Classic ASP

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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Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

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

set ssh1 = Server.CreateObject("Chilkat.Ssh")

' Connect directly to the 1st SSH server.
success = ssh1.Connect("serverssh1.com",22)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( ssh1.LastErrorText) & "</pre>"
    Response.End
End If

' Authenticate using login/password:
success = ssh1.AuthenticatePw("ssh1Login","ssh1Password")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( ssh1.LastErrorText) & "</pre>"
    Response.End
End If

' 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.
set ssh2 = Server.CreateObject("Chilkat.Ssh")
success = ssh2.ConnectThroughSsh(ssh1,"serverssh2.com",22)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( ssh2.LastErrorText) & "</pre>"
    Response.End
End If

' Authenticate with ssh2...
success = ssh2.AuthenticatePw("ssh2Login","ssh2Password")
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( ssh2.LastErrorText) & "</pre>"
    Response.End
End If

set mailman = Server.CreateObject("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
success = mailman.UseSsh(ssh2)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( mailman.LastErrorText) & "</pre>"
    Response.End
End If

' Set the POP3 server's hostname
mailman.MailHost = "pop.example.com"

' Set the POP3 login/password.
mailman.PopUsername = "myLogin"
mailman.PopPassword = "myPassword"

' Establish the POP3 connection through the ssh2 tunnel.
success = mailman.Pop3BeginSession()
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( mailman.LastErrorText) & "</pre>"
    Response.End
End If

' Get the number of messages in the mailbox.
numMessages = mailman.GetMailboxCount()

set email = Server.CreateObject("Chilkat.Email")
i = 1
Do While i <= numMessages
    ' Fetch by the message number (not by the UIDL)
    success = mailman.FetchOne(0,0,i,email)
    If (success = 0) Then
        Response.Write "<pre>" & Server.HTMLEncode( mailman.LastErrorText) & "</pre>"
        Response.End
    End If

    Response.Write "<pre>" & Server.HTMLEncode( email.From & ": " & email.Subject & vbLf) & "</pre>"

    i = i + 1
Loop

' 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.
success = mailman.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.

ssh2.Disconnect 

ssh1.Disconnect 

%>
</body>
</html>