如何以编程方式获取iphone的ip地址 [英] how to get ip address of iphone programmatically
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问题描述
我使用 Mongoose 在iphone中启动并运行了一个网络服务器。但问题是如何让我的iphone / ipad的IP地址让用户知道他们可以访问服务器的位置。我发现 [NSHost地址]
可以完成这项工作,但我正在为app store开发,这是未记录的方法。
I got a webserver up and running in iphone by using Mongoose. But the problem is how can I get the ip address of my iphone/ipad to let the user's know where they can access the server. I found that [NSHost addresses]
can do the job but I am developing for app store and this is undocumented method.
推荐答案
#include <ifaddrs.h>
#include <arpa/inet.h>
// Get the INTERNAL ip address
- (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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