FTP Connector

The FTP Connector transfers files to and from a remote FTP server.

Key Capabilities

File transfer protocol support with FTPS (FTP over TLS/SSL) and traditional FTP
Active and passive mode support with comprehensive firewall compatibility
Resume capability for interrupted uploads and downloads
Advanced authentication including certificate-based client authentication
Connection pooling and temporary file handling for reliable transfers
Optional caching to ensure only new or updated files are downloaded

Overview

Each FTP Connector connects uploads to a specified folder and downloads from a set of folders on the remote FTP server. Files that reach the FTP Connector in the 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 only send and receive specified file names and/or file extensions.

Connector Configuration

This section contains all of the configurable connector properties.

Settings Tab

Host Configuration

Settings related to establishing the connection to the remote FTP host.

Setting	Description
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 FTP server.
TLS Type	How to negotiate TLS/SSL when connecting to the server. Choose Explicit to establish a plain text connection where TLS/SSL is then started with an explicit command. Choose Implicit to immediately negotiate TLS/SSL without establishing a plain text connection.
Remote Port	The port on which to connect to the FTP server.

Client Authentication

Settings related to authenticating to the FTP server.

Setting	Description
User Name	The username for logging in to the FTP server.
Password	The password for logging in to the FTP server.

Server Authentication

Setting related to verifying the FTP server’s identity.

Setting	Description
Server Public Certificate	The public key certificate used to verify the identity of a TLS/SSL server. If the target server uses TLS/SSL, set this field to the certificate that identifies the server. If the server’s certificate is not available, you can leave this setting blank to allow the underlying OS/JVM to perform certificate validation, or set it to `Any Certificate` to implicitly trust the server’s identity.

Upload

Setting related to uploading files to the FTP server.

Setting	Description
Remote Path	Files processed by the connector are uploaded to the specified remote folder. You can use macros to dynamically create dated folders (such as year or month folders) in your path. For more information, see Macros.

Download

Settings related to downloading from the FTP server.

Setting	Description
Remote Path	The remote folder from which files are downloaded. Use a comma-delimited list to specify multiple paths. You can use macros to dynamically create dated folders (such as year or month folders) in your path. For more information, see Macros.
File Mask	A glob pattern that determines which files within the Remote Path should be downloaded (for example, *.txt).
Delete files (after received)	Check this to delete successfully downloaded files from the FTP server.

Caching

Settings related to caching and comparing files between multiple downloads.

Setting	Description
File Size Comparison	Check this to keep a record of downloaded file names and sizes. Previously downloaded files are skipped unless the file size is different than the last download.
Timestamp Comparison	Check this to keep a record of downloaded file names and last-modified timestamps. Previously downloaded files are skipped unless the timestamp is different than the last download.

Arc はリソースキャッシュを自動的にクリーンアップします。この処理はすべての受信サイクルの間にバックグラウンドで実行され、リモートサーバー上にすでに存在しないファイルの古いキャッシュエントリを削除します。これにより、手動での操作を必要とせずにキャッシュサイズを管理可能な状態に保ちます。

デフォルトでは、ファイルは30 日間保持されますが、Advanced タブのOther Settings フィールドにあるResourceCacheRetentionDays 設定を使用して、お使いの環境に合わせて調整できます。例えば、ResourceCacheRetentionDays=15 とすると、ファイルは削除されるまで15 日間保持されます。

When you enable caching, the file names are case-insensitive. For example, the connector cannot distinguish between TEST.TXT and test.txt.

Advanced Tab

TLS Client Authentication

Settings related to client authentication when two-way TLS authentication is required.

Setting	Description
Client Certificate	The private certificate presented during TLS client authentication.
Client Certificate Password	The password required to access the TLS client certificate.

Server Commands

Advanced Settings

Settings not included in the previous categories.

