获取iPhone上当前Wi-Fi接入点的IP地址? [英] Get IP address of the current Wi-Fi access point on a iPhone?
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问题描述
我正在尝试从我的 iPhone 连接到在同一网络上运行的套接字服务器在我的电脑上。如何获取运行套接字服务器的计算机的本地 IP地址?
I am trying to connect from my iPhone to a socket server running on the same network on my computer. How can I get the local IP address of the computer that is running the socket server?
推荐答案
#include <netinet/in.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <ifaddrs.h>
- (NSString *)getIPAddress
{
NSString *address = @"error";
struct ifaddrs *interfaces = NULL;
struct ifaddrs *temp_addr = NULL;
int success = 0;
// Retrieve the current interfaces - returns 0 on success
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)
{
// Check if interface is en0 which is the wifi connection on the iPhone
if([[NSString stringWithUTF8String:temp_addr->ifa_name] isEqualToString:@"en0"])
{
// Get NSString from C String
address = [NSString stringWithUTF8String:inet_ntoa(((struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];
}
}
temp_addr = temp_addr->ifa_next;
}
}
// Free memory
freeifaddrs(interfaces);
return address;
}
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