Hello,

first of all, fantastic work! In my opinion the best option for bloat-free wireless file transfer on Android, thanks a lot. However, I'm into a small problem:

I want to use the ftp server with write access. The only option for this seems to be the Android Storage Access Framework (SAF) because the default file system access is read-only (is this intended or a bug?). Using SAF works, however I have to permit the SAF access over and over again, even the read permission resets itself. Is there any option for permanent SAF permissions?

And if this it not possible in the SAF way, is permanent write access possible using the root option (which of course requires rooting the device)? Since my phone is not rooted I could not test it, but if rooting will solve this I might think about it...

Thanks in advance!

Device: Moto Z2 Force Nash OS: LineageOS 15.1-20181228-Nightly-Nash Android 8.1 Every time i reboot the phone, ftpd will ask for a new key. choosing either option generate or cancel has no effect on it correct work. Log was attached below, and the suffix should be csv.

prim-ftpd-log-2018-12-30-00-37-22.txt

In FTP mode with super user mode selected, received jpeg file is corrupt.

Phone HTC 10. Operating system is LineageOS 7.1.2. Rooted. Primitive FTPD version is 5.10 downloaded from f-droid. Downloaded file with Filezilla 3.33.0 on Debian Sid.

Hi When I open settings, scroll down and then back up. the option for allowing anonymous logins toggles itself to ON. You might wanna check that out. I'm using latest version from F-Droid (4.8.2)

After upgrading from v4.4 to v4.5 some directories are not readable anymore. All settings of the phone and this app are the same. Downgrading back to v4.4 (after uninstalling v4.5) makes these directories readable again.

When on v4.5 I do ls -l / I get an "Input/output error" message for every directory that is not readable, and every unreadable directory looks like this: ?????????? ? ? ? ? ? storage.

Mode "Plain old filesystem" access is only read only and other non-root accesses doesn't work on internal storage of android 8.1

I check on setting app have all permission it requires.

I tried v3.0 from f-droid.org on Android 4.4.2 and only FTP starts. The OS is rooted and other services like Samba work fine. I only need sftp, can you please fix it?

the program does not listen and does not work on IPv4 protocol (no tcp). Listens only on IPv6 port (only tcp6). Where could the problem be?

Phone: Redmi Note 7 (LineageOS 16.0 (Android 9.0))