Setting	Description
Account	The Windows user account whose credentials should be presented to the FTP server.
Active Mode	Check this to enable Active mode on the remote FTP server. Keep in mind that Passive mode is less likely to result in firewall interference with the connection.
Clear Command Channel	Check this to send FTP commands using a cleartext channel instead of an encrypted channel.
Clear Data Channel	Check this to have the application use a clear data channel when communicating with the FTP server.
Use Connection Pooling	Check this to have the connector utilize a pool to access and store connections. This is useful in scenarios where the server places restrictions on the frequency of logon attempts.
Download Excluded Extensions	A comma-delimited list of file extensions that should not be downloaded by the connector.
Download Excluded Prefixes	A comma-delimited list of prefixes that should not be downloaded. The connector skips filenames that begin with these prefixes.
EPSV	Check this to use extended passive mode. This might be necessary if you need to use a protocol other than IPv4.
FSwitch	Used in conjunction with Simple Dir List. Check this to restrict the directory listing to files only.
Max Download Files	The maximum number of files to be downloaded from the SFTP server in one polling interval. Set to -1 to allow all files to be downloaded.
Minimum File Size	The minimum file size to process, in bytes. If a file being uploaded is smaller than the specified size, it is finalized as Skipped. For files being downloaded, the connector adds a transaction log entry indicating that the file was skipped because of its size.
Maximum File Size	The maximum file size to process, in bytes. If a file being uploaded is larger than the specified size, it is finalized as Skipped. For files being downloaded, the connector adds a transaction log entry indicating that the file was skipped because of its size.
Monitor File Growth	Check this to have the application store the file sizes of the remote files between polling intervals, and only download files that do not change in size. This prevents the connector from downloading files that are still in the process of being written on the server.
Passive Connection Address	Only used when Active Mode is not checked. If unchecked, the application parses the remote host to send replies from the previous server response. If you check this, the application uses the value of the Remote Host setting.
Prot for Implicit TLS	Tells the server that the data channel is protected for implicit TLS connections. Select the TLS type on the Settings tab.
Recurse	Check this to download files in subfolders of the target remote path. The subdirectories are preserved for the received files.
Resume Downloads	If enabled, when an error occurs during a file download, the connector stores the portion of the file that was downloaded and attempts to download the remainder of the file on the next download attempt.
Resume Uploads	If enabled, when an error occurs during a file upload, the connector notes the number of bytes that were transferred and attempts to upload the remainder of the file on the next upload attempt.
Simple Dir List	Check this when you need a simple directory listing command for servers that send back long responses that cannot be parsed. After you set this, if the connector is still unable to parse the directory listing, add the FSwitch setting to restrict the directory listing to files only.
TLS Enabled Protocols	The list of TLS/SSL protocols supported when establishing outgoing connections. Best practice is to only use TLS protocols. Keep in mind that SSLv2 and SSLv3 are considered vulnerable and should only be used if your partner does not support higher versions. Keep in mind that TLS v1.3 is not universally adopted, and might be refused if the destination server does not support them.
Temp Download Extension	A temporary file extension to append to file downloads while the transfer is in progress.
Temp Upload Extension	A temporary file extension to append to file uploads while the transfer is in progress.
Temp Upload Path	A temporary path on the remote FTP server where files are uploaded. The file is moved into the permanent upload path after the transfer is complete.
Temp Upload Prefix	A temporary file prefix to prepend to file uploads while the transfer is in progress.
Timeout	The duration the connector waits for a connection response before throwing a timeout error.
Transfer Mode	Whether files should be transferred as ASCII or binary. If set to Default, the server chooses the transfer mode.
Upload Single Transaction	Check this to upload all files in a single transaction. By default (unchecked), the application logs off from the server after each upload.
Local File Scheme	A scheme for assigning filenames to messages that are output by the connector. You can use macros in your filenames dynamically to include information such as identifiers and timestamps. For more information, see Macros.
Receive Filter	A glob pattern filter to determine which files should be downloaded from the remote storage (for example, .txt). You can use negative patterns to indicate files that should not* be downloaded (for example, -.tmp). Use this setting when you need multiple File Mask* patterns. Multiple patterns can be separated by commas, with later filters taking priority except when an exact match is found.
Use MLSD for directory listings	Check this to use the MLSD command to return detailed directory listings. This might not be supported on legacy FTP servers, which might return an error such as Command not understood. Uncheck this to address that error on legacy servers.
Processing Delay	The amount of time (in seconds) by which the processing of files placed in the Transactions tab is delayed. This is a legacy setting. Best practice is to use a File connector to manage local file systems instead of this setting.

