FileZilla Forums

Hi

Can we please have PRET included in the next version of filezilla or even included in the current version. I have been using Filezilla for a long time and unfortunately I was forced to use another product because there is no PRET support. More and more servers are using PRET .. just a major inconvienince.

The PRET (Pre Transfer) command is not currently a standard FTP command (eg. there's no RFC for it). In fact, it seems that it's something exclusive to DrFTP. What exactly do you need this "feature" for?

I will try to explain, the best as i can why we do very badly need PRET support on FileZilla FTP CLient.


I have a Master FTP: 10.0.0.1:21
I have 20 Slave: 10.0.0.2-22:1099

When i connect to the master, he send me the PASV SOCKET i need to LIST, so it send me 10,0,0,1,104,123

So my client know the list can be Found on this Socket.

If i wan to download a File and i Do GET Command:

No PASV SOCKET will be sended because it allready be done so my Client will try get the File on 10,0,0,1,104,123, but in fact the file is not there.

So we use PRE Command to tell the Server what im going to do into my next command.

So my client send This: PRE GET file.zip, so now the master is aware you wan this file, so is taking a look into his DB to find this file Socket, and it Send me a new PASV socket that point to the slave where is my File.

So after the PRE the FTPserver will send the normal command to the new PASV socket that point to the Slave who got my file.

So my client will simply do GET on this file after: Send PRE, Receive PASV.


Why we use that kind of FTP Server, because we can STRIPE: FTP, HDD and Bandwith Together if configured correctely.

So it very easy to get 16Terabytes and 1GB of bandwith with thoses FTP Distributed PASV server.


I know it not a Standart of RFC, but i think like many other ppl to have that feature into Filezilla Client will be totaly Amazing....

Because from my point of view i have no Choices to use another FTP Client, im stuck for Life with Filezilla and pretty happy


If you need a FTP for your TEST, im ready to offer You Admin AXX on a FTP Test I Build with drFTPD.

There is drftpd showing me his current Slaves Status and FreeSpace.

<drftpd> Greenseed: ( UP: 0 @ 0B/s )-( DN: 0 @ 0B/s )-( DF: 62.7GB/323.9GB )  ·
<drftpd> Melisa: ( UP: 0 @ 0B/s )-( DN: 0 @ 0B/s )-( DF: 986.6MB/320.1GB )  ·
<drftpd> Mylene: ( UP: 0 @ 0B/s )-( DN: 0 @ 0B/s )-( DF: 856.0GB/982.8GB )  ·
<drftpd> Shimoda: ( UP: 0 @ 0B/s )-( DN: 0 @ 0B/s )-( DF: 47.7GB/250.1GB )  ·
<drftpd> Walasse: ( UP: 0 @ 0B/s )-( DN: 0 @ 0B/s )-( DF: 257.5GB/500.1GB )  ·

<drftpd> DISKFREE: We have 1.2TB free, with a total disk space of 2.4TB. ·

The authors of DrFTPD refuse to create formal consistent specs for the PRET command so I refuse to implement RPET, simple as that.

ok i understand your choices. thx for the answer.

Also see this thread: http://filezilla.sourceforge.net/forum/ ... php?t=3288

i have read this post too, before posting answer to this one.

i will pay about 400$ for a custom version with that PRET Support for drftpd.

and i promess to not spread this version. will keep it only for me my self and I. haha!


hope to not disrespect anyone with that offer.

You could save some money by using a commercial FTP client that already supports PRET, e.g. SmartFTP). However, FileZilla certainly deserves donations, so you could donate the $400 minus the money for a SmartFTP license to the FileZilla project and I'm pretty sure Tim will consider again implementing PRET (as it really is not much work). This would give you two instead of one clients with PRET support and the good feeling to have supported the OSS community

*sigh*

Guess I'll have to write the specifications myself if the original developers are too lazy.

eyebex there is something very specific to filezilla that make him completely UNreplacebable, i have to use this version so where come that probleme.

On my computer i can use like you say many other software.

so for the donation im 100% with you... what ever will happen surely i will do one.



botg, if you tell me you will do i will comply imediately to what i have say. i think there is no need here to proof you are honorable guys

so i hope will help many ppl like me to start loving more filezilla and OPEN Source Project

Thx you all very much

Any progress ?

I'm also looking for this feature and am just curious, so i know if i can stop my quest for this feature

Give me formal specifications and I can have a version that supports PRET within the hour.

As i see it now only DrFTP seems to be needing this (as only do filezilla users connecting to drftp...)

maybe you can work it out to work on DrFTP and if someone complains about incompatibility you can fix it ?


I was thinking about changing some source code of an ftp proxy for a temp sollution, cause all it has to do is once send PRET and then PASV

this is how FlashFXP does it for me :

[R] PRET LIST
[R] 200 OK, will use master for upcoming transfer
[R] PASV
[R] 227 Entering Passive Mode (xx,xxx,xxx,xxx,xxx,xxx).
[R] Opening data connection IP: xx.xxx.xxx.xxx PORT: xxxx
[R] LIST -al

And i know the server sends this after FEAT so the client program knows to use PRET

[R] FEAT
[R] 211-Extensions supported:
[R]  CLNT
[R]  NOOP
[R]  PRET
[R]  AUTH SSL
....
....
[R] 211 End

Maybe you could've found this by yourselve but i'm just trying to help

Greets and btw thnx for a lovely program
(althoug i stay with 2.x)

Oh I know perfectly well how to use PRET, but unless there are some formal specifications for the PRET command I won't implement it. This is not internet explorer with tons of badly documented, nonstandard extensions!

i see your point,
after all the effort you put into it you'd like to keep everything clean and tight,
well i guess i have to wait dissapointedly untill PRET gets documented