ios中域名转换为ip地址

最新推荐文章于 2018-11-30 14:26:59 发布

原创最新推荐文章于 2018-11-30 14:26:59 发布 · 置顶 · 1.4k 阅读

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CC 4.0 BY-SA版权

本文将演示如何使用Objective-C语言通过网络请求获取指定网站的IP地址，并将其转换为可读的字符串形式。

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#include <netdb.h>
#include <arpa/inet.h>

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    NSString *webSiteString = @"www.baidu.com";
	
    //NSString to char*
	const char *webSite = [webSiteString cStringUsingEncoding:NSASCIIStringEncoding];
    
    // Get host entry info for given host
    struct hostent *remoteHostEnt = gethostbyname(webSite);
    
    // Get address info from host entry
    struct in_addr *remoteInAddr = (struct in_addr *) remoteHostEnt->h_addr_list[0];
    
    // Convert numeric addr to ASCII string
    char *sRemoteInAddr = inet_ntoa(*remoteInAddr);
    
    //char* to NSString
    NSString *ip = [[[NSString alloc] initWithCString:sRemoteInAddr
                                            encoding:NSASCIIStringEncoding] autorelease];
    NSLog(@"ip:%@",ip);
}