Lua

Set an FTP Compatibility Option

Demonstrates the Chilkat Ftp2.SetOption method, which enables or disables a named compatibility option. The only argument is the option name; matching is case-insensitive, and prefixing a recognized name with No- disables it.

Background: Real-world FTP servers have quirks, and these named options are targeted workarounds for specific ones — for example Microsoft-TLS-1.2-Workaround addresses a known interoperability issue. Most applications never need any of them; reach for SetOption only when a documented server problem calls for a specific fix, and use the exact recognized name.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the Ftp2.SetOption method, which enables or disables a named compatibility option.
-- The only argument is the option name.  Prefix a name with "No-" to disable it.

local ftp = chilkat.Ftp2.new()

ftp.hostname = "ftp.example.com"
ftp.username = "myFtpLogin"

-- Normally you would not hard-code the password in source.  You should instead obtain it
-- from an interactive prompt, environment variable, or a secrets vault.
ftp.password = "myPassword"

local success = ftp:connect()
if not success then
    print(ftp.last_error_text)
    return
end

-- Enable a recognized compatibility workaround.  Option-name matching is case-insensitive.
success = ftp:set_option("Microsoft-TLS-1.2-Workaround")
if not success then
    print(ftp.last_error_text)
    return
end

-- To disable it, prefix the name with "No-":
success = ftp:set_option("No-Microsoft-TLS-1.2-Workaround")
if not success then
    print(ftp.last_error_text)
    return
end

print("Compatibility option toggled.")

success = ftp:disconnect()
if not success then
    print(ftp.last_error_text)
    return
end