Basic VSP Programming tutorial
Header Parsing Functions Header Parsing Functions (Cookie Example)

## Preliminaries

- The HTTP request header contains lines of request information.
- Every user-agent (browser) sends at least one request line to the Web server.
- The "lines" argument in VSPs is an array of the user-agent request lines.

## Methods for accessing the request parameters

- A specific attribute can be accessed with the http_request_header() function.
- The header lines can be accessed with aref() function.
- Parsing the header line can be done with the split_and_decode() function.

## Cookie Demo

This example shows how to set a cookie in the user-agent, and displaying a cookie string when retrieved.

- Setting the cookie is done with the http_header() function. (see also:VS-B-5)
- Retrieving the cookie string is done with http_request_header() function.