AS1Receiver Class

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The AS1Receiver class is used to process AS1 messages and generate receipts.

Syntax

ipworksedi.As1receiver

Remarks

The AS1Receiver class allows you to receive AS1 messages as specified in RFC 3335. The class can act as an email client, decrypt and verify incoming messages, generate receipts including Message Disposition Notifications (MDNs), and send them over SMTP/S.

Basic Operation

You should first log in to your mail server by setting MailServer, User, and Password, and invoking Connect. You may then navigate your mail inbox by setting MailMessageNumber, and inspecting properties such as MailMessageFrom, etc. When you find the desired file you may download it by invoking ReadRequest. Alternatively, you may acquire the AS1 data by other means and directly set Request and RequestHeaders.

ReadRequest (or ParseHeaders) will determine information such as From and SendTo, which will allow you to set the appropriate certificates. You may specify your certificate with the Certificate property, and your trading partner's (signing) certificate with the SignerCert property.

Then, invoke ProcessRequest to process the request and generate the MDN receipt as specified in RFC 3335. If the request was processed successfully, EDIData will contain the transmitted EDI data. If a problem occurred, EDIData will not be populated and an exception will be thrown. In either case MDNReceipt will contain the RFC-compliant receipt, which should be returned to the client.

The MDNReceipt may be returned over SMTP/S by invoking SendResponse. In case the server address for incoming mail is different than that for outgoing mail you should use Config to configure this.

To create log files, set LogDirectory prior to invoking ProcessRequest. This will log all incoming and outgoing data, and will also write the received EDI files to disk.

Example AS1Receiver1.User = "myusername" AS1Receiver1.Password = "mypassword" AS1Receiver1.MailServer = "1.2.3.4" AS1Receiver1.Connect() // You may need to search the server for received files at this point AS1Receiver1.MessageNumber = 1; // You may check properties such as MailMessageFrom, etc. AS1Receiver1.ReadRequest() AS1Receiver1.Certificate = new Certificate(CertStoreTypes.cstPFXFile, "\\my_server_directory\\my_pfx_file.pfx", "my password", "CN=Me"); AS1Receiver1.SignerCert = (base 64 encoded certificate); AS1Receiver1.LogDirectory = "c:\\my_server_directory\\my_log_directory"; AS1Receiver1.ProcessRequest(); AS1Receiver1.SendResponse(); AS1Receiver1.Disconnect(); Additional functionality allows the user to examine details of the client's request, to permit certain types of errors, or to customize the outgoing MDN. See the property and method list for details.

Property List

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

Method List

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

Event List

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

Config Settings

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

Attachments Property (AS1Receiver Class)

Collection of files attached to the current message.

Syntax

public EDIAttachmentList getAttachments();

Remarks

When a message is received, the class will write all of the files attached to the EDIData into temp files. These attachments can be retrieved by walking this collection and retrieving their file names.

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

Certificate Property (AS1Receiver Class)

The decryption and receipt signing certificate.

Syntax

public Certificate getCertificate();


public void setCertificate(Certificate certificate);

Remarks

The digital certificate that the class will use to decrypt incoming transmissions and sign the MDN receipt (if requested). If a different certificate is required for decryption than for MDN signing, set the decryption certificate before calling ParseRequest, then set the signing certificate before calling CreateMDNReceipt. Certificate must be set to a private key certificate.

CompressionFormat Property (AS1Receiver Class)

The compression format used on the incoming message.

Syntax

public int getCompressionFormat();



Enumerated values:
  public final static int cfNone = 0;
  public final static int cfZLIB = 1;

Default Value

0

Remarks

The compression format used on the incoming message, if any. Compressed messages will automatically be decompressed by the class.

This property is read-only.

Connected Property (AS1Receiver Class)

This shows whether the class is connected.

Syntax

public boolean isConnected();


public void setConnected(boolean connected);

Default Value

False

Remarks

This property is used to determine whether or not the class is connected to the remote host.

Note: It is recommended to use the Connect or Disconnect method instead of setting this property.

This property is not available at design time.

EDIData Property (AS1Receiver Class)

The EDI data sent in Request .

Syntax

public EDIData getEDIData();

Remarks

This property will only be populated if ParseRequest or ProcessRequest finishes without an error, setting ScanResult to 0. If so, EDIData will contain the processed EDI message.

This property is read-only.

Firewall Property (AS1Receiver Class)

A set of properties related to firewall access.

