STOMP Component

Properties   Methods   Events   Config Settings   Errors  

A simple but powerful STOMP client implementation.

Syntax

TiotSTOMP

Remarks

The STOMP component provides an easy-to-use STOMP client implementation that supports STOMP versions 1.1 and 1.2. The component supports both plaintext and TLS-enabled connections over TCP.

Connecting

Connecting to a STOMP server is easy; in the simplest case just call the ConnectTo method, passing the server's hostname and port number.

When connecting to a STOMP server, the component sends information from the following properties, if populated:

• IncomingHeartbeat
• OutgoingHeartbeat
• User
• Password

In addition to the above properties, the following configuration settings can be set before connecting (though in most cases this is not necessary):

• SupportedVersions: Controls which STOMP versions the component advertises support for.
• VirtualHost: Controls the virtual host to connect to. If left empty (default), the value from RemoteHost is used.

Subscriptions & Receiving Messages

When Subscribe is called, it will return a subscription Id. To unsubscribe, pass this subscription Id to the Unsubscribe method.

After subscribing to a message destination, any messages received will cause the MessageIn event to fire.

Basic Subscriptions Example stomp1.OnMessageIn += (s, e) => { Console.WriteLine("Received message from destination '" + e.Destination + "':"); Console.WriteLine(e.Data); }; string subId = stomp1.Subscribe("test/a/b", false); // Some time later... stomp1.Unsubscribe(subId);

Refer to Subscribe, Unsubscribe, and MessageIn for more information about subscriptions and receiving messages.

Sending Messages

To send messages, use the SendMessage and SendData methods. SendMessage is used to send messages with string payloads, while SendData is used to send messages with binary payloads.

Send String Message Example stomp1.SendMessage("test/a/b", "Hello, world!");

Send Binary Message Example byte[] fileContent = File.ReadAllBytes("C:\test\stuff.dat"); stomp1.SendData("test/a/b", fileContent);

Refer to SendMessage and SendData for more information about sending messages.

Using Transactions

STOMP transactions are used to group messages together for processing on the server. Messages sent as part of a transaction will not be delivered by the server until the transaction is committed. If the transaction is aborted, the server will discard the messages without attempting to deliver them.

Basic Transaction Example // Open a new transaction. stomp1.BeginTransaction("txn1"); // Set the Transaction property to make sure that messages are sent as part of the transaction. stomp1.Transaction = "txn1"; stomp1.SendMessage("test/a/b", "Hello, world!"); stomp1.SendMessage("test/a/b", "This is a test."); stomp1.SendMessage("test/a/b", "Another test!"); // At this point, none of the messages sent above would have been delivered to any clients // subscribed to the "test/a/b" destination yet, because the transaction is still open. // If we close and commit the transaction, the server will then deliver the messages to subscribers, // queue them, or process them in another manner; the behavior is server-dependent. stomp1.CommitTransaction("txn1"); // Or, the transaction can be aborted, in which case the server will discard the messages // without delivering them to the subscribers. //stomp1.AbortTransaction("txn1"); // Reset (or change) the Transaction property after committing or aborting a transaction // so that future messages are not associated with the previous transaction. stomp1.Transaction = "";

Refer to BeginTransaction for more information about using transactions.

Property List

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

Method List

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

Event List

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

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

Connected Property (STOMP Component)

Triggers a connection or disconnection.

Syntax

__property bool Connected = { read=FConnected, write=FSetConnected };

Default Value

False

Remarks

This property triggers a connection or disconnection. Setting this property to True makes the component attempt to connect to the host identified by the RemoteHost property. If successful, after the connection is achieved the value of the property changes to True and the Connected event is fired.

Setting this property to False closes the connection.

When connecting to a STOMP server, the component sends information from the following properties, if populated:

• IncomingHeartbeat
• OutgoingHeartbeat
• User
• Password

In addition to the above properties, the following configuration settings can be set before connecting (though in most cases this is not necessary):

• SupportedVersions: Controls which STOMP versions the component advertises support for.
• VirtualHost: Controls the virtual host to connect to. If left empty (default), the value from RemoteHost is used.

This property is not available at design time.

Data Type

Boolean

ContentType Property (STOMP Component)

The content type of the outgoing message.

Syntax

__property String ContentType = { read=FContentType, write=FSetContentType };

Default Value

"text/plain"

Remarks

This property is used to specify the content type (MIME type) for outgoing messages sent using SendMessage. The default value is text/plain, which should be sufficient is most cases.

Note that this property is ignored for messages sent using SendData, as such messages do not have a content-type header added to them. The absence of a content-type header indicates to the server that the data should be treated as a binary blob.

This property is not available at design time.

Data Type

String

FirewallAutoDetect Property (STOMP Component)

Whether to automatically detect and use firewall system settings, if available.

Syntax

__property bool FirewallAutoDetect = { read=FFirewallAutoDetect, write=FSetFirewallAutoDetect };

Default Value

False

Remarks

Whether to automatically detect and use firewall system settings, if available.

Data Type

Boolean

FirewallType Property (STOMP Component)

The type of firewall to connect through.

Syntax

__property TiotSTOMPFirewallTypes FirewallType = { read=FFirewallType, write=FSetFirewallType };

enum TiotSTOMPFirewallTypes {
  fwNone=0,
  fwTunnel=1,
  fwSOCKS4=2,
  fwSOCKS5=3,
  fwSOCKS4A=10
};

Default Value

fwNone

Remarks

The type of firewall to connect through. The applicable values are as follows:

Data Type

Integer

FirewallHost Property (STOMP Component)

The name or IP address of the firewall (optional).

Syntax

__property String FirewallHost = { read=FFirewallHost, write=FSetFirewallHost };

Default Value

""

Remarks

The name or IP address of the firewall (optional). If a FirewallHost is given, the requested connections will be authenticated through the specified firewall when connecting.

If this property is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, this property is set to the corresponding address. If the search is not successful, the component raises an exception.

Data Type

String

FirewallPassword Property (STOMP Component)

A password if authentication is to be used when connecting through the firewall.

Syntax

__property String FirewallPassword = { read=FFirewallPassword, write=FSetFirewallPassword };

Default Value

""

Remarks

A password if authentication is to be used when connecting through the firewall. If FirewallHost is specified, the FirewallUser and FirewallPassword properties are used to connect and authenticate to the given firewall. If the authentication fails, the component raises an exception.

Data Type

String

FirewallPort Property (STOMP Component)

The Transmission Control Protocol (TCP) port for the firewall Host .

Syntax

__property int FirewallPort = { read=FFirewallPort, write=FSetFirewallPort };

Default Value

0

Remarks

The Transmission Control Protocol (TCP) port for the firewall FirewallHost. See the description of the FirewallHost property for details.

Note: This property is set automatically when FirewallType is set to a valid value. See the description of the FirewallType property for details.

Data Type

Integer

FirewallUser Property (STOMP Component)

A username if authentication is to be used when connecting through a firewall.

Syntax

__property String FirewallUser = { read=FFirewallUser, write=FSetFirewallUser };

Default Value

""

Remarks

A username if authentication is to be used when connecting through a firewall. If FirewallHost is specified, this property and the FirewallPassword property are used to connect and authenticate to the given Firewall. If the authentication fails, the component raises an exception.

Data Type

String

HeaderCount Property (STOMP Component)

The number of records in the Header arrays.

Syntax

__property int HeaderCount = { read=FHeaderCount, write=FSetHeaderCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• HeaderKey
• HeaderValue

The array indices start at 0 and end at HeaderCount - 1.

This property is not available at design time.

Data Type

Integer

HeaderKey Property (STOMP Component)

This header's key.

Syntax

__property String HeaderKey[int HeaderIndex] = { read=FHeaderKey, write=FSetHeaderKey };

Default Value

""

Remarks

This header's key.

This property holds this header's key (or name).

The HeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the HeaderCount property.

This property is not available at design time.

Data Type

String

HeaderValue Property (STOMP Component)

This header's value.

Syntax

__property String HeaderValue[int HeaderIndex] = { read=FHeaderValue, write=FSetHeaderValue };

Default Value

""

Remarks

This header's value.

This property holds this header's value.

The HeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the HeaderCount property.

This property is not available at design time.

Data Type

String

IncomingHeartbeat Property (STOMP Component)

Specifies the server-to-component heartbeat timing.

Syntax

__property int IncomingHeartbeat = { read=FIncomingHeartbeat, write=FSetIncomingHeartbeat };

Default Value

0

Remarks

This property specifies the incoming heartbeat interval, which is the number of seconds without any server-to-component communication that the server will allow to elapse before sending the component a heartbeat (keepalive). If set to 0 (default), incoming heartbeats are disabled.

For information about outgoing (component-to-server) heartbeats; see the OutgoingHeartbeat property.

Before Connecting

Before connecting, this property is used to specify the desired incoming heartbeat interval (in seconds). By default, this property is set to 0 (no heartbeat).

