Swift

POP3 using HTTP Proxy

Demonstrates how to communicate with a POP3 server through an HTTP proxy. Swift

func chilkatTest() {
    var success: Bool = false

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

    // The mailman object is used for receiving (POP3) 
    // and sending (SMTP) email.
    let mailman = CkoMailMan()!

    // To connect through an HTTP proxy, set the HttpProxyHostname
    // and HttpProxyPort properties to the hostname (or IP address)
    // and port of the HTTP proxy.  Typical port numbers used by
    // HTTP proxy servers are 3128 and 8080.
    mailman.httpProxyHostname = "www.my-http-proxy.com"
    mailman.httpProxyPort = 3128

    // Important:  Your HTTP proxy server must allow non-HTTP
    // traffic to pass.  Otherwise this does not work.

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

    // Set the POP3 login/password.
    mailman.popUsername = "myLogin"
    mailman.popPassword = "myPassword"

    // Copy the all email from the user's POP3 mailbox 
    // into a bundle object.  The email remains on the server.
    // 
    // NOTE: All methods that communicate with a POP3 server
    // will automatically connect and authenticate (i.e. login)
    // if not already connected.  The connection will remain
    // open after the method call returns so that subsequent
    // calls do not need to re-establish the connection.
    // In this case, the connection is established via the HTTP
    // proxy.
    let bundle = CkoEmailBundle()!
    var keepOnServer: Bool = true
    var headersOnly: Bool = false
    // Irrelevent because we are not downloading headers-only
    var numBodyLines: Int = 0
    success = mailman.fetchAll(keepOnServer: keepOnServer, headersOnly: headersOnly, numBodyLines: numBodyLines, bundle: bundle)
    if success == false {
        print("\(mailman.lastErrorText!)")
        return
    }

    let email = CkoEmail()!
    var i: Int = 0
    while i < bundle.messageCount.intValue {
        bundle.email(at: i, email: email)

        print("From: \(email.from!)")
        print("Subject: \(email.subject!)")
        i = i + 1
    }

    success = mailman.pop3EndSession()

}