unity3d ipv6支持

unity游戏应用提交app stroe需要通过ipv6测试，但是unity本身我没找到可用的接口，所以使用ios插件来处理。

插件的IOSNativeNet.h和IOSNativeNet.m代码：

IOSNativeNet.h

@interface BundleId : NSObject

+(NSString *)getIPv6:(const char*)mHost:(const char*)mPort;

@end

IOSNativeNet.m

#import "IOSNativeNet.h"
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <err.h>
 
#define MakeStringCopy( _x_ ) ( _x_ != NULL && [_x_ isKindOfClass:[NSString class]] ) ? strdup( [_x_ UTF8String] ) : NULL
 
const char* getIPv6(const char* mHost, const char* mPort)
{
    if( nil == mHost )
        return NULL;
    const char *newChar = "No";
    const char *cause = NULL;
    struct addrinfo* res0;
    struct addrinfo hints;
    struct addrinfo* res;
    int n, s;
    
    memset(&hints, 0, sizeof(hints));
    
    hints.ai_flags = AI_DEFAULT;
    hints.ai_family = PF_UNSPEC;
    hints.ai_socktype = SOCK_STREAM;
    
    if((n=getaddrinfo(mHost, "http", &hints, &res0))!=0)
    {
        printf("getaddrinfo error: %s
",gai_strerror(n));
        return NULL;
    }
    
    struct sockaddr_in6* addr6;
    struct sockaddr_in* addr;
    NSString * NewStr = NULL;
    char ipbuf[32];
    s = -1;
    for(res = res0; res; res = res->ai_next)
    {
        if (res->ai_family == AF_INET6)
        {
            addr6 =( struct sockaddr_in6*)res->ai_addr;
            newChar = inet_ntop(AF_INET6, &addr6->sin6_addr, ipbuf, sizeof(ipbuf));
            NSString * TempA = [[NSString alloc] initWithCString:(const char*)newChar 
encoding:NSASCIIStringEncoding];
            NSString * TempB = [NSString stringWithUTF8String:"&&ipv6"];
            
            NewStr = [TempA stringByAppendingString: TempB];
            printf("%s
", newChar);
        }
        else
        {
            addr =( struct sockaddr_in*)res->ai_addr;
            newChar = inet_ntop(AF_INET, &addr->sin_addr, ipbuf, sizeof(ipbuf));
            NSString * TempA = [[NSString alloc] initWithCString:(const char*)newChar 
encoding:NSASCIIStringEncoding];
            NSString * TempB = [NSString stringWithUTF8String:"&&ipv4"];
            
            NewStr = [TempA stringByAppendingString: TempB];            
            printf("%s
", newChar);
        }
        break;
    }
    
    
    freeaddrinfo(res0);
    
    printf("getaddrinfo OK");
    
    NSString * mIPaddr = NewStr;
    return MakeStringCopy(mIPaddr);
}

在unity中C#调用插件的代码：

using System;
using System.Net.Sockets;

namespace SDK.Lib
{
    public class IOSNativeNetImport
    {
        [System.Runtime.InteropServices.DllImport("__Internal")]
        private static extern string getIPv6(string mHost, string mPort);
        //"192.168.1.1&&ipv4"

        public static string GetIPv6(string mHost, string mPort)
        {
#if UNITY_IPHONE && !UNITY_EDITOR
            string mIPv6 = getIPv6(mHost, mPort);
            return mIPv6;
#else
            return mHost + "&&ipv4";
#endif
        }

        static public void getIPType(string serverIp, string serverPorts, out string newServerIp, out AddressFamily mIPType)
        {
            mIPType = AddressFamily.InterNetwork;
            newServerIp = serverIp;

            try
            {
                string mIPv6 = GetIPv6(serverIp, serverPorts);

                if (!string.IsNullOrEmpty(mIPv6))
                {
                    if (SDK.Lib.MacroDef.ENABLE_LOG)
                    {
                        SDK.Lib.Ctx.mInstance.mLogSys.log(string.Format("IOSNativeNetImport::getIPType, mIPv6 not empty, mIPv6 = {0}", mIPv6), SDK.Lib.LogTypeId.eLogNetwork);
                    }

                    string[] m_StrTemp = System.Text.RegularExpressions.Regex.Split(mIPv6, "&&");
                    if (m_StrTemp != null && m_StrTemp.Length >= 2)
                    {
                        if (SDK.Lib.MacroDef.ENABLE_LOG)
                        {
                            SDK.Lib.Ctx.mInstance.mLogSys.log(string.Format("IOSNativeNetImport::getIPType, m_StrTemp not empty, m_StrTemp[1] = {0}", m_StrTemp[1]), SDK.Lib.LogTypeId.eLogNetwork);
                        }

                        string IPType = m_StrTemp[1];
                        if (IPType == "ipv6")
                        {
                            if (SDK.Lib.MacroDef.ENABLE_LOG)
                            {
                                SDK.Lib.Ctx.mInstance.mLogSys.log(string.Format("IOSNativeNetImport::getIPType, IPType is ipv6, m_StrTemp[0] = {0}", m_StrTemp[0]), SDK.Lib.LogTypeId.eLogNetwork);
                            }

