Path: utzoo!mnetor!uunet!husc6!cmcl2!nrl-cmf!ames!pasteur!ucbvax!VENERA.ISI.EDU!braden
From: braden@VENERA.ISI.EDU
Newsgroups: comp.protocols.tcp-ip
Subject: Re:  refund mechanisms in charging
Message-ID: <8804272031.AA02655@braden.isi.edu>
Date: 27 Apr 88 20:31:40 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 19


	
	Craig, you are right about the certification of bad transfers.  Messages
	from some trusted network component might satisfy such a
	requirement.  I know this sounds messy, but even the telephone
	system sort of relys upon my work to say the a call was disconnected
	during use and I get a full refund, even if I only call back and say 
	goodbye and pay only the minimum charge.  Such are the issues
	of charging for useage.
	
	dennis
	
Dennis,

The solution is to implement the FTP protocol, including FTP Restart! The
user DID transfer most of the bytes... why should we return his money?
Why create a hard problem when there is a trivial solution?

Bob Braden