#27 SSH issue with OS X 10.11

[J Witt]

When trying to initiate a VNC session over an SSH tunnel through Chicken you will see the following error:

Command line:
Chicken[1095:26855] Unknown message from ssh error: Bad local forwarding specification '5910/x.x.x.x/5934'

GUI window:
Could not establish an SSH connection to server <servername>
The ssh program quit unexpectedly</servername>

It looks like Chicken is using / to separate the SSH port from IP and the most recent version of SSH included with OSX no longer supports that.

[dustinac]

Thanks for the bug report. You're right that the newer versions of OpenSSH seem to have dropped support for the port/address/port forwarding specifications. I will fix this for version 2.2. In the meantime, I think the only workaround is to set-up the ssh tunnel by hand in Terminal if you're using OS X 10.11.

[AJAYN]

Any chance of getting a patch or update with this fix?

[Erich Boleyn]

Hi all, I saw this problem with my wife using Chicken on her Macbook Air, and since I didn't have the old tools set up to build Chicken with, I figured I'd see if I could patch the binary executable by changing the internal printf strings from "%d/%@/%d" to "%d:%@:%d".

Well, what do you know, it worked great. It should be backwards compatible with old MacOS X as well, since the ":" notation has been supported on ssh for a long time.

Anyway, I'm attaching the hacked binary (a total of 4 bytes changed, the string appears twice, and there are two changes to the string in each one) for all to enjoy. You just replace the file "/Applications/Chicken.app/Contents/MacOS/Chicken" with the new one (calling it "Chicken" still), and it worked for me.

Enjoy all.

[Ritu Sangha]

Thank you Erich.
Works like a charm.
(remember to chown +x Chicken)

[Jean-Michel Mignot]

rather: chmod u+x Chicken

[Ritu Sangha]

Thank you for the correction,

Jean-Michel

I should have done that myself. :)

Sent from my iPhone

On Jun 4, 2016, at 6:29 AM, Jean-Michel Mignot jmig@users.sf.net wrote:
rather: chmod u+x Chicken

[bugs:#27] SSH issue with OS X 10.11

Status: open
Labels: ssh
Created: Thu Aug 20, 2015 06:03 PM UTC by J Witt
Last Updated: Sat May 21, 2016 02:57 AM UTC
Owner: nobody

When trying to initiate a VNC session over an SSH tunnel through Chicken you will see the following error:

Command line:
Chicken[1095:26855] Unknown message from ssh error: Bad local forwarding specification '5910/x.x.x.x/5934'

GUI window:
Could not establish an SSH connection to server <servername>
The ssh program quit unexpectedly</servername>

It looks like Chicken is using / to separate the SSH port from IP and the most recent version of SSH included with OSX no longer supports that.

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[Anssi Johansson]

Thanks, the patched Chicken works nicely. For those who are afraid of using random binaries posted on the Internet, I verified that nothing else apart from those strings were changed. I checked this by running "xxd Chicken > old.txt; xxd Chicken_new > new.txt; diff old.txt new.txt".

[Csaba]

Unfortunately, this patch no longer works on OS X 10.12 because the OS detects it as being from an unidentified developer.

[Eileen]

Erich, THANK YOU so much. You saved me lugging a second linux laptop all over Europe so that I could get work done. Thank you.

[Jean-Michel Mignot]

My Chicken is back! Thanks a lot