SMPP Component

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The Smpp Component implements a lightweight message transmission interface using the Short Message Peer-to-Peer protocol, most known for its use in cellular text messaging.

Syntax

TipwSMPP

Remarks

The Smpp component supports both plaintext and Secure Sockets Layer/Transport Layer Security (SSL/TLS) connections. When connecting over SSL/TLS the SSLServerAuthentication event allows you to check the server identity and other security attributes. The SSLStatus event provides information about the SSL handshake. Additional SSL related settings are also supported via the Config method.

The Smpp Component will bind as a transceiver, and thus it can send and receive messages from the server. Additionally, it can send single and multirecipient messages and also can upload data.

Using Smpp is quite easy. First, simply set the SMPPServer, SMPPPort, and, if needed, the SMPPVersion properties. Second, a single call to the Connect method with a specified user Id and password will connect the component.

Transmitting messages is just as easy. You can manipulate the Recipients properties directly, or just use AddRecipient method to add recipients one at a time to the recipient list. After all recipients have been added, a single call to the SendMessage method will transmit the specified message. If the send is successful, the method will set and return the value of the MessageId property. Otherwise, an Error event will fire for each unsuccessful message destination.

The Smpp Component supports message and data transmission, as well as auxiliary operations, such as CheckMessageStatus and ReplaceMessage. All nonimplemented features of the protocol are supported through the SendCommand method and PITrail event. Because of the nature of the protocol, all methods and operations are implemented synchronously.

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 (SMPP Component)

This property indicates whether or not the component is bound.

Syntax

__property bool Connected = { read=FConnected };

Default Value

FALSE

Remarks

The value of this property indicates whether or not the component has successfully bound to the SMPPServer. It will not be true until a successful Connected event has fired.

The two ways to bind are (1) by calling Connect with a user identifier and password, which will set the UserId and Password properties before connecting; or (2) by setting those two properties and calling SendMessage while not connected.

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

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

Data Type

Boolean

FirewallAutoDetect Property (SMPP Component)

This property tells the component whether or not to automatically detect and use firewall system settings, if available.

Syntax

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

Default Value

False

Remarks

This property tells the component whether or not to automatically detect and use firewall system settings, if available.

Data Type

Boolean

FirewallType Property (SMPP Component)

This property determines the type of firewall to connect through.

Syntax

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

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

Default Value

fwNone

Remarks

This property determines the type of firewall to connect through. The applicable values are as follows:

Data Type

Integer

FirewallHost Property (SMPP Component)

This property contains the name or IP address of firewall (optional).

Syntax

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

Default Value

""

Remarks

This property contains the name or IP address of 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 (SMPP Component)

This property contains a password if authentication is to be used when connecting through the firewall.

Syntax

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

Default Value

""

Remarks

This property contains 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 (SMPP Component)

This property contains the transmission control protocol (TCP) port for the firewall Host .

Syntax

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

Default Value

0

Remarks

This property contains 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 (SMPP Component)

This property contains a user name if authentication is to be used connecting through a firewall.

Syntax

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

Default Value

""

Remarks

This property contains a user name if authentication is to be used connecting through a firewall. If the FirewallHost is specified, this property 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

Idle Property (SMPP Component)

The current status of the component.

Syntax

__property bool Idle = { read=FIdle };

Default Value

True

Remarks

Idle will be False if the component is currently busy (communicating and/or waiting for an answer), and True at all other times.

This property is read-only.

Data Type

Boolean

LocalHost Property (SMPP 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

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

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

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 multi-homed hosts (machines with more than one IP interface).

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

Data Type

String

MessageExpiration Property (SMPP Component)

This property denotes the validity period of the current message.

Syntax

__property String MessageExpiration = { read=FMessageExpiration, write=FSetMessageExpiration };

Default Value

""

Remarks

This property indicates the Message Center expiration time, after which the message should be discarded if not delivered to the destination. It can be set using absolute or relative time formats.

Absolute Time Format is a 16-character string represented as "YYMMDDhhmmsstnnp" where:

Relative Time Format is the same 16-character string where "p" should be set to "R" for "relative". For relative time, "tnn" are ignored and thus should be set to a constant value of "000".

Data Type

String

MessageId Property (SMPP Component)

This property indicates the identifier of the most recently sent message.

Syntax

__property String MessageId = { read=FMessageId };

Default Value

""

Remarks

This property indicates the identifier of the most recently sent message. After a successful call to SendMessage, this property will be set to the server-assigned Id for that message.