Syntax

public Firewall getFirewall();


public void setFirewall(Firewall firewall);

Remarks

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

From Property (AS1Receiver Class)

The sender of the original message.

Syntax

public String getFrom();


public void setFrom(String from);

Default Value

""

Remarks

The sender of the original message. The recipient is given by SendTo.

Note that From and SendTo correspond to the sender and recipient of the original message. For MDNs the roles are reversed, so that From indicates the recipient, and SendTo indicates the sender of the MDN.

LocalHost Property (AS1Receiver Class)

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

Syntax

public String getLocalHost();


public void setLocalHost(String localHost);

Default Value

""

Remarks

The LocalHost 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 multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the class initiate connections (or accept in the case of server classs) only through that interface.

If the class 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 multi-homed 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.

LogDirectory Property (AS1Receiver Class)

The path to a directory for logging.

Syntax

public String getLogDirectory();


public void setLogDirectory(String logDirectory);

Default Value

""

Remarks

Setting LogDirectory will instruct the component to log the details of each transmission to unique files in the specified directory. For each request processed, the class will log the original EDI data, the complete text of the outgoing request and the incoming response.

The class will write a file for each transmission, with extension ".log". In case of error an additional file will be written with extension ".err", and the error will be reported in both files. Raw AS1 messages created or downloaded by the class will be written with extension ".as1", and MDNs created or downloaded will be written with extension ".as1-mdn".

The filenames will be chosen automatically by the class. Each filename will be the system time, in the format YYYY-MM-DD-HH-MM-SS-MMMM, with extensions "-2", "-3", used in case files of those names already exist. After each transaction is processed LogFile will contain the name of the files just written, minus the extension ".log" or ".err".

If logs cannot be written an exception will be thrown.

LogFile Property (AS1Receiver Class)

The log file written.

Syntax

public String getLogFile();

Default Value

""

Remarks

In case LogDirectory is specified two log files will be written in the specified directory and LogFile will contain the path.

LogFile will in fact refer to several files with appropriate extensions. A diagnostic log will be written with filename LogFile + ".log", and any EDI data read will be written with filename LogFile + ".dat". Raw AS1 messages and MDNs will also be written with extensions ".as1" and ".as1-mdn".

This property is read-only.

MailMessageCc Property (AS1Receiver Class)

The value of the Cc header of the mail message.

Syntax

public String getMailMessageCc();

Default Value

""

Remarks

After calling SelectMailMessage this property will be populated with the value of the Cc header of the mail message.

This property is read-only.

MailMessageCount Property (AS1Receiver Class)

The number of messages waiting in the mailbox.

Syntax

public int getMailMessageCount();

Default Value

0

Remarks

When the class is not connected to the mail server, the value of the MailMessageCount property is 0. When connected, it contains the number of messages in the mailbox. You may set MailMessageNumber to any value between 1 and MailMessageCount to inspect a given message.

This property is read-only.

MailMessageDate Property (AS1Receiver Class)

The message date for the currently selected message.

Syntax

public String getMailMessageDate();

Default Value

""

Remarks

The date will be formatted like the following example:

Wed, 29 Dec 2004 11:58:02 +0700

This property is read-only.

MailMessageFrom Property (AS1Receiver Class)

The sender of the mail message.

Syntax

public String getMailMessageFrom();

Default Value

""

Remarks

After calling SelectMailMessage this property will be populated. When processing AS1 transmissions, this will correspond to From. When processing MDNs, this will correspond to SendTo.

This property is read-only.

MailMessageHeaders Property (AS1Receiver Class)

The message headers for the currently selected message.

Syntax

public String getMailMessageHeaders();

Default Value

""

Remarks

After calling SelectMailMessage this property will contain the full headers of the mail message as reported by the mail server.

This property is read-only.

MailMessageNumber Property (AS1Receiver Class)

The message number on the incoming mail server.

Syntax

public int getMailMessageNumber();


public void setMailMessageNumber(int mailMessageNumber);

Default Value

0

Remarks

MailMessageNumber specifies a number between 1 and MailMessageCount, and serves as a message pointer to an incoming mail message.

Set this property before calling SelectMailMessage

This property is not available at design time.

MailMessageReplyTo Property (AS1Receiver Class)

The value of the ReplyTo header of the mail message.

Syntax

public String getMailMessageReplyTo();

Default Value

""

Remarks

After calling SelectMailMessage this property will be populated with the value of the ReplyTo header of the mail message.

This property is read-only.

MailMessageSize Property (AS1Receiver Class)

The size of the mail message.

