-#ifdef F_GETFL
- int flags;
- flags = fcntl (fd, F_GETFL, 0);
- if (flags < 0)
- return ret;
-
- ret = fcntl (fd, F_SETFL, flags | O_NONBLOCK);
- if (ret < 0)
- return ret;
-#else
- /* XXX: Assume it was blocking before. */
- const int one = 1;
- ret = ioctl (fd, FIONBIO, &one);
- if (ret < 0)
- return ret;
-#endif
- read = gnutls_record_recv (ctx->session, buf + offset,
- bufsize - offset);
+ if (gnutls_record_check_pending (ctx->session) <= 0
+ && select_fd (fd, 0.0, WAIT_FOR_READ) <= 0)
+ read = 0;
+ else
+ read = gnutls_record_recv (ctx->session, buf + offset,
+ bufsize - offset);
+