Gnus/nnimap hangs after "login failed"

Gnus/nnimap hangs after "login failed"

[Colin Marquardt]

Hi,

the following problem occurs to me with Emacs 21.1 (and before with
the .105/106 pre-releases) and the rather old gnus-CURRENT-20010813
(I don't feel to secure upgrading my Gnus right now since there seems
to be a lot of stuff going on).

Well, here is the thing:

I recently got my login removed at an IMAP server I used to access.
It still is in my server definition though.

When Gnus starts up, I can press C-g when it wants to connect to
that server, so Gnus skips it, and later, I see it as "denied" in
the Server Buffer. Fine.

However, when getting news the next time, it still tries to access
that server.  If I deny that server manually in the Server Buffer, it
does *not* try to connect to that server again.

Always, if I am fast enough to notice that it wants to connect to that
server, I can interrupt it, even for a while after I get the "login
failed" message in the echo area. If I wait for too long, Gnus just
hangs, and C-g doesn't have any effect.

I am running Emacs in gdb, I can see where it hangs. xbacktrace gives
me:

0x1c3cc8 "accept-process-output"
0x1bca8c "let"
0x1bc968 "or"
0x1bcab8 "while"
0x1c0698 "save-current-buffer"
0x1cbf84 "with-current-buffer"
0xd64d80 "imap-wait-for-tag"
0xd64504 "imap-send-command-wait"
0xd643b8 "imap-ok-p"
0x5146a8c4 Lisp type 5
0x1bcbc4 "funcall"
0x1bc990 "if"
0x1bc9bc "progn"
0x1bc990 "if"
0x1c627c "when"
0x1bcab8 "while"
0x1bca8c "let"
0x1c0698 "save-current-buffer"
0x1cbf84 "with-current-buffer"
0xd64840 "imap-interactive-login"
0xd63860 "imap-login-auth"
0x1bcbc4 "funcall"
0x1bc990 "if"
0x1bc990 "if"
0x1c0698 "save-current-buffer"
0x1cbf84 "with-current-buffer"
0xd67474 "imap-authenticate"
0x1bc990 "if"
0x1bcaa0 "let*"
0x1bc990 "if"
0xec52d8 "nnimap-open-connection"
0x1bc968 "or"
0x1bc990 "if"
0xedeaa4 "nnimap-open-server"
0x1bcbc4 "funcall"
0x1bca8c "let"
0x1bc990 "if"
0x1bca8c "let"
0xc31560 "gnus-open-server"
0x1bcb3c "condition-case"
0x1bc9d4 "prog1"
0x1bc990 "if"
0x1bca8c "let"
0xd44a88 "gnus-check-server"
0x1bc990 "if"
0x1c627c "when"
0x1bca8c "let"
0xd61fdc "gnus-read-active-file-1"
0x1bcb3c "condition-case"
0x1bc990 "if"
0x1c88f8 "unless"
0x1bcab8 "while"
0x1beecc "save-excursion"
0x1bca8c "let"
0xbc2e54 "gnus-read-active-file"
0x1bc9bc "progn"
0x1bc990 "if"
0x1bca8c "let"
0xd51828 "gnus-group-get-new-news"
0x1beeec "call-interactively"


I'll happily admit that I had another problem with C-g not quitting
a hanging Emacs just until yesterday, but that had something to do
with my X libs (Xaw3d I guess). I have since re-built Emacs and my
original C-g problem has gone away.

Now, could just remove that server from my list, but that doesn't
help in cases where a server is inaccessible temporarily.

Any advice?

TIA,
  Colin