Syntax

public int getMailMessageSize();

Default Value

0

Remarks

After calling QueryMessageSize this property will be populated with the the size of the mail message.

Note: It is recommended to use the QueryMessageSize method instead of getting this property.

This property is read-only.

MailMessageSubject Property (AS1Receiver Class)

The subject of the mail message.

Syntax

public String getMailMessageSubject();

Default Value

""

Remarks

After calling SelectMailMessage this property will be populated with the subject of the mail message.

This property is read-only.

MailMessageText Property (AS1Receiver Class)

The text of the mail message.

Syntax

public String getMailMessageText();

Default Value

""

Remarks

The text of the mail message identified by MailMessageNumber, if it has been downloaded from the server. To read the message, invoke ReadRequest (receiver) or ReadReceipt (sender). In case the message is not as AS1 message this will throw an exception, but you may catch it and then read the value of MailMessageText.

This property is read-only.

MailMessageTo Property (AS1Receiver Class)

The recipient of the mail message.

Syntax

public String getMailMessageTo();

Default Value

""

Remarks

After calling SelectMailMessage this property will be populated with the recipient of the mail message.

This property is read-only.

MailMessageUID Property (AS1Receiver Class)

The unique id of the mail message.

Syntax

public String getMailMessageUID();

Default Value

""

Remarks

After calling QueryMessageUID this property will be populated with the unique id of the mail message.

Note: It is recommended to use the QueryMessageUID method instead of getting this property.

This property is read-only.

MailServer Property (AS1Receiver Class)

The address of your mail server.

Syntax

public String getMailServer();


public void setMailServer(String mailServer);

Default Value

""

Remarks

The address of your mail server. By default, the class will send outgoing mail via SMTP, and receive incoming mail via POP. Moreover, the class will assume that both servers are located at the address specified by MailServer.

In case you use different addresses for incoming and outgoing mail you should set the POPServer and SMTPServer configuration settings appropriately. You may also set POPPort and SMTPPort in case you use nonstandard ports.

To configure SSL you should set SSLStartMode. Note that if SSL is used for sending but not receiving, or vice versa, you should set SSLStartMode each time you send or receive a file.

MDNReceipt Property (AS1Receiver Class)

The MDN-based receipt generated by the class.

Syntax

public MDNReceipt getMDNReceipt();


public void setMDNReceipt(MDNReceipt MDNReceipt);

Remarks

After invoking CreateMDNReceipt, MDNReceipt will contain the entire text of the receipt to be returned to the client. It will report either success or failure depending on ScanResult; in either case it will be RFC-compliant and suitable for returning to the client.

The MDNReceipt will consist of the MDN itself, a human-readable message, MIME headers and footers, and a signature if applicable. The receipt may be generated by invoking CreateMDNReceipt and customized further by setting the parameters to CreateMDNReceipt.

A variety of configuration settings may be used to override the default generation of the outgoing MDN. The MIC algorithm used in the MDN may be set with MDNMICAlgorithm;. MDNReportingUA specifies the reporting agent, and MDNSendingMode may be used to specify the "disposition-mode" field in the MDN.

The signature, if any, will use the protocol specified by the ReceiptSigningProtocol configuration setting, and the certificate specified.

Error reporting may be controlled by configuring ErrorReportingFlags. By default, any errors will cause MDNReceipt to report a failure to process the message (either "failed/Failure" or "processed/Error" will be reported, according to the specification and the type of error). Setting ErrorReportingFlags will cause the MDNReceipt to overlook the chosen types of errors. If all errors are overlooked, the MDNReceipt will report success and calculate a MIC on the original message as usual. A warning may be reported by setting the MDNWarning configuration setting.

MDNReceipt will always be generated by the component; however, if MDNTo is empty, an MDN-based receipt has not been requested. One may be sent anyway at the option of the server. If MDNTo is nonempty, the receipt MUST be returned according to RFC specifications. In AS2, the MDN should be returned in the body of the HTTP reply, or if ReceiptDeliveryOption is nonempty, to the URL specified there instead. In AS3, the MDN should be returned to the URL specified in MDNTo.

MDNTo Property (AS1Receiver Class)

The recipient for the Message Disposition Notification (MDN).

Syntax

public String getMDNTo();

Default Value

""

Remarks

MDNTo corresponds to the Disposition-Notification-To header of RequestHeaders. If nonempty, the client has requested an MDN receipt (typically the actual value is irrelevant). This receipt will be generated in a call to ProcessRequest or CreateMDNReceipt, and may be sent by calling SendResponse.

