int nn_xrespondent_recv (struct nn_sockbase *self, struct nn_msg *msg)
{
int rc;
struct nn_xrespondent *xrespondent;
xrespondent = nn_cont (self, struct nn_xrespondent, sockbase);
/* Get the survey. */
rc = nn_excl_recv (&xrespondent->excl, msg);
if (rc == -EAGAIN)
return -EAGAIN;
errnum_assert (rc >= 0, -rc);
/* Split the survey ID from the body, if needed. */
if (!(rc & NN_PIPE_PARSED)) {
if (nn_slow (nn_chunkref_size (&msg->body) < sizeof (uint32_t))) {
nn_msg_term (msg);
return -EAGAIN;
}
nn_chunkref_term (&msg->hdr);
nn_chunkref_init (&msg->hdr, sizeof (uint32_t));
memcpy (nn_chunkref_data (&msg->hdr), nn_chunkref_data (&msg->body),
sizeof (uint32_t));
nn_chunkref_trim (&msg->body, sizeof (uint32_t));
}
return 0;
}
static int nn_sub_recv (struct nn_sockbase *self, struct nn_msg *msg)
{
int rc;
struct nn_sub *sub;
sub = nn_cont (self, struct nn_sub, sockbase);
/* Loop while a matching message is found or when there are no more
messages to receive. */
while (1) {
rc = nn_excl_recv (&sub->excl, msg);
if (nn_slow (rc == -EAGAIN))
return -EAGAIN;
errnum_assert (rc >= 0, -rc);
rc = nn_trie_match (&sub->trie, nn_chunkref_data (&msg->body),
nn_chunkref_size (&msg->body));
if (rc == 0)
continue;
if (rc == 1)
return 0;
errnum_assert (0, -rc);
}
}
