(SQL Server) Transition from Http.GetHead to Http.HttpNoBody

Provides instructions for replacing deprecated GetHead method calls with HttpNoBody.

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 @http int
    -- Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
    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.example.com/'

    -- ------------------------------------------------------------------------
    -- The GetHead method is deprecated:

    DECLARE @resp1 int
    EXEC sp_OAMethod @http, 'GetHead', @resp1 OUT, @url
    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
        RETURN
      END
    EXEC sp_OAGetProperty @resp1, 'StatusCode', @iTmp0 OUT
    PRINT @iTmp0
    EXEC @hr = sp_OADestroy @resp1

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

    DECLARE @resp2 int
    -- Use "Chilkat_9_5_0.HttpResponse" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.HttpResponse', @resp2 OUT

    DECLARE @success int
    EXEC sp_OAMethod @http, 'HttpNoBody', @success OUT, 'HEAD', @url, @resp2
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @resp2
        RETURN
      END
    EXEC sp_OAGetProperty @resp2, 'StatusCode', @iTmp0 OUT
    PRINT @iTmp0

    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @resp2


END
GO