(SQL Server) Transition from Http.PostUrlEncoded to Http.HttpReq

Provides instructions for replacing deprecated PostUrlEncoded method calls with HttpReq.

Sends the following raw HTTP request:

POST /echoPost.asp HTTP/1.1
Host: www.chilkatsoft.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 50

company=example&ip=111.111.111.111&url=example.com

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

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

    DECLARE @url nvarchar(4000)
    SELECT @url = 'https://www.chilkatsoft.com/echoPost.asp'

    DECLARE @req int
    EXEC @hr = sp_OACreate 'Chilkat.HttpRequest', @req OUT

    EXEC sp_OAMethod @req, 'AddParam', NULL, 'company', 'example'
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'ip', '111.111.111.111'
    EXEC sp_OAMethod @req, 'AddParam', NULL, 'url', 'example.com'

    -- ------------------------------------------------------------------------
    -- The PostUrlEncoded method is deprecated:

    DECLARE @responseObj int
    EXEC sp_OAMethod @http, 'PostUrlEncoded', @responseObj OUT, @url, @req
    EXEC sp_OAGetProperty @http, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @req
        RETURN
      END

    -- ...
    -- ...

    EXEC @hr = sp_OADestroy @responseObj

    -- ------------------------------------------------------------------------
    -- Do the equivalent using HttpReq.
    -- Your application creates a new, empty HttpResponse object which is passed 
    -- in the last argument and filled upon success.

    DECLARE @req2 int
    EXEC @hr = sp_OACreate 'Chilkat.HttpRequest', @req2 OUT

    EXEC sp_OAMethod @req2, 'AddParam', NULL, 'company', 'example'
    EXEC sp_OAMethod @req2, 'AddParam', NULL, 'ip', '111.111.111.111'
    EXEC sp_OAMethod @req2, 'AddParam', NULL, 'url', 'example.com'

    EXEC sp_OASetProperty @req2, 'HttpVerb', 'POST'
    EXEC sp_OASetProperty @req2, 'ContentType', 'application/x-www-form-urlencoded'

    DECLARE @resp int
    EXEC @hr = sp_OACreate 'Chilkat.HttpResponse', @resp OUT

    EXEC sp_OAMethod @http, 'HttpReq', @success OUT, @url, @req2, @resp
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @req
        EXEC @hr = sp_OADestroy @req2
        EXEC @hr = sp_OADestroy @resp
        RETURN
      END

    -- Results are contained in the HTTP response object...

    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @req
    EXEC @hr = sp_OADestroy @req2
    EXEC @hr = sp_OADestroy @resp


END
GO