1.IPv6.m和 IPv6.h 放到 Plugins/IOS下

2.建立Socket，程式碼如下:

  1 using UnityEngine;
  2 using System;
  3 using System.Collections;
  4 using System.Net;
  5 using System.Net.Sockets;
  6 
  7 enum EAddressFam : byte
  8 {
  9     IPv4,
 10     IPv6
 11 }
 12 
 13 /// <summary>
 14 /// 建立適配 IPv4 、IPv6 的 Socket
 
 15 /// </summary>
 16 public class TcpSocket
 17 {
 18     public Socket Create(string serverAddress, int nPort)
 19     {
 20         string connectionHost = serverAddress;
 21         string convertedHost = string.Empty;
 22         AddressFamily convertFamily = AddressFamily.InterNetwork;
 23         if
 
 (IsIPAddress(serverAddress))
 24         {
 25             GetIPType(serverAddress, out convertedHost, out convertFamily);
 26             if (string.IsNullOrEmpty(convertedHost))
 27             {
 28                 connectionHost = convertedHost;
 29             }
 30         }
 31         else
 32
 
         {
 33             convertedHost = GetIPAddress(serverAddress, EAddressFam.IPv6);
 34             if (string.IsNullOrEmpty(convertedHost))
 35             {
 36                 convertedHost = GetIPAddress(serverAddress, EAddressFam.IPv4);
 37             }
 38             else
 39             {
 40                 convertFamily = AddressFamily.InterNetworkV6;
 41             }
 42 
 43             if (string.IsNullOrEmpty(convertedHost))
 44             {
 45                 return null;
 46             }
 47             else
 48             {
 49                 connectionHost = convertedHost;
 50             }
 51         }
 52 
 53         IPAddress[] ipAddressArray = Dns.GetHostAddresses(connectionHost);
 54         if (ipAddressArray.Length <= 0)
 55         {
 56             return null;
 57         }
 58 
 59         IPAddress ipAddress = ipAddressArray[0];
 60         AddressFamily addressFamily = AddressFamily.InterNetwork;
 61         if (ipAddress.AddressFamily == AddressFamily.InterNetworkV6)
 62         {
 63             addressFamily = AddressFamily.InterNetworkV6;
 64         }
 65 
 66         Socket socket = new Socket(addressFamily, SocketType.Stream, ProtocolType.Tcp)
 67         {
 68             SendTimeout = 3000,
 69             ReceiveTimeout = 3000,
 70             SendBufferSize = 64 * 1024,
 71             ReceiveBufferSize = 64 * 1024,
 72             NoDelay = true
 73         };
 74 
 75         return socket;
 76     }
 77 
 78     #region IPv6
 79 
 80 #if (UNITY_IOS || UNITY_IPHONE) && !UNITY_EDITOR
 81     private static extern string getIPv6(string host);
 82 #endif
 83 
 84     string GetIPv6(string host)
 85     {
 86 #if (UNITY_IOS || UNITY_IPHONE) && !UNITY_EDITOR
 87         return getIPv6(host);
 88 #else
 89         return host + "&&ipv4";
 90 #endif
 91 
 92     }
 93 
 94     void GetIPType(string serverIp, out string newServerIp, out AddressFamily IPType)
 95     {
 96         IPType = AddressFamily.InterNetwork;
 97         newServerIp = serverIp;
 98         try
 99         {
100             string ipv6 = GetIPv6(serverIp);
101             if (!string.IsNullOrEmpty(ipv6))
102             {
103                 string[] tmp = System.Text.RegularExpressions.Regex.Split(ipv6, "&&");
104                 if (null != tmp && tmp.Length >= 2)
105                 {
106                     string type = tmp[1];
107                     if (type == "ipv6")
108                     {
109                         newServerIp = tmp[0];
110                         IPType = AddressFamily.InterNetworkV6;
111                     }
112                 }
113             }
114         }
115         catch (Exception)
116         {
117             throw;
118         }
119     }
120 
121     string GetIPAddress(string hostName, EAddressFam af)
122     {
123         //基礎作業系統和網路介面卡是否支援 internet 協議的版本 6(ipv6)
124         if (af == EAddressFam.IPv6 && !Socket.OSSupportsIPv6)
125         {
126             return null;
127         }
128 
129         if (string.IsNullOrEmpty(hostName))
130         {
131             return null;
132         }
133 
134         string connetIP = string.Empty;
135         IPHostEntry host;
136 
137         try
138         {
139             host = Dns.GetHostEntry(hostName);
140             foreach (var ip in host.AddressList)
141             {
142                 if (af == EAddressFam.IPv4)
143                 {
144                     if (ip.AddressFamily == AddressFamily.InterNetwork)
145                     {
146                         connetIP = ip.ToString();
147                     }
148                 }
149                 else if (af == EAddressFam.IPv6)
150                 {
151                     if (ip.AddressFamily == AddressFamily.InterNetworkV6)
152                     {
153                         connetIP = ip.ToString();
154                     }
155                 }
156             }
157         }
158         catch (Exception e)
159         {
160             Debug.LogError("GetIPAddress error : " + e.Message);
161         }
162 
163         return connetIP;
164     }
165 
166     //判斷str是域名還是ip
167     bool IsIPAddress(string str)
168     {
169         Match match = Regex.Match(str, @"\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b");
170         return match.Success;
171     }
172 
173     #endregion
174 }