Re: FTPAPI question

[Thomas Raddatz <thomas.raddatz@xxxxxxxxxxx>]

Sender: Thomas Raddatz <thomas.raddatz@xxxxxxxxxxx>

Christian,

I am not sure whether I correctly understand your question. On my opinion "multiple sessions" does not 
necessarily mean that these session are managed multi-threaded. But it can mean that you can open 
multiple sessions at the same time and then "put" and "get" files from here to there. E.g. having 
multiple session open you can read a directory on one box and then transfer all the files to another 
box without having to open and close the two sessions again and again.

I think that it is not a good idea to use RPG in a multi-threaded environment. I can not argue for 
that opinion in details. It is just a feeling from inside myself.

Thomas Raddatz.



Christian schrieb:
> Sender: Christian <chrisv5@xxxxxx>
>
> I have a couple of questions on my mind, but cannot really focus on them 
> right now. Thus I hope that i am forgiven if I keep asking them one be 
> one. Right now I'd like to know this:
>
> Why is there support for multiple sessions in FTPAPI? It uses 
> non-blocking sockets and it is not threaded, thus everything is 
> sequential anyway. This is actually a problem cause most FTP servers I 
> am aware of have the habit of timing out a connection rather quickly. 
> Hence the "keep alive" stuff in many generic FTP clients (which is not 
> handled by FTPAPI in any way).
>
> I'd like to hear rationales and use cases for multiple sessions (so far, 
>  I have only heard about people having too few sessions; the very same 
> who never close a session). I do not want to hear any evangelism. Fear 
> not, I do not plan to remove support for multiple sessions (actually, I 
> am more concerned about making them thread safe, if they aren't 
> already), unless there is an unanimous vote for that. Just want to 
> understand the need better.
>
>
> Regards,
> Christian
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