The receipt will be contained in MDNReceipt. If ReceiptDeliveryOption is empty, the receipt should be synchronously delivered in the HTTP response; otherwise, it should be delivered asynchronously to the URL specified. In either case, SendResponse will send the response as appropriate.

According to RFC specifications, MDNReceipt must be sent if requested by the client. If MDNTo is empty the MDN may be sent or not at the option of the server.

This property is read-only.

MessageId Property (AS1Receiver Class)

The message ID of the incoming message.

Syntax

public String getMessageId();

Default Value

""

Remarks

MessageId corresponds to the Message-Id header of Request, and will be used as the Original-Message-Id header of MDNReceipt.

This property is read-only.

Password Property (AS1Receiver Class)

The password for your incoming mail server.

Syntax

public String getPassword();


public void setPassword(String password);

Default Value

""

Remarks

The password for your incoming mail server. Set this before invoking Connect.

Request Property (AS1Receiver Class)

The AS1 request to be processed.

Syntax

public byte[] getRequest();


public void setRequest(byte[] request);

Default Value

""

Remarks

You may specify the request manually, or you may load the request from the mail server by invoking ReadRequest.

The headers generally should be specified separately in RequestHeaders.

RequestHeaders Property (AS1Receiver Class)

The headers in the AS1 request.

Syntax

public HeaderList getRequestHeaders();


public void setRequestHeaders(HeaderList requestHeaders);

Remarks

The headers will include any and all headers attached by the mail server(s).

RequestHeadersString Property (AS1Receiver Class)

The headers in the AS1 request.

Syntax

public String getRequestHeadersString();


public void setRequestHeadersString(String requestHeadersString);

Default Value

""

Remarks

The headers will include any and all headers attached by the mail server(s).

ScanResult Property (AS1Receiver Class)

The result of invoking ParseRequest .

Syntax

public int getScanResult();

Default Value

0

Remarks

ScanResult will contain information about any errors that occurred while invoking ParseRequest or ProcessRequest. ScanResult will contain 0 if no errors occurred, otherwise it will contain one or more of the following errors. If multiple errors are reported the results will be OR-ed together.

This property is read-only.

SendTo Property (AS1Receiver Class)

The recipient of the original message.

Syntax

public String getSendTo();


public void setSendTo(String sendTo);

Default Value

""

Remarks

The recipient of the original message. The originator is given by From.

Note that From and SendTo correspond to the sender and recipient of the original message. For MDNs the roles are reversed, so that From indicates the recipient, and SendTo indicates the sender of the MDN.

SignerCert Property (AS1Receiver Class)

Your trading partner's certificate.

Syntax

public Certificate getSignerCert();


public void setSignerCert(Certificate signerCert);

Remarks

You must set your trading partner's certificate before processing any signed messages. This property should be set to a public key certificate.

If the trading partner's identity is unknown, you should first invoke ReadRequest and read the value of AS2To (or for AS3, AS3To). This will allow you to determine the correct certificate to use.

As a special case, you may set AcceptAnySignerCert to true. In this case, the class will attempt to validate the signature without knowing the certificate in advance. This is not recommended for production use, as it poses a security risk.

This property is not available at design time.

SSLAcceptServerCert Property (AS1Receiver Class)

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

Syntax

public Certificate getSSLAcceptServerCert();


public void setSSLAcceptServerCert(Certificate SSLAcceptServerCert);

Remarks

If it finds any issues with the certificate presented by the server, the class 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.

Please note that this functionality is provided only for cases where 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.

SSLCert Property (AS1Receiver Class)

The certificate to be used during SSL negotiation.

Syntax

public Certificate getSSLCert();


public void setSSLCert(Certificate SSLCert);

Remarks

The digital certificate that the class 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.

SSLProvider Property (AS1Receiver Class)

This specifies the SSL/TLS implementation to use.

Syntax

public int getSSLProvider();


public void setSSLProvider(int SSLProvider);


Enumerated values:
  public final static int sslpAutomatic = 0;
  public final static int sslpPlatform = 1;
  public final static int sslpInternal = 2;

Default Value

0

Remarks

This property specifies the SSL/TLS implementation to use. In most cases the default value of 0 (Automatic) is recommended and should not be changed. When set to 0 (Automatic) the class will select whether to use the platform implementation or the internal implementation depending on the operating system as well as the TLS version being used.

Possible values are:

In most cases using the default value (Automatic) is recommended. The class will select a provider depending on the current platform.

