feat: IPv6状态检测和仅IPv4的okhttp3 Dns实现

api/src/main/java/com/muedsa/tvbox/api/plugin/TvBoxContext.kt

@@ -1,10 +1,12 @@
 package com.muedsa.tvbox.api.plugin
 
 import com.muedsa.tvbox.api.store.IPluginPerfStore
+import com.muedsa.tvbox.tool.NetworkUtils
 
 data class TvBoxContext(
-    val screenWidth: Int,       // TV屏幕宽度dp
-    val screenHeight: Int,      // TV屏幕高度dp
-    val debug: Boolean,         // debug模式
-    val store: IPluginPerfStore // 插件PrefStore
+    val screenWidth: Int,                       // TV屏幕宽度dp
+    val screenHeight: Int,                      // TV屏幕高度dp
+    val debug: Boolean,                         // debug模式
+    val store: IPluginPerfStore,                // 插件PrefStore
+    val iPv6Status: NetworkUtils.IPv6Status     // IPv6状态
 )

api/src/main/java/com/muedsa/tvbox/tool/HttpTool.kt

@@ -23,6 +23,7 @@ const val ChromeUserAgent =
 fun createOkHttpClient(
     debug: Boolean = false,
     cookieJar: CookieJar = CookieJar.NO_COOKIES,
+    onlyIpv4: Boolean = true,
     builderApply: OkHttpClient.Builder.() -> Unit = {}
 ): OkHttpClient =
     OkHttpClient.Builder()
@@ -32,6 +33,9 @@ fun createOkHttpClient(
                 addNetworkInterceptor(HttpLoggingInterceptor()
                     .also { it.level = HttpLoggingInterceptor.Level.BODY })
             }
+            if (onlyIpv4) {
+                dns(OnlyIPv4Dns)
+            }
             builderApply()
         }
         .build()

api/src/main/java/com/muedsa/tvbox/tool/IPv6Checker.kt

@@ -0,0 +1,64 @@
+package com.muedsa.tvbox.tool
+
+import java.net.Inet6Address
+import java.net.InetSocketAddress
+import java.net.NetworkInterface
+import java.net.Socket
+
+object NetworkUtils {
+
+    private val HOSTS = listOf(
+        // Google DNS
+        "2001:4860:4860::8888" to 53,
+        // 阿里DNS
+        "2400:3200::1" to 53,
+        // 百度DNS
+        "2400:da00::6666" to 53,
+        // CNNIC DNS
+        "2001:dc7:1000::1" to 53
+    )
+
+    // 检查是否有可用的IPv6地址
+    fun hasIPv6Support(): Boolean = try {
+        NetworkInterface.getNetworkInterfaces()
+            .asSequence()
+            .flatMap { it.inetAddresses.asSequence() }
+            .any { it is Inet6Address && !it.isLoopbackAddress }
+    } catch (_: Exception) {
+        false
+    }
+
+    // 尝试创建IPv6 Socket
+    fun canConnectIPv6(): Boolean {
+        return HOSTS.any { (host, port) ->
+            try {
+                Socket().use { socket ->
+                    socket.connect(InetSocketAddress(host, port), 1000)
+                    true
+                }
+            } catch (_: Exception) {
+                false
+            }
+        }
+    }
+
+    // 综合检测方法
+    fun checkIPv6Support(): IPv6Status {
+        val hasIPv6Interface = hasIPv6Support()
+        val systemIPv6Enabled = !System.getProperty("java.net.preferIPv4Stack", "false").toBoolean()
+
+        return when {
+            !systemIPv6Enabled -> IPv6Status.DISABLED_BY_SYSTEM
+            !hasIPv6Interface -> IPv6Status.NO_IPV6_INTERFACE
+            !canConnectIPv6() -> IPv6Status.NO_IPV6_CONNECTION
+            else -> IPv6Status.SUPPORTED
+        }
+    }
+
+    enum class IPv6Status {
+        SUPPORTED,          // IPv6完全支持
+        NO_IPV6_INTERFACE,  // 没有IPv6网络接口
+        NO_IPV6_CONNECTION, // 有接口但无法连接
+        DISABLED_BY_SYSTEM  // 系统禁用IPv6
+    }
+}

api/src/main/java/com/muedsa/tvbox/tool/OnlyIPv4Dns.kt

@@ -0,0 +1,16 @@
+package com.muedsa.tvbox.tool
+
+import okhttp3.Dns
+import java.net.Inet4Address
+import java.net.InetAddress
+import java.net.UnknownHostException
+
+object OnlyIPv4Dns : Dns {
+    override fun lookup(hostname: String): List<InetAddress> = InetAddress.getAllByName(hostname)
+        .filter { it is Inet4Address }
+        .also { addresses ->
+            if (addresses.isEmpty()) {
+                throw UnknownHostException("No IPv4 address for $hostname")
+            }
+        }
+}