Frost uses DDA for all files, this saves some resources (transfer over
socket to Frost). Is DDA to expensive in the node, should clients not
use DDA for small files?

A TestDDA functionality in the node would be great.

Client to node:

TestDDA
FileToWrite=c:\dir\file-123.tmp
WriteContent =<unique token>
FileToRead=c:\dir\file.456.tmp
ReadContent=<unique token>
EndMessage

Node to client:

TestDDAResponse
FileWritten=true
FileRead=true
ReadContent=<same unique read token>
EndMessage

This way the client can check if the file was really written (check
unique token in file) and if the node was able to read the other
unique token from the specified file. If something fails the client
could still use DDA for PUTs (read allowed) or for GETs (write
allowed).

Just an idea....

On 1/30/07, Matthew Toseland <toad at amphibian.dyndns.org> wrote:
> On Wed, Jan 17, 2007 at 09:16:56AM +0100, bbackde at googlemail.com wrote:
> > I know there are many reasons why this could fail, but it would help
> > for the most users.
>
> Yeah, it's something the node should provide IMHO.
>
> How? The client feeds the node a filename, the node generates a short
> random hexadecimal string and writes it to the filename, then passes it
> back to the client?
>
> What about exploiting the "downloads" directory? This is something we
> know is accessible to the node, even if it isn't accessible to all
> clients? Maybe there should be an FCP command to return the location of
> the downloads directory, or even to create a subdirectory within it for
> a specific client?
> >
> > On 1/17/07, Florent Daigni?re (NextGen$) <nextgens at freenetproject.org> 
> > wrote:
> > > * bbackde at googlemail.com <bbackde at googlemail.com> [2007-01-17 
> > > 08:28:41]:
> > >
> > > > Could the node provide a functionality to check DDA access to a given
> > > > file? Currently Frost writes a file and tells the node to create the
> > > > URI of this file. If the node can access the file then DDA is
> > > > possible. But to check if the node can write to the file a GET would
> > > > be needed, and this could take some time.
> > > > I want a FCP2 command to let check the node read/write access to a
> > > > given file to check if DDA is really possible.
> > > >
> > > > Thanks!
> > >
> > > Well, beeing able to access the file doesn't mean you are on the same
> > > computer!
> > >
> > > It could be a mounted network filesystem or even worst ; a copy of the
> > > files you are testing located in the same path.
> > >
> > > NextGen$
> > >
> > >
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