bug#49449: 28: TLS connection never gets to "open" stage

[Lars Ingebrigtsen]

Mattias Engdegård <mattiase@acm.org> writes:

> 10 juli 2021 kl. 18.27 skrev Lars Ingebrigtsen <larsi@gnus.org>:
>
>> Hm...  does reverting 234bf1b6363a3d5db8e73c422d87a0bf1aa4b2e3 help any
>> here?
>
> No, sorry. (Was worth a shot, though!)

Darn!  Well, back to your patch:

-  while ((ret = gnutls_handshake (state)) < 0)
+  if (non_blocking && proc->gnutls_handshakes_tried < 1)
     {
-      if (emacs_gnutls_handle_error (state, ret) == 0) /* fatal */
-       break;
+      /* HACK: don't succeed the first time for nonblocking connections,
+        because the logic doesn't allow it (bug#49449).  */
+      ret = GNUTLS_E_AGAIN;

I'm not super enthusiastic about this -- it'll artificially make
connections slower?  The problem only seems to occur on Macos, so
it'd be interesting to find out why it doesn't happen on Linux...

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no