When Automatic is selected the platform implementation is used by default. When TLS 1.3 is enabled via SSLEnabledProtocols the internal implementation is used.

SSLServerCert Property (AS1Receiver Class)

The server certificate for the last established connection.

Syntax

public Certificate getSSLServerCert();

Remarks

SSLServerCert contains the server certificate for the last established connection.

SSLServerCert is reset every time a new connection is attempted.

This property is read-only.

SSLStartMode Property (AS1Receiver Class)

Determines how the class starts the SSL negotiation. By default, SSL will not be used.

Syntax

public int getSSLStartMode();


public void setSSLStartMode(int SSLStartMode);


Enumerated values:
  public final static int sslAutomatic = 0;
  public final static int sslImplicit = 1;
  public final static int sslExplicit = 2;
  public final static int sslNone = 3;

Default Value

3

Remarks

The SSLStartMode property may have one of the following values:

User Property (AS1Receiver Class)

The username for your incoming mail server.

Syntax

public String getUser();


public void setUser(String user);

Default Value

""

Remarks

The username for your incoming mail server. Set this before invoking Connect.

Config Method (As1receiver Class)

Sets or retrieves a configuration setting.

Syntax

public String config(String configurationString);

Remarks

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

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, 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 (As1receiver Class)

Connects to the incoming mail server.

Syntax

public void connect();

Remarks

Connects to the incoming mail server specified by MailServer. You must set User and Password prior to calling Connect. The connection will be maintained until you call Disconnect.

If you wish to connect in SSL you should first set the SSLStartMode property. Note that it is not necessary to explicitly connect to an SMTP server for outgoing mail; a connection will be created and destroyed each time a mail is sent.

CreateMDNReceipt Method (As1receiver Class)

Creates MDNReceipt .

Syntax

public void createMDNReceipt(String headers, String MDN, String message);

Remarks

CreateMDNReceipt may be invoked after ParseRequest to create an MDN-based receipt. The receipt will report success or failure depending on ErrorReportingFlags and the success or failure of ParseRequest.

This method populates MDNReceipt with a new MDNReceipt. The Headers, MDN, and Message parameters can be used to further customize the receipt, or empty string ("") parameters may be set to use the class generated defaults. Headers will set additional transport headers to be sent with the receipt (in the HTTP or SMTP headers of the signed receipt). MDN can be used to append additional headers to the Message Disposition Notification portion of the MDN Receipt. If MDN is set to a value prefixed with an at sign ("@"), the at sign will be removed and the specified MDN will be used in the receipt in place of the component generated value. Message will set the human-readable portion of the receipt, and should describe any error conditions that may have occurred.

DeleteMessage Method (As1receiver Class)

Deletes the message specified by MailMessageNumber .

Syntax

public void deleteMessage();

Remarks

Requests that the MailServer delete the message specified by MailMessageNumber. The message will not actually be deleted until the connection is closed.

Disconnect Method (As1receiver Class)

Disconnects from the incoming mail server.

Syntax

public void disconnect();

Remarks

Disconnects from the incoming mail server specified by MailServer.

ParseRequest Method (As1receiver Class)

Parses the EDI message and determines the EDIData .

Syntax

public void parseRequest();

Remarks

Processes the EDI message in the request (either from the HTTP context, or as given by Request and possibly RequestHeadersString). If the message is encrypted, it will be decrypted with the certificate specified in Certificate. If it is signed, the signature will be verified against the certificate specified in SignerCert.

If the message is scanned without difficulty, EDIData will be populated. If a problem occurs, an exception will be thrown. This might occur if the client used or requested unsupported algorithms or data formats. In this case, EDIData will not be determined.

The class may be configured to ignore certain errors by setting ErrorProcessingFlags. This will allow the message to be processed and EDIData to be determined. If any errors occur, an exception will be thrown and the ScanResult property will reflect the error condition.

Whether or not an exception is thrown, an MDNReceipt may be generated by invoking CreateMDNReceipt. In the case of a successful scan MDNReceipt will report the success, otherwise the receipt will provide information to the client about the error.

ProcessRequest may be used to scan and create the receipt in one step. ReadRequest may be used to scan the request headers only to obtain details that can be used to configure the correct settings for the partner.

ProcessQueue Method (As1receiver Class)

Send the messages queued for sending.

Syntax

public void processQueue(String directory);

Remarks

Invoking ProcessQueue sends the messages that have been queued by Queue.

