Lua

Connect to an SSH Server

Demonstrates the Chilkat Ssh.Connect method, which establishes a connection to an SSH server. The first argument is the hostname (a DNS name or a numeric IPv4/IPv6 address) and the second is the TCP port, usually 22. Connecting is the first step; authentication follows before any channels can be opened.

Background: Connect establishes only the SSH transport — the encrypted channel and host-key exchange — but does not log in. An SSH session is always used in stages: connect, authenticate, then open one or more channels for shell, exec, or port-forwarding work. Timeouts and optional SOCKS/HTTP proxying are controlled by the object's properties before this call.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the Ssh.Connect method, which establishes a connection to an SSH server.  The
-- 1st argument is the hostname (a DNS name or numeric IP) and the 2nd is the TCP port.

local ssh = chilkat.Ssh.new()

-- Port 22 is the usual SSH port.
local sshPort = 22
local success = ssh:connect("ssh.example.com", sshPort)
if not success then
    print(ssh.last_error_text)
    return
end

print("Connected to the SSH server.")

-- (Authentication would follow here before opening channels.)

ssh:disconnect()