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

Data Type

String

MessagePriority Property (SMPP Component)

This property indicates the priority level of the current message.

Syntax

__property TipwSMPPMessagePriorities MessagePriority = { read=FMessagePriority, write=FSetMessagePriority };

enum TipwSMPPMessagePriorities {
  smppMessagePriorityLow=0,
  smppMessagePriorityNormal=1,
  smppMessagePriorityHigh=2,
  smppMessagePriorityUrgent=3
};

Default Value

smppMessagePriorityNormal

Remarks

When sending a message, this property will tell the server what type of priority to assign to the message. The effect of the message priority setting depends on the Message Center (MC) manufacturer and the network on which the target recipient lies. For example, some MCs may immediately forward "urgent" messages, some networks may use the priority setting as a visual indicator of the message's urgency (e.g., blinking icons), and some networks may entirely ignore the priority setting.

Data Type

Integer

Password Property (SMPP Component)

This property contains the user's password.

Syntax

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

Default Value

""

Remarks

This property contains the user's password. When binding to the SMPPServer, the client must provide a known user identifier and a valid password for that Id.

The two ways to bind are (1) by calling Connect with a user identifier and password, which will set the UserId and this property before connecting; or (2) by setting those two properties and calling SendMessage while not connected.

Data Type

String

Protocol Property (SMPP Component)

This property defines the SMPP protocol to be used.

Syntax

__property TipwSMPPProtocols Protocol = { read=FProtocol, write=FSetProtocol };

enum TipwSMPPProtocols {
  smppSMPP=0,
  smppCIMD2=1
};

Default Value

smppSMPP

Remarks

This property defines the protocol to be used when connecting to the server. Possible values are as follows:

Data Type

Integer

RecipientCount Property (SMPP Component)

The number of records in the Recipient arrays.

Syntax

__property int RecipientCount = { read=FRecipientCount, write=FSetRecipientCount };

Default Value

0

Remarks

This property controls the size of the following arrays:

• RecipientAddress
• RecipientType

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

This property is not available at design time.

Data Type

Integer

RecipientAddress Property (SMPP Component)

This property contains the email address of a particular recipient.

Syntax

__property String RecipientAddress[int RecipientIndex] = { read=FRecipientAddress, write=FSetRecipientAddress };

Default Value

""

Remarks

This property contains the email address of a particular recipient. This can be used to set single or multiple recipients. The RecipientType contains the corresponding type.

For a recipient type of normal, the value in the RecipientAddress should be either the dotted IPv4 of an SMS-enabled device or the directory number of a target mobile phone. For distributed lists, the value should be the name of the list as it is stored on the SMPPServer.

The RecipientIndex parameter specifies the index of the item in the array. The size of the array is controlled by the RecipientCount property.

This property is not available at design time.

Data Type

String

RecipientType Property (SMPP Component)

This property contains the type of a particular recipient.

Syntax

__property TipwSMPPRecipientTypes RecipientType[int RecipientIndex] = { read=FRecipientType, write=FSetRecipientType };

enum TipwSMPPRecipientTypes {
  smppRecipientTypeNormal=0,
  smppRecipientTypeList=1
};

Default Value

smppRecipientTypeNormal

Remarks

This property contains the type of a particular recipient. This property is used only for multiple recipient messages. The RecipientAddress contains the corresponding recipient's address.

For a recipient type of normal, the value in RecipientAddress should be either the dotted IPv4 of an SMS-enabled device or the directory number of a target mobile phone. For distributed lists, the value should be the name of the list as it is stored on the SMPPServer.

Valid values for RecipientType are as follows:

The RecipientIndex parameter specifies the index of the item in the array. The size of the array is controlled by the RecipientCount property.

This property is not available at design time.

Data Type

Integer

ScheduledDelivery Property (SMPP Component)

This property tells the server when to deliver the current message.

Syntax

__property String ScheduledDelivery = { read=FScheduledDelivery, write=FSetScheduledDelivery };

Default Value

""

Remarks

This property is used by the component when sending a message to inform the Message Center to forward the message to the intended recipients at a specific time. It can be set using absolute or relative time formats.

Absolute Time Format is a 16-character string represented as "YYMMDDhhmmsstnnp" where:

Relative Time Format is the same 16-character string where "p" should be set to "R" for "relative". For relative time, "tnn" are ignored and thus should be set to a constant value of "000".

