DataFlex

POP3 using HTTP Proxy

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

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoMailman
    Variant vBundle
    Handle hoBundle
    Boolean iKeepOnServer
    Boolean iHeadersOnly
    Integer iNumBodyLines
    Variant vEmail
    Handle hoEmail
    Integer i
    String sTemp1

    Move False To iSuccess

    // 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.
    Get Create (RefClass(cComChilkatMailMan)) To hoMailman
    If (Not(IsComObjectCreated(hoMailman))) Begin
        Send CreateComObject of hoMailman
    End

    // 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.
    Set ComHttpProxyHostname Of hoMailman To "www.my-http-proxy.com"
    Set ComHttpProxyPort Of hoMailman To 3128

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

    // Set the POP3 server's hostname
    Set ComMailHost Of hoMailman To "pop.example.com"

    // Set the POP3 login/password.
    Set ComPopUsername Of hoMailman To "myLogin"
    Set ComPopPassword Of hoMailman To "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.
    Get Create (RefClass(cComChilkatEmailBundle)) To hoBundle
    If (Not(IsComObjectCreated(hoBundle))) Begin
        Send CreateComObject of hoBundle
    End
    Move True To iKeepOnServer
    Move False To iHeadersOnly
    // Irrelevent because we are not downloading headers-only
    Move 0 To iNumBodyLines
    Get pvComObject of hoBundle to vBundle
    Get ComFetchAll Of hoMailman iKeepOnServer iHeadersOnly iNumBodyLines vBundle To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoMailman To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatEmail)) To hoEmail
    If (Not(IsComObjectCreated(hoEmail))) Begin
        Send CreateComObject of hoEmail
    End
    Move 0 To i
    While (i < (ComMessageCount(hoBundle)))
        Get pvComObject of hoEmail to vEmail
        Get ComEmailAt Of hoBundle i vEmail To iSuccess

        Get ComFrom Of hoEmail To sTemp1
        Showln "From: " sTemp1
        Get ComSubject Of hoEmail To sTemp1
        Showln "Subject: " sTemp1
        Move (i + 1) To i
    Loop

    Get ComPop3EndSession Of hoMailman To iSuccess


End_Procedure