The Secure Copy Protocol connector (SCP) transfers files to and from an SSH server via SCP.
Each SCP connector uploads to a specified folder and downloads from a set of folders on the remote SSH server.
Files that reach the SCP connector in the CData Arc flow are uploaded to the upload target folder, and files found in the download target folder(s) are downloaded and entered into the Arc flow. The connector supports upload and download filters to send and receive only specified file names and/or file extensions.
This section contains all of the configurable connector properties.
Settings related to establishing the connection to the remote SSH host.
- Connector Id The static, unique identifier for the connector.
- Connector Type Displays the connector name and a description of what it does.
- Connector Description An optional field to provide a free-form description of the connector and its role in the flow.
- Remote Host The hostname or IP address of the SSH server.
- Remote Port The port on which to connect to the SSH server.
Settings related to authenticating to the SSH server. Options vary based on the selected authentication mode.
- Authentication Mode The type of authentication to use with the SSH server.
- User The username credential for logging in to the SSH server.
- Password The password credential for logging in to the SSH server.
- Client Certificate The certificate with a private key to use during public key authentication.
- Certificate Password The password required to access the Client Certificate.
Settings related to verifying the SSH server’s identity.
- Server Thumbprint The thumbprint of the certificate that identifies the SSH server. You can also set this to a certificate file containing the server’s public key. When you test the connection, the connector prompts to accept/trust the thumbprint presented by the server.
Settings related to uploading files to the SSH server.
- Remote Path Files processed by the connector are uploaded to this remote folder.
Settings related to downloading from the SSH server.
- Remote Path The remote folder from which files are downloaded. Use a comma-delimited list to specify multiple paths.
- File Mask A glob pattern that determines which files in the Remote Path should be downloaded (e.g. *.txt).
- Delete files (after download) Check this to delete successfully downloaded files from the SSH server.
Settings related to the automatic processing of files by the connector.
- Upload Whether files arriving at the connector are automatically uploaded.
- Retry Interval The amount of time before a failed upload is retried.
- Max Attempts The maximum number of times the connector processes the input file. Success is measured based on a successful server acknowledgement. If this is set to 0, the connect retries the file indefinitely.
- Download Whether the connector should automatically poll the remote download path(s) for files to download.
- Download Interval The interval between automatic download attempts.
- Minutes Past the Hour The minutes offset for an hourly schedule. Only applicable when the interval setting above is set to Hourly. For example, if this value is set to 5, the automation service downloads at 1:05, 2:05, 3:05, etc.
- Time The time of day that the attempt should occur. Only applicable when the interval setting above is set to Daily, Weekly, or Monthly.
- Day The day on which the attempt should occur. Only applicable when the interval setting above is set to Weekly or Monthly.
- Minutes The number of minutes to wait before attempting the download. Only applicable when the interval setting above is set to Minute.
- Cron Expression A five-position string representing a cron expression that determines when the attempt should occur. Only applicable when the interval setting above is set to Advanced.
Settings related to the allocation of resources to the connector.
- Max Workers The maximum number of worker threads consumed from the threadpool to process files on this connector. If set, this overrides the default setting on the Settings > Automation page.
- Max Files The maximum number of files sent by each thread assigned to the connector. If set, this overrides the default setting on the Settings > Automation page.
These are a collection of settings that identify and authenticate to the proxy through which the SCP connection should be routed. By default, this section uses the global settings on the Settings Page. Clear the checkbox to supply settings specific to your connector.
- Proxy Type The protocol used by a proxy-based firewall.
- Proxy Host The name or IP address of a proxy-based firewall.
- Proxy Port The TCP port for a proxy-based firewall.
- Proxy User The user name to use to authenticate with a proxy-based firewall.
- Proxy Password A password used to authenticate to a proxy-based firewall.
- Authentication Scheme Leave the default None or choose from one of the following authentication schemes: Basic, Digest, Proprietary, or NTLM.