During the connection process, the incoming heartbeat interval requested by the component is compared to the minimum interval supported by the server, and the larger of the two values is selected. If one or both sides supply 0 as their value, then no server-to-component heartbeats will be sent.

After Connecting

After connecting, this property cannot be set. Instead, it reflects the incoming heartbeat interval agreed upon by the component and the server during the connection process.

As the incoming heartbeat interval negotiation notes above imply, it is possible that the agreed-upon incoming heartbeat interval may either be larger than what the component requested, or may be 0 (i.e., incoming heartbeats are disabled).

This property is not available at design time.

Data Type

Integer

LocalHost Property (STOMP Component)

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

Syntax

__property String LocalHost = { read=FLocalHost, write=FSetLocalHost };

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.

Data Type

String

LocalPort Property (STOMP Component)

The TCP port in the local host where the component binds.

Syntax

__property int LocalPort = { read=FLocalPort, write=FSetLocalPort };

Default Value

0

Remarks

This property must be set before a connection is attempted. It instructs the component to bind to a specific port (or communication endpoint) in the local machine.

Setting this property to 0 (default) enables the system to choose an open port at random. The chosen port will be returned by the LocalPort property after the connection is established.

LocalPort cannot be changed once a connection is made. Any attempt to set this property when a connection is active will generate an error.

This property is useful when trying to connect to services that require a trusted port on the client side.

Data Type

Integer

OutgoingHeartbeat Property (STOMP Component)

Specifies the component-to-server heartbeat timing.

Syntax

__property int OutgoingHeartbeat = { read=FOutgoingHeartbeat, write=FSetOutgoingHeartbeat };

Default Value

0

Remarks

This property specifies the outgoing heartbeat interval, which is the number of seconds without any component-to-server communication that the component will allow to elapse before sending the server a heartbeat (keepalive). If set to 0 (default), outgoing heartbeats are disabled.

For information about incoming (server-to-component) heartbeats; see the IncomingHeartbeat property.

Before Connecting

Before connecting, this property is used to specify the minimum supported outgoing heartbeat interval (in seconds). By default, this property is set to 0 (no heartbeat).

During the connection process, the minimum outgoing heartbeat interval supported by the component is compared to the interval requested by the server, and the larger of the two values is selected. If one or both sides supply 0 as their value, then no component-to-server heartbeats will be sent.

After Connecting

After connecting, this property cannot be set. Instead, it reflects the outgoing heartbeat interval agreed upon by the component and the server during the connection process.

As the outgoing heartbeat interval negotiation notes above imply, it is possible that the agreed-upon outgoing heartbeat interval may either be larger than the component's supported minimum, or may be 0 (i.e., outgoing heartbeats are disabled).

This property is not available at design time.

Data Type

Integer

ParsedHeaderCount Property (STOMP Component)

The number of records in the ParsedHeader arrays.

Syntax

__property int ParsedHeaderCount = { read=FParsedHeaderCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• ParsedHeaderKey
• ParsedHeaderValue

The array indices start at 0 and end at ParsedHeaderCount - 1.

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

Data Type

Integer

ParsedHeaderKey Property (STOMP Component)

This header's key.

Syntax

__property String ParsedHeaderKey[int ParsedHeaderIndex] = { read=FParsedHeaderKey };

Default Value

""

Remarks

This header's key.

This property holds this header's key (or name).

The ParsedHeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ParsedHeaderCount property.

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

Data Type

String

ParsedHeaderValue Property (STOMP Component)

This header's value.

Syntax

__property String ParsedHeaderValue[int ParsedHeaderIndex] = { read=FParsedHeaderValue };

Default Value

""

Remarks

This header's value.

This property holds this header's value.

The ParsedHeaderIndex parameter specifies the index of the item in the array. The size of the array is controlled by the ParsedHeaderCount property.

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

Data Type

String

Password Property (STOMP Component)

A password if authentication is to be used.

Syntax

__property String Password = { read=FPassword, write=FSetPassword };

Default Value

""

Remarks

If this property is set when connecting, the component will send the password in the passcode header.

This property is not available at design time.

Data Type

String

ReadyToSend Property (STOMP Component)

Indicates whether the component is ready to send data.

Syntax

__property bool ReadyToSend = { read=FReadyToSend };

Default Value

false

Remarks

This property indicates that the underlying TCP/IP subsystem is ready to accept data. This is True after connecting to the remote host, and will become False if a call to SendData or SendMessage fails due to a WOULDBLOCK condition.

Once data can be sent again, the ReadyToSend event will fire and this property will be True.

If a WOULDBLOCK error occurs while sending a message the component will automatically complete the transmission when sending is possible. No action needs to be taken to re-send the message. ReadyToSend will fire after the component completes any partially sent messages.

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

Data Type

Boolean

RemoteHost Property (STOMP Component)

The address of the remote host. Domain names are resolved to IP addresses.

Syntax

__property String RemoteHost = { read=FRemoteHost, write=FSetRemoteHost };

Default Value

""

Remarks

This property specifies the IP address (IP number in dotted internet format) or Domain Name of the remote host. It is set before a connection is attempted and cannot be changed once a connection is established.

If this property is set to a Domain Name, a DNS request is initiated, and upon successful termination of the request, this 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.

By default the component will connect in plaintext. To enable SSL set SSLEnabled to True.

Data Type

String

RemotePort Property (STOMP Component)

The port of the STOMP server (default is 61613). The default port for SSL is 61612.

Syntax

__property int RemotePort = { read=FRemotePort, write=FSetRemotePort };

Default Value

61613

Remarks

This property specifies a service port on the remote host to connect to.

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.

This property is not available at design time.

Data Type

Integer

RequestReceipts Property (STOMP Component)

Whether the component should request that the server provide message receipts.

Syntax

__property bool RequestReceipts = { read=FRequestReceipts, write=FSetRequestReceipts };

Default Value

false

Remarks

This property is used to specify whether the component should request that the server send back confirmations (known as a "receipts" in STOMP terminology) when it receives messages from the component. This is done by adding a receipt header to the outgoing frame.

When this property is set to True, and a message is sent, the ReceiptOut event will fire immediately after the MessageOut event fires.

Note that, while this property only controls receipt requests for outgoing messages, the component is capable of requesting receipts for any outgoing frame type. Use this table to determine which API members control receipt request for each outgoing frame type (all are False by default):

Received Receipt Notes

When a receipt is received, the ReceiptIn event fires.

Note that receipts are cumulative, and a STOMP server is not required to send back discrete receipts for each frame it receives that has a receipt header. For example, if the component has sent four message frames with the following receipt header values (in chronological order):

1. SEND-3
2. SEND-4
3. SEND-5
4. SEND-6

This property is not available at design time.

Data Type

Boolean

SSLAcceptServerCertEffectiveDate Property (STOMP Component)

The date on which this certificate becomes valid.

Syntax

__property String SSLAcceptServerCertEffectiveDate = { read=FSSLAcceptServerCertEffectiveDate };

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only.

Data Type

String

SSLAcceptServerCertExpirationDate Property (STOMP Component)

The date on which the certificate expires.

Syntax

__property String SSLAcceptServerCertExpirationDate = { read=FSSLAcceptServerCertExpirationDate };

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only.

Data Type

String

SSLAcceptServerCertExtendedKeyUsage Property (STOMP Component)

A comma-delimited list of extended key usage identifiers.

Syntax

__property String SSLAcceptServerCertExtendedKeyUsage = { read=FSSLAcceptServerCertExtendedKeyUsage };

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only.

Data Type

String

SSLAcceptServerCertFingerprint Property (STOMP Component)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

__property String SSLAcceptServerCertFingerprint = { read=FSSLAcceptServerCertFingerprint };

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only.

Data Type

String

SSLAcceptServerCertFingerprintSHA1 Property (STOMP Component)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

__property String SSLAcceptServerCertFingerprintSHA1 = { read=FSSLAcceptServerCertFingerprintSHA1 };

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only.

Data Type

String

SSLAcceptServerCertFingerprintSHA256 Property (STOMP Component)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

__property String SSLAcceptServerCertFingerprintSHA256 = { read=FSSLAcceptServerCertFingerprintSHA256 };

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only.

Data Type

String

SSLAcceptServerCertIssuer Property (STOMP Component)

The issuer of the certificate.

Syntax

__property String SSLAcceptServerCertIssuer = { read=FSSLAcceptServerCertIssuer };

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only.

Data Type

String

SSLAcceptServerCertPrivateKey Property (STOMP Component)

The private key of the certificate (if available).

Syntax

__property String SSLAcceptServerCertPrivateKey = { read=FSSLAcceptServerCertPrivateKey };

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The SSLAcceptServerCertPrivateKey may be available but not exportable. In this case, SSLAcceptServerCertPrivateKey returns an empty string.

This property is read-only.

Data Type

String

SSLAcceptServerCertPrivateKeyAvailable Property (STOMP Component)

Whether a PrivateKey is available for the selected certificate.

