[APP][2.1+] FTP Server Ultimate - FTP, SFTP, FTPS server with multi-user, no-root

Nexus 4 / android 4.2

Hi I recently bought a nexus 4 running android 4.2. I really dislike the whole MTP thing so I decided to try out FTP server ultimate.

The app has an excellent interface and seems to be full of features. The problem is I can't seme to make use of it - I cannot connect to the SFTP server that I setup on my phone. I am attempting to connect to the phone over wifi from my desktop that is on the same subnet/local LAN. When I try to connect to the server from filezilla I get:

Status: Connection attempt failed with "EHOSTUNREACH - No route to host".
Error: Could not connect to server

From past experience, typically what this means is that the port (in this case 2222) is being blocked by the OS firewall. Usually, taking down the firewall would open the port and the connection could proceed. Because this is an android phone, I have no idea how to poke a hole in the firewall or even if this IS infact the problem...

Any comments would be great

Thank you Themuzz for this great app. I've tried another quite popular filesharing app but it's not as reliable as FTP Server Ultimate. But I also have a couple of problems with FTP Server and I don't know whether it's the app or my phone.

I usually use FTP Server to backup files from my phone or transfer a ROM to the SD card of my phone. Sometimes it works really well without a hiccup. And quite often it will break connection in the middle of a transfer. Checking the phone and the app I would normally see the following errors:

(DMWBFC) - MKD error
426 Data socket error
Listening stopped
Error accepting/binding socket java.net
SocketException: Socket closed

How do I prevent the above errors and achieve a stable FTP connection? Thank you.

PS I think this could be a kernel problem. Please consider this solved.

FTPS (SSL) connection problem

Hi was wondering how to get FTP Server Ultimate to work with SSL turned on.
I have a router and have no idea what the problem is but I can connect with SSL
turned off using regular FTP. Am going to guess I need passive port range to be opened in my router?
With various FTP servers on PC had to open passive ports.

Tried FileZilla, WinSCP, and Cute FTP. All good with no SSL but with SSL enabled they can't open a data connection.
Or an error similar to that like "server cant open data connection"

Just turned off passive ports in router for Cerberus FTP on PC. Tried to connect with AndFTP from phone. Could not
connect at all. No data connection error. Turned those ports back on in router and was in no problem.

Any help would be great on this matter

PS...am doing it all on home WiFi. Tried passive and active during SSL attempt...

I have been trying to use FTP Server Ultimate to time my WiFi network connection to an Android device. After starting the server and logging into it from a desktop computer within that LAN, I try sending a test file with a command such as this:


I have tried this test several ways. The best way for my test would be with a virtual file originated on a Linux client by using something like


to generate a large virtual file on the client side and send it. But I also have tried sending ordinary physical files from the client box. I also have tried running FTP on a Windows client box with a physical test file. I have tried two different Android devices running FTP Server Ultimate, and on both the permissions for /dev/null are appropriate and stock.

Using /dev/null as the target on an FTP server is a common method to use FTP for testing network throughput without writing the physical file to disk on the server. The FTP server should just send the incoming stream to the /dev/null bit bucket.

But using FTP to send a file to /dev/null always returns an error status from the FTP Server Ultimate server:


No error is logged on the FTP Server Ultimate side as far as I can tell.

So the server basically fails to recognize /dev/null as a special file in the Android's Linux engine that can be written to. I think the server just sees that the "file" called /dev/null exists and tries to delete it first as if it were a regular file.

By any chance, are you using the GNU swiftp library under the hood? I find this 451 error string in their source code, which does seem to behave that way.

boomerbubba said:

I have been trying to use FTP Server Ultimate to time my WiFi network connection to an Android device. After starting the server and logging into it from a desktop computer within that LAN, I try sending a test file with a command such as this:

Code:

ftp> put filename /dev/null

...
But using FTP to send a file to /dev/null always returns an error status from the FTP Server Ultimate server:

Click to expand...

Click to collapse

I got this functionality working by substituting the append command for put.


I still think put should work in general, since that is what is expected on other *nix-based FTP servers. (See, for example, this and this.)

But I can make do with append.

Themuzz said:

@boomerbubba So you tried it with FTP or SFTP (ftp over ssh)? Anyway, great to hear it's fixed by changing the command Would be greatly appreciated if you could also leave a review on Play

Click to expand...

Click to collapse

I tested with FTP command-line client programs -- one on a Linux distro and another on a Windows XP box. Also used the Busybox FTP client on the same localhost as the FTP Server Ultimate is installed on. Always got the same "451 Couldn't truncate file" error from the server.

