(SQL Server) Example: Http.HttpStr method

Shows how to use the HttpStr method to send an HTTP POST request with the text of a string as the request body. The example sends the following request:

POST /echo_request_body.asp HTTP/1.1
Host: chilkatsoft.com
Accept: */*
Accept-Encoding: gzip
Content-Type: application/json
Content-Length: 26

{"greeting":"Hello World"}

Also see: Chilkat Http Default and Auto-Filled Headers

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

    SELECT @success = 0

    DECLARE @requestBody nvarchar(4000)
    SELECT @requestBody = '{"greeting":"Hello World"}'

    -- This URL echoes the contents of the request body, letting us view it.
    DECLARE @url nvarchar(4000)
    SELECT @url = 'https://chilkatsoft.com/echo_request_body.asp'

    -- Send a POST with the contents of the string in the HTTP request body.
    DECLARE @resp int
    EXEC @hr = sp_OACreate 'Chilkat.HttpResponse', @resp OUT

    EXEC sp_OAMethod @http, 'HttpStr', @success OUT, 'POST', @url, @requestBody, 'utf-8', 'application/json', @resp
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @resp
        RETURN
      END


    EXEC sp_OAGetProperty @resp, 'StatusCode', @iTmp0 OUT
    PRINT 'Response Status Code: ' + @iTmp0

    -- Examine the request we sent.
    -- The LastHeader property stores the HTTP request header of the most recent request sent,
    -- and in this instance, the response body mirrors the request body.
    EXEC sp_OAGetProperty @http, 'LastHeader', @sTmp0 OUT
    PRINT @sTmp0
    EXEC sp_OAGetProperty @resp, 'BodyStr', @sTmp0 OUT
    PRINT @sTmp0

    -- Output:

    -- POST /echo_request_body.asp HTTP/1.1
    -- Host: chilkatsoft.com
    -- Accept: */*
    -- Accept-Encoding: gzip
    -- Content-Type: application/json
    -- Content-Length: 26
    -- 
    -- {"greeting":"Hello World"}

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


END
GO