一.Ios过审的Ipv6问题
IOS官方返回的的报文中包含IPv6的文字,说明是App不兼容Ipv6网络地址引起的,确保App在Ipv6的环境下能够正常运行。
二.什么是Ipv6
IPV6,是对IPV4地址空间的扩充。目前当我们用iOS设备连接上Wifi、4G、3G等网络时,设备被分配的地址均是IPV4地址,但是随着运营商和企业逐渐部署IPV6 DNS64/NAT64网络之后,设备被分配的地址会变成IPV6的地址,而这些网络就是所谓的IPV6-Only网络,并且仍然可以通过此网络去获取IPV4地址提供的内容。客户端向服务器端请求域名解析,首先通过DNS64 Server查询IPv6的地址,如果查询不到,再向DNS Server查询IPv4地址,通过DNS64 Server合成一个IPV6的地址,最终将一个IPV6的地址返回给客户端。
三.如何解决
苹果审核Ipv6的标准是确保应用在Ipv6的环境下能够正常运行
Ipv6网络下的客户端是不能连接Ipv4的服务端的,需要通过DNS64或者NAT64的转换地址
DNS64/NAT64是苹果提供的转换通道,不需要开发者去考虑这个问题 ,只需要在发送连接请求时,根据当前网络环境去转换实际的连接地址,例如Ipv6,需要通过调用IOS官方提供的转换通道请求实际的连接地址
四.编写Ios地址转换的接口
新建两个记事本,并把名称带后缀分别修改成ipv6.h和ipv6.m,ipv6为名称(可以自定义)
编辑ipv6.h,输入以下代码
@interface BundleId : NSObject
+(NSString *)getIPv6 : (const char *)mHost :(const char *)mPort;
@end
编辑ipv6.m,输入以下代码
#import "BundleId.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\n",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\n", 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\n", newChar);
}
break;
}
freeaddrinfo(res0);
printf("getaddrinfo OK");
NSString * mIPaddr = NewStr;
return MakeStringCopy(mIPaddr);
}
保存ipv6.m和ipv6.h,并把它们放在Unity的Plugins/IOS的目录下
五.结合编辑的工具,解决Ipv6问题
编辑DNSParse.cs,输入以下代码,调用上一步编辑的接口
//调用工具的接口
#if UNITY_IPHONE
[DllImport("__Internal")]
private static extern string getIPv6(string mHost, string mPort);
#endif
/// <summary>
/// 获取Ipv6地址,地址格式为"192.168.1.1&&ipv4"用于解析地址
/// </summary>
/// <param name="mHost">域名</param>
/// <param name="mPort">端口</param>
/// <returns></returns>
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
}
/// <summary>
/// 解析地址
/// </summary>
/// <param name="serverIp">域名</param>
/// <param name="serverPorts">端口</param>
/// <param name="newServerIp">输出新的地址</param>
/// <param name="mIPType">网络类型</param>
public static void PareseIP(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))
{
string[] m_StrTemp = System.Text.RegularExpressions.Regex.Split(mIPv6, "&&");
if (m_StrTemp != null && m_StrTemp.Length >= 2)
{
string IPType = m_StrTemp[1];
if (IPType == "ipv6")
{
newServerIp = m_StrTemp[0];
mIPType = AddressFamily.InterNetworkV6;
}
}
}
}
catch (Exception e)
{
Debug.Log("解析出错,错误类型:"+e.Message);
}
}
查询NetworkInterface.cs脚本(Kbengine客户端导出包中的类),定位到connectTo的方法,修改如下
public void connectTo(string ip, int port, ConnectCallback callback, object userData)
{
if (valid())
throw new InvalidOperationException("Have already connected!");
string newServerIp = "";
AddressFamily newAddressFamily = AddressFamily.InterNetwork;
//解析是否是Ipv6地址,如果是返回Ipv6地址,如果不是保持原来地址不变
DNSParase.PareseIP(ip, port.ToString(), out newServerIp, out newAddressFamily);
if (!string.IsNullOrEmpty(newServerIp)) { ip = newServerIp; }
Dbg.DEBUG_MSG("获取的Ip:"+ip+" 协议:"+newAddressFamily);
_socket = new Socket(newAddressFamily, SocketType.Stream, ProtocolType.Tcp);
_socket.SetSocketOption(System.Net.Sockets.SocketOptionLevel.Socket, SocketOptionName.ReceiveBuffer, KBEngineApp.app.getInitArgs().getRecvBufferSize() * 2);
_socket.SetSocketOption(System.Net.Sockets.SocketOptionLevel.Socket, SocketOptionName.SendBuffer, KBEngineApp.app.getInitArgs().getSendBufferSize() * 2);
_socket.NoDelay = true;
//_socket.Blocking = false;
ConnectState state = new ConnectState();
state.connectIP = ip;
state.connectPort = port;
state.connectCB = callback;
state.userData = userData;
state.socket = _socket;
state.networkInterface = this;
Dbg.DEBUG_MSG("connect to " + ip + ":" + port + " ...");
connected = false;
// 先注册一个事件回调,该事件在当前线程触发
Event.registerIn("_onConnectionState", this, "_onConnectionState");
var v = new AsyncConnectMethod(this._asyncConnect);
v.BeginInvoke(state, new AsyncCallback(this._asyncConnectCB), state);
}
注意事项,网络通信使用域名连接
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