(SQL Server) SOCKS4, SOCKS5 Proxy for POP3

Demonstrates how to communicate with a POP3 server through a SOCKS4 or SOCKS5 proxy.

Note: This example requires Chilkat v11.0.0 or greater.

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)
    DECLARE @success int
    SELECT @success = 0

    -- This example requires 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
    EXEC @hr = sp_OACreate 'Chilkat.MailMan', @mailman OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- To use a SOCKS4 or SOCKS5 proxy, simply set the following
    -- properties prior to making any calls that communicate with
    -- a POP3 server:
    -- The SOCKS hostname may be a domain name or 
    -- IP address:
    EXEC sp_OASetProperty @mailman, 'SocksHostname', 'www.mysocksproxyserver.com'
    EXEC sp_OASetProperty @mailman, 'SocksPort', 1080
    EXEC sp_OASetProperty @mailman, 'SocksUsername', 'myProxyLogin'
    EXEC sp_OASetProperty @mailman, 'SocksPassword', 'myProxyPassword'
    -- Set the SOCKS version to 4 or 5 based on the version
    -- of the SOCKS proxy server:
    EXEC sp_OASetProperty @mailman, 'SocksVersion', 5
    -- Note: SOCKS4 servers only support usernames without passwords.
    -- SOCKS5 servers support full login/password authentication.

    -- 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.
    DECLARE @bundle int
    EXEC @hr = sp_OACreate 'Chilkat.EmailBundle', @bundle OUT

    DECLARE @keepOnServer int
    SELECT @keepOnServer = 1
    DECLARE @headersOnly int
    SELECT @headersOnly = 0
    -- Irrelevent because we are NOT downloading headers-only
    DECLARE @numBodyLines int
    SELECT @numBodyLines = 0
    EXEC sp_OAMethod @mailman, 'FetchAll', @success OUT, @keepOnServer, @headersOnly, @numBodyLines, @bundle
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mailman
        EXEC @hr = sp_OADestroy @bundle
        RETURN
      END

    DECLARE @email int
    EXEC @hr = sp_OACreate 'Chilkat.Email', @email OUT

    DECLARE @i int
    SELECT @i = 0
    EXEC sp_OAGetProperty @bundle, 'MessageCount', @iTmp0 OUT
    WHILE @i < @iTmp0
      BEGIN
        EXEC sp_OAMethod @bundle, 'EmailAt', @success OUT, @i, @email


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

        EXEC sp_OAGetProperty @email, 'Subject', @sTmp0 OUT
        PRINT 'Subject: ' + @sTmp0
        SELECT @i = @i + 1
      END

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

    EXEC @hr = sp_OADestroy @mailman
    EXEC @hr = sp_OADestroy @bundle
    EXEC @hr = sp_OADestroy @email


END
GO