ProcessRequest Method (As1receiver Class)

Processes the EDI data, and generates the receipt.

Syntax

public void processRequest();

Remarks

Invoking ProcessRequest automates the entire AS2 server process. The method scans the request, determines the EDIData, and generates the MDNReceipt. In a server environment the receipt may be returned by invoking SendResponse.

The method's functionality is the same as the combined functionality of ParseRequest and CreateMDNReceipt. The method's operation is controlled by ErrorProcessingFlags and ErrorReportingFlags, and ScanResult will be populated as in ParseRequest.

The method will throw an exception, as ParseRequest does, if a problem is found while processing the request. However, if the problem does not prevent an MDN from being generated, MDNReceipt will still be generated before the exception is thrown. In all cases, the receipt will be suitable for returning to the client. If an exception is thrown, the MDNReceipt will provide more detail on the cause of the error.

The class will populate EDIData if no errors occurred scanning the request, or if ErrorProcessingFlags had been previously configured to allow the error.

Queue Method (As1receiver Class)

Prepares and queues the message to the specified directory.

Syntax

public void queue(String directory);

Remarks

Invoking Queue will prepare and queue the AS1 message. It will be signed if SigningCert is set, encrypted if RecipientCert is set, and compressed if CompressionFormat is set. A receipt will be requested if MDNTo is set. The queued message can then be sent by invoking ProcessQueue.

ReadRequest Method (As1receiver Class)

Reads the AS1 request from the mail server.

Syntax

public void readRequest();

Remarks

In the Java edition, ReadRequest will retrieve the file specified by MailMessageNumber from the mail server. The request will be stored in Request and the headers in RequestHeaders. The headers will also be parsed as in ParseHeaders, and the appropriate values of From, SendTo, etc., will be populated. After looking up and setting your trading partner information (such as certificates) you may then call ProcessRequest.

Reset Method (As1receiver Class)

Resets the state of the control.

Syntax

public void reset();

Remarks

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

SelectMailMessage Method (As1receiver Class)

Selects and obtains information about the specified message.

Syntax

public void selectMailMessage();

Remarks

This method selects the message specified by MailMessageNumber and retrieves information about it.

After calling this method properties such as MailMessageHeaders, MailMessageDate, MailMessageFrom, etc., allow you to determine if this message is an AS1 message. Additional properties are exposed via the Config method.

If this message is an AS1 transmission, you may use ReadRequest to read it. The Request and RequestHeaders properties will contain the request and request headers, and From will be populated with the originator of the request. You may then set trading partner information and invoke ProcessRequest to process the request.

SendResponse Method (As1receiver Class)

Sends the MDN receipt.

Syntax

public void sendResponse();

Remarks

Sends the MDN receipt specified by MDNReceipt. You may create this receipt by invoking ProcessRequest or CreateMDNReceipt.

By default the class will assume that your SMTP server is located at the same address as your incoming mail server. To set a different address, to use a non default port, see the various Config settings. To use SMTPS (SSL), set the various SSL properties.

A response will only be sent if requested by the client. If MDNTo is empty, this method will do nothing.

ConnectionStatus Event (As1receiver Class)

This event is fired to indicate changes in the connection state.

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void connectionStatus(As1receiverConnectionStatusEvent e) {}
  ...
}

public class As1receiverConnectionStatusEvent {
  public String connectionEvent;
  public int statusCode;
  public String description;
}

Remarks

The ConnectionStatus event is fired when the connection state changes: for example, completion of a firewall or proxy connection or completion of a security handshake.

The ConnectionEvent parameter indicates the type of connection event. Values may include the following:

EndTransfer Event (As1receiver Class)

Fired when the message text completes transferring.

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void endTransfer(As1receiverEndTransferEvent e) {}
  ...
}

public class As1receiverEndTransferEvent {
}

Remarks

Fired when the message text completes transferring (on either a send or receive).

Error Event (As1receiver Class)

Fired when information is available about errors during data delivery.

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void error(As1receiverErrorEvent e) {}
  ...
}

public class As1receiverErrorEvent {
  public int errorCode;
  public String description;
}

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class throws 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.

Header Event (As1receiver Class)

This event is fired for every message header being retrieved.

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void header(As1receiverHeaderEvent e) {}
  ...
}

public class As1receiverHeaderEvent {
  public String field;
  public String value;
}

Remarks

The Field parameter contains the name of the header (in the same case as it is delivered). The Value parameter contains the header contents.

If the header line being retrieved is a continuation header line, then the Field parameter contains "" (empty string).