netstat -lptun | grep ftp tcp6 0 0 :::12377 :::* LISTEN 3483/org.primftpd

------------ Log ------------ "2019-11-30 10:34:57.9";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"onResume()";""; "2019-11-30 10:34:57.9";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"displayServersState()";""; "2019-11-30 10:34:57.9";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"checkServicesRunning()";""; "2019-11-30 10:34:57.9";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"updateButtonStates()";""; "2019-11-30 10:34:57.9";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"network connectivity changed, data str: 'null', action: 'android.net.conn.CONNECTIVITY_CHANGE'";""; "2019-11-30 10:34:59.5";"TRACE";"org.primftpd.PrimitiveFtpdActivity";"genKeysAndShowProgressDiag()";""; "2019-11-30 10:34:59.5";"TRACE";"org.primftpd.ui.GenKeysAsyncTask";"GenKeysAsyncTask()";""; "2019-11-30 10:34:59.5";"DEBUG";"org.primftpd.ui.GenKeysAsyncTask";"generating key";""; "2019-11-30 10:34:59.5";"TRACE";"org.primftpd.ui.GenKeysAsyncTask";"num of existing files: '0'";""; "2019-11-30 10:34:59.7";"TRACE";"org.primftpd.ui.GenKeysAsyncTask";"onPostExecute()";""; "2019-11-30 10:34:59.7";"TRACE";"org.primftpd.util.KeyFingerprintProvider";"calcPubkeyFingerprints()";""; "2019-11-30 10:34:59.7";"TRACE";"org.primftpd.PrimitiveFtpdActivity";"handleStart()";""; "2019-11-30 10:34:59.7";"TRACE";"org.primftpd.PrimitiveFtpdActivity";"hasPermission()";""; "2019-11-30 10:34:59.7";"TRACE";"org.primftpd.PrimitiveFtpdActivity";"isKeyPresent() -> true";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.services.SshServerService";"onStartCommand()";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.services.ServerServiceHandler";"handleMessage()";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"handling event, offset: 1575142499765 ms";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.services.ServerServiceHandler";"starting sftp-ssh server";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"displayServersState()";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"checkServicesRunning()";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"updateButtonStates()";""; "2019-11-30 10:34:59.7";"INFO";"org.apache.sshd.common.util.SecurityUtils";"BouncyCastle already registered as a JCE provider";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.services.FtpServerService";"onStartCommand()";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"ignoring event, offset: 7 ms";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.services.ServerServiceHandler";"handleMessage()";""; "2019-11-30 10:34:59.7";"DEBUG";"org.primftpd.services.ServerServiceHandler";"starting ftp server";""; "2019-11-30 10:34:59.8";"DEBUG";"org.apache.ftpserver.impl.DefaultFtpServerContext";"Intializing shared thread pool executor with max threads of 10";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.services.ServerServiceHandler";"acquiring wake lock (sftp-ssh)";""; "2019-11-30 10:34:59.8";"INFO";"org.apache.ftpserver.impl.DefaultFtpServer";"FTP server started";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.services.ServerServiceHandler";"wake lock already taken (ftp)";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/fe80::3c55:b7ff:fe6e:b0ec%dummy0', iface name: 'dummy0', disp name: 'dummy0', loopback: '...";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"Skipping IPv6 address 'fe80::3c55:b7ff:fe6e:b0ec%dummy0'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/::1', iface name: 'lo', disp name: 'lo', loopback: 'true'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/127.0.0.1', iface name: 'lo', disp name: 'lo', loopback: 'true'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/fe80::2a16:7fff:fee2:b36a%wlan0', iface name: 'wlan0', disp name: 'wlan0', loopback: 'false'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"Skipping IPv6 address 'fe80::2a16:7fff:fee2:b36a%wlan0'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/192.168.1.7', iface name: 'wlan0', disp name: 'wlan0', loopback: 'false'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/fe80::3c55:b7ff:fe6e:b0ec%dummy0', iface name: 'dummy0', disp name: 'dummy0', loopback: '...";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"Skipping IPv6 address 'fe80::3c55:b7ff:fe6e:b0ec%dummy0'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/::1', iface name: 'lo', disp name: 'lo', loopback: 'true'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/127.0.0.1', iface name: 'lo', disp name: 'lo', loopback: 'true'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/fe80::2a16:7fff:fee2:b36a%wlan0', iface name: 'wlan0', disp name: 'wlan0', loopback: 'false'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"Skipping IPv6 address 'fe80::2a16:7fff:fee2:b36a%wlan0'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.util.IpAddressProvider";"addr: '/192.168.1.7', iface name: 'wlan0', disp name: 'wlan0', loopback: 'false'";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.remotecontrol.TaskerReceiver";"sending tasker RequestQueryCondition";""; "2019-11-30 10:34:59.8";"DEBUG";"org.primftpd.remotecontrol.TaskerReceiver";"sending tasker RequestQueryCondition";""; "2019-11-30 10:35:06.7";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"onPause()";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"onStart()";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"loadPrefs()";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got anonymousLogin: false";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got userName: delete";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got password: delete...";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got startDir: /storage/emulated/0";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got announce: false";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got announceName: primitiveNote";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got wakelock: true";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got pubKeyAuth: false";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got 'which server': ALL";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got ftpPassivePorts: null";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got idleTimeout: null";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got 'port': 12355";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got 'secure port': 12377";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got showConnectionInfo: true";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got 'StorageType': PLAIN";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got safUrl: ";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got allowedIpsPattern: ";""; "2019-11-30 10:39:01.5";"DEBUG";"org.primftpd.PrimitiveFtpdActivity";"got 'logging': NONE";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.FtpServerService";"onDestroy()";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.ServerServiceHandler";"handleMessage()";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.ServerServiceHandler";"stopping ftp server";""; "2019-11-30 10:41:11.4";"DEBUG";"org.apache.ftpserver.impl.DefaultFtpServerContext";"Shutting down the thread pool executor";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.ServerServiceHandler";"releasing wake lock (ftp)";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.ServerServiceHandler";"stopSelf (ftp)";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.remotecontrol.TaskerReceiver";"sending tasker RequestQueryCondition";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.SshServerService";"onDestroy()";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.ServerServiceHandler";"handleMessage()";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.ServerServiceHandler";"stopping sftp-ssh server";""; "2019-11-30 10:41:11.4";"DEBUG";"org.apache.sshd.SshServer";"Closing SshServer[a4b3f19] gracefully";""; "2019-11-30 10:41:11.4";"DEBUG";"org.apache.sshd.common.io.mina.MinaServiceFactory";"Closing org.apache.sshd.common.io.mina.MinaServiceFactory@131d4ec gracefully";""; "2019-11-30 10:41:11.4";"DEBUG";"org.apache.sshd.common.io.mina.MinaServiceFactory";"org.apache.sshd.common.io.mina.MinaServiceFactory@131d4ec closed";""; "2019-11-30 10:41:11.4";"DEBUG";"org.apache.sshd.SshServer";"SshServer[a4b3f19] closed";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.ServerServiceHandler";"wake lock already released (sftp-ssh)";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.services.ServerServiceHandler";"stopSelf (sftp-ssh)";""; "2019-11-30 10:41:11.4";"DEBUG";"org.primftpd.remotecontrol.TaskerReceiver";"sending tasker RequestQueryCondition";""; "2019-11-30 10:41:13.8";"DEBUG";"org.primftpd.remotecontrol.TaskerReceiver";"sending tasker RequestQueryCondition";""; "2019-11-30 10:41:13.8";"DEBUG";"org.primftpd.remotecontrol.TaskerReceiver";"sending tasker RequestQueryCondition";""; "2019-11-30 10:46:51.3";"DEBUG";"org.primftpd.remotecontrol.TaskerReceiver";"sending tasker RequestQueryCondition";"";