Data Type

String

SenderAddress Property (SMPP Component)

This property contains the address of the External Short Messaging Entity (ESME).

Syntax

__property String SenderAddress = { read=FSenderAddress, write=FSetSenderAddress };

Default Value

""

Remarks

This property contains the address of the External Short Messaging Entity (ESME). The SMPP protocol allows an ESME to specify its address, whether it is a phone number or an IP address. If this property is not set, the component will default to the value in LocalHost.

Data Type

String

ServiceType Property (SMPP Component)

This property indicates the type of service for the current message.

Syntax

__property TipwSMPPServiceTypes ServiceType = { read=FServiceType, write=FSetServiceType };

enum TipwSMPPServiceTypes {
  smppServiceDefault=0,
  smppServiceCMT=1,
  smppServiceCPT=2,
  smppServiceVMN=3,
  smppServiceVMA=4,
  smppServiceWAP=5,
  smppServiceUSSD=6,
  smppServiceCBS=7
};

Default Value

smppServiceDefault

Remarks

When sending messages, this property is used to define the SMS application service to be associated with the message. The Message Center (MC) will use the value to determine the availability of enhanced messaging services and to control the teleservice used on the air interface.

The values are defined in the SMPP 5.0 specification as follows:

Data Type

Integer

SMPPPort Property (SMPP Component)

This property contains the server port for secure SMPP (default 2775).

Syntax

__property int SMPPPort = { read=FSMPPPort, write=FSetSMPPPort };

Default Value

2775

Remarks

For an implicit Secure Sockets Layer (SSL), use port 3551 (please refer to the SSLStartMode property for more information).

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.

Data Type

Integer

SMPPServer Property (SMPP Component)

This property is the SMPP entity to which the component will connect.

Syntax

__property String SMPPServer = { read=FSMPPServer, write=FSetSMPPServer };

Default Value

""

Remarks

This property is the instant messaging server to which the component will connect when the Connect method is called. This property must contain a valid SMPP service application address.

Data Type

String

SMPPVersion Property (SMPP Component)

This property indicates the SMPP version to be used throughout the connection.

Syntax

__property TipwSMPPSMPPVersions SMPPVersion = { read=FSMPPVersion, write=FSetSMPPVersion };

enum TipwSMPPSMPPVersions {
  smppVersion50=0,
  smppVersion34=1,
  smppVersion33=2
};

Default Value

smppVersion34

Remarks

This property contains the SMPP version to be used throughout the connection.

The default value is version 3.4 because it is the most widely used version of the protocol.

Choosing the highest mutually supported version is generally recommended. Version 3.4 is the default value; however, if version 5.0 is supported, it is recommended.

Data Type

Integer

SSLAcceptServerCertEncoded Property (SMPP Component)

This is the certificate (PEM/base64 encoded).

Syntax

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

Default Value

""

Remarks

This is 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

SSLCertEncoded Property (SMPP Component)

This is the certificate (PEM/base64 encoded).

Syntax

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

Default Value

""

Remarks

This is 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

SSLCertStore Property (SMPP Component)

This is 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

This is 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 are designations of the most common User and Machine certificate stores in Windows:

When the certificate store type is PFXFile, this property must be set to the name of the file. When the type is PFXBlob, the property must be set to the binary contents of a PFX file (i.e. PKCS12 certificate store).

Data Type

Byte Array

SSLCertStorePassword Property (SMPP 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 (SMPP Component)

This is the type of certificate store for this certificate.

Syntax

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

enum TipwSMPPSSLCertStoreTypes {
  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

This is 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

SSLCertSubject Property (SMPP Component)

This is the subject of the certificate used for client authentication.

Syntax

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

Default Value

""

Remarks

This is 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 displayed below.

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

Data Type

String

SSLEnabled Property (SMPP Component)

Whether TLS/SSL is enabled.

Syntax

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

Default Value

False

Remarks

This setting 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 (SMPP Component)

This specifies the SSL/TLS implementation to use.

Syntax

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

enum TipwSMPPSSLProviders {
  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:

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

SSLServerCertEncoded Property (SMPP Component)

This is the certificate (PEM/base64 encoded).

Syntax

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

Default Value

""

Remarks

This is 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

SSLStartMode Property (SMPP Component)

Determines how the component starts the SSL negotiation.