I never tried SFTP, nor saw the need for it since I am doing this all within my own private LAN.

BTW, I did try to leave feedback on Play, but Google Nazis now make one join Google+ to do that, which I refuse to do.

If I had left a review, it would have said this is a great app, but it would be better if I could select an option to restrict it to my LAN or WiFi. I do not care to expose my Android device to Internet FTP access just because I have local stuff to do. If that functionality is not easy to add, the next best thing would be to enable restricting to a local subnet or IP range such as 192.168.1.*, instead of specifying each individual IP on a whitelist.

neo668 said:

Thank you Themuzz for this great app. I've tried another quite popular filesharing app but it's not as reliable as FTP Server Ultimate. But I also have a couple of problems with FTP Server and I don't know whether it's the app or my phone.

I usually use FTP Server to backup files from my phone or transfer a ROM to the SD card of my phone. Sometimes it works really well without a hiccup. And quite often it will break connection in the middle of a transfer. Checking the phone and the app I would normally see the following errors:

(DMWBFC) - MKD error
426 Data socket error
Listening stopped
Error accepting/binding socket java.net
SocketException: Socket closed

How do I prevent the above errors and achieve a stable FTP connection? Thank you.

PS I think this could be a kernel problem. Please consider this solved.

Click to expand...

Click to collapse

got the same problem, I use andftp client to transfer around 500 files to the ftp server. I re-enabled resume support on the andftp client and moved the devices away from eachother (they were very close). I use the tethering on my phone and use a Kindle CM10.2 Kindle Fire 7" with the server installed. I also created a new random port. Problem went away after. :good:

Can't access /mnt/shell folder with this ftp server app. On windows I get the error 550: The path is inaccessible

I have a rooted Galaxy Nexus.

easy feature request : upload / download ratio
(user A can download X amount of data only if he has already uploaded Y amount of data)

Hello People. Sorry for opening this thread again but this does'nt work on My Samsung Galaxy Note 2 GT N7100 running on android 4.4.2. I tried setting up FTP Server Ultimate as per the instructions provided, but everytime I try to connect to the server through softwares like FileZilla, ios FTP Clients or even through the web browser, I'm getting this message : "ECONNREFUSED - Connection refused by server". I tried using Servers Ultimate Pro, but the result is the same even when both the devices are on the same WiFi network. I am a noob as far as setting up such a server is concerned.

I can access SD card but I cannot delete pictures for example... keeps saying I dont have permission or something, but I have resd/write, user/pass, everything... :/

Any help will be appreciated

Observations made by a well wisher

hey, nice app you have made. Have experienced no problem except laggy launches after reboot sometimes..(my phone was angry)

anyways being a well wisher i have noticed that your paid app- port forwarder pro is being distributed(i think illegally)
on many sites . one is aptoide (sorry i cant post link, try to google port forwarder pro apk aptoide)


(sorry for spaces in between)

hope you can take action
(just asking, did you play war of nations? name seems to be familiar)

My Lenovo K3 Note, Android 6.0, non-root can't write access to external SDcard. Eventhough I set home to external SDcard. So saddddddd.

Hi, to the SDCARD problem, you can solve it connecting via adb or SSH (you can use a Ultimate Server SSH, then "su") and next commands

pm grant com.icecoldapps.serversultimatepro android.permission.WRITE_EXTERNAL_STORAGE
pm grant com.icecoldapps.serversultimatepro android.permission.READ_EXTERNAL_STORAGE

pm grant com.icecoldapps.serversultimate.packa android.permission.WRITE_EXTERNAL_STORAGE
pm grant com.icecoldapps.serversultimate.packa android.permission.READ_EXTERNAL_STORAGE

pm grant com.icecoldapps.serversultimate.packb android.permission.WRITE_EXTERNAL_STORAGE
pm grant com.icecoldapps.serversultimate.packb android.permission.READ_EXTERNAL_STORAGE


pm grant com.icecoldapps.serversultimate.packc android.permission.WRITE_EXTERNAL_STORAGE
pm grant com.icecoldapps.serversultimate.packc android.permission.READ_EXTERNAL_STORAGE


pm grant com.icecoldapps.serversultimate.packe android.permission.WRITE_EXTERNAL_STORAGE
pm grant com.icecoldapps.serversultimate.packe android.permission.READ_EXTERNAL_STORAGE

Right now I can write in the SMB External Storage perfectly and i think I could write on the rest of the servers too.