                            newServerIp = m_StrTemp[0];
                            mIPType = AddressFamily.InterNetworkV6;
                        }
                        else
                        {
                            if (SDK.Lib.MacroDef.ENABLE_LOG)
                            {
                                SDK.Lib.Ctx.mInstance.mLogSys.log(string.Format("IOSNativeNetImport::getIPType, IPType is not ipv6, m_StrTemp[0] = {0}", m_StrTemp[0]), SDK.Lib.LogTypeId.eLogNetwork);
                            }
                        }
                    }
                    else
                    {
                        if (SDK.Lib.MacroDef.ENABLE_LOG)
                        {
                            SDK.Lib.Ctx.mInstance.mLogSys.log("IOSNativeNetImport::getIPType, m_StrTemp empty", SDK.Lib.LogTypeId.eLogNetwork);
                        }
                    }
                }
                else
                {
                    if (SDK.Lib.MacroDef.ENABLE_LOG)
                    {
                        SDK.Lib.Ctx.mInstance.mLogSys.log("IOSNativeNetImport::getIPType, mIPv6 empty, mIPv6 = {0}", SDK.Lib.LogTypeId.eLogNetwork);
                    }
                }
            }
            catch (Exception e)
            {
                //ClientLog.Instance.Log("GetIPv6 error: " + e);
                if (SDK.Lib.MacroDef.ENABLE_LOG)
                {
                    SDK.Lib.Ctx.mInstance.mLogSys.log(string.Format("IOSNativeNetImport::getIPType, error, exception = {0}", e), SDK.Lib.LogTypeId.eLogNetwork);
                }
            }
        }

        static public void SocketClient(String serverIp, String serverPorts)
        {
            String newServerIp = "";
            AddressFamily newAddressFamily = AddressFamily.InterNetwork;
            getIPType(serverIp, serverPorts, out newServerIp, out newAddressFamily);
            if (!string.IsNullOrEmpty(newServerIp))
            {
                serverIp = newServerIp;
            }

            Socket socketClient = new Socket(newAddressFamily, SocketType.Stream, ProtocolType.Tcp);
            //ClientLog.Instance.Log("Socket AddressFamily: " + newAddressFamily.ToString() + "ServerIp:" + serverIp);
        }
    }
}

最后是通过ip和port连接服务器是调用的方法：

public void Connect(string ip, int port)
        {
            if (SDK.Lib.MacroDef.ENABLE_LOG)
            {
                SDK.Lib.Ctx.mInstance.mLogSys.log(string.Format("SocketChannel::Connect, start, ip = {0} port = {1}", ip, port), SDK.Lib.LogTypeId.eLogNetwork);
            }

            if (!_IsConnected()) {
                string newServerIp = "";
                AddressFamily newAddressFamily = AddressFamily.InterNetwork;

                //var address = Dns.GetHostAddresses(ip)[0];
                SDK.Lib.IOSNativeNetImport.getIPType(ip, port.ToString(), out newServerIp, out newAddressFamily);

                if (SDK.Lib.MacroDef.ENABLE_LOG)
                {
                    //SDK.Lib.Ctx.mInstance.mLogSys.log(string.Format("SocketChannel::Connect, address = {0} AddressFamily = {1}", address, address.AddressFamily), SDK.Lib.LogTypeId.eLogNetwork);
                    SDK.Lib.Ctx.mInstance.mLogSys.log(string.Format("SocketChannel::Connect, curIp = {0} newIp = {1} AddressFamily = {2}", ip, newServerIp, newAddressFamily), SDK.Lib.LogTypeId.eLogNetwork);
                }

                ip = newServerIp;

                //this.socket = new Socket(address.AddressFamily, ProtocolType.Tcp == this.type ?  SocketType.Stream : SocketType.Dgram, this.type);
                //this.socket.BeginConnect(new IPEndPoint(address, port), new AsyncCallback(_ConnectCallback), this.socket);

                this.socket = new Socket(newAddressFamily, ProtocolType.Tcp == this.type ?  SocketType.Stream : SocketType.Dgram, this.type);
                this.socket.BeginConnect(new IPEndPoint(IPAddress.Parse(ip), port), new AsyncCallback(_ConnectCallback), this.socket);

                _NotifyChannelStateChange(ChannelState.CONNECTING);
            } else {
                if (SDK.Lib.MacroDef.ENABLE_LOG)
                {
                    SDK.Lib.Ctx.mInstance.mLogSys.log("SocketChannel::Connect, Connected", SDK.Lib.LogTypeId.eLogNetwork);
                }

                _NotifyChannelStateChange(ChannelState.CONNECTED);
            }
        }

 ios插件如何使用可参照我的前一篇随笔：http://www.cnblogs.com/lan-yt/p/6934155.html