HP-UX IPv6 Porting Guide (September 2004)

Sample Client/Server Programs
IPv6 TCP Server using getaddrinfo() for Service Address Lookup
Chapter 1566
IPv6 TCP Server using getaddrinfo() for Service Address
Lookup
This code fragment is part of the example IPv6 server program that ships in the HP-UX 11i v2
/usr/lib/demos/networking/socket/af_inet6 directory, rewritten using the
getaddrinfo() function call.
struct addrinfo *ainfo, *res;
struct addrinfo hints;
/* zero-out the hints before assignment */
memset (&hints, 0, sizeof(hints));
.
hints.ai_family = AF_INET6;
hints.ai_flags = AI_PASSIVE;
hints.ai_socktype = SOCK_STREAM;
error = getaddrinfo(NULL, "example", &hints, &res);
if (error != 0) {
fprintf(stderr, "%s: %s for service 'example'\n",
argv[0], gai_strerror(error));
exit(1);
}
/* Create the listen socket. */
ls = socket (res->ai_family, res->ai_socktype, res->ai_protocol);
if (ls == -1) {
perror(argv[0]);
fprintf(stderr, "%s: unable to create socket\n", argv[0]);
exit(1);
}
/* Bind the listen address to the socket. */
if (bind(ls, res->ai_addr, res->ai_addrlen) == -1) {
perror(argv[0]);
fprintf(stderr, "%s: unable to bind address\n", argv[0]);
close(ls);
exit(1);
}
/* Initiate the listen on the socket so remote users
* can connect. The listen backlog is set to 5, which
* is within the supported range of 1 to 20.
*/
if (listen(ls, 5) == -1) {
perror(argv[0]);