Syntax

__property bool SSLAcceptServerCertPrivateKeyAvailable = { read=FSSLAcceptServerCertPrivateKeyAvailable };

Default Value

false

Remarks

Whether a SSLAcceptServerCertPrivateKey is available for the selected certificate. If SSLAcceptServerCertPrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

Data Type

Boolean

SSLAcceptServerCertPrivateKeyContainer Property (STOMP Component)

The name of the PrivateKey container for the certificate (if available).

Syntax

__property String SSLAcceptServerCertPrivateKeyContainer = { read=FSSLAcceptServerCertPrivateKeyContainer };

Default Value

""

Remarks

The name of the SSLAcceptServerCertPrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

Data Type

String

SSLAcceptServerCertPublicKey Property (STOMP Component)

The public key of the certificate.

Syntax

__property String SSLAcceptServerCertPublicKey = { read=FSSLAcceptServerCertPublicKey };

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only.

Data Type

String

SSLAcceptServerCertPublicKeyAlgorithm Property (STOMP Component)

The textual description of the certificate's public key algorithm.

Syntax

__property String SSLAcceptServerCertPublicKeyAlgorithm = { read=FSSLAcceptServerCertPublicKeyAlgorithm };

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only.

Data Type

String

SSLAcceptServerCertPublicKeyLength Property (STOMP Component)

The length of the certificate's public key (in bits).

Syntax

__property int SSLAcceptServerCertPublicKeyLength = { read=FSSLAcceptServerCertPublicKeyLength };

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only.

Data Type

Integer

SSLAcceptServerCertSerialNumber Property (STOMP Component)

The serial number of the certificate encoded as a string.

Syntax

__property String SSLAcceptServerCertSerialNumber = { read=FSSLAcceptServerCertSerialNumber };

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only.

Data Type

String

SSLAcceptServerCertSignatureAlgorithm Property (STOMP Component)

The text description of the certificate's signature algorithm.

Syntax

__property String SSLAcceptServerCertSignatureAlgorithm = { read=FSSLAcceptServerCertSignatureAlgorithm };

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only.

Data Type

String

SSLAcceptServerCertStore Property (STOMP Component)

The name of the certificate store for the client certificate.

Syntax

__property String SSLAcceptServerCertStore = { read=FSSLAcceptServerCertStore, write=FSetSSLAcceptServerCertStore };
__property DynamicArray<Byte> SSLAcceptServerCertStoreB = { read=FSSLAcceptServerCertStoreB, write=FSetSSLAcceptServerCertStoreB };

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The SSLAcceptServerCertStoreType property denotes the type of the certificate store specified by SSLAcceptServerCertStore. If the store is password-protected, specify the password in SSLAcceptServerCertStorePassword.

SSLAcceptServerCertStore is used in conjunction with the SSLAcceptServerCertSubject property to specify client certificates. If SSLAcceptServerCertStore has a value, and SSLAcceptServerCertSubject or SSLAcceptServerCertEncoded is set, a search for a certificate is initiated. Please see the SSLAcceptServerCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

Data Type

Byte Array

SSLAcceptServerCertStorePassword Property (STOMP Component)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

__property String SSLAcceptServerCertStorePassword = { read=FSSLAcceptServerCertStorePassword, write=FSetSSLAcceptServerCertStorePassword };

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Data Type

String

SSLAcceptServerCertStoreType Property (STOMP Component)

The type of certificate store for this certificate.

Syntax

__property TiotSTOMPSSLAcceptServerCertStoreTypes SSLAcceptServerCertStoreType = { read=FSSLAcceptServerCertStoreType, write=FSetSSLAcceptServerCertStoreType };

enum TiotSTOMPSSLAcceptServerCertStoreTypes {
  cstUser=0,
  cstMachine=1,
  cstPFXFile=2,
  cstPFXBlob=3,
  cstJKSFile=4,
  cstJKSBlob=5,
  cstPEMKeyFile=6,
  cstPEMKeyBlob=7,
  cstPublicKeyFile=8,
  cstPublicKeyBlob=9,
  cstSSHPublicKeyBlob=10,
  cstP7BFile=11,
  cstP7BBlob=12,
  cstSSHPublicKeyFile=13,
  cstPPKFile=14,
  cstPPKBlob=15,
  cstXMLFile=16,
  cstXMLBlob=17,
  cstJWKFile=18,
  cstJWKBlob=19,
  cstSecurityKey=20,
  cstBCFKSFile=21,
  cstBCFKSBlob=22,
  cstPKCS11=23,
  cstAuto=99
};

Default Value

cstUser

Remarks

The type of certificate store for this certificate.

The component supports both public and private keys in a variety of formats. When the cstAuto value is used, the component will automatically determine the type. This property can take one of the following values:

Data Type

Integer

SSLAcceptServerCertSubjectAltNames Property (STOMP Component)

Comma-separated lists of alternative subject names for the certificate.

Syntax

__property String SSLAcceptServerCertSubjectAltNames = { read=FSSLAcceptServerCertSubjectAltNames };

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only.

Data Type

String

SSLAcceptServerCertThumbprintMD5 Property (STOMP Component)

The MD5 hash of the certificate.

Syntax

__property String SSLAcceptServerCertThumbprintMD5 = { read=FSSLAcceptServerCertThumbprintMD5 };

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

Data Type

String

SSLAcceptServerCertThumbprintSHA1 Property (STOMP Component)

The SHA-1 hash of the certificate.

Syntax

__property String SSLAcceptServerCertThumbprintSHA1 = { read=FSSLAcceptServerCertThumbprintSHA1 };

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

Data Type

String

SSLAcceptServerCertThumbprintSHA256 Property (STOMP Component)

The SHA-256 hash of the certificate.

Syntax

__property String SSLAcceptServerCertThumbprintSHA256 = { read=FSSLAcceptServerCertThumbprintSHA256 };

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

Data Type

String

SSLAcceptServerCertUsage Property (STOMP Component)

The text description of UsageFlags .

Syntax

__property String SSLAcceptServerCertUsage = { read=FSSLAcceptServerCertUsage };

Default Value

""

Remarks

The text description of SSLAcceptServerCertUsageFlags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only.

Data Type

String

SSLAcceptServerCertUsageFlags Property (STOMP Component)

The flags that show intended use for the certificate.

Syntax

__property int SSLAcceptServerCertUsageFlags = { read=FSSLAcceptServerCertUsageFlags };

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of SSLAcceptServerCertUsageFlags is a combination of the following flags:

Please see the SSLAcceptServerCertUsage property for a text representation of SSLAcceptServerCertUsageFlags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only.

Data Type

Integer

SSLAcceptServerCertVersion Property (STOMP Component)

The certificate's version number.

Syntax

__property String SSLAcceptServerCertVersion = { read=FSSLAcceptServerCertVersion };

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only.

Data Type

String

SSLAcceptServerCertSubject Property (STOMP Component)

The subject of the certificate used for client authentication.

Syntax

__property String SSLAcceptServerCertSubject = { read=FSSLAcceptServerCertSubject, write=FSetSSLAcceptServerCertSubject };

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

Data Type

String

SSLAcceptServerCertEncoded Property (STOMP Component)

The certificate (PEM/Base64 encoded).

Syntax

__property String SSLAcceptServerCertEncoded = { read=FSSLAcceptServerCertEncoded, write=FSetSSLAcceptServerCertEncoded };
__property DynamicArray<Byte> SSLAcceptServerCertEncodedB = { read=FSSLAcceptServerCertEncodedB, write=FSetSSLAcceptServerCertEncodedB };

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLAcceptServerCertStore and SSLAcceptServerCertSubject properties also may be used to specify a certificate.

When SSLAcceptServerCertEncoded is set, a search is initiated in the current SSLAcceptServerCertStore for the private key of the certificate. If the key is found, SSLAcceptServerCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SSLAcceptServerCertSubject is set to an empty string.

This property is not available at design time.

Data Type

Byte Array

SSLCertEffectiveDate Property (STOMP Component)

The date on which this certificate becomes valid.

Syntax

__property String SSLCertEffectiveDate = { read=FSSLCertEffectiveDate };

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only.

Data Type

String

SSLCertExpirationDate Property (STOMP Component)

The date on which the certificate expires.

Syntax

__property String SSLCertExpirationDate = { read=FSSLCertExpirationDate };

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only.

Data Type

String

SSLCertExtendedKeyUsage Property (STOMP Component)

A comma-delimited list of extended key usage identifiers.

Syntax

__property String SSLCertExtendedKeyUsage = { read=FSSLCertExtendedKeyUsage };

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only.

Data Type

String

SSLCertFingerprint Property (STOMP Component)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

__property String SSLCertFingerprint = { read=FSSLCertFingerprint };

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only.

Data Type

String

SSLCertFingerprintSHA1 Property (STOMP Component)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

__property String SSLCertFingerprintSHA1 = { read=FSSLCertFingerprintSHA1 };

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only.

