【发布时间】：2016-10-14 11:20:25
【问题描述】：
在过去的几天里，我收到了 Apple 对我的应用程序的以下拒绝。我的应用程序与 UDP 通信，远程服务器始终是 IPv4。我使用过 BSD 套接字。请指导我如何解决这个问题。
我尝试使用 IPv4 网络创建 NAT64 热点，但无法向服务器发送任何数据包。此外，我们现在没有可用的 IPv6。
来自苹果：
2.2 详情
在运行 iOS 9.3.2 的 iPad 和运行 iOS 9.3.2 的 iPhone 上同时通过 Wi-Fi 和蜂窝网络进行审查时，我们发现您的应用存在一个或多个错误。
具体来说，在审核期间，我们无法绕过 Initializing 页面。我们在等待应用加载时遇到错误。我们附上了截图供您参考。
接下来的步骤
请在设备上运行您的应用以确定问题，然后修改并重新提交您的应用以供审核。
在 IPv6 网络上审核应用程序。请确保您的应用支持 IPv6 网络，因为需要兼容 IPv6。
有关支持 IPv6 网络的更多信息，请参阅支持 iPv6 DNS64/NAT64 网络。
源代码如下：
UdpSocketManager.h >>
#ifndef UDP_SOCKET_MANAGER_H__
#define UDP_SOCKET_MANAGER_H__
#import "TInetAddr.h"
class UdpSocketManager
{
public:
UdpSocketManager();
~UdpSocketManager();
void getLocalAddress();
void initializeSocket();
void start();
void stop();
void sendSignal(int p_type, TInetAddr *p_destAddress, unsigned char *p_data, int p_length);
void receiveSignal();
int localPort;
int signalingSocket;
int signalSocketRecvLength;
int socketFamily;
int isIPV4Available;
int isIPV6Available;
char wifiIP[INET_ADDRSTRLEN];
char cellularIP[INET_ADDRSTRLEN];
char wifiIP_v6[INET6_ADDRSTRLEN];
char cellularIP_v6[INET6_ADDRSTRLEN];
long returnLength;
struct sockaddr_in remoteAddrForRecv;
struct sockaddr_in srcAddrV4;
struct sockaddr_in6 srcAddrV6;
struct sockaddr_in sendAddr4;
struct sockaddr_in6 sendAddr6;
bool running;
pthread_t thread;
};
#endif
UdpSocketManager.m >>
#include <string.h>
#include <pthread.h>
#include <ifaddrs.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include "UdpSocketManager.h"
#import <Foundation/Foundation.h>
unsigned int ipAddressToUnsignedInt(char *ipAddress)
{
unsigned int ipAddressLongValue = 0L;
int byteSegment = 0;
for(int i = 0; i < strlen(ipAddress); i++)
{
char ch = ipAddress[i];
if(ch == '.')
{
ipAddressLongValue <<= 8;
ipAddressLongValue |= byteSegment;
byteSegment = 0;
}
else
{
byteSegment = byteSegment * 10 + (ch - 48);
}
}
ipAddressLongValue <<= 8;
ipAddressLongValue |= byteSegment;
return ipAddressLongValue;
}
int custom_random(int max=65535)
{
int randomValue;
randomValue = arc4random_uniform(65535)%max;
return randomValue;
}
int custom_random(int min, int max)
{
int randomValue;
randomValue = arc4random_uniform(max);
if(randomValue<min)
randomValue=(min+custom_random(max-min));
return randomValue;
}
void* runUdpSocketManager(void *objRef)
{
UdpSocketManager *THIS = (UdpSocketManager *) objRef;
THIS->running=true;
while (THIS->running)
{
THIS->receiveSignal();
}
pthread_exit(NULL);
return 0;
}
UdpSocketManager::UdpSocketManager()
{
socketFamily=AF_INET;
signalingSocket=-1;
running=false;
initializeSocket();
}
UdpSocketManager::~UdpSocketManager()
{
}
void UdpSocketManager::getLocalAddress()
{
//Read local address
getLocalAddress();
struct ifaddrs *interfaces = NULL;
struct ifaddrs *temp_addr = NULL;
int success=0;
isIPV4Available=FALSE;
isIPV6Available=FALSE;
success = getifaddrs(&interfaces);
if (success == 0)
{
// Loop through linked list of interfaces
temp_addr = interfaces;
while(temp_addr != NULL)
{
if(temp_addr->ifa_addr->sa_family==AF_INET)
{