Syntax

__property TipwSMPPSSLStartModes SSLStartMode = { read=FSSLStartMode, write=FSetSSLStartMode };

enum TipwSMPPSSLStartModes {
  sslAutomatic=0,
  sslImplicit=1,
  sslExplicit=2,
  sslNone=3
};

Default Value

sslNone

Remarks

The SSLStartMode property may have one of the following values:

Data Type

Integer

SystemType Property (SMPP Component)

This property contains a string representing the type of system during a connection.

Syntax

__property String SystemType = { read=FSystemType, write=FSetSystemType };

Default Value

""

Remarks

This property contains a string representing the type of system during a connection. Some SMS servers require that a system type be supplied during connection. The system type is a string representation, usually as an abbreviation, of a particular kind of system. The string cannot exceed 12 bytes.

Data Type

String

Timeout Property (SMPP Component)

A 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 will run uninterrupted until successful completion or an error condition is encountered.

If Timeout is set to a positive value, the component will wait for the operation to complete before returning control.

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.

Please note that by default, all timeouts are inactivity timeouts, i.e. 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

UserId Property (SMPP Component)

This property is used for identification with the SMPP service.

Syntax

__property String UserId = { read=FUserId, write=FSetUserId };

Default Value

""

Remarks

This property is used for identification with the SMPP service. When binding to the SMPPServer, the client must provide a known user identifier and a valid password for that Id.

The two ways to bind are (1) by calling Connect with a user Id and password, which will set the UserId and Password properties before connecting; or (2) by setting those two properties and calling SendMessage while not connected.

Data Type

String

AddRecipient Method (SMPP Component)

This method will add a recipient of the specified type to the recipient list.

Syntax

void __fastcall AddRecipient(int RecipientType, String RecipientAddress);

Remarks

This method will add a recipient of the specified type to the recipient list. For normal-type recipients, the addresses should be either a dotted IPv4 address (for sending messages to other SMS-enabled applications) or the directory number of a mobile phone. To send messages to distributed lists, the name of the list should be used.

Valid values for RecipientType are as follows:

CancelMessage Method (SMPP Component)

This method will cancel the specified message.

Syntax

void __fastcall CancelMessage(String MessageId);

Remarks

This method will cancel the message stored on the SMPPServer under the value in MessageId.

CheckLink Method (SMPP Component)

This method will check the connection to the server.

Syntax

void __fastcall CheckLink();

Remarks

This method will check the connection to the server. This method is used to ensure that the host on the other end of the connection is still active, or that it is still available. Although a socket connection may still be available between the client and server, the SMS application on the server may have been taken offline without releasing the socket or the CPU may be bogged down. This method will send a PDU to the server and wait the length of Timeout for a response.

CheckMessageStatus Method (SMPP Component)

This method will retrieve the status of the specified message.

Syntax

void __fastcall CheckMessageStatus(String MessageId);

Remarks

This method will retrieve the last known status of the message stored on the server under MessageId. The component will fire a MessageStatus containing the parsed response from the server.

Config Method (SMPP 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 (SMPP Component)

This method will bind as a transceiver to the SMPP service.

Syntax

void __fastcall Connect();

Remarks

This method will establish a socket connection to the SMPPServer and attempt to bind as a transceiver. Once the bind operation has been completed, a Connected event will be fired containing the status of the connection.

ConnectTo Method (SMPP Component)

This method will bind as a transceiver to the SMPP service.

Syntax

void __fastcall ConnectTo(String UserId, String Password);

Remarks

This method will establish a socket connection to the SMPPServer and attempt to bind as a transceiver. Once the bind operation has completed, a Connected event will be fired containing the status of the connection.

Disconnect Method (SMPP Component)

This method will disconnect from the SMPP service.

Syntax

void __fastcall Disconnect();

Remarks

This method will send an unbind command and close the socket connection to the SMPPServer. After an unbind operation and socket closing, a Disconnected event will be fired containing the status of the unbind operation.

DoEvents Method (SMPP Component)

This method processes events from the internal message queue.

Syntax

void __fastcall DoEvents();

Remarks

When this method 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 (SMPP Component)

Interrupt the current method.

Syntax

void __fastcall Interrupt();

Remarks

If there is no method in progress, Interrupt simply returns, doing nothing.

ReplaceMessage Method (SMPP Component)

This method replaces a previously sent message with a new one.

Syntax

void __fastcall ReplaceMessage(String MessageId, String NewMessage);

Remarks

Assuming that a message on the SMPPServer is being stored under the value in MessageId, this method will replace that message with the value in NewMessage.

