.EConfigType
 import com.v2ray.ang.enums.NetworkType
 import com.v2ray.ang.dto.ProfileItem
 import com.v2ray.ang.dto.V2rayConfig.OutboundBean
-import com.v2ray.ang.dto.V2rayConfig.OutboundBean.StreamSettingsBean
-import com.v2ray.ang.dto.V2rayConfig.OutboundBean.StreamSettingsBean.UdpMasksBean.UdpMasksSettingsBean
+import com.v2ray.ang.dto.V2rayConfig.OutboundBean.StreamSettingsBean.FinalMaskBean
 import com.v2ray.ang.extension.idnHost
 import com.v2ray.ang.extension.isNotNullEmpty
 import com.v2ray.ang.extension.nullIfBlank
@@ -109,11 +108,13 @@ object Hysteria2Fmt : FmtBase() {
         }
 
         if (profileItem.obfsPassword.isNotNullEmpty()) {
-            outboundBean.streamSettings?.udpmasks = mutableListOf(
-                StreamSettingsBean.UdpMasksBean(
-                    type = "salamander",
-                    settings = UdpMasksSettingsBean(
-                        password = profileItem.obfsPassword
+            outboundBean.streamSettings?.finalmask = FinalMaskBean(
+                udp = listOf(
+                    FinalMaskBean.MaskBean(
+                        type = "salamander",
+                        settings = FinalMaskBean.MaskBean.MaskSettingsBean(
+                            password = profileItem.obfsPassword
+                        )
                     )
                 )
             )
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/handler/V2rayConfigManager.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/handler/V2rayConfigManager.kt
index 117453cf..7978e3c2 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/handler/V2rayConfigManager.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/handler/V2rayConfigManager.kt
@@ -1183,19 +1183,39 @@ object V2rayConfigManager {
             }
 
             NetworkType.KCP.type -> {
-                val kcpsetting = StreamSettingsBean.KcpSettingsBean()
-                kcpsetting.header.type = headerType ?: "none"
+                streamSettings.kcpSettings = StreamSettingsBean.KcpSettingsBean()
+                val udpMaskList = mutableListOf<StreamSettingsBean.FinalMaskBean.MaskBean>()
+                if (!headerType.isNullOrEmpty() && headerType != "none") {
+                    val kcpHeaderType = when {
+                        headerType == "wechat-video" -> "header-wechat"
+                        else -> "header-$headerType"
+                    }
+                    udpMaskList.add(StreamSettingsBean.FinalMaskBean.MaskBean(
+                        type = kcpHeaderType,
+                        settings = if (headerType == "dns" && !host.isNullOrEmpty()) {
+                            StreamSettingsBean.FinalMaskBean.MaskBean.MaskSettingsBean(
+                                domain = host
+                            )
+                        } else {
+                            null
+                        }
+                    ))
+                }
                 if (seed.isNullOrEmpty()) {
-                    kcpsetting.seed = null
+                    udpMaskList.add(StreamSettingsBean.FinalMaskBean.MaskBean(
+                        type = "mkcp-original"
+                    ))
                 } else {
-                    kcpsetting.seed = seed
+                    udpMaskList.add(StreamSettingsBean.FinalMaskBean.MaskBean(
+                        type = "mkcp-aes128gcm",
+                        settings = StreamSettingsBean.FinalMaskBean.MaskBean.MaskSettingsBean(
+                            password = seed
+                        )
+                    ))
                 }
-                if (host.isNullOrEmpty()) {
-                    kcpsetting.header.domain = null
-                } else {
-                    kcpsetting.header.domain = host
-                }
-                streamSettings.kcpSettings = kcpsetting
+                streamSettings.finalmask = StreamSettingsBean.FinalMaskBean(
+                    udp = udpMaskList.toList()
+                )
             }
 
             NetworkType.WS.type -> {