bug#3992: 23.1.50; [Cocoa Emacs] emacsclient can't find server via ssh

bug#3992: 23.1.50; [Cocoa Emacs] emacsclient can't find server via ssh

[bread]

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Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug@gnu.org mailing
list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

Hi,

I've recently moved to MAC OS 10.5 and I compiled Emacs 23 just now,
following instructions
under nextstep.

The bug i found is just like this:

1. Cocoa Emacs was opened on machine A with server-start.

Using emacsclient directly under machine A is just fine.

But, if I use another machine B to ssh login A, and then use emacsclient,
it then told me no server can be found. It's wired because i've opend Emacs
and its server.

The same operations on Emacs under linux is just fine, so i thought maybe
it's a bug related to Cocoa Emacs.

2. Since Step 1 failed, i tried server-file, too.

I adjusted Emacs server to use tcp and with a server name "bread-emacs".

After then, I use B to loginto A via ssh, and invoke

      ./emacsclient --server-file=/Users/bread/.emacs.d/server/bread-emacs
abc

I'll get errors like below:

./emacsclient: connected to remote socket at 255.255.255.255
./emacsclient: connect: Can't assign requested address
./emacsclient: error accessing server file
"/Users/bread/.emacs.d/server/bread-emacs"

And here's the contents in ~/.emacs.d/server/bread-emacs

[0:0:0:0:0:0:0:1]:50461 27746
PbZI|X\h]&R~EdtG5n'2q=t^O.:E@7_py;:wrvaQ{4PBxFi.6o@(.5e\C~#c7aT2


I'm not sure if this is a bug, so, if there's more information needed, plz
let me know.

Thanks.

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/etc/DEBUG
for instructions.


In GNU Emacs 23.1.50.1 (i386-apple-darwin9.7.1, NS apple-appkit-949.46)
 of 2009-07-31 on bread-mac.local
Windowing system distributor `Apple', version 10.3.949
configured using `configure  '--with-ns''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  value of $XMODIFIERS: nil
  locale-coding-system: nil
  default-enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  gud-tooltip-mode: t
  company-mode: t
  senator-minor-mode: t
  which-function-mode: t
  semantic-mru-bookmark-mode: t
  semantic-idle-tag-highlight-mode: t
  semantic-idle-summary-mode: t
  semantic-idle-scheduler-mode: t
  diff-auto-refine-mode: t
  recentf-mode: t
  shell-dirtrack-mode: t
  display-battery-mode: t
  tabbar-mode: t
  auto-image-file-mode: t
  show-paren-mode: t
  server-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
t l m <tab> <return> C-n C-n C-n C-n C-n M-x r e p
o r <tab> <return>

Recent messages:
Loading semantic-decorate-mode...done
Loading gud...done
Restarting server
Loading /Users/bread/.emacs.d/custom.el (source)...done
Loading /Users/bread/.emacs.d/site-lisp/themes/color-theme-blackboard.el
(source)...done
Loading /Users/bread/.emacs.d/site-lisp/themes/color-theme-bread.el
(source)...done
Loading /Users/bread/.emacs.d/site-lisp/themes/color-theme-example.el
(source)...done
Loading /Users/bread/.emacs.d/site-lisp/themes/color-theme-library.el
(source)...done
Loading semanticdb-file...done
For information about GNU Emacs and the GNU system, type C-h C-a.

Load-path shadows:
~/.emacs.d/site-lisp/cedet/speedbar/speedbar hides
/Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/lisp/speedbar
~/.emacs.d/site-lisp/cedet/speedbar/sb-image hides
/Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/lisp/sb-image
/Users/bread/.emacs.d/site-lisp/cedet/common/ezimage hides
/Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/lisp/ezimage
~/.emacs.d/site-lisp/cedet/speedbar/dframe hides
/Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/lisp/dframe


-- 
Zhiqiu Kong (孔直秋)

EDA Labs
Dept. Computer Science & Technology
Tsinghua University
P.R China
100084

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bug#4001: 23.1.50; [Cocoa Emacs] emacsclient can't find server via ssh

[bread]

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I tried again with the following steps:

1. machine A with leopard and Cocoa Emacs, ssh login machine B with Ubuntu
2. use machine B to ssh login back to A
3. trigger emacs

I got emacs opening but also the following errors:

2009-08-01 13:43:37.012 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:42.013 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:47.098 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:52.100 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:57.101 Emacs[370:10b] ****** Returning nil _server
**********
^C2009-08-01 13:43:58.783 Emacs[370:10b] CGSReenableUpdate returned error
268451844
2009-08-01 13:43:58.785 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:58.785 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:58.786 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:58.786 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:58.787 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:58.787 Emacs[370:10b] ****** Returning nil _server
**********
2009-08-01 13:43:58.797 Emacs[370:10b] CGSReenableUpdate returned error
268451844
2009-08-01 13:43:58.797 Emacs[370:10b] ****** Returning nil _server
**********
objc[370]: task_thread failed (result -301)

and I can do nothing on Emacs but force quit.
Hope this helps.

