Description:
------------
When trying to connect to an ssh server that is returning:
ssh_exchange_identification: Connection closed by remote host

My php process hits 100% until I kill the pid, no error is ever returned.

An example would be an ssh server that has your ip in host.deny, although in my case I am having a problem with mikrotik routers that are sometimes bombing on ssh.



Reproduce code:
---------------
$host = "your.ip";
$methods = array(
  'kex' => 'diffie-hellman-group1-sha1',
  'client_to_server' => array(
   'crypt' => '3des-cbc',
   'comp' => 'none'),
  'server_to_client' => array(
   'crypt' => 'aes256-cbc,aes192-cbc,aes128-cbc',
   'comp' => 'none'));
$ssh_con = ssh2_connect($host,22,$methods);

Expected result:
----------------
for $ssh_con to return a connection error.

Actual result:
--------------
no visual response, the process hits 100% CPU usage