Upload Files to Web Server

Demonstrates how to upload files from an application to a web server. Note: There must be something provided on the server-side to consume the upload. It could be an ASP or ASP.NET script, Perl, C++ CGI, PHP, Ruby, etc,. However, uploading via HTTP is not the same as uploading via FTP where the FTP server handles receiving the file and saving to disk.

The C# code behind http://www.chilkatsoft.com/receiveUpload.aspx may be found at this URL: C# to Receive Upload in ASP.NET.

Download Chilkat HTTP ActiveX

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int

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

    --  Any string unlocks the component for the 1st 30-days.
    EXEC sp_OAMethod @http, 'UnlockComponent', @success OUT, 'Anything for 30-day trial'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  Build a HTTP request with the files to be uploaded:
    DECLARE @req int
    EXEC @hr = sp_OACreate 'Chilkat.HttpRequest', @req OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OAMethod @req, 'UseUpload', NULL

    --  The URL we'll be posting to is:
    --  http://www.chilkatsoft.com/receiveUpload.aspx
    --  Therefore, the path part of the URL is:
    EXEC sp_OASetProperty @req, 'Path', '/receiveUpload.aspx'

    --  Note: You may test uploads to this URL, but anything over 80K will be aborted on the receiving side.

    --  Add some files to the request:
    --  The 1st argument is an arbitrary name.  It's the POST form field name.
    --  The 2nd argument is the filename currently existing on
    --  the local filesystem.  It may include an absolute or relative
    --  path, or no path at all if it's in the current working directory.
    EXEC sp_OAMethod @req, 'AddFileForUpload', @success OUT, 'file1', 'hamlet.xml'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @req, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END
    EXEC sp_OAMethod @req, 'AddFileForUpload', @success OUT, 'file2', 'dude.gif'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @req, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  Send the HTTP POST and get the response.  Note: This is a blocking call.
    --  The method does not return until the full HTTP response is received.
    DECLARE @domain nvarchar(4000)

    DECLARE @port int

    DECLARE @ssl int

    SELECT @domain = 'www.chilkatsoft.com'
    SELECT @port = 80
    SELECT @ssl = 0
    DECLARE @resp int

    EXEC sp_OAMethod @http, 'SynchronousRequest', @resp OUT, @domain, @port, @ssl, @req
    IF @resp Is NULL 
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT

        PRINT @sTmp0
      END
    ELSE
      BEGIN
        --  Display the HTML source of the page returned.
        EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT

        PRINT @sTmp0
      END
END
GO