IOS domain name resolution

Source: Internet
Author: User

IOS domain name resolution

How to resolve domain names in iOS

 

// Obtain the IP address (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 stringwithuf8string: ip]; return strIPAddress ;}

Before importing the header file

 

 

# Include

 
  
# Include

  
   
# Include

  

 

Use

 

 

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


 

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