CM13.0 with latest December Snapshot Nexus 6 & Nexus 7 Client Filezilla

It is impossible to create new folders.

" Error: Directory /sdcard/0Installation/ROM/Lineage: no such file or directory Error: Verzeichnisinhalt konnte nicht empfangen werden "

When I connect to prim-ftpd SFTP with Storage type "Super user" with Filezilla and browse to /data/data/com.whatsapp/databases, I can list the files and folders just fine. However, if I try to copy msgstore.db, I get error "Permission denied". If I use my File manager to copy the file to another folder, first - and copy it from there, everything works fine.

Thank you very much in advance. :+1:

Filesystem (SD or internal) only readable after Update to tfpd 5.0 on my Galaxy S8.

Same Problem with "Gutes, altes Dateisystem" and "SAF"

I'm using primitive ftpd v6.15 with the super user storage type. My phone is running Android 12, xiaomi.eu v13.0.15, rooted.

I'm using sftp to upload a file to the phone. The transfer appears to work fine and the file size is the same, but the timestamp is different on the phone. I noticed another issue where the timestamp was the created time instead of the modified time, but in this case, it is neither.

The original file created time is 12/3/2022 1:37:01 AM and the modified time is 12/13/2022 11:05:30 PM.

When I look at the file on the phone from a usb connection, it shows the timestamp as 2/8/2020 at 8:52 PM. When I look at the file on the phone from sftp, it shows the timestamp as 2/9/2020.

Windows 10 vs. sftp (psftp/putty) 12/13/2022 11:05 PM 179,746 backup.daily -rwxrwx--- 0 root everybod 179746 Feb 9 2020 backup.daily

Any ideas?