Data Type

String

SSLCertFingerprintSHA256 Property (STOMP Component)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

__property String SSLCertFingerprintSHA256 = { read=FSSLCertFingerprintSHA256 };

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only.

Data Type

String

SSLCertIssuer Property (STOMP Component)

The issuer of the certificate.

Syntax

__property String SSLCertIssuer = { read=FSSLCertIssuer };

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only.

Data Type

String

SSLCertPrivateKey Property (STOMP Component)

The private key of the certificate (if available).

Syntax

__property String SSLCertPrivateKey = { read=FSSLCertPrivateKey };

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The SSLCertPrivateKey may be available but not exportable. In this case, SSLCertPrivateKey returns an empty string.

This property is read-only.

Data Type

String

SSLCertPrivateKeyAvailable Property (STOMP Component)

Whether a PrivateKey is available for the selected certificate.

Syntax

__property bool SSLCertPrivateKeyAvailable = { read=FSSLCertPrivateKeyAvailable };

Default Value

false

Remarks

Whether a SSLCertPrivateKey is available for the selected certificate. If SSLCertPrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

Data Type

Boolean

SSLCertPrivateKeyContainer Property (STOMP Component)

The name of the PrivateKey container for the certificate (if available).

Syntax

__property String SSLCertPrivateKeyContainer = { read=FSSLCertPrivateKeyContainer };

Default Value

""

Remarks

The name of the SSLCertPrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

Data Type

String

SSLCertPublicKey Property (STOMP Component)

The public key of the certificate.

Syntax

__property String SSLCertPublicKey = { read=FSSLCertPublicKey };

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only.

Data Type

String

SSLCertPublicKeyAlgorithm Property (STOMP Component)

The textual description of the certificate's public key algorithm.

Syntax

__property String SSLCertPublicKeyAlgorithm = { read=FSSLCertPublicKeyAlgorithm };

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only.

Data Type

String

SSLCertPublicKeyLength Property (STOMP Component)

The length of the certificate's public key (in bits).

Syntax

__property int SSLCertPublicKeyLength = { read=FSSLCertPublicKeyLength };

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only.

Data Type

Integer

SSLCertSerialNumber Property (STOMP Component)

The serial number of the certificate encoded as a string.

Syntax

__property String SSLCertSerialNumber = { read=FSSLCertSerialNumber };

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only.

Data Type

String

SSLCertSignatureAlgorithm Property (STOMP Component)

The text description of the certificate's signature algorithm.

Syntax

__property String SSLCertSignatureAlgorithm = { read=FSSLCertSignatureAlgorithm };

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only.

Data Type

String

SSLCertStore Property (STOMP Component)

The name of the certificate store for the client certificate.

Syntax

__property String SSLCertStore = { read=FSSLCertStore, write=FSetSSLCertStore };
__property DynamicArray<Byte> SSLCertStoreB = { read=FSSLCertStoreB, write=FSetSSLCertStoreB };

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The SSLCertStoreType property denotes the type of the certificate store specified by SSLCertStore. If the store is password-protected, specify the password in SSLCertStorePassword.

SSLCertStore is used in conjunction with the SSLCertSubject property to specify client certificates. If SSLCertStore has a value, and SSLCertSubject or SSLCertEncoded is set, a search for a certificate is initiated. Please see the SSLCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

Data Type

Byte Array

SSLCertStorePassword Property (STOMP Component)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

__property String SSLCertStorePassword = { read=FSSLCertStorePassword, write=FSetSSLCertStorePassword };

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Data Type

String

SSLCertStoreType Property (STOMP Component)

The type of certificate store for this certificate.

Syntax

__property TiotSTOMPSSLCertStoreTypes SSLCertStoreType = { read=FSSLCertStoreType, write=FSetSSLCertStoreType };

enum TiotSTOMPSSLCertStoreTypes {
  cstUser=0,
  cstMachine=1,
  cstPFXFile=2,
  cstPFXBlob=3,
  cstJKSFile=4,
  cstJKSBlob=5,
  cstPEMKeyFile=6,
  cstPEMKeyBlob=7,
  cstPublicKeyFile=8,
  cstPublicKeyBlob=9,
  cstSSHPublicKeyBlob=10,
  cstP7BFile=11,
  cstP7BBlob=12,
  cstSSHPublicKeyFile=13,
  cstPPKFile=14,
  cstPPKBlob=15,
  cstXMLFile=16,
  cstXMLBlob=17,
  cstJWKFile=18,
  cstJWKBlob=19,
  cstSecurityKey=20,
  cstBCFKSFile=21,
  cstBCFKSBlob=22,
  cstPKCS11=23,
  cstAuto=99
};

Default Value

cstUser

Remarks

The type of certificate store for this certificate.

The component supports both public and private keys in a variety of formats. When the cstAuto value is used, the component will automatically determine the type. This property can take one of the following values:

Data Type

Integer

SSLCertSubjectAltNames Property (STOMP Component)

Comma-separated lists of alternative subject names for the certificate.

Syntax

__property String SSLCertSubjectAltNames = { read=FSSLCertSubjectAltNames };

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only.

Data Type

String

SSLCertThumbprintMD5 Property (STOMP Component)

The MD5 hash of the certificate.

Syntax

__property String SSLCertThumbprintMD5 = { read=FSSLCertThumbprintMD5 };

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

Data Type

String

SSLCertThumbprintSHA1 Property (STOMP Component)

The SHA-1 hash of the certificate.

Syntax

__property String SSLCertThumbprintSHA1 = { read=FSSLCertThumbprintSHA1 };

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

Data Type

String

SSLCertThumbprintSHA256 Property (STOMP Component)

The SHA-256 hash of the certificate.

Syntax

__property String SSLCertThumbprintSHA256 = { read=FSSLCertThumbprintSHA256 };

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

Data Type

String

SSLCertUsage Property (STOMP Component)

The text description of UsageFlags .

Syntax

__property String SSLCertUsage = { read=FSSLCertUsage };

Default Value

""

Remarks

The text description of SSLCertUsageFlags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only.

Data Type

String

SSLCertUsageFlags Property (STOMP Component)

The flags that show intended use for the certificate.

Syntax

__property int SSLCertUsageFlags = { read=FSSLCertUsageFlags };

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of SSLCertUsageFlags is a combination of the following flags:

Please see the SSLCertUsage property for a text representation of SSLCertUsageFlags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only.

Data Type

Integer

SSLCertVersion Property (STOMP Component)

The certificate's version number.

Syntax

__property String SSLCertVersion = { read=FSSLCertVersion };

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only.

Data Type

String

SSLCertSubject Property (STOMP Component)

The subject of the certificate used for client authentication.

Syntax

__property String SSLCertSubject = { read=FSSLCertSubject, write=FSetSSLCertSubject };

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

Data Type

String

SSLCertEncoded Property (STOMP Component)

The certificate (PEM/Base64 encoded).

Syntax

__property String SSLCertEncoded = { read=FSSLCertEncoded, write=FSetSSLCertEncoded };
__property DynamicArray<Byte> SSLCertEncodedB = { read=FSSLCertEncodedB, write=FSetSSLCertEncodedB };

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLCertStore and SSLCertSubject properties also may be used to specify a certificate.

When SSLCertEncoded is set, a search is initiated in the current SSLCertStore for the private key of the certificate. If the key is found, SSLCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SSLCertSubject is set to an empty string.

This property is not available at design time.

Data Type

Byte Array

SSLEnabled Property (STOMP Component)

This property indicates whether Transport Layer Security/Secure Sockets Layer (TLS/SSL) is enabled.

Syntax

__property bool SSLEnabled = { read=FSSLEnabled, write=FSetSSLEnabled };

Default Value

False

Remarks

This property specifies whether TLS/SSL is enabled in the component. When False (default), the component operates in plaintext mode. When True, TLS/SSL is enabled.

TLS/SSL may also be enabled by setting SSLStartMode. Setting SSLStartMode will automatically update this property value.

This property is not available at design time.

Data Type

Boolean

SSLProvider Property (STOMP Component)

The Secure Sockets Layer/Transport Layer Security (SSL/TLS) implementation to use.

Syntax

__property TiotSTOMPSSLProviders SSLProvider = { read=FSSLProvider, write=FSetSSLProvider };

enum TiotSTOMPSSLProviders {
  sslpAutomatic=0,
  sslpPlatform=1,
  sslpInternal=2
};

Default Value

sslpAutomatic

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 component 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 as follows:

In most cases using the default value (Automatic) is recommended. The component 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.

Data Type

Integer

SSLServerCertEffectiveDate Property (STOMP Component)

The date on which this certificate becomes valid.

Syntax

__property String SSLServerCertEffectiveDate = { read=FSSLServerCertEffectiveDate };

Default Value

""

Remarks

The date on which this certificate becomes valid. Before this date, it is not valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

This property is read-only.

Data Type

String

SSLServerCertExpirationDate Property (STOMP Component)

The date on which the certificate expires.

