(Swift 2) IMAP STARTTLS (Explicit TLS/SSL)

The StartTls property is set to force the Connect method to automatically convert an connection to TLS/SSL via the STARTTLS IMAP command.

This is also known as "explicit TLS/SSL" as opposed to "implicit TLS/SSL". With implicit TLS/SSL, the IMAP client connects on the well-known IMAP TLS/SSL port 993 and the secure channel is immediately established. With explicit TLS/SSL, the IMAP client connects on the typical non-secure port (143 usually) and the converts the connection via the STARTTLS command.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let imap = CkoImap()

    // Indicate that STARTTLS should be used to convert
    // to a secure TLS/SSL connection:
    imap.StartTls = true
    imap.Port = 143

    // Connect to an IMAP server and convert the connection
    // to TLS/SSL via STARTTLS.
    var success: Bool = imap.Connect("imap.someMailServer.com")
    if success != true {
        print("\(imap.LastErrorText)")
        return
    }

    // The remainder of this example is the same as for 
    // non-TLS/SSL...

    // Login
    success = imap.Login("myLogin", password: "myPassword")
    if success != true {
        print("\(imap.LastErrorText)")
        return
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox")
    if success != true {
        print("\(imap.LastErrorText)")
        return
    }

    var messageSet: CkoMessageSet?
    // We can choose to fetch UIDs or sequence numbers.
    var fetchUids: Bool = true
    // Get the message IDs of all the emails in the mailbox
    messageSet = imap.Search("ALL", bUid: fetchUids)
    if imap.LastMethodSuccess == false {
        print("\(imap.LastErrorText)")
        return
    }

    // Fetch the emails into a bundle object:
    var bundle: CkoEmailBundle?
    bundle = imap.FetchBundle(messageSet)
    if imap.LastMethodSuccess == false {
        messageSet = nil
        print("\(imap.LastErrorText)")
        return
    }

    // Loop over the bundle and display the FROM and SUBJECT of each.
    var i: Int = 0
    var numEmails: Int = bundle!.MessageCount.intValue
    while i < numEmails {
        var email: CkoEmail? = bundle!.GetEmail(i)
        print("\(email!.From)")
        print("\(email!.Subject)")
        print("--")
        email = nil
        i = i + 1
    }

    // Disconnect from the IMAP server.
    success = imap.Disconnect()

    messageSet = nil
    bundle = nil

}