On Fri, Jul 31, 2009 at 4:05 PM, bread <breaddawson@gmail.com> wrote:

> --text follows this line--
>
> Please write in English if possible, because the Emacs maintainers
> usually do not have translators to read other languages for them.
>
> Your bug report will be posted to the emacs-pretest-bug@gnu.org mailing
> list.
>
> Please describe exactly what actions triggered the bug
> and the precise symptoms of the bug:
>
> Hi,
>
> I've recently moved to MAC OS 10.5 and I compiled Emacs 23 just now,
> following instructions
> under nextstep.
>
> The bug i found is just like this:
>
> 1. Cocoa Emacs was opened on machine A with server-start.
>
> Using emacsclient directly under machine A is just fine.
>
> But, if I use another machine B to ssh login A, and then use emacsclient,
> it then told me no server can be found. It's wired because i've opend Emacs
> and its server.
>
> The same operations on Emacs under linux is just fine, so i thought maybe
> it's a bug related to Cocoa Emacs.
>
> 2. Since Step 1 failed, i tried server-file, too.
>
> I adjusted Emacs server to use tcp and with a server name "bread-emacs".
>
> After then, I use B to loginto A via ssh, and invoke
>
>       ./emacsclient --server-file=/Users/bread/.emacs.d/server/bread-emacs
> abc
>
> I'll get errors like below:
>
> ./emacsclient: connected to remote socket at 255.255.255.255
> ./emacsclient: connect: Can't assign requested address
> ./emacsclient: error accessing server file
> "/Users/bread/.emacs.d/server/bread-emacs"
>
> And here's the contents in ~/.emacs.d/server/bread-emacs
>
> [0:0:0:0:0:0:0:1]:50461 27746
> PbZI|X\h]&R~EdtG5n'2q=t^O.:E@7_py;:wrvaQ{4PBxFi.6o@(.5e\C~#c7aT2
>
>
> I'm not sure if this is a bug, so, if there's more information needed, plz
> let me know.
>
> Thanks.
>
> If Emacs crashed, and you have the Emacs process in the gdb debugger,
> please include the output from the following gdb commands:
>     `bt full' and `xbacktrace'.
> If you would like to further debug the crash, please read the file
> /Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/etc/DEBUG
> for instructions.
>
>
> In GNU Emacs 23.1.50.1 (i386-apple-darwin9.7.1, NS apple-appkit-949.46)
>  of 2009-07-31 on bread-mac.local
> Windowing system distributor `Apple', version 10.3.949
> configured using `configure  '--with-ns''
>
> Important settings:
>   value of $LC_ALL: nil
>   value of $LC_COLLATE: nil
>   value of $LC_CTYPE: nil
>   value of $LC_MESSAGES: nil
>   value of $LC_MONETARY: nil
>   value of $LC_NUMERIC: nil
>   value of $LC_TIME: nil
>   value of $LANG: nil
>   value of $XMODIFIERS: nil
>   locale-coding-system: nil
>   default-enable-multibyte-characters: t
>
> Major mode: Emacs-Lisp
>
> Minor modes in effect:
>   gud-tooltip-mode: t
>   company-mode: t
>   senator-minor-mode: t
>   which-function-mode: t
>   semantic-mru-bookmark-mode: t
>   semantic-idle-tag-highlight-mode: t
>   semantic-idle-summary-mode: t
>   semantic-idle-scheduler-mode: t
>   diff-auto-refine-mode: t
>   recentf-mode: t
>   shell-dirtrack-mode: t
>   display-battery-mode: t
>   tabbar-mode: t
>   auto-image-file-mode: t
>   show-paren-mode: t
>   server-mode: t
>   tooltip-mode: t
>   mouse-wheel-mode: t
>   menu-bar-mode: t
>   file-name-shadow-mode: t
>   global-font-lock-mode: t
>   font-lock-mode: t
>   global-auto-composition-mode: t
>   auto-composition-mode: t
>   auto-encryption-mode: t
>   auto-compression-mode: t
>   column-number-mode: t
>   line-number-mode: t
>   transient-mark-mode: t
>
> Recent input:
> t l m <tab> <return> C-n C-n C-n C-n C-n M-x r e p
> o r <tab> <return>
>
> Recent messages:
> Loading semantic-decorate-mode...done
> Loading gud...done
> Restarting server
> Loading /Users/bread/.emacs.d/custom.el (source)...done
> Loading /Users/bread/.emacs.d/site-lisp/themes/color-theme-blackboard.el
> (source)...done
> Loading /Users/bread/.emacs.d/site-lisp/themes/color-theme-bread.el
> (source)...done
> Loading /Users/bread/.emacs.d/site-lisp/themes/color-theme-example.el
> (source)...done
> Loading /Users/bread/.emacs.d/site-lisp/themes/color-theme-library.el
> (source)...done
> Loading semanticdb-file...done
> For information about GNU Emacs and the GNU system, type C-h C-a.
>
> Load-path shadows:
> ~/.emacs.d/site-lisp/cedet/speedbar/speedbar hides
> /Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/lisp/speedbar
> ~/.emacs.d/site-lisp/cedet/speedbar/sb-image hides
> /Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/lisp/sb-image
> /Users/bread/.emacs.d/site-lisp/cedet/common/ezimage hides
> /Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/lisp/ezimage
> ~/.emacs.d/site-lisp/cedet/speedbar/dframe hides
> /Users/bread/codes/download/emacs/nextstep/Emacs.app/Contents/Resources/lisp/dframe
>
>
> --
> Zhiqiu Kong (孔直秋)
>

-- 
Zhiqiu Kong (孔直秋)

EDA Labs
Dept. Computer Science & Technology
Tsinghua University
P.R China
100084

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bug#3992: emacsclient and ssh on MacOS X

[Steven Ihde]

I experienced this problem too.  I found that in my case the problem  
was caused by the setting of $TMPDIR on OS X.

When logging in at the desktop, $TMPDIR is set by launchd to some  
directory under /var/folders.  This doesn't happen when logging in via  
ssh.  Thus, emacsclient on an ssh session is unable to find a server  
started under a desktop session, because they communicate through a  
unix socket located under $TMPDIR.

To fix this, add something like the following to your .profile  
or .bashrc so it is executed when logging in via ssh:

if [ -z "$TMPDIR" ]; then
   export TMPDIR=`getconf DARWIN_USER_TEMP_DIR`
fi

This will set TMPDIR to the same per-user directory as when logging in  
on the desktop.

This fixed the problem for me.