Syntax

__property String SSLServerCertExpirationDate = { read=FSSLServerCertExpirationDate };

Default Value

""

Remarks

The date on which the certificate expires. After this date, the certificate will no longer be valid. The date is localized to the system's time zone. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

This property is read-only.

Data Type

String

SSLServerCertExtendedKeyUsage Property (STOMP Component)

A comma-delimited list of extended key usage identifiers.

Syntax

__property String SSLServerCertExtendedKeyUsage = { read=FSSLServerCertExtendedKeyUsage };

Default Value

""

Remarks

A comma-delimited list of extended key usage identifiers. These are the same as ASN.1 object identifiers (OIDs).

This property is read-only.

Data Type

String

SSLServerCertFingerprint Property (STOMP Component)

The hex-encoded, 16-byte MD5 fingerprint of the certificate.

Syntax

__property String SSLServerCertFingerprint = { read=FSSLServerCertFingerprint };

Default Value

""

Remarks

The hex-encoded, 16-byte MD5 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: bc:2a:72:af:fe:58:17:43:7a:5f:ba:5a:7c:90:f7:02

This property is read-only.

Data Type

String

SSLServerCertFingerprintSHA1 Property (STOMP Component)

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate.

Syntax

__property String SSLServerCertFingerprintSHA1 = { read=FSSLServerCertFingerprintSHA1 };

Default Value

""

Remarks

The hex-encoded, 20-byte SHA-1 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 30:7b:fa:38:65:83:ff:da:b4:4e:07:3f:17:b8:a4:ed:80:be:ff:84

This property is read-only.

Data Type

String

SSLServerCertFingerprintSHA256 Property (STOMP Component)

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate.

Syntax

__property String SSLServerCertFingerprintSHA256 = { read=FSSLServerCertFingerprintSHA256 };

Default Value

""

Remarks

The hex-encoded, 32-byte SHA-256 fingerprint of the certificate. This property is primarily used for keys which do not have a corresponding X.509 public certificate, such as PEM keys that only contain a private key. It is commonly used for SSH keys.

The following example illustrates the format: 6a:80:5c:33:a9:43:ea:b0:96:12:8a:64:96:30:ef:4a:8a:96:86:ce:f4:c7:be:10:24:8e:2b:60:9e:f3:59:53

This property is read-only.

Data Type

String

SSLServerCertIssuer Property (STOMP Component)

The issuer of the certificate.

Syntax

__property String SSLServerCertIssuer = { read=FSSLServerCertIssuer };

Default Value

""

Remarks

The issuer of the certificate. This property contains a string representation of the name of the issuing authority for the certificate.

This property is read-only.

Data Type

String

SSLServerCertPrivateKey Property (STOMP Component)

The private key of the certificate (if available).

Syntax

__property String SSLServerCertPrivateKey = { read=FSSLServerCertPrivateKey };

Default Value

""

Remarks

The private key of the certificate (if available). The key is provided as PEM/Base64-encoded data.

Note: The SSLServerCertPrivateKey may be available but not exportable. In this case, SSLServerCertPrivateKey returns an empty string.

This property is read-only.

Data Type

String

SSLServerCertPrivateKeyAvailable Property (STOMP Component)

Whether a PrivateKey is available for the selected certificate.

Syntax

__property bool SSLServerCertPrivateKeyAvailable = { read=FSSLServerCertPrivateKeyAvailable };

Default Value

false

Remarks

Whether a SSLServerCertPrivateKey is available for the selected certificate. If SSLServerCertPrivateKeyAvailable is True, the certificate may be used for authentication purposes (e.g., server authentication).

This property is read-only.

Data Type

Boolean

SSLServerCertPrivateKeyContainer Property (STOMP Component)

The name of the PrivateKey container for the certificate (if available).

Syntax

__property String SSLServerCertPrivateKeyContainer = { read=FSSLServerCertPrivateKeyContainer };

Default Value

""

Remarks

The name of the SSLServerCertPrivateKey container for the certificate (if available). This functionality is available only on Windows platforms.

This property is read-only.

Data Type

String

SSLServerCertPublicKey Property (STOMP Component)

The public key of the certificate.

Syntax

__property String SSLServerCertPublicKey = { read=FSSLServerCertPublicKey };

Default Value

""

Remarks

The public key of the certificate. The key is provided as PEM/Base64-encoded data.

This property is read-only.

Data Type

String

SSLServerCertPublicKeyAlgorithm Property (STOMP Component)

The textual description of the certificate's public key algorithm.

Syntax

__property String SSLServerCertPublicKeyAlgorithm = { read=FSSLServerCertPublicKeyAlgorithm };

Default Value

""

Remarks

The textual description of the certificate's public key algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_DH") or an object identifier (OID) string representing the algorithm.

This property is read-only.

Data Type

String

SSLServerCertPublicKeyLength Property (STOMP Component)

The length of the certificate's public key (in bits).

Syntax

__property int SSLServerCertPublicKeyLength = { read=FSSLServerCertPublicKeyLength };

Default Value

0

Remarks

The length of the certificate's public key (in bits). Common values are 512, 1024, and 2048.

This property is read-only.

Data Type

Integer

SSLServerCertSerialNumber Property (STOMP Component)

The serial number of the certificate encoded as a string.

Syntax

__property String SSLServerCertSerialNumber = { read=FSSLServerCertSerialNumber };

Default Value

""

Remarks

The serial number of the certificate encoded as a string. The number is encoded as a series of hexadecimal digits, with each pair representing a byte of the serial number.

This property is read-only.

Data Type

String

SSLServerCertSignatureAlgorithm Property (STOMP Component)

The text description of the certificate's signature algorithm.

Syntax

__property String SSLServerCertSignatureAlgorithm = { read=FSSLServerCertSignatureAlgorithm };

Default Value

""

Remarks

The text description of the certificate's signature algorithm. The property contains either the name of the algorithm (e.g., "RSA" or "RSA_MD5RSA") or an object identifier (OID) string representing the algorithm.

This property is read-only.

Data Type

String

SSLServerCertStore Property (STOMP Component)

The name of the certificate store for the client certificate.

Syntax

__property String SSLServerCertStore = { read=FSSLServerCertStore };
__property DynamicArray<Byte> SSLServerCertStoreB = { read=FSSLServerCertStoreB };

Default Value

"MY"

Remarks

The name of the certificate store for the client certificate.

The SSLServerCertStoreType property denotes the type of the certificate store specified by SSLServerCertStore. If the store is password-protected, specify the password in SSLServerCertStorePassword.

SSLServerCertStore is used in conjunction with the SSLServerCertSubject property to specify client certificates. If SSLServerCertStore has a value, and SSLServerCertSubject or SSLServerCertEncoded is set, a search for a certificate is initiated. Please see the SSLServerCertSubject property for details.

Designations of certificate stores are platform dependent.

The following designations are the most common User and Machine certificate stores in Windows:

When the certificate store type is cstPFXFile, this property must be set to the name of the file. When the type is cstPFXBlob, the property must be set to the binary contents of a PFX file (i.e., PKCS#12 certificate store).

This property is read-only.

Data Type

Byte Array

SSLServerCertStorePassword Property (STOMP Component)

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

Syntax

__property String SSLServerCertStorePassword = { read=FSSLServerCertStorePassword };

Default Value

""

Remarks

If the type of certificate store requires a password, this property is used to specify the password needed to open the certificate store.

This property is read-only.

Data Type

String

SSLServerCertStoreType Property (STOMP Component)

The type of certificate store for this certificate.

Syntax

__property TiotSTOMPSSLServerCertStoreTypes SSLServerCertStoreType = { read=FSSLServerCertStoreType };

enum TiotSTOMPSSLServerCertStoreTypes {
  cstUser=0,
  cstMachine=1,
  cstPFXFile=2,
  cstPFXBlob=3,
  cstJKSFile=4,
  cstJKSBlob=5,
  cstPEMKeyFile=6,
  cstPEMKeyBlob=7,
  cstPublicKeyFile=8,
  cstPublicKeyBlob=9,
  cstSSHPublicKeyBlob=10,
  cstP7BFile=11,
  cstP7BBlob=12,
  cstSSHPublicKeyFile=13,
  cstPPKFile=14,
  cstPPKBlob=15,
  cstXMLFile=16,
  cstXMLBlob=17,
  cstJWKFile=18,
  cstJWKBlob=19,
  cstSecurityKey=20,
  cstBCFKSFile=21,
  cstBCFKSBlob=22,
  cstPKCS11=23,
  cstAuto=99
};

Default Value

cstUser

Remarks

The type of certificate store for this certificate.

The component supports both public and private keys in a variety of formats. When the cstAuto value is used, the component will automatically determine the type. This property can take one of the following values:

This property is read-only.

Data Type

Integer

SSLServerCertSubjectAltNames Property (STOMP Component)

Comma-separated lists of alternative subject names for the certificate.

Syntax

__property String SSLServerCertSubjectAltNames = { read=FSSLServerCertSubjectAltNames };

Default Value

""

Remarks

Comma-separated lists of alternative subject names for the certificate.

