s_asprintf
s_asprintf(&qnichost, "%s%s", country, QNICHOST_TAIL);
s_asprintf(&nhost, "%.*s",
s_asprintf(&nport, "%s", port);
s_asprintf(&nport, "%.*s",
s_asprintf(&nhost, "%s", ANICHOST);
s_asprintf(&nport, "%s", port);
s_asprintf(&nhost, "%s", try_rir[i].host);
s_asprintf(&nport, "%s", port);