unity-ios包支持ipv6OC代碼

ios包提升必須支持ipv6，代碼如下：

BundleId.h

@interface BundleId : NSObject
+(NSString *)getIPv6 : (const char *)mHost :(const char *)mPort; 
@end

BundleId.m：

#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);
}