SQL Server

Persist Cookies to XML Files and Auto Re-Send

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Demonstrates how to persist incoming cookies to XML files and automatically re-send in subsesquent HTTP requests. SQL Server

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr 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.

    DECLARE @http int
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- To save cookies to XML files (per domain) in a specific
    -- directory, set the CookieDir property (the directory must
    -- already exist and be writeable by the caller).  Also,
    -- set the SaveCookies property:
    EXEC sp_OASetProperty @http, 'CookieDir', '/cookieDir'
    EXEC sp_OASetProperty @http, 'SaveCookies', 1

    -- Any methods that do a GET, POST, etc. will save cookies
    -- to the CookieDir:
    DECLARE @html nvarchar(4000)

    EXEC sp_OAMethod @http, 'QuickGetStr', @html OUT, 'https://www.paypal.com/'

    -- After running this code, a "paypal_com.xml" file should appear
    -- in /cookieDir.

    -- It's content will look something like this:

    -- <cookies>
    --     <cookie key=".paypal.com,/" v="0" secure="yes">
    --         <navcmd>_home-general</navcmd>
    --         <HttpOnly />
    --         <cwrClyrK4LoCV1fydGbAxiNL6iG>9cz...</cwrClyrK4LoCV1fydGbAxiNL6iG>
    --     </cookie>
    -- </cookies>

    -- To cause cached cookies to be sent with 
    -- subsequent HTTP requests, set the SendCookies
    -- property = 1.
    EXEC sp_OASetProperty @http, 'SendCookies', 1

    -- If another HTTP request is sent, the cookies should
    -- be added:
    EXEC sp_OAMethod @http, 'QuickGetStr', @html OUT, 'https://www.paypal.com/'

    -- Check the LastHeader property to see the MIME header
    -- of the last HTTP request sent.
    -- The "Cookie" header field should be present.

    PRINT '--- LastHeader ---'
    EXEC sp_OAGetProperty @http, 'LastHeader', @sTmp0 OUT
    PRINT @sTmp0

    EXEC @hr = sp_OADestroy @http


END
GO