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	Simple Software Update Protocol (SSUP) Version 0.2
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	SSUP requires the SRX method of sending and receiving messages via HTTP 
	GET/POST and XML response. The following is the specification of messages 
	provided in SSUP. The SRX protocol specification is located here.
	
	An SSUP response must include <ssup> as the first element with a version attribute indicating the SSUP specification version used in the format #.#.

	1) Update Software
		Form elements: id (software package id), version (current running version), id, version, ...

		The server gets device ID from user agent string, then a set of id, 
		version paired values from the POST, then responds with an XML list of 
		software packages to download.

	Example XML Response:

	<ssup version=x.x>
	  <softwareList>
	    <size>1</size>
	    <package>
	      <id>app-win</id>
	      <version>1.1</version>
	      <url>/software_download/app/win/1.1</url>
	    </package>
	    …
	  </softwareList>
	</ssup>