phpseclib error - connection failed

[joeyrush]

I get the following error when running rocketeer deploy:

PHP Notice: No compatible key exchange algorithms found in phar:///usr/local/bin/rocketeer/vendor/phpseclib/phpseclib/phpseclib/Net/SSH2.php on line 1359

followed by a Rocketeer\Exceptions\ConnectionException

I had no issue deploying a few weeks back but now I get this error regardless of the environment & version of rocketeer that I use. Is it an issue with the server I'm deploying to or the place I'm deploying from? I'm able to SSH in from my terminal fine

[miholeus]

What version of rocketeer do you use? Maybe you should try to update it. Also check if you have passphrase in your keys.

[srottem]

I have the same problem and it occurs regardless of whether using username/password authentication or key/passphrase authentication. I'm running version 2.2.5.

[srottem]

I'm suspicious that the issue is related to the age of some of the Rocketeer dependencies. Rocketeer depends on illuminate/remote ~4.2 which in turn depends on phpseclib/phpseclib 0.3.* , however the current version of phpseclib is 2.0.6. I'm wondering whether perhaps the SSH server I'm connecting to requires a key exchange algo that is not supported by phpseclib 0.3.* but might be supported by a newer version. Unfortunately, since it's illuminate/remote which specifies this dependency I'm not sure what can be done.

[srottem]

It looks like the above is the case: the SSH server I'm connecting to (which I have no control over, unfortunately) doesn't support anything weaker than diffie-hellman-group-exchange-sha256 but phpseclib didn't implement support until after version 0.3.10 (it's in phpseclib/phpseclib#714).

[NeilrAyima]

+1

[LimeUwe]

+1

[tantebootsy]

Hm, the project illuminate/remote seems to be dead. Is there a plan to move away from or continue developing it? Or can anybody provide a manual quickfix for this issue? I've searched for the phrase "phpseclib/phpseclib" within a composer.json on my system but couldn't find it. Pretty odd - where does illuminate/remote hide itself locally?

[LenzLueers]

I had the same issue and solved it by manually forking illuminate/remote and updating it with a recent version (2.*) of phpseclib. I also created a fork of rocketeer 2.2.5 to use my patched library. This works fine for me.

I published the forks on github, feel free to use them AT YOUR OWN RISK or create your own forks until rocketeer comes up with a permanent solution (v3 development branch seems to be working without the illuminate/remote library).

I added these dependencies to my projects composer project:

"require-dev": {
  "rocketeers/rocketeer": "dev-2.2.5-patch",
  "illuminate/remote": "dev-4.2-patch"
},
"repositories": [
  {
    "type": "vcs",
    "url": "https://github.com/lenzlueers/rocketeer.git"
  },
  {
    "type": "vcs",
    "url": "https://github.com/lenzlueers/remote.git"
  } 
],

ps. If someone cared to create real packages, that would be an even better quickfix.