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# CORS demo with jQuery and netcat
=====================================
cross domain requests from localhost => hlkali

0) Setup apache

1) Create web site and load jQuery
=> /var/www/html

2) start netcat on port 9999

3) Simple request example
- Simple GET request
- Simple POST request

4) Preflight request example
(request does not pass criteria for a simple request)
- Use PATCH HTTP method
- Add a custom request header

5) Answer a preflight request
- paste the answer to netcat
- if the server accepts the preflight request
with a correct CORS response, the browser
sends the cross-domain request

- Whitelist the custom header
===
HTTP/1.1 200 OK
Access-Control-Allow-Origin: http://localhost
Access-Control-Allow-Headers: test
Content-Length: 0
==

- Whitelist the PATCH method
===
HTTP/1.1 200 OK
Access-Control-Allow-Origin: http://localhost
Access-Control-Allow-Methods: PATCH
Access-Control-Allow-Headers: test
Content-Length: 0
==

- Bad Allow-Origin value
===
HTTP/1.1 200 OK
Access-Control-Allow-Origin: http://foo
Access-Control-Allow-Methods: PATCH
Content-Length: 0
===
     
 
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