Re: [ jEdit-users ] ssh keys/agents?

[Dimitri M. <dm...@bm...>]

On Monday 16 August 2004 03:50 pm, mike dillon wrote:
>
> Also, it isn't exactly clear what protocol SCP uses... I'm not actually
> sure that it does use the SFTP protocol. It may use a different
> (undocumented) protocol.

I suspect that (at least in OpenSSH) scp simply cat's file down one end of the 
connection and writes out to a file on the other end. Which is where the 
famouns hanging connections "feature" of OpenSSH comes from -- they're afraid 
to abort a connection because it may be an scp connection and aborting it 
will result in corrupt download. If they had used a different protocol this 
problem wouldn't exist (you send file size over first and then you know 
exactly when it's safe to close the connection).

SFTP is just a wrapper that lets you run "ls" (and a couple of other things) 
in addition to scp in a very limited shell.

Dima
-- 
...the mainstream products of major vendors largely ignore these demonstrated
technologies...  [Instead, their customers] are left with several ineffective
solutions collected under marketing titles like "defense in depth".
           -- Thirty Years Later: Lessons from the Multics Security Evalution