if([[NSString stringWithUTF8String:temp_addr->ifa_name] hasPrefix:@"en"])
{
isIPV4Available=TRUE;
strcpy(wifiIP, inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr));
printf("IP Address: %s\n",inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr));
}
else if([[NSString stringWithUTF8String:temp_addr->ifa_name] hasPrefix:@"pdp_ip0"])
{
isIPV4Available=TRUE;
strcpy(cellularIP, inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr));
printf("IP Address: %s\n",inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr));
}
}
else if(temp_addr->ifa_addr->sa_family==AF_INET6)
{
if([[NSString stringWithUTF8String:temp_addr->ifa_name] hasPrefix:@"en"])
{
isIPV6Available=TRUE;
inet_ntop(AF_INET6, &(((struct sockaddr_in6 *)temp_addr->ifa_addr)->sin6_addr), (char*)wifiIP_v6, INET6_ADDRSTRLEN);
printf("Interface: %s IPV6: %s\n",temp_addr->ifa_name,wifiIP_v6);
}
else if([[NSString stringWithUTF8String:temp_addr->ifa_name] hasPrefix:@"pdp_ip0"])
{
isIPV6Available=TRUE;
inet_ntop(AF_INET6, &(((struct sockaddr_in6 *)temp_addr->ifa_addr)->sin6_addr), (char*)cellularIP_v6, INET6_ADDRSTRLEN);
printf("Interface: %s IPV6: %s\n",temp_addr->ifa_name,cellularIP_v6);
}
}
temp_addr = temp_addr->ifa_next;
}
}
freeifaddrs(interfaces);
}
void UdpSocketManager::initializeSocket()
{
if(signalingSocket!=-1)
close(signalingSocket);
if (isIPV4Available)
{
if((signalingSocket=socket(AF_INET, SOCK_DGRAM, 0))==-1)
{
NSLog(@"Unable to create signaling socket of AF_INET");
}
else
{
socketFamily=AF_INET;
NSLog(@"Socket created successfully. [AF_INET]");
}
}
else if(!isIPV4Available && isIPV6Available)
{
if((signalingSocket=socket(AF_INET6, SOCK_DGRAM, 0))==-1)
{
NSLog(@"Unable to create signaling socket of AF_INET6");
}
else
{
socketFamily=AF_INET6;
NSLog(@"Socket created successfully. [AF_INET6]");
}
}
else
{
if((signalingSocket=socket(AF_INET, SOCK_DGRAM, 0))==-1)
{
NSLog(@"Unable to create signaling socket of AF_INET");
}
else
{
socketFamily=AF_INET;
NSLog(@"Socket created successfully. [AF_INET]");
}
}
int count=0;
while(true)
{
count++;
if(socketFamily==AF_INET)
{
srcAddrV4.sin_len = sizeof(srcAddrV4);
srcAddrV4.sin_family = socketFamily;
srcAddrV4.sin_addr.s_addr = INADDR_ANY;
srcAddrV4.sin_port = htons(localPort);
if (bind(signalingSocket, (struct sockaddr *) &srcAddrV4, sizeof(srcAddrV4)) < 0)
{
NSLog(@"[AF_INET] ERROR occured creating signaling port at attempt (%d) Port: %d", count, localPort);
localPort=(int)custom_random(1024, 65535);
}
else
{
int on=1;
setsockopt(signalingSocket, SOL_SOCKET, SO_NOSIGPIPE, (void *)&on, sizeof(on));
setsockopt(signalingSocket, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on));
NSLog(@"[AF_INET] SignalingSocket Created Successfully at attempt (%d) Port: %d\n", count, localPort);
break;
}
}
else
{
srcAddrV6.sin6_len = sizeof(srcAddrV6);
srcAddrV6.sin6_family = socketFamily;
srcAddrV6.sin6_addr = in6addr_any;
srcAddrV6.sin6_port = htons(localPort);
if (bind(signalingSocket, (struct sockaddr *) &srcAddrV6, sizeof(srcAddrV6)) < 0)
{
NSLog(@"[AF_INET] ERROR occured creating signaling port at attempt (%d) Port: %d", count, localPort);
