Open a Forwarded Channel through an SSH Tunnel

See more Socket/SSL/TLS Examples

Demonstrates Socket.SshNewChannel, which opens a port-forwarded channel through an authenticated SSH tunnel to a destination host and port, populating a Socket with the connected channel.

require 'chilkat'

success = false

socket = Chilkat::CkSocket.new()

#  Connect to the SSH server and initialize an SSH tunneling session.  Port 22 is conventional but
#  not required.
success = socket.SshOpenTunnel("ssh.example.com",22)
if (success == false)
    print socket.lastErrorText() + "\n";
    exit
end

#  Authenticate the SSH session before opening forwarded channels.
#  The SSH password should come from a secure source rather than being hard-coded.
sshPassword = "mySshPassword"
success = socket.SshAuthenticatePw("sshUser",sshPassword)
if (success == false)
    print socket.lastErrorText() + "\n";
    exit
end

#  Open a port-forwarded channel through the authenticated SSH tunnel to the destination host and
#  port, populating a Socket with the connected channel.  Set the 3rd argument to true to establish
#  TLS to the destination inside the tunnel.
bTls = false
maxWaitMs = 20000
channel = Chilkat::CkSocket.new()
success = socket.SshNewChannel("db.internal",5432,bTls,maxWaitMs,channel)
if (success == false)
    print socket.lastErrorText() + "\n";
    exit
end

#  Use the channel socket to send and receive with the destination through the tunnel.
print "Forwarded channel opened to the destination." + "\n";