This property is read-only.

Data Type

String

SSLServerCertThumbprintMD5 Property (STOMP Component)

The MD5 hash of the certificate.

Syntax

__property String SSLServerCertThumbprintMD5 = { read=FSSLServerCertThumbprintMD5 };

Default Value

""

Remarks

The MD5 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

Data Type

String

SSLServerCertThumbprintSHA1 Property (STOMP Component)

The SHA-1 hash of the certificate.

Syntax

__property String SSLServerCertThumbprintSHA1 = { read=FSSLServerCertThumbprintSHA1 };

Default Value

""

Remarks

The SHA-1 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

Data Type

String

SSLServerCertThumbprintSHA256 Property (STOMP Component)

The SHA-256 hash of the certificate.

Syntax

__property String SSLServerCertThumbprintSHA256 = { read=FSSLServerCertThumbprintSHA256 };

Default Value

""

Remarks

The SHA-256 hash of the certificate. It is primarily used for X.509 certificates. If the hash does not already exist, it is automatically computed.

This property is read-only.

Data Type

String

SSLServerCertUsage Property (STOMP Component)

The text description of UsageFlags .

Syntax

__property String SSLServerCertUsage = { read=FSSLServerCertUsage };

Default Value

""

Remarks

The text description of SSLServerCertUsageFlags.

This value will be one or more of the following strings and will be separated by commas:

• Digital Signature
• Non-Repudiation
• Key Encipherment
• Data Encipherment
• Key Agreement
• Certificate Signing
• CRL Signing
• Encipher Only

If the provider is OpenSSL, the value is a comma-separated list of X.509 certificate extension names.

This property is read-only.

Data Type

String

SSLServerCertUsageFlags Property (STOMP Component)

The flags that show intended use for the certificate.

Syntax

__property int SSLServerCertUsageFlags = { read=FSSLServerCertUsageFlags };

Default Value

0

Remarks

The flags that show intended use for the certificate. The value of SSLServerCertUsageFlags is a combination of the following flags:

Please see the SSLServerCertUsage property for a text representation of SSLServerCertUsageFlags.

This functionality currently is not available when the provider is OpenSSL.

This property is read-only.

Data Type

Integer

SSLServerCertVersion Property (STOMP Component)

The certificate's version number.

Syntax

__property String SSLServerCertVersion = { read=FSSLServerCertVersion };

Default Value

""

Remarks

The certificate's version number. The possible values are the strings "V1", "V2", and "V3".

This property is read-only.

Data Type

String

SSLServerCertSubject Property (STOMP Component)

The subject of the certificate used for client authentication.

Syntax

__property String SSLServerCertSubject = { read=FSSLServerCertSubject };

Default Value

""

Remarks

The subject of the certificate used for client authentication.

This property must be set after all other certificate properties are set. When this property is set, a search is performed in the current certificate store to locate a certificate with a matching subject.

If a matching certificate is found, the property is set to the full subject of the matching certificate.

If an exact match is not found, the store is searched for subjects containing the value of the property.

If a match is still not found, the property is set to an empty string, and no certificate is selected.

The special value "*" picks a random certificate in the certificate store.

The certificate subject is a comma-separated list of distinguished name fields and values. For instance, "CN=www.server.com, OU=test, C=US, E=support@nsoftware.com". Common fields and their meanings are as follows:

If a field value contains a comma, it must be quoted.

This property is read-only.

Data Type

String

SSLServerCertEncoded Property (STOMP Component)

The certificate (PEM/Base64 encoded).

Syntax

__property String SSLServerCertEncoded = { read=FSSLServerCertEncoded };
__property DynamicArray<Byte> SSLServerCertEncodedB = { read=FSSLServerCertEncodedB };

Default Value

""

Remarks

The certificate (PEM/Base64 encoded). This property is used to assign a specific certificate. The SSLServerCertStore and SSLServerCertSubject properties also may be used to specify a certificate.

When SSLServerCertEncoded is set, a search is initiated in the current SSLServerCertStore for the private key of the certificate. If the key is found, SSLServerCertSubject is updated to reflect the full subject of the selected certificate; otherwise, SSLServerCertSubject is set to an empty string.

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

Data Type

Byte Array

SubscriptionCount Property (STOMP Component)

The number of records in the Subscription arrays.

Syntax

__property int SubscriptionCount = { read=FSubscriptionCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• SubscriptionDestination
• SubscriptionId

The array indices start at 0 and end at SubscriptionCount - 1.

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

Data Type

Integer

SubscriptionDestination Property (STOMP Component)

The destination on the server that this subscription is associated with.

Syntax

__property String SubscriptionDestination[int SubscriptionIndex] = { read=FSubscriptionDestination };

Default Value

""

Remarks

The destination on the server that this subscription is associated with.

This property reflects the destination on the server that this subscription is associated with.

The SubscriptionIndex parameter specifies the index of the item in the array. The size of the array is controlled by the SubscriptionCount property.

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

Data Type

String

SubscriptionId Property (STOMP Component)

This subscription's unique Id.

Syntax

__property String SubscriptionId[int SubscriptionIndex] = { read=FSubscriptionId };

Default Value

""

Remarks

This subscription's unique Id.

This property reflects the unique Id of this subscription.

The SubscriptionIndex parameter specifies the index of the item in the array. The size of the array is controlled by the SubscriptionCount property.

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

Data Type

String

Timeout Property (STOMP Component)

This property includes the timeout for the component.

Syntax

__property int Timeout = { read=FTimeout, write=FSetTimeout };

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.

Data Type

Integer

TransactionId Property (STOMP Component)

Specifies the Id of the transaction that outgoing messages are associated with.

Syntax

__property String TransactionId = { read=FTransactionId, write=FSetTransactionId };

Default Value

""

Remarks

This property, if not empty, is used to specify which transaction outgoing messages sent using SendMessage or SendData are associated with.

This property must either be empty, or set to the Id of a currently open transaction. The OpenTransactions configuration setting can be queried at any time to retrieve a comma-separated list of currently open transactions' Ids.

Note that this property only affects outgoing messages. It is also possible to send a message acknowledgment as part of a transaction by setting the AckTransactionId configuration setting during the MessageIn event handler.

Refer to BeginTransaction for more information about transactions.

This property is not available at design time.

Data Type

String

User Property (STOMP Component)

A username if authentication is to be used.

Syntax

__property String User = { read=FUser, write=FSetUser };

Default Value

""

Remarks

If this property is set when connecting, the component will send the user in the login header.

This property is not available at design time.

Data Type

String

AbortTransaction Method (STOMP Component)

Aborts an existing transaction.

Syntax

void __fastcall AbortTransaction(String Id);

Remarks

This method aborts a transaction previously started with BeginTransaction. Id identifies the transaction to abort.

The OpenTransactions configuration setting can be queried to obtain a list of currently-open transactions.

Refer to BeginTransaction for more information about transactions.

AddHeader Method (STOMP Component)

Adds a custom header to send with outgoing messages.

Syntax

void __fastcall AddHeader(String Key, String Value);

Remarks

This method is used to add user-defined headers to the list of headers held by the Headers collection property.

When SendMessage or SendData is called, all headers in the Headers collection property are added to the outgoing message.

Note that the STOMP specification defines a number of standard headers necessary for implementing the STOMP protocol. When constructing an outgoing message, the component silently ignores any user-defined headers that are already set by the component.

BeginTransaction Method (STOMP Component)

Begins a new transaction.

Syntax

void __fastcall BeginTransaction(String Id);

Remarks

This method begins a new transaction using the specified Id, which must be unique. There is no limit to how many transactions may be open at any given time.

A transaction is a group of messages and message acknowledgments which are all processed atomically when the transaction is committed or aborted.

Messages sent in a transaction will not be delivered to clients subscribed to the messages' destinations until the transaction is committed.

Since it is possible for multiple transactions to be open at any given time, the TransactionId property is used to specify which transaction (if any) messages should be sent in. Similarly, message acknowledgments can be sent in a transaction by setting the AckTransactionId configuration setting during the MessageIn event handler.

The OpenTransactions configuration setting can be queried at any time to retrieve a comma-separated list of currently open transactions' Ids.

Basic Transaction Example // Open a new transaction. stomp1.BeginTransaction("txn1"); // Set the Transaction property to make sure that messages are sent as part of the transaction. stomp1.Transaction = "txn1"; stomp1.SendMessage("test/a/b", "Hello, world!"); stomp1.SendMessage("test/a/b", "This is a test."); stomp1.SendMessage("test/a/b", "Another test!"); // At this point, none of the messages sent above would have been delivered to any clients // subscribed to the "test/a/b" destination yet, because the transaction is still open. // If we close and commit the transaction, the server will then deliver the messages to subscribers, // queue them, or process them in another manner; the behavior is server-dependent. stomp1.CommitTransaction("txn1"); // Or, the transaction can be aborted, in which case the server will discard the messages // without delivering them to the subscribers. //stomp1.AbortTransaction("txn1"); // Reset (or change) the Transaction property after committing or aborting a transaction // so that future messages are not associated with the previous transaction. stomp1.Transaction = "";

CommitTransaction Method (STOMP Component)

Commits an existing transaction.

