198   int fd = *(int *)dtls_get_app_data(ctx);  in send_to_peer()  local
199   return sendto(fd, data, len, MSG_DONTWAIT,  in send_to_peer()
205   int fd;  in dtls_handle_read()  local
211   fd = *(int *)dtls_get_app_data(ctx);  in dtls_handle_read()
213   if (!fd)  in dtls_handle_read()
218   len = recvfrom(fd, buf, MAX_READ_BUF, 0,   in dtls_handle_read()
347   int fd, result;  local
431   fd = socket(dst.addr.sa.sa_family, SOCK_DGRAM, 0);
433   if (fd < 0) {
438   if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on) ) < 0) {
442   flags = fcntl(fd, F_GETFL, 0);
443   if (flags < 0 || fcntl(fd, F_SETFL, flags | O_NONBLOCK) < 0) {
450   if (setsockopt(fd, IPPROTO_IPV6, IPV6_RECVPKTINFO, &on, sizeof(on) ) < 0) {
452   if (setsockopt(fd, IPPROTO_IPV6, IPV6_PKTINFO, &on, sizeof(on) ) < 0) {
462   dtls_context = dtls_new_context(&fd);
477     FD_SET(fd, &rfds);
483     result = select(fd+1, &rfds, &wfds, 0, &timeout);
490       if (FD_ISSET(fd, &wfds))
492       else if (FD_ISSET(fd, &rfds))