If no message corresponds to MessageId, the SMS service will respond with an error message.

Reset Method (SMPP Component)

Reset the component.

Syntax

void __fastcall Reset();

Remarks

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

SendCommand Method (SMPP Component)

This method will format and send a protocol data unit (PDU) using the specified command identifier and payload.

Syntax

DynamicArray<Byte> __fastcall SendCommand(int CommandId, DynamicArray<Byte> Payload);

Remarks

This method offers a way to do more with the component than is directly supported. This method takes a command identifier and a payload, which includes every required and optional field after the header, and creates the 16-byte header for it before sending it to the server. The response PDU is returned both in the PITrail and by this method.

SendData Method (SMPP Component)

This method sends raw data to Recipients .

Syntax

String __fastcall SendData(DynamicArray<Byte> Data);

Remarks

This method sends raw data to Recipients. Up to 64 KB of additional data can be supplied at a time for transmission to the SMPPServer. Unlike the SendMessage method, this method can send to only one destination at a time. The target is whatever value is in the Recipients properties.

SendMsg Method (SMPP Component)

This method sends a message to all recipients in the recipient list.

Syntax

String __fastcall SendMsg(String Message);

Remarks

Connected Event (SMPP Component)

This event is fired after a successful bind operation.

Syntax

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

Remarks

After establishing a socket connection to the SMPPServer, the component will attempt to send a bind as a transmitter command. Upon completion of this operation, the server will respond with either a success or failure state, which will be reflected in the Connected event's parameters.

StatusCode will contain the command status (error code) returned by the server. For a StatusCode of 0, Description will be OK. Otherwise, it will contain a standard interpretation of the error.

ConnectionStatus Event (SMPP Component)

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

Syntax

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

Remarks

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

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

Disconnected Event (SMPP Component)

This event is fired when connection to the SMS service is lost.

Syntax

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

Remarks

After sending an unbind operation to the server, this event will be fired containing the results of that operation. This event may also be fired if the socket connection to the service is lost.

If the event was fired because of an unbind operation, StatusCode will contain the command status set by the server. Otherwise, it will contain the socket code for the type of disconnection. For a status code value of 0, Description will contain OK. Otherwise, it will contain a standard interpretation of the value in StatusCode.

Error Event (SMPP Component)

This event is fired when the server detects an error.

Syntax

typedef struct {
  int ErrorCode;
  String Description;
} TipwSMPPErrorEventParams;
typedef void __fastcall (__closure *TipwSMPPErrorEvent)(System::TObject* Sender, TipwSMPPErrorEventParams *e);
__property TipwSMPPErrorEvent OnError = { read=FOnError, write=FOnError };

Remarks

If the server sends an error not related to a command sent from the component, the component will fire an Error event containing information related to the error.

ErrorCode will contain the code sent by the server, and Description will contain a standard interpretation of that code.

MessageIn Event (SMPP Component)

This event is fired upon receipt of a message.

Syntax

typedef struct {
  String SourceAddress;
  String ScheduleDeliveryTime;
  String ValidityPeriod;
  String Message;
  int MessagePart;
  int MessagePartCount;
  int MessagePartReference;
  String DestinationAddress;
  int ResponseErrorCode;
} TipwSMPPMessageInEventParams;
typedef void __fastcall (__closure *TipwSMPPMessageInEvent)(System::TObject* Sender, TipwSMPPMessageInEventParams *e);
__property TipwSMPPMessageInEvent OnMessageIn = { read=FOnMessageIn, write=FOnMessageIn };

Remarks

When a message is received, the SMPP component will parse the sender's message into the SourceAddress, ScheduleDeliveryTime, ValidityPeriod, and Message fields.

The SourceAddress parameter is the address of the originator of the message.

The DestinationAddress parameter holds the address of the recipient.

The ScheduleDeliveryTime parameter is the delivery time at which the short message is scheduled to be forwarded to another Message Center (MC). This will be an empty string if it is not scheduled.

The ValidityPeriod parameter is applicable only if this short message is being forwarded to another MC. When this occurs, it specifies how long the receiving MC should retain the Short Message (SM) and continue trying to deliver it. This will be an empty string if the current validity period is unavailable.

The Message parameter is the plaintext portion of the message body.