Syntax

void __fastcall CommitTransaction(String Id);

Remarks

This method commits a transaction previously started with BeginTransaction. Id identifies the transaction to commit.

The OpenTransactions configuration setting can be queried to obtain a list of currently-open transactions.

Refer to BeginTransaction for more information about transactions.

Config Method (STOMP Component)

Sets or retrieves a configuration setting.

Syntax

String __fastcall Config(String ConfigurationString);

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 (STOMP Component)

Connects to the remote host.

Syntax

void __fastcall Connect();

Remarks

This method connects to the remote host, specified by RemoteHost and RemotePort. Calling this method is equivalent to setting the Connected property to True.

By default the component will connect in plaintext. To enable SSL set SSLEnabled to True.

When connecting to a STOMP server, the component sends information from the following properties, if populated:

• IncomingHeartbeat
• OutgoingHeartbeat
• User
• Password

In addition to the above properties, the following configuration settings can be set before connecting (though in most cases this is not necessary):

• SupportedVersions: Controls which STOMP versions the component advertises support for.
• VirtualHost: Controls the virtual host to connect to. If left empty (default), the value from RemoteHost is used.

ConnectTo Method (STOMP Component)

Connects to the remote host.

Syntax

void __fastcall ConnectTo(String Host, int Port);

Remarks

This method connects to the remote host specified by the Host and Port parameters. Calling this method is equivalent to setting the RemoteHost property to Host, setting RemotePort to Port, and then setting the Connected property to True.

By default the component will connect in plaintext. To enable SSL set SSLEnabled to True.

When connecting to a STOMP server, the component sends information from the following properties, if populated:

• IncomingHeartbeat
• OutgoingHeartbeat
• User
• Password

In addition to the above properties, the following configuration settings can be set before connecting (though in most cases this is not necessary):

• SupportedVersions: Controls which STOMP versions the component advertises support for.
• VirtualHost: Controls the virtual host to connect to. If left empty (default), the value from RemoteHost is used.

Disconnect Method (STOMP Component)

This method disconnects from the remote host.

Syntax

void __fastcall Disconnect();

Remarks

This method disconnects from the remote host. Calling this method is equivalent to setting the Connected property to False.

DoEvents Method (STOMP Component)

This method processes events from the internal message queue.

Syntax

void __fastcall 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.

Interrupt Method (STOMP Component)

Interrupt the current action and disconnects from the remote host.

Syntax

void __fastcall Interrupt();

Remarks

This method will interrupt the current method (if applicable) and cause the component to disconnect from the remote host.

Reset Method (STOMP Component)

This method will reset the component.

Syntax

void __fastcall Reset();

Remarks

This method will reset the component's properties to their default values.

ResetHeaders Method (STOMP Component)

Clear the user-defined headers collection.

Syntax

void __fastcall ResetHeaders();

Remarks

This method clears the Headers collection property.

SendData Method (STOMP Component)

Publishes a message with a raw data payload.

Syntax

void __fastcall SendData(String Destination, DynamicArray<Byte> Data);

Remarks

This method publishes a STOMP message with a raw data payload to the specified Destination. The MessageOut event will fire after the message has been sent.

The STOMP specification does not place any restrictions on Destination names. Instead, each STOMP server is free to define its own requirements for, and/or interpretations of, a Destination name; for example, a server might prohibit certain characters, require a specific format, or interpret some patterns in a special manner. Be sure to consult the documentation for your STOMP server to determine how to build proper Destination names.

In addition to the payload, the outgoing messages will include:

• All user-defined headers held by the Headers collection property.
• If the TransactionId property is populated, the transaction Id that it specifies (which associates the message with that transaction).

If RequestReceipts is enabled when this method is called, the component will request that the server send back a receipt to confirm it has received the message. Refer to RequestReceipts for more information.

Note that no content type is defined for raw data payload messages; so the ContentType property is ignored by this method.

Send String Message Example stomp1.SendMessage("test/a/b", "Hello, world!");

Send Binary Message Example byte[] fileContent = File.ReadAllBytes("C:\test\stuff.dat"); stomp1.SendData("test/a/b", fileContent);

SendMsg Method (STOMP Component)

Publishes a message with a string payload.

Syntax

void __fastcall SendMsg(String Destination, String Message);

Remarks

Subscribe Method (STOMP Component)

Subscribes to a message destination on the server.

Syntax

String __fastcall Subscribe(String Destination, bool RequireAcks);

Remarks

This method is used to subscribe to the specified message Destination on the server. The Id of the subscription is returned.

Once subscribed, the Subscribed event will fire and an item will be added to the Subscriptions collection property. The MessageIn event will fire anytime a message is received for any subscription.

The STOMP specification does not place any restrictions on Destination names. Instead, each STOMP server is free to define its own requirements for, and/or interpretations of, a Destination name; for example, a server might prohibit certain characters, require a specific format, or interpret some patterns in a special manner. Be sure to consult the documentation for your STOMP server to determine how to build proper Destination names.

If the RequireAcks parameter is set to True, the server will expect the component to send it a message acknowledgment for each message it delivers as part of this subscription. (Refer to the MessageIn event for more information about sending message acknowledgments).

Basic Subscriptions Example stomp1.OnMessageIn += (s, e) => { Console.WriteLine("Received message from destination '" + e.Destination + "':"); Console.WriteLine(e.Data); }; string subId = stomp1.Subscribe("test/a/b", false); // Some time later... stomp1.Unsubscribe(subId);

Unsubscribe Method (STOMP Component)

Removes an existing subscription.

Syntax

void __fastcall Unsubscribe(String Id);

Remarks

This method removes an existing subscription identified by the given Id, unsubscribing the component from the destination associated with the subscription.

Once unsubscribed, the relevant item will be removed from the Subscriptions collection property and the Unsubscribed event will fire.

Basic Subscriptions Example stomp1.OnMessageIn += (s, e) => { Console.WriteLine("Received message from destination '" + e.Destination + "':"); Console.WriteLine(e.Data); }; string subId = stomp1.Subscribe("test/a/b", false); // Some time later... stomp1.Unsubscribe(subId);

Connected Event (STOMP Component)

Fired immediately after a connection completes (or fails).

Syntax

typedef struct {
  int StatusCode;
  String Description;
} TiotSTOMPConnectedEventParams;
typedef void __fastcall (__closure *TiotSTOMPConnectedEvent)(System::TObject* Sender, TiotSTOMPConnectedEventParams *e);
__property TiotSTOMPConnectedEvent OnConnected = { read=FOnConnected, write=FOnConnected };

Remarks

If the connection is made normally, StatusCode is 0 and Description is "OK".

If the connection fails, StatusCode has the error code returned by the Transmission Control Protocol (TCP)/IP stack. Description contains a description of this code. The value of StatusCode is equal to the value of the error.

Please refer to the Error Codes section for more information.

ConnectionStatus Event (STOMP Component)

Fired to indicate changes in the connection state.

Syntax

typedef struct {
  String ConnectionEvent;
  int StatusCode;
  String Description;
} TiotSTOMPConnectionStatusEventParams;
typedef void __fastcall (__closure *TiotSTOMPConnectionStatusEvent)(System::TObject* Sender, TiotSTOMPConnectionStatusEventParams *e);
__property TiotSTOMPConnectionStatusEvent OnConnectionStatus = { read=FOnConnectionStatus, write=FOnConnectionStatus };

Remarks

This 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:

Disconnected Event (STOMP Component)

Fired when a connection is closed.

Syntax

typedef struct {
  int StatusCode;
  String Description;
} TiotSTOMPDisconnectedEventParams;
typedef void __fastcall (__closure *TiotSTOMPDisconnectedEvent)(System::TObject* Sender, TiotSTOMPDisconnectedEventParams *e);
__property TiotSTOMPDisconnectedEvent OnDisconnected = { read=FOnDisconnected, write=FOnDisconnected };

Remarks

If the connection is broken normally, StatusCode is 0 and Description is "OK".

If the connection is broken for any other reason, StatusCode has the error code returned by the Transmission Control Protocol (TCP/IP) subsystem. Description contains a description of this code. The value of StatusCode is equal to the value of the TCP/IP error.

Please refer to the Error Codes section for more information.

Error Event (STOMP Component)

Fired when a component or protocol error occurs.

Syntax

typedef struct {
  int ErrorCode;
  String Description;
  String Data;
  DynamicArray<Byte> DataB;
} TiotSTOMPErrorEventParams;
typedef void __fastcall (__closure *TiotSTOMPErrorEvent)(System::TObject* Sender, TiotSTOMPErrorEventParams *e);
__property TiotSTOMPErrorEvent OnError = { read=FOnError, write=FOnError };

Remarks

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

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

STOMP Protocol Errors

When this occurs, ErrorCode will be 600, Description will reflect the value of the ERROR frame's message header, and Data will contain the body of the ERROR frame (if one is present).

