iOS Domain name resolution

How to do domain name resolution under iOS

Get IP address based on domain name-(nsstring*) Getipwithhostname: (const nsstring*) hostname{    const char *hostn= [HostName utf8string];    struct hostent* phot;        @try {        phot = gethostbyname (HOSTN);            }    @catch (NSException *exception) {        return nil;    }        struct IN_ADDR ip_addr;    memcpy (&IP_ADDR, Phot->h_addr_list[0], 4);    Char ip[20] = {0};    Inet_ntop (af_inet, &ip_addr, IP, sizeof (IP));        nsstring* stripaddress = [NSString Stringwithutf8string:ip];    return stripaddress;}

If you need to import the header file

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

Use

    NSString *string = [self getipwithhostname:@ "www.baidu.com"];    NSLog (@ "%@", string);

iOS Domain name resolution