Settings not included in the previous categories.
- Delete Command The command to use when deleting files after download.
- Processing Delay The amount of time (in seconds) by which the processing of files placed in the Input folder is delayed. This is a legacy setting. Best practice is to use a File connector to manage local file systems instead of this setting.
- Recurse Whether to download files in subfolders of the target remote path.
- SSH Encryption Algorithms A comma-delimited list of algorithms to use during SSH encryption. By default, all algorithms are enabled. The following algorithms are supported:
aes256-ctr, aes256-cbc, aes192-ctr, aes192-cbc, aes128-ctr, aes128-cbc, 3des-ctr, 3des-cbc, cast128-cbc, blowfish-cbc, arcfour, arcfour128, arcfour256, firstname.lastname@example.org, email@example.com, firstname.lastname@example.org
- Local File Scheme A scheme for assigning filenames to messages that are output by the connector. You can use the following macros to reference contextual information:
%ConnectorId%, %Filename%, %FilenameNoExt%, %Ext%, %ShortDate%, %LongDate%, %RegexFilename%, %DateFormat%, %Header%.
For example: %FilenameNoExt%_%ShortDate%%Ext%
- Timeout The duration the connector will wait for a connection response before throwing a timeout error.
- Upload File Permissions The file permissions to set on files uploaded by the connector.
- Save to Sent Folder Check this to copy files processed by the connector to the Sent folder for the connector.
- Sent Folder Scheme Instructs the connector to group messages in the Sent folder according to the selected interval. For example, the Weekly option instructs the connector to create a new subfolder each week and store all messages for the week in that folder. The blank setting tells the connector to save all messages directly in the Sent folder. For connectors that process many messages, using subfolders helps keep messsages organized and improves performance.
- Log Level The verbosity of logs generated by the connector. When you request support, set this to Debug.
- Log Subfolder Scheme Instructs the connector to group files in the Logs folder according to the selected interval. For example, the Weekly option instructs the connector to create a new subfolder each week and store all logs for the week in that folder. The blank setting tells the connector to save all logs directly in the Logs folder. For connectors that process many transactions, using subfolders helps keep logs organized and improves performance.
- Log Messages Check this to have the log entry for a processed file include a copy of the file itself. If you disable this, you might not be able to download a copy of the file from the Input or Output tabs.
Miscellaneous settings are for specific use cases.
- Other Settings Enables you to configure hidden connector settings in a semicolon-separated list (for example,
setting1=value1;setting2=value2). Normal connector use cases and functionality should not require the use of these settings.
Establishing a Connection
The following settings are required to connect to a remote SSH server:
- Remote Host
- Remote Port
- Authentication Mode
- Password or Client Certificate/Certificate Password
- Server Thumbprint
When you test the connection to the server, the connector prompts to accept/trust the thumbprint of the server’s public key.
The SCP connector uploads files from the Input tab. Files are automatically uploaded to the SSH server if Upload Automation is enabled in the connector.
Set the Remote Path to the folder on the remote SSH server where files should be uploaded. The application changes directories to the specified folder after logging in to the server.
If a file is not uploaded, the connector attempts to upload it again after the Retry Interval has elapsed. This process continues until the Max Attempts setting has been reached, after which the connector raises an error and the file is no longer sent automatically.
Downloaded files are displayed in the Output tab of the connector, or passed along to the next connector in the flow. Files are automatically downloaded from the SSH server if Download Automation is enabled in the connector, and can be manually downloaded by clicking the Receive button in the Output tab.
Set the Remote Path to the folder on the remote SSH server from which files should be downloaded. The application changes directories to the specified folder after logging in to the server. File Mask filters files so that only filenames matching the glob pattern are downloaded.
You can use the Delete files (after download) setting to delete files on the remote server after they are successfully downloaded. On the Output tab, click Receive to test the settings and retrieve the matching files from the server.