Log Event (As1receiver Class)

Fired with log information while processing a message.

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void log(As1receiverLogEvent e) {}
  ...
}

public class As1receiverLogEvent {
  public String logType;
  public byte[] logMessage;
}

Remarks

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

Log messages available through this event correspond to log files written to LogDirectory. This event provides a way to obtain log messages without relying on files on disk. This event fires regardless of the value of LogDirectory (i.e. when LogDirectory is empty the event will still fire).

The LogMessage event parameter holds the raw log data.

The LogType event parameter indicates the type of log. Possible values are:

PITrail Event (As1receiver Class)

Traces the commands sent to the mail server, and the respective replies.

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void PITrail(As1receiverPITrailEvent e) {}
  ...
}

public class As1receiverPITrailEvent {
  public int direction;
  public String message;
}

Remarks

The PITrail event is useful for debugging purposes. It shows all the interaction between the client and the server, line by line, except for message header and body transfers.

The Message parameter contains the full text of the message. The Direction parameter shows the originator of the message:

SignerCertInfo Event (As1receiver Class)

This event is fired during verification of the signed message.

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void signerCertInfo(As1receiverSignerCertInfoEvent e) {}
  ...
}

public class As1receiverSignerCertInfoEvent {
  public String issuer;
  public String serialNumber;
  public String subjectKeyIdentifier;
  public byte[] certEncoded;
}

Remarks

During verification, this event will be raised while parsing the signer's certificate information. The parameters that are populated depend on the options used when the message was originally signed. This information may be used to select the correct certificate for SignerCert to verify the signature. The following parameters may be populated:

Issuer specifies the subject of the issuer of the certificate used to sign the message.

SerialNumber is the serial number of the certificate used to sign the message.

SubjectKeyIdentifier is the X.509 subjectKeyIdentifier extension value of the certificate used to sign the message encoded as a hex string.

CertEncoded is the PEM (Base64 encoded) public certificate needed to verify the signature.

Note: When this value is present, the class will automatically use this value to perform signature verification.

The SignerCert property may be set from within this event. In this manner, the decision of which signer certificate to load may be delayed until the parameters of this event are inspected and the correct certificate can be located and loaded.

SSLServerAuthentication Event (As1receiver Class)

Fired after the server presents its certificate to the client.

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void SSLServerAuthentication(As1receiverSSLServerAuthenticationEvent e) {}
  ...
}

public class As1receiverSSLServerAuthenticationEvent {
  public byte[] certEncoded;
  public String certSubject;
  public String certIssuer;
  public String status;
  public boolean accept;
}

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 (As1receiver Class)

Fired when secure connection progress messages are available.

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void SSLStatus(As1receiverSSLStatusEvent e) {}
  ...
}

public class As1receiverSSLStatusEvent {
  public String message;
}

Remarks

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

StartTransfer Event (As1receiver Class)

Fired when the message text starts transferring (on either a send or receive).

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void startTransfer(As1receiverStartTransferEvent e) {}
  ...
}

public class As1receiverStartTransferEvent {
}

Remarks

Fired when the message text starts transferring (on either a send or receive).

Transfer Event (As1receiver Class)

Fired while the message text gets transferred to or from MailServer .

Syntax

public class DefaultAs1receiverEventListener implements As1receiverEventListener {
  ...
  public void transfer(As1receiverTransferEvent e) {}
  ...
}

public class As1receiverTransferEvent {
  public long bytesTransferred;
}

Remarks

Fired while the message text gets transferred to or from MailServer.

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

public Certificate();

Creates a Certificate instance whose properties can be set. This is useful for use with CERTMGR when generating new certificates.

public Certificate( certificateFile);

Opens CertificateFile and reads out the contents as an X.509 public key.

public Certificate( certificateData);

Parses CertificateData as an X.509 public key.

public Certificate( certStoreType,  store,  storePassword,  subject);

CertStoreType identifies the type of certificate store to use. See StoreType for descriptions of the different certificate stores. Store is a file containing the certificate store. StorePassword is the password used to protect the store. After the store has been successfully opened, the class will attempt to find the certificate identified by Subject . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN).

public Certificate( certStoreType,  store,  storePassword,  subject,  configurationString);

