static void nn_ctcp_start_resolving (struct nn_ctcp *self)
{
const char *addr;
const char *begin;
const char *end;
int ipv4only;
size_t ipv4onlylen;
/* Extract the hostname part from address string. */
addr = nn_epbase_getaddr (&self->epbase);
begin = strchr (addr, ';');
if (!begin)
begin = addr;
else
++begin;
end = strrchr (addr, ':');
nn_assert (end);
/* Check whether IPv6 is to be used. */
ipv4onlylen = sizeof (ipv4only);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_IPV4ONLY,
&ipv4only, &ipv4onlylen);
nn_assert (ipv4onlylen == sizeof (ipv4only));
/* TODO: Get the actual value of IPV4ONLY option. */
nn_dns_start (&self->dns, begin, end - begin, ipv4only, &self->dns_result);
self->state = NN_CTCP_STATE_RESOLVING;
}
static void nn_cws_start_resolving (struct nn_cws *self)
{
int ipv4only;
size_t ipv4onlylen;
char *host;
/* Check whether IPv6 is to be used. */
ipv4onlylen = sizeof (ipv4only);
nn_epbase_getopt (&self->epbase, NN_SOL_SOCKET, NN_IPV4ONLY,
&ipv4only, &ipv4onlylen);
nn_assert (ipv4onlylen == sizeof (ipv4only));
host = nn_chunkref_data (&self->remote_host);
nn_assert (strlen (host) > 0);
nn_dns_start (&self->dns, host, self->remote_hostname_len, ipv4only,
&self->dns_result);
self->state = NN_CWS_STATE_RESOLVING;
}