Re: Ftp freezes on w32

[Lennart Borgman]

Lennart Borgman wrote:
> Lennart Borgman wrote:
> > Lennart Borgman wrote:
> > > I have seen a problem with ftp on w32 which I have not had time to 
> > > report before. The problem is that if I make a small pause for some 
> > > minutes then ftp hangs. Looks like there perhaps is some problem 
> > > with the ftp process. Here is a more detailed description:
> > >
> > >
> > > I have downloaded the ftp program mentioned on 
> > > http://www.emacswiki.org/cgi-bin/wiki/AngeFtp and my 
> > > ange-ftp-ftp-program-name is c:/dl/ftp-for-win32/Release/ftp.exe. I 
> > > am using w2k on this pc. My CVS Emacs is from 2006-11-03.
> > >
> > > I open a remote file with the name 
> > > "/ftp:address@hidden:/htdocs/somepath/index.html". After 
> > > doing the first changes to the remote file point is on line 79 in 
> > > the buffer "*ftp address@hidden".
> > >
> > > Now I wait maybe 10 min. Then I try again to change the file. Now 
> > > Emacs freezes right after the first character, but C-g helps and the 
> > > screen gets updated again. Looking in the ftp buffer point is still 
> > > on line 79 right after the prompt. However now there is some text 
> > > after the prompt:
> > >
> > >  ftp> quote mdtm /htdocs/somepath/index.html
> > >
> > > If I in the window showing the ftp buffer now press up arrow I get 
> > > the error message:
> > >
> > >  Wrong type argument: processp, nil
> >
> > I have looked at this a bit more. The process get killed in 
> > `ange-ftp-wait-not-busy' so there is no strange with that the process 
> > is gone.
> >
> > However what is happening is that the `ange-ftp-wait-not-busy' never 
> > ends. The process filter in `ange-ftp-process-filter' recieves a 
> > string with only nulls (in the argument str).
> >
> > Since this is reproducible it seems possible to make a fix for it. A 
> > signal can be sent from the process filter and this can be caught in 
> > `ange-ftp-raw-send'. But it does not seem quite right to me.
> >
> > Is there not something suspicious about that the process filter 
> > receives just nulls? Is there something wrong with emacs_read?
>
> Some more information.
>
> Workaround: It is possible to workaround the problem by simply 
> deleting the inferior ftp process in `ange-ftp-process-filter' when a 
> string with just a lot of nulls is recieved.

I was wrong when I said I can work around the problem by deleting the 
inferior ftp process. I can't because I can not get rid of the ftp 
process. It seems impossible in Emacs on w32.

Does someone have any reciepe how to get ange-ftp to work on w32? I do 
not know of any way to get it working.