[ds6-devel] gethostbyaddr() problem

[Kirk Bollinger]

On Thu, 15 May 2003, Mauro Tortonesi wrote:
> inet_ntop(AF_INET6, &sin6, buf, sizeof(buf) - 1);
> buf[sizeof(buf) - 1] = '\0';
> 
> becomes:
> 
> getnameinfo(&sin6, sizeof(sin6), buf, sizeof(buf) - 1,
>             NULL, 0, NI_NUMERICHOST);
> buf[sizeof(buf) - 1] = '\0';
> 
> 
> and:
> 
> 
> inet_pton(AF_INET6, buf, &sin6);
> 
> becomes:
> 
> getaddrinfo(buf, "ftp", &hints, &res);
> 
> the address you were looking for is in:
> 
> ((struct sockaddr_in6 *)res->ai_addr)->sin6_addr;


thanks for the help!

now, I have one more thing I can't get to work. I want to print out the 
addresses in ascii. I know that inet_ntop() is discouraged but it should 
work. 

here's my code:
if (res->ai_family == AF_INET6)
      {
        printf("\nAddress family: AF_INET6");
        //printf("\nThe address is: %s", ((struct sockaddr_in6 
*)res->ai_addr)->sin6_addr);
        
        printf("\nnet_byte_order in hex is: %x", ((struct sockaddr_in6 
*)res->ai_addr)->sin6_addr);
        memset(&sin6, 0, sizeof(struct sockaddr_in6));  
        memcpy(&sin6, (struct sockaddr_in6 *)res->ai_addr, sizeof(struct 
sockaddr_in6));        
        inet_ntop(AF_INET6, &sin6.sin6_addr, buf, 16);
        
        printf("\nAddress is: %s", buf);

here's the output I'm getting:
Address family: AF_INET6
net_byte_order in hex is: 105fe3f
Address is: 

I'm having fun playing and learning. 

-kirk