id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
596	storage servers should announce that they support over-read	zooko	zooko	Since [changeset:6c4019ec33e7a253], storage servers have responded to an over-read (a read past the end of the data) by returning the valid span (up to the end of the data).  Before that they raised an exception on over-read.  Clients could use over-read for faster and nicer immutable file download, and the code to do so is in place in download.py and was tested, but is currently disabled.  This ticket is to make storage servers announce that they support over-read by adding a field to their version structure -- [source:src/allmydata/storage.py@20090110015222-e01fd-2a38c9d081c07fc2a33f95101e07ec8fb69d5c46#L957 src/allmydata/storage.py@3405#L957].  This would enable clients to use over-reads on servers that had declared themselves as supporting it.	enhancement	closed	major	1.3.0	code-storage	1.2.0	fixed