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Check FTP Connection and Login Status

Demonstrates the connection-status properties ConnectVerified, LoginVerified, ConnectFailReason, and Greeting.

Background: When Connect fails, these properties separate the possible causes: ConnectVerified shows whether the TCP connection was established at all, LoginVerified whether authentication then succeeded, and ConnectFailReason gives a numeric code pinpointing the failure — far more actionable than a generic error for distinguishing, say, an unreachable host from a bad password. The Greeting captures the server's opening banner, sometimes useful for identifying the server or its policies.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

$ftp = New-Object Chilkat.Ftp2

$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"

$success = $ftp.Connect()
if ($success -ne $true) {
    #  ConnectFailReason gives a numeric code describing why Connect failed.
    $("Connect failed, reason code: " + $ftp.ConnectFailReason)
    $($ftp.LastErrorText)
    exit
}

#  After a successful connect, these flags report what succeeded.
$("TCP connection verified: " + $ftp.ConnectVerified)
$("Login verified: " + $ftp.LoginVerified)

#  The Greeting property holds the server's initial greeting banner.
$("Server greeting: " + $ftp.Greeting)

$success = $ftp.Disconnect()
if ($success -eq $false) {
    $($ftp.LastErrorText)
    exit
}