Unity ipv6的兼容适配（iOS） Scoket

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做了一个产品，在ios审核上架的时候biej被拒了如下：

Guideline 2.1 - Performance - App Completeness

We discovered one or more bugs in your app when reviewed on iPhone running iOS 11.4.1 on Wi-Fi connected to an IPv6 network.Specifically, when we tapped on the log in button, no further action took place.

意思是说应用在ipv6的环境下不能登录。

然后我们就要找解决方案了：

之前的scoket连接建立，AddressFamily.InterNetwork是ipv4的网络

     /// 端口号
        public void CreateConnection(string serverAddress, int port)
        {
            if (scoket != null && scoket.Connected)
            {
                return;
            }
            try
            {
                this.scoket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                this.scoket.NoDelay = true;
                IPEndPoint end_point = new IPEndPoint(IPAddress.Parse(serverAddress), port);
                this.scoket.BeginConnect(end_point, new AsyncCallback(this.Connected), this.scoket);
            }
            catch (Exception e)
            {
               Debuger.Log( e.Message);
            }
         
        }

我们需要检测当前网络环境类型并做兼容处理如下

   /// 端口号
        public void CreateConnection(string serverAddress, int port)
        {
            if (scoket != null && scoket.Connected)
            {
                return;
            }
            try
            {
                IPAddress[] address = Dns.GetHostAddresses(serverAddress);
                if (address[0].AddressFamily == AddressFamily.InterNetworkV6)
                {
                    Debug.Log("Connect InterNetworkV6");
                    scoket = new Socket(AddressFamily.InterNetworkV6, SocketType.Stream, ProtocolType.Tcp);
                }
                else
                {
                    Debug.Log("Connect InterNetwork");
                    scoket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                }
                this.scoket.NoDelay = true;
                IPEndPoint end_point = new IPEndPoint(IPAddress.Parse(serverAddress), port);
                this.scoket.BeginConnect(end_point, new AsyncCallback(this.Connected), this.scoket);
            }
            catch (Exception e)
            {
               Debuger.Log( e.Message);
            }
         
        }

 IPAddress[] address = Dns.GetHostAddresses(serverAddress);我们可以知道当前网络环境类型，然后创建对应连接的scoket

以上对ipv6的网络适配有一个前提就是 服务器也必须能支持ipv6的网络传输不然一切都是空谈 点击这里 了解如何配置ipv6的测试环境https://blog.csdn.net/qq_37310110/article/details/81905709  

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