UPDATE: It's odd. I noticed after I rebooted the phone, it has the correct timestamp on the file. So I tried uploading it again. This time the timestamp had a future date, 2/16/2023 4:04 PM. Then I rebooted the phone, and it's correct, 12/15/2022 1:35 AM. If I copy the file using the usb connection, this doesn't happen. It only happens via sftp, and the timestamp is incorrect viewed from sftp or usb. Until I reboot the phone.

Good day. I really liked your program. But I don't have USB flash memory access on ATV10 (android 10). Pftpd doesn't even request access to usb flash. Other applications, in particular x-plore and sd maid have access and work correctly with usb. When trying to put a checkbox on Android Storage Access Framework (SAF), the setting is not saved. Could you solve this problem in the next release? Ready to test.

Usually, I use this app as local network with hotspot on android and wifi on pc. This time I tried with connecting both android and pc to other wifi. And after that app didn't open. Crash log: https://hastebin.com/roqurocidu

Android version: 11 OS: Ancient OS based on AOSP

Set prim-ftpd to read-only SAF mode and login:

Connected to s8.
sftp> ls  <TAB>
# the output is changed to
Connected to s8.
Connection closed.  
Connection closed
mcd@T500: ~
[255]$  # typing here does not show any characters. something is wrong with the terminal. sftp probably didn't exit cleanly.

Typing TAB breaks something.

$ sftp -v s8
OpenSSH_9.1p1, OpenSSL 1.1.1q  5 Jul 2022
debug1: Reading configuration data /home/mcd/.ssh/config
debug1: /home/mcd/.ssh/config line 9: Applying options for s8
debug1: /home/mcd/.ssh/config line 49: Applying options for *
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: auto-mux: Trying existing master
debug1: Control socket "/tmp/ssh_mux_192.168.178.98_1234_mcd" does not exist
debug1: Connecting to 192.168.178.98 [192.168.178.98] port 1234.
debug1: Connection established.
debug1: identity file /home/mcd/.ssh/t2s8new type 3
debug1: identity file /home/mcd/.ssh/t2s8new-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_9.1
debug1: Remote protocol version 2.0, remote software version ${POM.ARTIFACTID}-${POM.VERSION}
debug1: compat_banner: no match: ${POM.ARTIFACTID}-${POM.VERSION}
debug1: Authenticating to 192.168.178.98:1234 as 'mcd'
debug1: load_hostkeys: fopen /home/mcd/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: ecdh-sha2-nistp256
debug1: kex: host key algorithm: ssh-ed25519
debug1: kex: server->client cipher: aes128-ctr MAC: hmac-sha2-256 compression: none
debug1: kex: client->server cipher: aes128-ctr MAC: hmac-sha2-256 compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: SSH2_MSG_KEX_ECDH_REPLY received
debug1: Server host key: ssh-ed25519 SHA256:YXGPy6x88H4OkI/hKRROKmDqmJC4D/WDHhrXyyCatKU
debug1: load_hostkeys: fopen /home/mcd/.ssh/known_hosts2: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or directory
debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or directory
debug1: Host '[192.168.178.98]:1234' is known and matches the ED25519 host key.
debug1: Found key in /home/mcd/.ssh/known_hosts:29
debug1: rekey out after 4294967296 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 4294967296 blocks
debug1: get_agent_identities: bound agent to hostkey
debug1: get_agent_identities: ssh_fetch_identitylist: agent contains no identities
debug1: Will attempt key: /home/mcd/.ssh/t2s8new ED25519 SHA256:87b1x6GU1onTcOkumkKvP4svRY9jgpm/Hh+uc8BaMLk explicit
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: password,keyboard-interactive,publickey
debug1: Next authentication method: publickey
debug1: Offering public key: /home/mcd/.ssh/t2s8new ED25519 SHA256:87b1x6GU1onTcOkumkKvP4svRY9jgpm/Hh+uc8BaMLk explicit
debug1: Server accepts key: /home/mcd/.ssh/t2s8new ED25519 SHA256:87b1x6GU1onTcOkumkKvP4svRY9jgpm/Hh+uc8BaMLk explicit
Authenticated to 192.168.178.98 ([192.168.178.98]:1234) using "publickey".
debug1: setting up multiplex master socket
debug1: channel 0: new [/tmp/ssh_mux_192.168.178.98_1234_mcd]
debug1: channel 1: new [client-session]
debug1: Entering interactive session.
debug1: pledge: id
debug1: Sending subsystem: sftp
Connected to s8.
sftp> ls debug1: client_input_channel_req: channel 1 rtype exit-status reply 0
debug1: channel 1: free: client-session, nchannels 2
debug1: channel 0: free: /tmp/ssh_mux_192.168.178.98_1234_mcd, nchannels 1
Transferred: sent 2272, received 1512 bytes, in 2.0 seconds
Bytes per second: sent 1134.1, received 754.8
debug1: Exit status 0
Connection closed.  
Connection closed