If the incoming message is a part of a larger message (the message was split up into several parts), the MessagePartCount, MessagePart, and MessagePartReference parameters will be set. MessagePartCount will hold the total number of parts for the message. MessagePart will indicate the current part's location in the message to determine the order when reassembling the message. This will be a value from 1 to MessagePartCount. MessagePartReference holds a reference value that will be the same across all parts for the message.

The ResponseErrorCode parameter may be set to return an error condition to the server. This corresponds to the command_status protocol-level field of the response.

MessageStatus Event (SMPP Component)

This event is fired upon receipt of a message.

Syntax

typedef struct {
  String MessageId;
  int MessageState;
  int MessageError;
  String FinalDate;
} TipwSMPPMessageStatusEventParams;
typedef void __fastcall (__closure *TipwSMPPMessageStatusEvent)(System::TObject* Sender, TipwSMPPMessageStatusEventParams *e);
__property TipwSMPPMessageStatusEvent OnMessageStatus = { read=FOnMessageStatus, write=FOnMessageStatus };

Remarks

When a CheckMessageStatus is called, the SMPP component will fetch the status of the message represented by MessageId from the server, parse the response, and fire MessageStatus.

MessageState represents the last known state the message was left in on the SMPPServer. This code is version specific. For v3.4:

MessageError will contain an error code representing any failure encountered during message delivery. This code may be vendor-specific.

FinalDate contains a human-readable string representing the date on which the message was delivered. If the message was not delivered, this parameter will be empty.

PITrail Event (SMPP Component)

This event is fired once for each protocol data unit (PDU) sent between the client and server.

Syntax

typedef struct {
  int Direction;
  String PDU;
  DynamicArray<Byte> PDUB;
  int CommandLength;
  int CommandId;
  String CommandDescription;
  String CommandStatus;
  int SequenceNumber;
} TipwSMPPPITrailEventParams;
typedef void __fastcall (__closure *TipwSMPPPITrailEvent)(System::TObject* Sender, TipwSMPPPITrailEventParams *e);
__property TipwSMPPPITrailEvent OnPITrail = { read=FOnPITrail, write=FOnPITrail };

Remarks

Whenever either the component or the SMPPServer sends any data across the connection, the component will fire a PITrail event containing that data. It will usually be in SMPP-PDU format.

A PDU will contain at least the SMPP header, which is always 16 bytes long. The first four bytes represent the total length of the PDU, including the 16-byte header. The next four bytes are the command Id associated with the PDU. The command Id of a response PDU is always the command Id to which it is responding plus 0x80000000.

The component parses the values contained in the PDU header into the appropriate fields. The CommandLength, CommandId, CommandStatus, and SequenceNumber parameters contain these parsed values.

The third set of four bytes are the command status (status code) of the command. All originating commands will have a status code of 0x00000000, which will be ignored by the receiver. The field is only set in response PDUs to indicate the status of the originating command. The final four bytes represent the sequence number of the command. All response PDUs will contain the same sequence number as the originating command.

ReadyToSend Event (SMPP Component)

This event is fired when the component is ready to send data.

Syntax

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

Remarks

The ReadyToSend event indicates that the underlying Transmission Control Protocol (TCP)/IP subsystem is ready to accept data after a failed DataToSend. This event also is fired immediately after a connection to the remote host is established.

SSLServerAuthentication Event (SMPP 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;
} TipwSMPPSSLServerAuthenticationEventParams;
typedef void __fastcall (__closure *TipwSMPPSSLServerAuthenticationEvent)(System::TObject* Sender, TipwSMPPSSLServerAuthenticationEventParams *e);
__property TipwSMPPSSLServerAuthenticationEvent OnSSLServerAuthentication = { read=FOnSSLServerAuthentication, write=FOnSSLServerAuthentication };

Remarks

This event is where the client can decide whether to continue with the connection process or not. 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 to continue or not.

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 (SMPP Component)

Shows the progress of the secure connection.

Syntax

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

Remarks

The event is fired for informational and logging purposes only. Used to track the progress of the connection.

Config Settings (SMPP Component)

SMPP Config Settings

[UDH1],[MessagePart1];[UDH2],[MessagePart2];[UDH3],[MessagePart3]

TCPClient Config Settings

SSL Config Settings

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

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

Socket Config Settings

Base Config Settings

Trappable Errors (SMPP Component)

SMPP Errors

The component may also return one of the following error codes, which are inherited from other components.

TCPClient Errors

SSL Errors

TCP/IP Errors