Proxy Settings

これらは、接続のルーティング先となるプロキシを識別し認証するための一連の設定です。デフォルトでは、このセクションはSecurity Settings ページのProxy Settings 部分にあるグローバル設定を使用します。チェックボックスをオフにすると、コネクタ固有の設定を指定できます。

設定	説明
Proxy Type	プロキシベースのファイアウォールで使用されるプロトコル。
Proxy Host	プロキシベースのファイアウォールの名前またはIP アドレス。
Proxy Port	プロキシベースのファイアウォールのTCP ポート。
Proxy User	プロキシベースのファイアウォールで認証するために使用するユーザー名。
Proxy Password	プロキシベースのファイアウォールで認証するために使用するパスワード。
Authentication Scheme	デフォルトのNone のままにするか、次の認証スキームのいずれかを選択します：Basic、Digest、Proprietary、またはNTLM。

Logging

ログの作成と保存を制御する設定です。

設定	説明
Log Level	コネクタが生成するログの詳細度です。サポートを依頼する際は、これをDebug に設定してください。
Log Subfolder Scheme	選択した間隔に従って、コネクタがLogs フォルダ内のファイルをグループ化するよう指示します。Weekly オプション（デフォルト）は、コネクタが毎週新しいサブフォルダを作成し、その週のすべてのログをそのフォルダに保存するよう指示します。この設定を空白のままにすると、コネクタはすべてのログをLogs フォルダに直接保存します。多数のトランザクションを処理するコネクタでは、サブフォルダを使用することでログを整理しやすくなり、パフォーマンスが向上します。
Log Messages	処理したファイルのログエントリにファイル自体のコピーを含めるには、これをオンにします。これを無効にすると、Transactions タブからファイルのコピーをダウンロードできなくなる場合があります。

Miscellaneous

Miscellaneous 設定は、特定のユースケース向けの設定です。

設定	説明
Other Settings	非表示のコネクタ設定をセミコロン区切りのリストで設定できます（例：`setting1=value1;setting2=value2`）。通常のコネクタのユースケースや機能では、これらの設定の使用は必要ありません。

Automation Tab

Automation Settings

Settings related to the automatic processing of files by the connector.

Setting	Description
Upload	Whether files arriving at the connector should automatically be uploaded.
Retry Interval	The number of minutes 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 you set this to 0, the connect retries the file indefinitely.
Download	Whether the connector should automatically poll the remote download path(s) for files to 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.
Start Date and Time	The date and time at which the automation first runs. Every run after that follows the interval setting above. The last and next run times appear in the Automation Status section.

Automation Status

Performance

コネクタへのリソースの割り当てに関する設定です。

設定	説明
Max Workers	このコネクタでファイルを処理するためにスレッドプールから消費されるワーカースレッドの最大数です。設定すると、Advanced Settings ページのPerformance Settings 部分にあるデフォルト設定が上書きされます。
Max Files	コネクタに割り当てられた各スレッドが送信するファイルの最大数です。設定すると、Advanced Settings ページのPerformance Settings 部分にあるデフォルト設定が上書きされます。

Alerts Tab

SLAs Tab

Establishing a Connection

Connecting to the remote FTP server requires the following settings:

Remote Host
TLS Type
Remote Port
User Name
Password

FTP servers might also require Server Public Certificate (on the Settings tab) and/or TLS Client Authentication (on the Advanced tab).

Uploading Files

The FTP Connector uploads files from the Transactions tab. Files are automatically uploaded to the FTP server if Upload Automation is enabled in the connector. Remote Path should be set to the folder on the remote FTP server where files should be uploaded. You can use macros to dynamically create dated folders (such as year or month folders). The application changes directories to the specified folder after logging in to the server. You can set a temporary upload extension, prefix, or path on the Advanced tab to ensure that files have been fully transferred before they end up in the Remote Path folder. If any files could not be uploaded, the connector attempts to send them again after the Retry Interval minutes have elapsed. This process continues until the Max Attempts setting is reached, after which the connector raises an error and the file is no longer sent automatically.

Downloading Files

Downloaded files are displayed in the Transactions tab of the connector, or passed along to the next connector in the flow. Files are automatically downloaded from the FTP server if Download Automation is enabled in the connector, and can be manually downloaded by clicking Receive Files button on the Transactions tab. Remote Path should be set to the folder on the remote FTP server from which files should be downloaded. You can use macros to dynamically create dated folders (such as year or month folders). The application changes directories to the specified folder after logging in to the server. The File Mask property filters files so that only filenames matching the glob pattern are downloaded from the server. You can set a temporary download extension or prefix on the Advanced tab to ensure that files have been fully transferred before they end up in the Transactions tab. You can use the Delete files (after download) setting to delete the files on the remote server after successfully downloading them. After configuring, files are downloaded according to the Receive Automation settings, or by manually clicking Receive Files on the Transactions tab.

Subfolder Headers

If Recurse is checked on the Advanced tab, when receiving a file from the Remote Path in the FTP connector:

The message for the file that is received contains a Subfolder header in its metadata.
This header contains the subfolder, relative to the Remote Path in the FTP connector, that the file was received from.
This subfolder header is supported by other connectors that support a subfolder header in Send operations.

When sending files, if a Subfolder header is present on the message that is sent to the Upload Path in the FTP connector:

The file is placed in the subfolder, relative to the Upload Path in the FTP connector, that is specified in the subfolder header.
The subfolder is created if permissions are available.

はじめに

フロー

EDI トレーディングパートナー管理コンソール

コネクタ

マッピング

API と自動化

ハウツーガイド

スクリプティング

ソフトウェアライセンスとサードパーティ著作権

Key Capabilities

Overview

Connector Configuration

Settings Tab

Host Configuration

Client Authentication

Server Authentication

Upload

Download

Caching

Advanced Tab

TLS Client Authentication

Server Commands

Advanced Settings

Proxy Settings

Logging

Miscellaneous

Automation Tab

Automation Settings

Automation Status

Performance

Alerts Tab

SLAs Tab

Establishing a Connection

Uploading Files

Downloading Files

Subfolder Headers

Macros

Examples

​Key Capabilities

​Overview

​Connector Configuration

​Settings Tab

​Host Configuration

​Client Authentication

​Server Authentication

​Upload

​Download

​Caching

​Advanced Tab

​TLS Client Authentication

​Server Commands

​Advanced Settings

​Proxy Settings

​Logging

​Miscellaneous

​Automation Tab

​Automation Settings

​Automation Status

​Performance

​Alerts Tab

​SLAs Tab

​Establishing a Connection

​Uploading Files

​Downloading Files

​Subfolder Headers

​Macros

​Examples

Key Capabilities

Overview

Connector Configuration

Settings Tab

Host Configuration

Client Authentication

Server Authentication

Upload

Download

Caching

Advanced Tab

TLS Client Authentication

Server Commands

Advanced Settings

Proxy Settings

Logging

Miscellaneous

Automation Tab

Automation Settings

Automation Status

Performance

Alerts Tab

SLAs Tab

Establishing a Connection

Uploading Files

Downloading Files

Subfolder Headers

Macros

Examples