localPort=(int)custom_random(1024, 65535);
}
else
{
int on=1;
setsockopt(signalingSocket, SOL_SOCKET, SO_NOSIGPIPE, (void *)&on, sizeof(on));
setsockopt(signalingSocket, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on));
NSLog(@"[AF_INET6] SignalingSocket Created Successfully at attempt (%d) Port: %d\n", count, localPort);
break;
}
}
}
}
void UdpSocketManager::start()
{
pthread_create(&thread, NULL, runUdpSocketManager, (void *) this);
}
void UdpSocketManager::stop()
{
running=false;
}
void UdpSocketManager::receiveSignal()
{
int port;
char ipAddress[16];
socklen_t fromlen;
unsigned char udpSignalRecvBuffer[1600];
fromlen = sizeof(remoteAddrForRecv);
signalSocketRecvLength = (int)recvfrom(signalingSocket, (char *)udpSignalRecvBuffer,1600,0,(struct sockaddr *)&remoteAddrForRecv,&fromlen);
if(signalSocketRecvLength>0)
{
strcpy(ipAddress, inet_ntoa(remoteAddrForRecv.sin_addr));
port = ntohs(remoteAddrForRecv.sin_port);
NSLog(@"RECEIVED %d bytes from %s:%d", signalSocketRecvLength, ipAddress, port);
}
else
{
usleep(10000);// 10 ms
}
}
void UdpSocketManager::sendSignal(int p_type, TInetAddr *p_destAddress, unsigned char *p_data, int p_length)
{
if(socketFamily==AF_INET6)
{
// Convert IPv4 address to IPv4-mapped-into-IPv6 address.
sendAddr6.sin6_family = AF_INET6;
sendAddr6.sin6_port = p_destAddress->m_port;
sendAddr6.sin6_addr.__u6_addr.__u6_addr32[0] = 0;
sendAddr6.sin6_addr.__u6_addr.__u6_addr32[1] = 0;
sendAddr6.sin6_addr.__u6_addr.__u6_addr32[2] = htonl(0xffff);
sendAddr6.sin6_addr.__u6_addr.__u6_addr32[3] = ntohl(ipAddressToUnsignedInt(p_destAddress->m_address));
sendAddr6.sin6_addr.__u6_addr.__u6_addr16[4] = 0;
sendAddr6.sin6_addr.__u6_addr.__u6_addr16[5] = 0xffff;
char ipV6Address[INET6_ADDRSTRLEN];
inet_ntop(AF_INET6, &sendAddr6.sin6_addr, ipV6Address, INET6_ADDRSTRLEN);
NSLog(@"ipV6Address: %s\n", ipV6Address);
sendAddr6.sin6_flowinfo = 0;
sendAddr6.sin6_scope_id = 0;
}
else
{
sendAddr4.sin_family = AF_INET;
sendAddr4.sin_port = htons(p_destAddress->m_port);
if(inet_aton((char *) p_destAddress->m_address, &sendAddr4.sin_addr)==0)
{
NSLog(@"signal message - inet_aton() failed, %s", p_destAddress->m_address);
}
}
if(socketFamily==AF_INET)
returnLength=sendto(signalingSocket, p_data, p_length, 0, (struct sockaddr *)&sendAddr4, sizeof(sendAddr4));
else
returnLength=sendto(signalingSocket, p_data, p_length, 0, (struct sockaddr *)&sendAddr6, sizeof(sendAddr6));
NSLog(@"SENT %ld bytes to %s:%d\n", returnLength,p_destAddress->m_address,p_destAddress->m_port);
}
【问题讨论】：
-
"我尝试使用 IPV4 网络创建热点 NAT64，但无法向服务器发送任何数据包。"这就是问题所在。在您将其提交到 App Store 之前，它需要在 NAT64 环境中运行。
-
当你在socket上发送东西时，你需要给它一个地址结构。你从哪里得到这个地址？
-
@user102008: 还有this: "在 WWDC 2015 上，我们宣布在 iOS 9 中过渡到仅 IPv6 的网络服务......如果您的应用使用 IPv4 特定的 API 或硬-编码的 IP 地址，您需要进行一些更改"
-
您已表明您无权访问 IPv6 网络来对此进行测试，Maverick。我认为这是您需要解决的第一件事 - 您无法猜测解决方案并将其重新提交给 Apple，希望它能够正常工作。如果引入错误会发生什么？
-
@RemyLebeau，当 Apple 说“iOS 9 将支持 IPv6-only 网络服务”时，并不是指“ iOS 9 将仅支持 IPv6 网络服务。" Apple 的要求是，其商店中的任何应用程序都必须在纯 IPv6 网络上运行，而不是排他性地。
标签： ios iphone sockets networking ipv6