(SQL Server) Example: Http.ResumeDownload method

Demonstrates the ResumeDownload method.

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

    EXEC sp_OASetProperty @http, 'KeepResponseBody', 1

    -- To demonstrate resuming a download, we've created a file on the chilkatsoft.com
    -- web server that contains the first 82,379 bytes of the full  279,658 bytes of the hamlet.xml file.

    -- We'll first download the partial file, and pretend it was a previous incomplete attempt to download the entire file.
    DECLARE @localFilePath nvarchar(4000)
    SELECT @localFilePath = 'c:/temp/qa_output/hamlet.xml'
    EXEC sp_OAMethod @http, 'Download', @success OUT, 'https://www.chilkatsoft.com/testData/hamlet_partial.xml', @localFilePath
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        RETURN
      END

    -- Download the remainder of hamlet.xml.
    EXEC sp_OAMethod @http, 'ResumeDownload', @success OUT, 'https://www.chilkatsoft.com/testData/hamlet.xml', @localFilePath
    DECLARE @statusCode int
    EXEC sp_OAGetProperty @http, 'LastStatus', @statusCode OUT
    IF @success = 0
      BEGIN
        IF @statusCode = 0
          BEGIN
            -- Unable to either send the request or get the response.
            EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
            PRINT @sTmp0
          END
        ELSE
          BEGIN
            -- We got a response, but the status code was not in the 200s

            PRINT 'Response status code: ' + @statusCode
            -- Examine the response body.

            PRINT 'Response body:'
            EXEC sp_OAGetProperty @http, 'LastResponseBody', @sTmp0 OUT
            PRINT @sTmp0
          END

        PRINT 'Download failed.'

      END
    ELSE
      BEGIN

        PRINT 'Download success, response status = ' + @statusCode
      END

    -- The hamlet.xml file should be 279,658 bytes
    DECLARE @fac int
    EXEC @hr = sp_OACreate 'Chilkat.FileAccess', @fac OUT


    EXEC sp_OAMethod @fac, 'FileSize', @iTmp0 OUT, @localFilePath
    PRINT 'size of hamlet.xml: ' + @iTmp0


    PRINT 'Success.'

    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @fac


END
GO