The ErrorHeaders configuration setting will also be populated with the raw headers from the ERROR frame for the duration of the Error event handler.

Log Event (STOMP Component)

Fired once for each log message.

Syntax

typedef struct {
  int LogLevel;
  String Message;
  String LogType;
} TiotSTOMPLogEventParams;
typedef void __fastcall (__closure *TiotSTOMPLogEvent)(System::TObject* Sender, TiotSTOMPLogEventParams *e);
__property TiotSTOMPLogEvent OnLog = { 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 the Message. Possible values are:

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

• Info: General information about the component.
• Acknowledgment: Information about outgoing message acknowledgments.
• Frame: Frame content logging.

MessageIn Event (STOMP Component)

Fired when a message has been received.

Syntax

typedef struct {
  String MessageId;
  String SubscriptionId;
  String Destination;
  String Data;
  DynamicArray<Byte> DataB;
  String ContentType;
  bool Ack;
} TiotSTOMPMessageInEventParams;
typedef void __fastcall (__closure *TiotSTOMPMessageInEvent)(System::TObject* Sender, TiotSTOMPMessageInEventParams *e);
__property TiotSTOMPMessageInEvent OnMessageIn = { read=FOnMessageIn, write=FOnMessageIn };

Remarks

This events fires whenever the component has received a message.

In addition to the message details exposed by the event parameters, the ParsedHeaders collection property is populated with the headers parsed from the message. When the MessageIn event handler exits, the parsed headers are cleared. The following parameters are available within this event:

• MessageId: The unique Id of the message.
• SubscriptionId: The subscription Id the message is associated with.
• Destination: The message destination on the server which the message originated from.
• Data: The message's payload.
• ContentType: The content type of the message (may be empty).
• Ack: Set to True or False to control whether the component should send back a positive (True, default) or negative (False) message acknowledgment.

Message acknowledgments are only sent back to the server for messages which require them. A positive acknowledgment indicates that the message has been accepted, while a negative acknowledgment represents that the message has been rejected.

The following two configuration settings are also relevant in the context of sending back message acknowledgments for incoming messages:

• The AckTransactionId configuration setting, if not empty, specifies a transaction Id to associate the message acknowledgment with. It can only be set during the MessageIn event handler, and will be reset when the event handler ends.
• The RequestAckReceipts configuration setting controls whether the component will request that the server confirm receipt of the message acknowledgment. It is False by default, and can be set at any time.

MessageOut Event (STOMP Component)

Fired after a message has been sent.

Syntax

typedef struct {
  String Destination;
  String Data;
  DynamicArray<Byte> DataB;
  String ContentType;
} TiotSTOMPMessageOutEventParams;
typedef void __fastcall (__closure *TiotSTOMPMessageOutEvent)(System::TObject* Sender, TiotSTOMPMessageOutEventParams *e);
__property TiotSTOMPMessageOutEvent OnMessageOut = { read=FOnMessageOut, write=FOnMessageOut };

Remarks

This event fires after a message has been sent using either SendMessage or SendData. The following parameters are available within this event:

• Destination: The destination the message was sent to.
• Data: The message's payload.
• ContentType: The content type of the message (always empty for messages sent with SendData).

ReadyToSend Event (STOMP Component)

Fired when the component is ready to send data.

Syntax

typedef struct {
} TiotSTOMPReadyToSendEventParams;
typedef void __fastcall (__closure *TiotSTOMPReadyToSendEvent)(System::TObject* Sender, TiotSTOMPReadyToSendEventParams *e);
__property TiotSTOMPReadyToSendEvent OnReadyToSend = { read=FOnReadyToSend, write=FOnReadyToSend };

Remarks

The ReadyToSend event indicates that the underlying TCP/IP subsystem is ready to accept data after a call to SendData or SendMessage fails due to a WOULDBLOCK condition. The event is also fired immediately after a connection to the remote host is established.

ReceiptIn Event (STOMP Component)

Fires when the component receives a receipt from the server.

Syntax

typedef struct {
  String ReceiptId;
} TiotSTOMPReceiptInEventParams;
typedef void __fastcall (__closure *TiotSTOMPReceiptInEvent)(System::TObject* Sender, TiotSTOMPReceiptInEventParams *e);
__property TiotSTOMPReceiptInEvent OnReceiptIn = { read=FOnReceiptIn, write=FOnReceiptIn };

Remarks

This event fires anytime the component receives a receipt (that is, a confirmation that the server has received one or more frames) from the server. The ReceiptId parameter reflects the value of the receipt-id header in the incoming RECEIPT frame.

Note that receipts are cumulative, and a STOMP server is not required to send back discrete receipts for each frame it receives that has a receipt header. For example, if the component has sent four message frames with the following receipt header values (in chronological order):

1. SEND-3
2. SEND-4
3. SEND-5
4. SEND-6

Refer to RequestReceipts for more information about receipts.

ReceiptOut Event (STOMP Component)

Fires when the component sends a STOMP frame that includes a 'receipt' header.

Syntax

typedef struct {
  String ReceiptId;
} TiotSTOMPReceiptOutEventParams;
typedef void __fastcall (__closure *TiotSTOMPReceiptOutEvent)(System::TObject* Sender, TiotSTOMPReceiptOutEventParams *e);
__property TiotSTOMPReceiptOutEvent OnReceiptOut = { read=FOnReceiptOut, write=FOnReceiptOut };

Remarks

This event fires anytime the component sends any STOMP frame that includes a receipt header on it. The ReceiptId parameter reflects the value of the receipt header.

Having a receipt header on an outgoing frame indicates to the server that it should send back a receipt to confirm that it has received the frame (though it is not required to do so immediately; see ReceiptIn for details). Anytime the server sends back a receipt, the ReceiptIn event will fire.

Refer to RequestReceipts for more information about receipts.

SSLServerAuthentication Event (STOMP Component)

Fired after the server presents its certificate to the client.

Syntax

typedef struct {
  String CertEncoded;
  DynamicArray<Byte> CertEncodedB;
  String CertSubject;
  String CertIssuer;
  String Status;
  bool Accept;
} TiotSTOMPSSLServerAuthenticationEventParams;
typedef void __fastcall (__closure *TiotSTOMPSSLServerAuthenticationEvent)(System::TObject* Sender, TiotSTOMPSSLServerAuthenticationEventParams *e);
__property TiotSTOMPSSLServerAuthenticationEvent OnSSLServerAuthentication = { 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 (STOMP Component)

Fired when secure connection progress messages are available.

Syntax

typedef struct {
  String Message;
} TiotSTOMPSSLStatusEventParams;
typedef void __fastcall (__closure *TiotSTOMPSSLStatusEvent)(System::TObject* Sender, TiotSTOMPSSLStatusEventParams *e);
__property TiotSTOMPSSLStatusEvent OnSSLStatus = { read=FOnSSLStatus, write=FOnSSLStatus };

Remarks

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

Subscribed Event (STOMP Component)

Fired when the component has subscribed to a message destination on the server.

Syntax

typedef struct {
  String Id;
  String Destination;
  bool RequireAcks;
} TiotSTOMPSubscribedEventParams;
typedef void __fastcall (__closure *TiotSTOMPSubscribedEvent)(System::TObject* Sender, TiotSTOMPSubscribedEventParams *e);
__property TiotSTOMPSubscribedEvent OnSubscribed = { read=FOnSubscribed, write=FOnSubscribed };

Remarks

This event fires each time the component has subscribed to a message destination on the server. The following parameters are available within this event:

• Id: The Id used to identify the subscription.
• Destination: The message destination on the server which the subscription is associated with.
• RequireAcks: Whether messages the component receives as a result of the subscription will require acknowledgments to be sent back to the server.

Unsubscribed Event (STOMP Component)

Fired when the component has unsubscribed from a message destination on the server.

Syntax

typedef struct {
  String Id;
  String Destination;
} TiotSTOMPUnsubscribedEventParams;
typedef void __fastcall (__closure *TiotSTOMPUnsubscribedEvent)(System::TObject* Sender, TiotSTOMPUnsubscribedEventParams *e);
__property TiotSTOMPUnsubscribedEvent OnUnsubscribed = { read=FOnUnsubscribed, write=FOnUnsubscribed };

Remarks

This event fires each time the component has unsubscribed from a message destination on the server. The following parameters are available within this event:

• Id: The Id that was used to identify the subscription.
• Destination: The message destination on the server which the subscription was associated with.

Config Settings (STOMP Component)

STOMP Config Settings

TCPClient Config Settings

SSL Config Settings

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

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

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

Socket Config Settings

Base Config Settings

Trappable Errors (STOMP Component)

STOMP Errors

TCPClient Errors

SSL Errors

TCP/IP Errors