here is the logfile. using primftp 6.14. prim-ftpd-log-2022-10-21-21-04-14.csv

win 10 ltsc + rclone Mi 11 + MIUI 13.0.9

./rclone sync D:\share ftp:down

2022/10/17 14:54:58 ERROR : test (4).xlsx: Failed to copy: Put mkParentDir failed: mkdir "down" failed: 425 Can't open passive connection.
2022/10/17 14:54:58 ERROR : test (5).xlsx: Failed to copy: Put mkParentDir failed: mkdir "down" failed: 425 Can't open passive connection.
2022/10/17 14:54:58 ERROR : test (1).xlsx: Failed to copy: Put mkParentDir failed: mkdir "down" failed: 425 Can't open passive connection.
2022/10/17 14:54:59 ERROR : test (3).xlsx: Failed to copy: update stor: 425 Can't open passive connection.
2022/10/17 14:54:59 ERROR : ftp://192.168.191.2:12345/down: not deleting files as there were IO errors
2022/10/17 14:54:59 ERROR : ftp://192.168.191.2:12345/down: not deleting directories as there were IO errors
2022/10/17 14:54:59 ERROR : Attempt 1/3 failed with 4 errors and: update stor: 425 Can't open passive connection.
2022/10/17 14:54:59 ERROR : test (1).xlsx: Failed to copy: Put mkParentDir failed: mkdir "down" failed: 425 Can't open passive connection.
2022/10/17 14:54:59 ERROR : test (4).xlsx: Failed to copy: Put mkParentDir failed: mkdir "down" failed: 425 Can't open passive connection.
2022/10/17 14:55:00 ERROR : test (5).xlsx: Failed to copy: update stor: 425 Can't open passive connection.
2022/10/17 14:55:00 ERROR : ftp://192.168.191.2:12345/down: not deleting files as there were IO errors
2022/10/17 14:55:00 ERROR : ftp://192.168.191.2:12345/down: not deleting directories as there were IO errors
2022/10/17 14:55:00 ERROR : Attempt 2/3 failed with 3 errors and: update stor: 425 Can't open passive connection.
2022/10/17 14:55:00 ERROR : test (1).xlsx: Failed to copy: Put mkParentDir failed: mkdir "down" failed: 425 Can't open passive connection.
2022/10/17 14:55:00 ERROR : test (5).xlsx: Failed to copy: Put mkParentDir failed: mkdir "down" failed: 425 Can't open passive connection.
2022/10/17 14:55:01 ERROR : ftp://192.168.191.2:12345/down: not deleting files as there were IO errors
2022/10/17 14:55:01 ERROR : ftp://192.168.191.2:12345/down: not deleting directories as there were IO errors
2022/10/17 14:55:01 ERROR : Attempt 3/3 failed with 2 errors and: Put mkParentDir failed: mkdir "down" failed: 425 Can't open passive connection.
2022/10/17 14:55:01 Failed to sync with 2 errors: last error was: Put mkParentDir failed: mkdir "down" failed: 425 Can't open passive connection.

There are 5 files in total, but only 3 files succeed, and there are a lot of error prompts.

prim-ftpd-log-2022-10-17-14-54-32.csv