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POP3 over Multiple Hop SSH

Demonstrates how to read POP3 email (using TCP or TLS) tunneled through mulitple-hop SSH. The scheme looks like this:

Application => ServerSSH1 => ServerSSH2 => POP3Server

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Local $bSuccess = False

; This example requires the Chilkat API to have been previously unlocked.
; See Global Unlock Sample for sample code.

$oSsh1 = ObjCreate("Chilkat.Ssh")

; Connect directly to the 1st SSH server.
$bSuccess = $oSsh1.Connect("serverssh1.com",22)
If ($bSuccess = False) Then
    ConsoleWrite($oSsh1.LastErrorText & @CRLF)
    Exit
EndIf

; Authenticate using login/password:
$bSuccess = $oSsh1.AuthenticatePw("ssh1Login","ssh1Password")
If ($bSuccess = False) Then
    ConsoleWrite($oSsh1.LastErrorText & @CRLF)
    Exit
EndIf

; Connect through the 1st SSH connection to reach a 2nd SSH server.
; Note: Any number of SSH connections may be simultaneously tunneled through a single
; existing SSH connection.
$oSsh2 = ObjCreate("Chilkat.Ssh")
$bSuccess = $oSsh2.ConnectThroughSsh($oSsh1,"serverssh2.com",22)
If ($bSuccess = False) Then
    ConsoleWrite($oSsh2.LastErrorText & @CRLF)
    Exit
EndIf

; Authenticate with ssh2...
$bSuccess = $oSsh2.AuthenticatePw("ssh2Login","ssh2Password")
If ($bSuccess = False) Then
    ConsoleWrite($oSsh2.LastErrorText & @CRLF)
    Exit
EndIf

$oMailman = ObjCreate("Chilkat.MailMan")

; Tell the mailman object to connect to the POP3 server though the ssh2 tunnel (which itself is routed through ssh1).
; The connection looks like this:  Application => ServerSSH1 => ServerSSH2 => POP3Server
$bSuccess = $oMailman.UseSsh($oSsh2)
If ($bSuccess = False) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

; Set the POP3 server's hostname
$oMailman.MailHost = "pop.example.com"

; Set the POP3 login/password.
$oMailman.PopUsername = "myLogin"
$oMailman.PopPassword = "myPassword"

; Establish the POP3 connection through the ssh2 tunnel.
$bSuccess = $oMailman.Pop3BeginSession()
If ($bSuccess = False) Then
    ConsoleWrite($oMailman.LastErrorText & @CRLF)
    Exit
EndIf

; Get the number of messages in the mailbox.
Local $iNumMessages = $oMailman.GetMailboxCount()

$oEmail = ObjCreate("Chilkat.Email")
Local $i = 1
While $i <= $iNumMessages
    ; Fetch by the message number (not by the UIDL)
    $bSuccess = $oMailman.FetchOne(False,0,$i,$oEmail)
    If ($bSuccess = False) Then
        ConsoleWrite($oMailman.LastErrorText & @CRLF)
        Exit
    EndIf

    ConsoleWrite($oEmail.From & ": " & $oEmail.Subject & @LF & @CRLF)

    $i = $i + 1
Wend

; Close the connection with the POP3 server.  (This closes the tunnel through ssh2)
; The connection with ssh2 is still alive, and may be used for more connections.
$bSuccess = $oMailman.Pop3EndSession()

; Close the connection with ssh2.  (This closes the the tunnel through ssh1.)
; The connection with ssh1 is still alive, and may be used for more connections.

$oSsh2.Disconnect 

$oSsh1.Disconnect