CertStoreType identifies the type of certificate store to use. See StoreType for descriptions of the different certificate stores. Store is a file containing the certificate store. StorePassword is the password used to protect the store. ConfigurationString is a newline separated list of name-value pairs that may be used to modify the default behavior. Possible values include "PersistPFXKey", which shows whether or not the PFX key is persisted after performing operations with the private key. This correlates to the PKCS12_NO_PERSIST_KEY CryptoAPI option. The default value is True (the key is persisted). "Thumbprint" - an MD5, SHA-1, or SHA-256 thumbprint of the certificate to load. When specified, this value is used to select the certificate in the store. This is applicable to cstUser, cstMachine, cstPublicKeyFile, and cstPFXFile store types. "UseInternalSecurityAPI" shows whether the platform (default) or the internal security API is used when performing certificate-related operations. After the store has been successfully opened, the class will attempt to find the certificate identified by Subject . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN).

public Certificate( certStoreType,  store,  storePassword,  encoded);

CertStoreType identifies the type of certificate store to use. See StoreType for descriptions of the different certificate stores. Store is a file containing the certificate store. StorePassword is the password used to protect the store. After the store has been successfully opened, the class will load Encoded as an X.509 certificate and search the opened store for a corresponding private key.

public Certificate( certStoreType,  storeBlob,  storePassword,  subject);

CertStoreType identifies the type of certificate store to use. See StoreType for descriptions of the different certificate stores. StoreBlob is a string (binary- or Base64-encoded) containing the certificate data. StorePassword is the password used to protect the store. After the store has been successfully opened, the class will attempt to find the certificate identified by Subject . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN).

public Certificate( certStoreType,  storeBlob,  storePassword,  subject,  configurationString);

CertStoreType identifies the type of certificate store to use. See StoreType for descriptions of the different certificate stores. StoreBlob is a string (binary- or Base64-encoded) containing the certificate data. StorePassword is the password used to protect the store. After the store has been successfully opened, the class will attempt to find the certificate identified by Subject . This can be either a complete or a substring match of the X.509 certificate's subject Distinguished Name (DN).

public Certificate( certStoreType,  storeBlob,  storePassword,  encoded);

CertStoreType identifies the type of certificate store to use. See StoreType for descriptions of the different certificate stores. Store is a string (binary- or Base64-encoded) containing the certificate store. StorePassword is the password used to protect the store. After the store has been successfully opened, the class will load Encoded as an X.509 certificate and search the opened store for a corresponding private key.

EDIAttachment Type

This describes the file being attached.

Remarks

Information about the file's location that is being attached to the message is contained here.

Fields

Constructors

public EDIAttachment();

public EDIAttachment( filename);

public EDIAttachment( filename,  contentType);

public EDIAttachment( filename,  contentType,  headers);

EDIData Type

The EDI payload of the AS2 message.

Remarks

The EDI payload of the AS2 message.

Fields

Constructors

public EDIData();

public EDIData( data,  EDIType);

public EDIData( filename,  EDIType);

Firewall Type

The firewall the class 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

public Firewall();

Header Type

This is an HTTP header as it is received from the server.

Remarks

When a header is received through a Header event, it is parsed into a Header type. This type contains a Field, and its corresponding Value.

Fields

Constructors

public Header();

public Header( field,  value);

MDNReceipt Type

The complete MDN Receipt returned by the receiver.

Remarks

The complete MDN Receipt contains the Message Disposition Notification (MDN) and an optional signature.

Fields

Constructors

public MDNReceipt();

public MDNReceipt( headers,  content);

Config Settings (As1receiver Class)

AS1Receiver Config Settings

AS1 Config Settings

SSL Config Settings

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
..
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

-----BEGIN CERTIFICATE-----
MIIEKzCCAxOgAwIBAgIRANTET4LIkxdH6P+CFIiHvTowDQYJKoZIhvcNAQELBQAw
...
eWHV5OW1K53o/atv59sOiW5K3crjFhsBOd5Q+cJJnU+SWinPKtANXMht+EDvYY2w
F0I1XhM+pKj7FjDr+XNj
-----END CERTIFICATE-----
\r \n
-----BEGIN CERTIFICATE-----
MIIEFjCCAv6gAwIBAgIQetu1SMxpnENAnnOz1P+PtTANBgkqhkiG9w0BAQUFADBp
..
d8q23djXZbVYiIfE9ebr4g3152BlVCHZ2GyPdjhIuLeH21VbT/dyEHHA
-----END CERTIFICATE-----

Base Config Settings

Trappable Errors (As1receiver Class)

AS1Receiver Errors

POP Errors

TCPClient Errors

TCP/IP Errors

SMTP Errors

TCPClient Errors

TCP/IP Errors

SMIME Errors