KpyM Telnet/SSH Server - Forum

Unable to connect to SSH server using python/paramiko
Brian	Unable to connect to SSH server using python/paramiko	Apr 15 2010 19:47

I'm trying to connect to a KpyM server I have set up using an SSH library for python (paramiko) that has worked well in the past. I use the following code and get an SSHException. Using Putty, I am able to connect to the same host. I'm hoping it's something very obvious that I'm missing. Any ideas on how to proceed with this? >>> import paramiko >>> ssh = paramiko.SSHClient() >>> ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) >>> ssh.connect(my_host, username=my_username, password=my_password, key_filename=None) Traceback (most recent call last): File "<pyshell#23>", line 1, in -toplevel- ssh.connect(my_host, username=my_username, password=my_password, key_filename=None) File "C:\Python24\lib\site-packages\paramiko\client.py", line 327, in connect self._auth(username, password, pkey, key_filenames, allow_agent, look_for_keys) File "C:\Python24\lib\site-packages\paramiko\client.py", line 481, in _auth raise saved_exception SSHException: No existing session >>>
Kroum Grigorov		May 13 2010 08:23

Just made a quick test running Python 2.6/Paramiko 1.7.5(with the ipv4 fix applied) on Windows against KTS 1.18a it seems to work OK with interactive sessions (SShClient.invoke_shell) I have not tested non interactive sessions but I do NOT expect them to work. Kroum import paramiko import time ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect('127.0.0.1', username='user', password='password', key_filename=None) chan = ssh.invoke_shell(term='vt100', width=80, height=24) time.sleep(3) chan.send('\r\n') time.sleep(3) chan.send('\r\n') chan.recv(1000) time.sleep(5) chan.send('\r\n') chan.recv(1000) chan.send('dir\r\n') time.sleep(1) chan.recv(1000) chan.send('exit\r\n')
Will		Mar 04 2014 16:18

I am also having this same error: >>> import paramiko >>> ssh = paramiko.SSHClient() >>> ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) >>> ssh.connect('172.16.11.141', username=''my_user', password='my_pass') Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Library/Python/2.7/site-packages/paramiko/client.py", line 342, in connect self._auth(username, password, pkey, key_filenames, allow_agent, look_for_keys) File "/Library/Python/2.7/site-packages/paramiko/client.py", line 533, in _auth raise saved_exception paramiko.SSHException: No existing session I am pretty annoyed because I just paid $35 for this and now it does not work at all for my use case. :( I guess I will have to work with freeSSHd after all. I really wanted to use this library...
Angels		Mar 06 2014 11:37

Hello, I have a similar problem with paramiko. I can invoke_shell or exec_command, but I can't read the pipe for none of them. Sometimes I can read the commands sent if I open another instance of python and connect to the same host, invoke_shell and then chan.recv(), but never the responses of the commands I send. Using putty everything works perfect, but I need to run python!! Of course I'm also annoyed to have paid the $35 and not being able to use it!
topin89		May 06 2014 08:22

Looks like KPyM don't support multiple sessions used by exec_command So I have to use terminal emulation import paramiko import time host = '192.168.79.210' user = 'user' secret = 'password' port = 22 client = paramiko.SSHClient() client.set_missing_host_key_policy(paramiko.AutoAddPolicy()) client.connect(hostname=host, username=user, password=secret, port=port) channel=client.get_transport().open_session() #the only session available. Socket-like object channel.get_pty();#Requesting "terminal" time.sleep(5.5); #Yeah, free version channel.send(u'1')#Pressing anykey a=channel.recv(10000); print a.decode('utf-8'); channel.send('dir\r\n') a=channel.recv(10000); print a.decode('utf-8'); channel.send('exit\r\n') a=channel.recv(10000); print a.decode('utf-8'); client.close()
lewl		Jun 29 2015 08:46

lewl