ftp transfer

  • 03 Sep

    Can’t open data connection for ftp transfer

    Can’t open data connection for ftp transfer

    Q: I’m using the attached FTP source that I have set to get files, but I’m getting an error when reading the directory. I’m able to access the folder using Cyberduck fine with the same settings. Below is the log showing the response I get.  I’m using v2024.2.24.0. Please let me know if you need anything else to troubleshoot.

    A: It looked like the system was not able to open a data connection to the FTP server (425 Can’t open data connection for transfer) and we asked the user to switch be to ‘Active’ mode. FTP is using two channels, a command and a data channel. So if you are able to connect, then you know at least the command channel is working. If you are not able to receive directory listings, then you know something is wrong with the data channel. The data channel can be used in active and passive mode (passive mode = default).

    Reply user: “That seemed to work. Thank you.”

    Connecting to ftp_useast.xxxxxxxx.com:22

    Connection successful

    Server System: 220-Xxxxx Secure FTP

    220 **Authorized Access Only**

    Request Path: /PAX_Test_Xpance

    Response Path: /PAX_Test_Xpance

    List Directory: /PAX_Test_Xpance/

    List Directory /PAX_Test_Xpance/ Error

    Disconnected from ftp_useast.xxxxxxxx.com:22

    8/20/2024 4:14:07 PM FTPSCheckConnected, CK Login Reply: 220-Xxxxxx Secure FTP
    220 **Authorized Access Only**
    8/20/2024 4:14:07 PM FTPSCheckConnected, CK Request Path after Login: /
    8/20/2024 4:14:07 PM FTPSCheckConnected, CK Change Path to /PAX_Test_Xpance
    8/20/2024 4:14:07 PM FTPSCheckConnected, CK Request Path after Change: /PAX_Test_Xpance/
    8/20/2024 4:14:17 PM FTPListDirectory, CK GetDirCount Error: ChilkatLog:
    GetDirCount:
    DllDate: Jan 27 2024
    ChilkatVersion: 9.5.0.97
    UnlockPrefix: CPSFBE
    UnlockStatus: 2
    Architecture: Little Endian; 64-bit
    Language: Delphi DLL
    VerboseLogging: 0
    listPattern: *
    fetchDirListing:
    pattern: *
    supportsMLSD: 1
    fetchDirListing2:
    setupDataConnection:
    active transfer mode
    setupActiveDataSocket:
    Created data listen socket
    Using ephemeral port range for Active data connection.
    dataPort: 51222
    portIpAddress: 192.168.xxx.xxx
    MyIPv4: 192,168,xxx,xxx,200,22
    sendCommand:
    sendingCommand: PORT 192,168,xxx,xxx,200,22
    –sendCommand
    readCommandResponse:
    replyLineQP: 200 Port command successful
    –readCommandResponse
    –setupActiveDataSocket
    –setupDataConnection
    sendCommand:
    sendingCommand: MLSD
    –sendCommand
    completeDataConnection:
    acceptDataConnection:
    controlChannelReply:
    Reading intermediate response..
    readCommandResponse:
    replyLineQP: 150 Opening data channel for directory listing of “/PAX_Test_Xpance”

                  –readCommandResponse
    –controlChannelReply
    controlChannelReply:
    Reading final response..
    readCommandResponse:
    replyLineQP: 425 Can’t open data connection for transfer of “/PAX_Test_Xpance”

                  –readCommandResponse
    Final response indicates error.
    –controlChannelReply
    –acceptDataConnection
    Failed to accept data connection.
    –completeDataConnection
    Failed to complete the data connection.
    –fetchDirListing2
    –fetchDirListing
    Failed to get and cache directory listing…
    N: -1
    Failed.
    –GetDirCount

    If you need any help with this ‘data connection for ftp transfer’ question, please let us know.

    Best Regards,

    Limagito Team

    #ftp #managedfiletransfer #filetransfer #filemanagement

     

    By Limagito-Team FTP ,
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