(SQL Server) POP3 using HTTP Proxy

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- 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.
    DECLARE @mailman int
    -- Use "Chilkat_9_5_0.MailMan" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.MailMan', @mailman OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    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.
    EXEC sp_OASetProperty @mailman, 'HttpProxyHostname', 'www.my-http-proxy.com'
    EXEC sp_OASetProperty @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
    EXEC sp_OASetProperty @mailman, 'MailHost', 'pop.someMailServer.com'

    -- Set the POP3 login/password.
    EXEC sp_OASetProperty @mailman, 'PopUsername', 'myLogin'
    EXEC sp_OASetProperty @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.
    DECLARE @bundle int
    EXEC sp_OAMethod @mailman, 'CopyMail', @bundle OUT
    EXEC sp_OAGetProperty @mailman, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mailman
        RETURN
      END

    DECLARE @i int
    SELECT @i = 0
    DECLARE @email int

    EXEC sp_OAGetProperty @bundle, 'MessageCount', @iTmp0 OUT
    WHILE @i < @iTmp0
      BEGIN
        EXEC sp_OAMethod @bundle, 'GetEmail', @email OUT, @i

        EXEC sp_OAGetProperty @email, 'From', @sTmp0 OUT
        PRINT 'From: ' + @sTmp0

        EXEC sp_OAGetProperty @email, 'Subject', @sTmp0 OUT
        PRINT 'Subject: ' + @sTmp0
        EXEC @hr = sp_OADestroy @email

        SELECT @i = @i + 1
      END

    EXEC @hr = sp_OADestroy @bundle

    DECLARE @success int
    EXEC sp_OAMethod @mailman, 'Pop3EndSession', @success OUT

    EXEC @hr = sp_OADestroy @mailman


END
GO