(SQL Server) Send XMLHttpRequest using PUT, GET, DELETE, or any HTTP Request Method

The PostXml method is the easiest way to send an XMLHttpRequest using the POST HTTP verb (which is by far the most common). To use a different HTTP request method (such as PUT, GET, DELETE, etc.), the SynchronousRequest method should be called. It provides more flexibility in constructing the exact HTTP request desired.

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
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    -- 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

    -- The XML sent in the body of the request is application
    -- specified -- it should contain whatever the server-side
    -- application is expecting..
    DECLARE @xmlStr nvarchar(4000)
    SELECT @xmlStr = '<?xml version="1.0" encoding="UTF-8"?><appXml><something>123</something></appXml>'

    -- If the service endpoint is  "http://www.chilkatsoft.com/xmlEcho.asp",
    -- then we have the following arguments to be passed to
    -- HttpSReq:
    DECLARE @endpointDomain nvarchar(4000)
    SELECT @endpointDomain = 'www.chilkatsoft.com'
    DECLARE @endpointPort int
    SELECT @endpointPort = 443
    DECLARE @endpointSsl int
    SELECT @endpointSsl = 1

    -- Prepare the HTTP request object:
    DECLARE @req int
    EXEC @hr = sp_OACreate 'Chilkat.HttpRequest', @req OUT

    EXEC sp_OASetProperty @req, 'Path', '/xmlEcho.asp'

    -- This example will use the "PUT" HTTP request method
    -- (also known as HTTP verb)
    EXEC sp_OASetProperty @req, 'HttpVerb', 'PUT'
    EXEC sp_OASetProperty @req, 'ContentType', 'text/xml'
    EXEC sp_OASetProperty @req, 'Charset', 'utf-8'
    EXEC sp_OAMethod @req, 'LoadBodyFromString', @success OUT, @xmlStr, 'utf-8'

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

    EXEC sp_OAMethod @http, 'HttpSReq', @success OUT, @endpointDomain, @endpointPort, @endpointSsl, @req, @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 @resp
        RETURN
      END

    -- The raw HTTP request sent by the above call is:

    -- PUT /xmlEcho.asp HTTP/1.1
    -- Content-Type: text/xml
    -- Host: www.chilkatsoft.com
    -- Content-Length: 81
    -- 
    -- <?xml version="1.0" encoding="UTF-8"?><appXml><something>123</something></appXml>

    -- Examine the Body of the HTTP response
    -- This would be the XML response sent by the server.
    EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
    PRINT @sTmp0

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


END
GO