Brian Utterback <brian.utterb...@oracle.com> wrote: > On 11/19/2013 3:40 PM, Danny Mayer wrote: >> You should not be using literal IP addresses of either flavor without >> also setting the AI_NUMERICHOST flag otherwise it tries to do a DNS >> lookup. That's poorly written code otherwise. >> >> Danny > > Not so. The getaddrinfo function will recognize literal addresses and > merely convert them. The point is that for something like ssh or any > other network utility, the user is supposed to give a hostname, but in > virtually all cases you can give a literal address and the application > does not have to treat it differently. If you read the ipng mailing > list, you will see that they were trying to make the whole process of > writing a network application simpler, with getaddrinfo doing the heavy > lifting for all of the major cases. At the same time they were trying to > allow applications to work on either IPv4 or IPv6 systems without > changing them, or dual stack or any combination. But no matter what they > did there were edge cases that needed to work differently. > > Brian Utterback
Well most of it was successfull, I converted an application from the old functions to getaddrinfo/getnameinfo etc, and it really is more convenient to program for. However, what I don't understand is why an IPv6 address does not fit into a struct sockaddr, and why this fact is so badly documented. It took me a lot of time to find why my queried IPv6 addresses were truncated. _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions