OFTPClient Component

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The OFTPClient component implements the Odette File Transfer Protocol.

Syntax

TibeOFTPClient

Remarks

The OFTPClient component may be used to send and receive OFTP files to and from an OFTP server.

Receiving Files

The OFTPClient ReceiveFiles function requires certain server properties be set. You must set the RemoteHost property to the remote location of the desired OFTP server. You may also set a RemotePort if the server is not set to the default protocol port. For client authorization, you must set the ClientSSIDCode, ClientSFIDCode, and ClientPassword properties. And, for server authentication, you must set the ServerSSIDCode, ServerSFIDCode, and ServerPassword properties.

The component will connect to the OFTP server and download all files in the server's outgoing queue, and write these files to the directory specified by DownloadDirectory. The component creates a default location on the local machine based on the values of the DownloadDirectory and the Virtual Filename as received from the server. If a different location is preferred, you may set the LocalFile parameter of the StartTransfer event.

Sending Files

The OFTPClient SendFile function requires the same server and authentication properties to be set as the ReceiveFiles function.

The component will connect to the OFTP server and upload the file contained by the LocalFile parameter. It uses the name specified by VirtualFileName when sending to the server. If this is not specified, the filename of the local file is parsed and used as the virtual filename.

Property List

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The following is the full list of the properties of the component with short descriptions. Click on the links for further details.

Method List

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The following is the full list of the methods of the component with short descriptions. Click on the links for further details.

Event List

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The following is the full list of the events fired by the component with short descriptions. Click on the links for further details.

Config Settings

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The following is a list of config settings for the component with short descriptions. Click on the links for further details.

Certificate Property (OFTPClient Component)

The current selected certificate.

Syntax

property Certificate: TibeCertificate read get_Certificate write set_Certificate;

Remarks

This property is populated when a specified certificate is found or loaded by the component. Certificate is used for specifying private keys. Set this property to a valid Certificate object to perform different operations such as session authentication, signing a file or receipt, or decryption. To set a certificate, you may set the Encoded field to the encoded certificate. To select a certificate, use the Store and Subject fields.

Please refer to the Certificate type for a complete list of fields.

ClientPassword Property (OFTPClient Component)

The client's password.

Syntax

property ClientPassword: String read get_ClientPassword write set_ClientPassword;

Default Value

''

Remarks

The password assigned to the client in the bilateral agreement. This property must be a string of no more than 8 characters long.

ClientSFIDCode Property (OFTPClient Component)

Client's SFID code.

Syntax

property ClientSFIDCode: String read get_ClientSFIDCode write set_ClientSFIDCode;

Default Value

''

Remarks

The SFID code identifies the origin or destination party that is sending or receiving a file, while the SSID code identifies the party that a session is established with. If the SFID and SSID codes do not match, then the party the session is established with is acting as an intermediary, and the party identified by the SFID code is either the origin or final destination.

When acting as an intermediary the component will not perform any security services (i.e. sign, verify, encrypt, decrypt). Security services are to be performed by the origin or destination only. Data should simply be passed along by an intermediary.

ClientSSIDCode Property (OFTPClient Component)

The client's SSID code.

Syntax

property ClientSSIDCode: String read get_ClientSSIDCode write set_ClientSSIDCode;

Default Value

''

Remarks

The identification code of the client. This code may be less than, but no more than 25 characters long. Generally, SSID codes have the following format as specified in RFC 2204 that is based on ISO 6523:

Compress Property (OFTPClient Component)

Whether or not to compress the outgoing file.

Syntax

property Compress: Boolean read get_Compress write set_Compress;

Default Value

false

Remarks

When sending a file to the trading partner, set this to true for the component to compress the file before sending. The file will first be compressed to a temporary file before being sent.

Note that this is only applicable when Version 2.0 of the protocol is used as indicated by Version.

This property is not available at design time.

Connected Property (OFTPClient Component)

Shows whether the component is connected.

Syntax

property Connected: Boolean read get_Connected;

Default Value

false

Remarks

Use this property to determine whether the component is connected to the remote host or not.

Use the Connect and Disconnect methods to manage the connection.

This property is read-only and not available at design time.

DownloadDirectory Property (OFTPClient Component)

Download directory.

Syntax

property DownloadDirectory: String read get_DownloadDirectory write set_DownloadDirectory;

Default Value

'./'

Remarks

This property contains the location on disk of the folder the component will write received files to. The default for this property is "./", which is the current working directory.

Note: If this property is set to empty string data will not be written to disk and instead will be available through the Transfer event.

EncryptionAlgorithm Property (OFTPClient Component)

The encryption algorithm.

Syntax

property EncryptionAlgorithm: TibeOftpclientEncryptionAlgorithms read get_EncryptionAlgorithm write set_EncryptionAlgorithm;

TibeOftpclientEncryptionAlgorithms = (
  encra3DES,
  encraAES
);

Default Value

encra3DES

Remarks

In order to use encryption, you must set the VirtualFileSecurityLevel property. The supported algorithms for encryption are:

This property is not available at design time.

Firewall Property (OFTPClient Component)

A set of properties related to firewall access.

Syntax

property Firewall: TibeFirewall read get_Firewall write set_Firewall;

Remarks

This is a Firewall-type property, which contains fields describing the firewall through which the component will attempt to connect.

Please refer to the Firewall type for a complete list of fields.

LocalHost Property (OFTPClient Component)

The name of the local host or user-assigned IP interface through which connections are initiated or accepted.

Syntax

property LocalHost: String read get_LocalHost write set_LocalHost;

Default Value

''

Remarks

This property contains the name of the local host as obtained by the gethostname() system call, or if the user has assigned an IP address, the value of that address.

In multihomed hosts (machines with more than one IP interface) setting LocalHost to the IP address of an interface will make the component initiate connections (or accept in the case of server components) only through that interface. It is recommended to provide an IP address rather than a hostname when setting this property to ensure the desired interface is used.

If the component is connected, the LocalHost property shows the IP address of the interface through which the connection is made in internet dotted format (aaa.bbb.ccc.ddd). In most cases, this is the address of the local host, except for multihomed hosts (machines with more than one IP interface).

Note: LocalHost is not persistent. You must always set it in code, and never in the property window.

MaxRecordSize Property (OFTPClient Component)

The maximum length of a given record.

Syntax

property MaxRecordSize: Integer read get_MaxRecordSize write set_MaxRecordSize;

Default Value

0

Remarks

This value determines the maximum length for a record in the outgoing virtual file. When VirtualFileFormat has been set to ffUnstructured or ffText, this value must be zero. When ffFixed or ffVariable, this must be set to a value greater than 0, containing the maximum line length of the outgoing file.

Overwrite Property (OFTPClient Component)

Whether or not the component should overwrite files during transfer.

Syntax

property Overwrite: Boolean read get_Overwrite write set_Overwrite;

Default Value

false

Remarks

This property is a value indicating whether or not the component should overwrite downloaded files. If Overwrite is false, an error will be thrown whenever the local file exists before a receive operation.

RecipientCert Property (OFTPClient Component)

The recipient certificate of the message.

Syntax

property RecipientCert: TibeCertificate read get_RecipientCert write set_RecipientCert;

Remarks

This property specifies the certificate to use when verifying signed files and receipts as well as encrypting files to be sent. This property must be set when SecureAuthentication has been set to true, sending a file and VirtualFileSecurityLevel has been set to slEncrypted or slEncryptedAndSigned, SignedReceipt has been set to true, or a signed file is being received and the server has not included the certificate in the signature.

The RecipientCert property must be filled out with a valid public key Certificate type object. To set a certificate, you may set the Encoded field to the encoded certificate. To select a certificate, use the Store and Subject fields.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

RemoteHost Property (OFTPClient Component)

The domain name or IP address of the OFTP server.

Syntax

property RemoteHost: String read get_RemoteHost write set_RemoteHost;

Default Value

''

Remarks

The RemoteHost property specifies the IP address (IP number in dotted internet format) or Domain Name of the OFTP server. It is set before a connection is attempted and cannot be changed once a connection is in progress.

If the RemoteHost property is set to a Domain Name, a DNS request is initiated and upon successful termination of the request, the RemoteHost property is set to the corresponding address. If the search is not successful, an error is returned.

If the component is configured to use a SOCKS firewall, the value assigned to this property may be preceded with an "*". If this is the case, the host name is passed to the firewall unresolved and the firewall performs the DNS resolution.

RemotePort Property (OFTPClient Component)

The port for the OFTP service (default is 3305).

Syntax

property RemotePort: Integer read get_RemotePort write set_RemotePort;

Default Value

3305

Remarks

A valid port number (a value between 1 and 65535) is required for the connection to take place. The property must be set before a connection is attempted and cannot be changed once a connection is established. Any attempt to change this property while connected will fail with an error.

When UseSSL is set to True this property will be set to 6619.

This property is not available at design time.

SecureAuthentication Property (OFTPClient Component)

Whether or not the component should perform secure Odette authentication.

Syntax

property SecureAuthentication: Boolean read get_SecureAuthentication write set_SecureAuthentication;

Default Value

false

Remarks

If true, the component will perform secure authentication when connecting to the server. The secure authentication consists of encrypting and decrypting data sent to and from the server, and verifying that this occurred successfully. Secure authentication may be performed in plaintext or SSL mode.

Both Certificate and RecipientCert properties must be populated when this property is set to true.

This is only valid for version 2.0 of the protocol.

This property is not available at design time.

ServerPassword Property (OFTPClient Component)

The server's password.

Syntax

property ServerPassword: String read get_ServerPassword write set_ServerPassword;

Default Value

''

Remarks

The password assigned to the server in the bilateral agreement. This property must be a string of no more than 8 characters long.

ServerSFIDCode Property (OFTPClient Component)

Server's SFID code.

Syntax

property ServerSFIDCode: String read get_ServerSFIDCode write set_ServerSFIDCode;

Default Value

''

Remarks

The SFID code identifies the origin or destination party that is sending or receiving a file, while the SSID code identifies the party that a session is established with. If the SFID and SSID codes do not match, then the party the session is established with is acting as an intermediary, and the party identified by the SFID code is either the origin or final destination.

When acting as an intermediary the component will not perform any security services (i.e. sign, verify, encrypt, decrypt). Security services are to be performed by the origin or destination only. Data should simply be passed along by an intermediary.

ServerSSIDCode Property (OFTPClient Component)

The server's SSID code.

Syntax

property ServerSSIDCode: String read get_ServerSSIDCode write set_ServerSSIDCode;

Default Value

''

Remarks

The identification code of the server. This code may be less than, but no more than 25 characters long. Generally, SSID codes have the following format as specified in RFC 2204 that is based on ISO 6523:

SignedReceipt Property (OFTPClient Component)

Whether or not to require signed receipts.

Syntax

property SignedReceipt: Boolean read get_SignedReceipt write set_SignedReceipt;

Default Value

false

Remarks

When sending a file to a trading partner, set this to true if the file receipt should be signed by the server. When this receipt is received by the component, it will be verified during processing.

NOTE: If the server does not attach the public certificate in the signed message, the server's public key must be specified in the RecipientCert property in order for verification to succeed.

This property is not available at design time.

SSLAcceptServerCert Property (OFTPClient Component)

Instructs the component to unconditionally accept the server certificate that matches the supplied certificate.

Syntax

property SSLAcceptServerCert: TibeCertificate read get_SSLAcceptServerCert write set_SSLAcceptServerCert;

Remarks

If it finds any issues with the certificate presented by the server, the component will normally terminate the connection with an error.

You may override this behavior by supplying a value for SSLAcceptServerCert. If the certificate supplied in SSLAcceptServerCert is the same as the certificate presented by the server, then the server certificate is accepted unconditionally, and the connection will continue normally.

Note: This functionality is provided only for cases in which you otherwise know that you are communicating with the right server. If used improperly, this property may create a security breach. Use it at your own risk.

Please refer to the Certificate type for a complete list of fields.

SSLCert Property (OFTPClient Component)

The certificate to be used during Secure Sockets Layer (SSL) negotiation.

Syntax

property SSLCert: TibeCertificate read get_SSLCert write set_SSLCert;

Remarks

This property includes the digital certificate that the component will use during SSL negotiation. Set this property to a valid certificate before starting SSL negotiation. To set a certificate, you may set the Encoded field to the encoded certificate. To select a certificate, use the store and subject fields.

Please refer to the Certificate type for a complete list of fields.

Timeout Property (OFTPClient Component)

This property includes the timeout for the component.

Syntax

property Timeout: Integer read get_Timeout write set_Timeout;

Default Value

60

Remarks

If the Timeout property is set to 0, all operations return immediately, potentially failing with a WOULDBLOCK error if data cannot be sent immediately.

If Timeout is set to a positive value, data is sent in a blocking manner and the component will wait for the operation to complete before returning control. The component will handle any potential WOULDBLOCK errors internally and automatically retry the operation for a maximum of Timeout seconds.

The component will use DoEvents to enter an efficient wait loop during any potential waiting period, making sure that all system events are processed immediately as they arrive. This ensures that the host application does not freeze and remains responsive.

If Timeout expires, and the operation is not yet complete, the component raises an exception.

Note: By default, all timeouts are inactivity timeouts, that is, the timeout period is extended by Timeout seconds when any amount of data is successfully sent or received.

The default value for the Timeout property is 60 seconds.

TrustedCerts Property (OFTPClient Component)

A collection of trusted CA certificates.

Syntax

property TrustedCerts: TibeCertificateList read get_TrustedCerts write set_TrustedCerts;

Remarks

If this collection is populated the component will validate any certificates that are loaded against the CA certificates specified here.

If this collection is not populated no validation will occur. Certificates are imported into this collection by calling the ImportTrustedCerts method.

See also FailOnUntrustedCert and TrustedCertsData.

This property is not available at design time.

Please refer to the Certificate type for a complete list of fields.

UseSSL Property (OFTPClient Component)

Use SSL to access the RemoteHost .

Syntax

property UseSSL: Boolean read get_UseSSL write set_UseSSL;

Default Value

false

Remarks

Use this property to determine whether the component uses SSL to connect with the RemoteHost.

This property is only valid when using version 2.0 of the protocol.

Note: Setting this property to True will set RemotePort to 6619.

This property is not available at design time.

Version Property (OFTPClient Component)

Which version of the OFTP protocol the component is using.

Syntax

property Version: TibeTOFTPVersions read get_Version write set_Version;

TibeTOFTPVersions = (
  oftpVer12,
  oftpVer13,
  oftpVer14,
  oftpVer20
);

Default Value

oftpVer20

Remarks

This property specifies which version of the OFTP protocol to use. Possible values are:

The default value is oftpVer20 (Version 2.0).

Note: Version 2.0 (oftpVer20) of the protocol must be used when using security functions. The following properties are only applicable when using Version 2.0:

• UseSSL
• SecureAuthentication
• VirtualFileSecurityLevel
• Compress

VirtualFileDate Property (OFTPClient Component)

The date/time stamp for the virtual file.

Syntax

property VirtualFileDate: String read get_VirtualFileDate write set_VirtualFileDate;

Default Value

''

Remarks

Set this to the date/time stamp for the virtual file before sending. If this is not set when sending a file, the current date/time will be used. This property will accept various date formats, but will return the following format only: "MM/dd/yyyy HH:mm:ss".

Supported date formats:

• ddd, d MMM yy HH:mm:ss zzz
• ddd, d MMM yyyy HH:mm:ss zzz
• d MMM yy HH:mm:ss zzz
• d MMM yyyy HH:mm:ss zzz
• dd-MMM-yyyy HH:mm:ss
• ddd, d MMM yy HH:mm:ss zz
• ddd, d MMM yyyy HH:mm:ss zz
• ddd, d MMM yy HH:mm:ss zzz
• ddd, d MMM yyyy HH:mm:ss zzz
• ddd, d MMM yy HH:mm:ss z
• ddd, d MMM yyyy HH:mm:ss z
• ddd, dd MMM yyyy HH:mm:ss 'GMT'
• dddd, MMMM dd, yyyy h:mm:ss tt
• dddd, MMMM dd yyyy h:mm tt
• yyMMddHHmmssZ
• yyyyMMddHHmmssZ
• yyMMddHHmmsszzzz
• yyyyMMddHHmmsszzzz
• yyyyMMddHHmmssffff
• MM/dd/yyyy HH:mm:ss

VirtualFileFormat Property (OFTPClient Component)

The structure of the outgoing file.

Syntax

property VirtualFileFormat: TibeVirtualFileFormats read get_VirtualFileFormat write set_VirtualFileFormat;

TibeVirtualFileFormats = (
  ffUnstructured,
  ffText,
  ffFixed,
  ffVariable
);

Default Value

ffUnstructured

Remarks

The following values are valid file formats for outgoing virtual files:

Note: When either VirtualFileSecurityLevel has been set to a value other than slNone or Compress has been set to true, all files become ffUnstructured except ffVariable files.

This property is not available at design time.

VirtualFileSecurityLevel Property (OFTPClient Component)

The level of security for the file.

Syntax

property VirtualFileSecurityLevel: TibeVirtualFileSecurityLevels read get_VirtualFileSecurityLevel write set_VirtualFileSecurityLevel;

TibeVirtualFileSecurityLevels = (
  slNone,
  slEncrypted,
  slSigned,
  slEncryptedAndSigned
);

Default Value

slNone

Remarks

When sending files, set this value to the level of security for the next virtual file to send. After receiving a file, this will be set to the level of security of the last file received.

When encrypting a file, RecipientCert must be set, and when signing a file, the Certificate must be set.

The file will be processed to a temporary file before being sent.

This is only valid for version 2.0 of the protocol.

This property is not available at design time.

ChangeDirection Method (OFTPClient Component)

Sends a Change Direction (CD) command.

Syntax

procedure ChangeDirection();

Remarks

This method sends a Change Direction (CD) command to the remote host when called. In normal operation this should not be used. This should only be used if a condition arises where you must manually change the speaker when communicating with the remote host.

Config Method (OFTPClient Component)

Sets or retrieves a configuration setting.

Syntax

function Config(ConfigurationString: String): String;

Remarks

Config is a generic method available in every component. It is used to set and retrieve configuration settings for the component.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

Connect Method (OFTPClient Component)

This method connects to the FTP server without logging in.

Syntax

procedure Connect();

Remarks

This method establishes a connection with the RemoteHost but does not log in. In most cases, it is recommended to use the Logon method, which will both establish a connection and log in to the server.

This method may be useful in cases in which it is desirable to separate the connection and logon operations, for instance, confirming that a host is available by first creating the connection.

Disconnect Method (OFTPClient Component)

This method disconnects from the server without first logging off.

Syntax

procedure Disconnect();

Remarks

This method immediately disconnects from the server without first logging off.

In most cases, the Logoff method should be used to log off and disconnect from the server. Call the Disconnect method in cases in which it is desirable to immediately disconnect without first logging off.

DoEvents Method (OFTPClient Component)

This method processes events from the internal message queue.

Syntax

procedure DoEvents();

Remarks

When DoEvents is called, the component processes any available events. If no events are available, it waits for a preset period of time, and then returns.

ExchangeCertificate Method (OFTPClient Component)

Exchange a certificate with the remote host.

Syntax

procedure ExchangeCertificate(CertificateStore: String; CertificateExchangeType: Integer);

Remarks

If the remote host supports the certificate exchange feature of OFTP 2.0 this method may be used to send and/or request certificates.

The CertificateStore parameter specifies the location of the certificate to be exchanged. In most cases this will be the path to a .cer file on disk. If the certificate is in another format or is installed to the Windows certificate store please see ExchangeCertStoreType and ExchangeCertSubject for more information.

The CertificateExchangeType parameter determines the type of request. Possible values are:

When the remote host sends a certificate to the component the received certificate will be provided through the CertificateReceived event.

ImportTrustedCerts Method (OFTPClient Component)

Imports a list of trusted CA certificates.

Syntax

procedure ImportTrustedCerts();

Remarks

When ImportTrustedCerts is called the component will import the CA certificates from the source specified by TrustedCertsData into the TrustedCerts collection.

The component will then validate the trust of certificates when they are loaded.

If trusted CA certificates are not imported no validation will occur (default).

See also FailOnUntrustedCert.

Interrupt Method (OFTPClient Component)

This method interrupts the current action.

Syntax

procedure Interrupt();

Remarks

This method interrupts the current action. If you use SendFile to upload a file, the component will run synchronously until the upload is completed. This method will allow you to stop the file from uploading without disconnecting from the host.

Logoff Method (OFTPClient Component)

Logoff from the OFTP server.

Syntax

procedure Logoff();

Remarks

Logoff from the OFTP server. If that fails, the connection is terminated by the local host.

Logon Method (OFTPClient Component)

Logon to the OFTP RemoteHost using the current client credentials.

Syntax

procedure Logon();

Remarks

Logon to the OFTP server using the current ClientSSIDCode, ClientSFIDCode, and ClientPassword. The component will also check the corresponding server credentials, ServerSSIDCode, ServerSFIDCode, and ServerPassword.

ReceiveFiles Method (OFTPClient Component)

Receive any files queued to be sent from the server.

Syntax

procedure ReceiveFiles();

Remarks

This method connects to the server, and receives any files the server has in its outgoing queue to this particular partner. The files are downloaded to the directory specified by the DownloadDirectory property.

Reset Method (OFTPClient Component)

Resets the state of the control.

Syntax

procedure Reset();

Remarks

Reset resets the state of the component. All properties will be set to their default values.

SendEndResponse Method (OFTPClient Component)

Sends an EERP/NERP asynchronously.

Syntax

procedure SendEndResponse(VirtualFileName: String; VirtualFileDate: String; Destination: String; Originator: String; Creator: String; ReasonCode: Integer; ReasonText: String; FileHash: String; Signature: String);

Remarks

This method sends an EERP/NERP. By default the component will automatically respond with an EERP/NERP when receiving a file. To respond asynchronously instead this method may be used.

To respond asynchronously first set the SendEndResponse parameter of the EndTransfer event to False. This instructs the component to not send a response automatically. Within the EndTransfer event you must also save the values that are required parameters for this method. This includes FileHash, VirtualFileDate, and VirtualFileName. Note: VirtualFileDateFormat must be set to a format that includes the necessary level of accuracy.

Destination should be set to the SFID of the remote host.

Originator should be set to the SFID of the local system. In the case that the component is being used as part of a gateway process to forward traffic to another OFTP host this may be set to the SFID of that host instead.

Creator should be set to the SFID of the local system.

Signature is only applicable if the application is acting as a routing application. In all other cases this should be set to empty string. In the case where the application is acting as a routing application the end response is being forwarded to another entity for processing. The Signature should be set to the value received in the EndResponse event (if populated).

ReasonCode and ReasonText are used to specify error information. If ReasonCode is set to 0 the component will send an EERP. If ReasonCode is set to any non-zero value the component will send a NERP. Common values are:

SendFile Method (OFTPClient Component)

Send the specified file to the server.

Syntax

procedure SendFile(LocalFile: String; VirtualFileName: String);

Remarks

This method connects to the server, and uploads the specified file to the server. The LocalFile parameter contains the path and name of the file to send to the server. The VirtualFileName parameter contains the virtual file name of the file being sent. If this parameter is left as an empty string, the component will use the filename contained in the LocalFile parameter by default.

Note: When SetUploadStream has been called with a valid input stream, the data will be uploaded from there instead of the LocalFile.

ValidateCert Method (OFTPClient Component)

Validates the certificate with private key.

Syntax

function ValidateCert(): Boolean;

Remarks

This method optionally validates the certificate specified by Certificate. It is not required to validate the certificate from a technical perspective, but may be desired to ensure the recipient's certificate is valid and issued by a trusted authority.

Before calling this method call ImportTrustedCerts to load the trusted certification information.

When this method is called the component:

• Validates the certificate has not expired
• Validates the certificate was issued by a CA in the TrustedCerts collection. If the certificate is self-signed this step is skipped.
• Validates the certificate has not been revoked. Note that the revocation check will only make use of the CRL distribution point identified in the certificate's extension. If the certificate does not contain a CRL distribution point extension this step is skipped.

ValidateRecipientCert Method (OFTPClient Component)

Validates the recipient certificate.

Syntax

function ValidateRecipientCert(): Boolean;

Remarks

This method optionally validates the certificate specified by RecipientCert. It is not required to validate the certificate from a technical perspective, but may be desired to ensure the recipient's certificate is valid and issued by a trusted authority.

Before calling this method call ImportTrustedCerts to load the trusted certification information.

When this method is called the component:

• Validates the certificate has not expired
• Validates the certificate was issued by a CA in the TrustedCerts collection. If the certificate is self-signed this step is skipped.
• Validates the certificate has not been revoked. Note that the revocation check will only make use of the CRL distribution point identified in the certificate's extension. If the certificate does not contain a CRL distribution point extension this step is skipped.

AcceptFile Event (OFTPClient Component)

Fired when the client receives a file.

Syntax

type TAcceptFileEvent = procedure (
  Sender: TObject;
  const VirtualFileName: String;
  const VirtualFileDate: String;
  const Destination: String;
  const Originator: String;
  var Accept: Boolean;
  var FileName: String;
  var Overwrite: Boolean;
  var ErrorCode: Integer;
  var ErrorDescription: String
) of Object;

property OnAcceptFile: TAcceptFileEvent read FOnAcceptFile write FOnAcceptFile;

Remarks

This event controls the behavior when the client receives a file.

VirtualFileName holds the name of the file being received.

VirtualFileDate holds the date associated with the file in the format specified by VirtualFileDateFormat. The default value is "MM/dd/yyyy HH:mm:ss".

Destination identifies the receiver (SFID) code in the send file request. If the file was intended for this server this will match the value in ServerSFIDCode

Originator identifies the sender (SFID) code in the send file request.

Accept is true by default, and must be set to False in order to reject the file.

Filename will be populated with the full path and filename that will be written. It may be changed within this event to specify a new location. The Filename is determined by combining the path specified in DownloadDirectory and the name received from the client.

Overwrite is false by default, but may be set to true to overwrite existing files on disk.

ErrorCode controls the error returned to the client when Accept is set to False. If this is not set the component will use a value of 99 to indicate a general error.

ErrorDescription may also be set to include an error message. If this is not set the component will automatically include an error message based on the ErrorCode specified. Common error codes and their corresponding error messages are listed below.

CertificateReceived Event (OFTPClient Component)

Fired when a certificate is received from the remote host.

Syntax

type TCertificateReceivedEvent = procedure (
  Sender: TObject;
  const CertificateFileName: String;
  CertificateExchangeType: Integer
) of Object;

property OnCertificateReceived: TCertificateReceivedEvent read FOnCertificateReceived write FOnCertificateReceived;

Remarks

This event provides information about the certificate file that was sent by the remote host.

When the remote host sends a certificate using the Certificate Exchange feature of OFTP 2.0, this event provides information about it. The certificate file will be written to the DownloadDirectory. After the file is written to DownloadDirectory this event will fire.

The CertificateFilemame parameter holds the filename of the received certificate.

The CertificateExchangeType parameter identifies the type of request associated with the certificate. Possible values are:

EndResponse Event (OFTPClient Component)

Fired every time an end response is received from the server.

Syntax

type TEndResponseEvent = procedure (
  Sender: TObject;
  const VirtualFileName: String;
  const VirtualFileDate: String;
  const Destination: String;
  const Originator: String;
  const Creator: String;
  ReasonCode: Integer;
  const ReasonText: String;
  var FileHash: String;
  const Signature: String;
  Direction: Integer
) of Object;

property OnEndResponse: TEndResponseEvent read FOnEndResponse write FOnEndResponse;

Remarks

This event contains information received from an either an End-To-End Response or a Negative End Response received from the server.

An End-To-End Response will not contain values for the ReasonCode, ReasonText, or Creator parameters.

VirtualFileName specifies the name of the file.

VirtualFileDate holds the VirtualFileDate value in the format specified by VirtualFileDateFormat. The default value is "MM/dd/yyyy HH:mm:ss".

Destination is the SFID of the destination system (this component).

Originator identifies the system that originated the end response. This is typically the same as Creator and holds the remote system's SFID.

Creator is the SFID of the remote system.

Direction specifies whether the end response is being received or sent. Possible values are:

By default the component will only fire this event for received end responses. To configure the component to fire the event for both send and received end responses set FireEndResponseOnSend to True.

FileHash is populated if the OFTP Version is 2.0 and a signed receipt was originally requested. FileHash may also be specified with the expected value in the case where an asynchronous EndResponse is received. The expected value may be obtained from the EndTransfer event when initially sending the file.

Signature is only applicable when the OFTP version is 2.0 and the application is acting as a routing application where the end response will be forwarded on to another entity. In this case Signature will be populated if the end response is signed. This should be stored and supplied when forwarding the response with the SendEndResponse method.

ReasonCode and ReasonText identify the error if a Negative End Response (NERP) was received. A value of 0 indicates there was no an error and the response is an End-To-End Response (EERP). Common values are:

EndTransfer Event (OFTPClient Component)

Fired when a file finishes transferring.

Syntax

type TEndTransferEvent = procedure (
  Sender: TObject;
  Direction: Integer;
  const LocalFile: String;
  const VirtualFileName: String;
  const VirtualFileDate: String;
  const Destination: String;
  const Originator: String;
  ReasonCode: Integer;
  const ReasonText: String;
  FileSize: Int64;
  const FileHash: String;
  var SendEndResponse: Boolean
) of Object;

property OnEndTransfer: TEndTransferEvent read FOnEndTransfer write FOnEndTransfer;

Remarks

The EndTransfer event is fired when a file is sent or received by the component.

The FileSize parameter gives the size of the file that was sent or received.

The Direction parameter shows whether the client or the server is sending the data.

VirtualFileName holds the filename.

VirtualFileDate holds the date associated with the file in the format specified by VirtualFileDateFormat. The default value is "MM/dd/yyyy HH:mm:ss".

Originator identifies the sender (SFID) code in the send file request.

Destination identifies the receiver (SFID) code in the send file request.

SendEndResponse indicates whether the EERP/NERP for this request should be sent synchronously or asynchronously. When this parameter is True (default) the component will automatically respond with an EERP/NERP synchronously. To respond asynchronously set this parameter to False. You may then use the SendEndResponse method to send the response at a later time. See SendEndResponse for more details. Note: VirtualFileDateFormat must be set to a format that includes the necessary level of accuracy.

FileHash holds the hash of the file being transmitted. This is only applicable when the OFTP version is 2.0 and the sender requested a signed receipt. When receiving files this value should be saved if you wish to respond asynchronously using SendEndResponse. See SendEndResponse for more details.

LocalFile holds the full path to the file that will be written.

ReasonCode and ReasonText identify the error if a Negative End Response (NERP) was received. A value of 0 indicates there was no an error and the response is an End-To-End Response (EERP). Common values are:

Error Event (OFTPClient Component)

Fired when information is available about errors during data delivery.

Syntax

type TErrorEvent = procedure (
  Sender: TObject;
  ErrorCode: Integer;
  const Description: String
) of Object;

property OnError: TErrorEvent read FOnError write FOnError;

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the component raises an exception.

The ErrorCode parameter contains an error code, and the Description parameter contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

Log Event (OFTPClient Component)

Fires once for each log message.

Syntax

type TLogEvent = procedure (
  Sender: TObject;
  LogLevel: Integer;
  const Message: String;
  const LogType: String
) of Object;

property OnLog: TLogEvent read FOnLog write FOnLog;

Remarks

This event fires once for each log message generated by the component. The verbosity is controlled by the LogLevel setting.

LogLevel indicates the level of message. Possible values are:

Message is the log entry.

LogType identifies the type of log entry. Possible values are:

• "Info"
• "OFTP"

PITrail Event (OFTPClient Component)

Fired when any protocol level communication occurs.

Syntax

type TPITrailEvent = procedure (
  Sender: TObject;
  Direction: Integer;
  const Data: String;
  const DataB: TBytes;
  CommandId: Integer;
  const CommandDescription: String
) of Object;

property OnPITrail: TPITrailEvent read FOnPITrail write FOnPITrail;

Remarks

This event provides information about the protocol level communication between the client and server.

The Direction parameter specifies who sent the command.

The CommandId and CommandDescription parameters specify which command was sent. The table below shows possible values.

The Data parameter contains the raw OFTP packet.

SSLServerAuthentication Event (OFTPClient Component)

Fired after the server presents its certificate to the client.

Syntax

type TSSLServerAuthenticationEvent = procedure (
  Sender: TObject;
  const CertEncoded: String;
  const CertEncodedB: TBytes;
  const CertSubject: String;
  const CertIssuer: String;
  const Status: String;
  var Accept: Boolean
) of Object;

property OnSSLServerAuthentication: TSSLServerAuthenticationEvent read FOnSSLServerAuthentication write FOnSSLServerAuthentication;

Remarks

During this event, the client can decide whether or not to continue with the connection process. The Accept parameter is a recommendation on whether to continue or close the connection. This is just a suggestion: application software must use its own logic to determine whether or not to continue.

When Accept is False, Status shows why the verification failed (otherwise, Status contains the string OK). If it is decided to continue, you can override and accept the certificate by setting the Accept parameter to True.

SSLStatus Event (OFTPClient Component)

Fired when secure connection progress messages are available.

Syntax

type TSSLStatusEvent = procedure (
  Sender: TObject;
  const Message: String
) of Object;

property OnSSLStatus: TSSLStatusEvent read FOnSSLStatus write FOnSSLStatus;

Remarks

The event is fired for informational and logging purposes only. This event tracks the progress of the connection.

StartTransfer Event (OFTPClient Component)

Fired when a document starts transferring.

Syntax

type TStartTransferEvent = procedure (
  Sender: TObject;
  Direction: Integer;
  var LocalFile: String;
  const VirtualFileName: String;
  const VirtualFileDate: String;
  const Destination: String;
  const Originator: String
) of Object;

property OnStartTransfer: TStartTransferEvent read FOnStartTransfer write FOnStartTransfer;

Remarks

This event fires when a file transfer begins.

Direction specifies if the client or server sent the file.

VirtualFileName holds the filename.

VirtualFileDate holds the date associated with the file in the format "MM/dd/yyyy HH:mm:ss".

Originator identifies the sender (SFID) code in the send file request.

Destination identifies the receiver (SFID) code in the send file request.

LocalFile holds the full path to the file that will be written.

Transfer Event (OFTPClient Component)

Fired while a document transfers (delivers document).

Syntax

type TTransferEvent = procedure (
  Sender: TObject;
  Direction: Integer;
  const LocalFile: String;
  const VirtualFileName: String;
  const VirtualFileDate: String;
  const Destination: String;
  const Originator: String;
  BytesTransferred: Int64;
  const Text: String;
  const TextB: TBytes
) of Object;

property OnTransfer: TTransferEvent read FOnTransfer write FOnTransfer;

Remarks

The Text parameter contains the portion of the document text being retrieved. It is empty if data is being posted to the server.

The BytesTransferred parameter contains the number of bytes transferred in this Direction since the beginning of the document text.

The Direction parameter shows whether the client (0) or the server (1) is sending the data.

VirtualFileName holds the filename.

VirtualFileDate holds the date associated with the file in the format specified by VirtualFileDateFormat. The default value is "MM/dd/yyyy HH:mm:ss".

Originator identifies the sender (SFID) code in the send file request.

Destination identifies the receiver (SFID) code in the send file request.

LocalFile holds the full path to the file that will be written.

Certificate Type

This is the digital certificate being used.

Remarks

This type describes the current digital certificate. The certificate may be a public or private key. The fields are used to identify or select certificates.

Fields

Constructors

>

constructor Create();

>

constructor Create(valEncoded: TBytes);

>

constructor Create(valStoreType: TibeCertStoreTypes; valStore: String; valStorePassword: String; valSubject: String);

>

constructor Create(valStoreType: TibeCertStoreTypes; valStore: TBytes; valStorePassword: String; valSubject: String);

Firewall Type

The firewall the component will connect through.

Remarks

When connecting through a firewall, this type is used to specify different properties of the firewall, such as the firewall Host and the FirewallType.

Fields

Constructors

constructor Create();

Config Settings (OFTPClient Component)

The component accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, access to these internal properties is provided through the Config method.

OFTPClient Config Settings

Base Config Settings

Trappable Errors (OFTPClient Component)

OFTPClient Errors

TCPClient Errors

TCP/IP Errors