Re: lftp, gatling and sync-mode

[Alexander V. Lukyanov]

On Sat, Nov 29, 2008 at 02:57:12PM +0100, Maik Zumstrull wrote:
> lftp and the gatling file server don't understand each other with
> ftp:sync-mode on. I reported this on the gatling ML first; the author
> thinks the problem is likely on lftp's side.

No, it's on the server's side. Correctly implemented ftp servers should
work with sync-mode off, as stated by RFC959: "server-FTP processes should
queue any commands that arrive while a preceding command is in progress"
and RFC1123: "a single READ from the control connection may include more
than one FTP command".

> lftp :~> debug 5
> lftp :~> open ftp://localhost:2121/
> ---- Resolving host address...
> ---- 1 address found: 127.0.0.1
> ---- Connecting to localhost (127.0.0.1) port 2121
> ---> FEAT
> <--- 220 Hi there!
> <--- 211-Features:
> <---  MDTM
> <---  REST STREAM
> <---  SIZE
> <--- 211 End
> ---> USER anonymous
> ---> PASS lftp@
> ---> PWD
> <--- 230 No need for passwords, you're logged in now.         * This is the 
> reply for USER
> <--- 230 If you insist...                                     * This is the 
> reply for PASS
> cd `ftp://localhost:2121/' [Waiting for response...]

Now lftp waits for reply for PWD command and the server does not send it.
So the problem is with the server not sending reply for PWD command.

> ---> PWD
> <--- 257 "/" 

In sync mode it does.

-- 
   Alexander.