IMAP SSH Tunneling (Port Forwarding)

Demonstrates how to setup an SSH tunnel for IMAP.

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Dim imap As New Chilkat.Imap()

Dim success As Boolean

'  Anything unlocks the component and begins a fully-functional 30-day trial.
success = imap.UnlockComponent("Anything for 30-day trial")
If (success <> true) Then
    MsgBox(imap.LastErrorText)
    Exit Sub
End If


'  Connect to an SSH server and establish the SSH tunnel:
Dim sshHostname As String
Dim sshPort As Long
'  The SSH hostname may be a hostname or an
'  IP address, such as "192.168.1.108".
'  The port is typically 22 (the standard port for SSH).
sshHostname = "www.mysshserver.com"
sshPort = 22
success = imap.SshTunnel(sshHostname,sshPort)
If (success <> true) Then
    MsgBox(imap.LastErrorText)
    Exit Sub
End If


'  Authenticate with the SSH server via a login/password
'  or with a public key.
'  This example demonstrates SSH password authentication.
'  Note: This is not authenticating with the IMAP server, it is
'  for authenticating with the SSH server, which is separate.
success = imap.SshAuthenticatePw("mySshLogin","mySshPassword")
If (success <> true) Then
    MsgBox(imap.LastErrorText)
    Exit Sub
End If


'  OK, the SSH tunnel is setup.  The IMAP component may
'  be used exactly the same as usual, except all communications
'  are sent through the SSH tunnel.

'  Connect to an IMAP server via the SSH tunnel.
'  Because the SSH tunnel has been previously setup,
'  this does not establish a direct connection with the IMAP
'  server.  It directs the SSH server to establish the connection.
success = imap.Connect("mail.chilkatsoft.com")
If (success <> true) Then
    MsgBox(imap.LastErrorText)
    Exit Sub
End If


'  Authenticate with the IMAP server via the SSH tunnel.
success = imap.Login("myLogin","myPassword")
If (success <> true) Then
    MsgBox(imap.LastErrorText)
    Exit Sub
End If



'  Select an IMAP mailbox
success = imap.SelectMailbox("Inbox")
If (success <> true) Then
    MsgBox(imap.LastErrorText)
    Exit Sub
End If



Dim messageSet As Chilkat.MessageSet
'  We can choose to fetch UIDs or sequence numbers.
Dim fetchUids As Boolean
fetchUids = true
'  Get the message IDs of all the emails in the mailbox
messageSet = imap.Search("ALL",fetchUids)
If (messageSet Is Nothing ) Then
    MsgBox(imap.LastErrorText)
    Exit Sub
End If


'  Fetch the emails into a bundle object:
Dim bundle As Chilkat.EmailBundle
bundle = imap.FetchBundle(messageSet)
If (bundle Is Nothing ) Then

    MsgBox(imap.LastErrorText)
    Exit Sub
End If


'  Loop over the bundle and display the FROM and SUBJECT of each.
Dim i As Long
For i = 0 To bundle.MessageCount - 1
    Dim email As Chilkat.Email
    email = bundle.GetEmail(i)
    TextBox1.Text = TextBox1.Text & email.From & vbCrLf
    TextBox1.Text = TextBox1.Text & email.Subject & vbCrLf
    TextBox1.Text = TextBox1.Text & "--" & vbCrLf

Next

'  Disconnect from the IMAP server.
imap.Disconnect()