Customize upload and download

In the Number of connections field, specify the maximum number of connections to be supported simultaneously.

In the Send keep alive messages each field, specify how often you want CLion to send commands to the server to reset the timeout and thus preserve the connection.

In the Encoding for client-server communication field, specify the encoding that matches the encoding used by your server. Accept the default value if you are not sure that it supports UTF-8 encoding.

To set the client to the passive mode, select the Passive mode checkbox. In this mode, the client on your machine connects to the server to inform about being in the passive mode, receives the port number to listen to, and established data connection through the port with the received number. This mode is helpful when your machine is behind a firewall.

To have the hidden files and directories (with names starting with a dot .) shown in the Server Browser Tool Window, select Show and process hidden files.

Select Compatible with old version of listing children in the Use LIST command area to ensure compatibility in child file naming with your FTP server.

This option is helpful if the remote FTP server reports the following error:

Selecting this option may slow down synchronization with the server.

Select Instead of MLSD in the Use LIST command area to use the standard LIST command for listing instead of the MLSD command. This lets you avoid problems, for example, failure during upload with the Invalid descendent file name exception if the FTP server supports MLSD and returns cdir.

In the Number of connections field, specify the maximum number of connections to be supported simultaneously.

In the Send keep alive messages each field, specify how often you want CLion to send commands to the server to reset the timeout and thus preserve the connection.

From the Keep alive command list, choose the commands to be sent to the server to reset the timeout and thus preserve the connection.

TLS: the method of Transfer Layer Security. Select Explicit to use the same port as Plain (unsecured) mode or Implicit to use a dedicated port.

Data channel protection level: select Clear for non-secured connection or Private for secured connection.

Reuse SSL session: select to reuse the security contract, including key and algorithm agreement information, established during SSL connection.

Disable TLS 1.3: select to disable TLS 1.3 features and have CLion fall back to connecting via TLS 1.2. Use this option if you experience issues with establishing a connection to a server or uploading certain files.

To set the client to the passive mode, select the Passive mode checkbox. In this mode, the client on your machine connects to the server to inform about being in the passive mode, receives the port number to listen to, and established data connection through the port with the received number. This mode is helpful when your machine is behind a firewall.

To have the hidden files and directories (with names starting with a dot .) shown in the Server Browser Tool Window, select Show and process hidden files.

Select Compatible with old version of listing children in the Use LIST command area to ensure compatibility in child file naming with your FTP server.

This option is helpful if the remote FTP server reports the following error:

Selecting this option may slow down synchronization with the server.

Select Instead of MLSD in the Use LIST command area to use the standard LIST command for listing instead of the MLSD command. This lets you avoid problems, for example, failure during upload with the Invalid descendent file name exception if the FTP server supports MLSD and returns cdir.