SNMPTCPMgr Class

Properties Methods Events Config Settings Errors

The SNMPTCPMgr class is used to implement TCP-based SNMP Management Applications.

Syntax

ipworkssnmp.snmptcpmgr()

Remarks

The SNMPTCPMgr class implements a TCP-based standard SNMP Manager as specified in the SNMP RFCs. The class supports SNMP v1, v2c, and v3.

The class provides both encoding/decoding and transport capabilities, making the task of developing a custom SNMP manager as simple as setting a few key properties and handling a few events. SNMP data, such as for instance SNMP object id-s (OID-s) are exchanged as text strings, thus further simplifying the task of handling them.

The class is activated/deactivated by calling the Activate or Deactivate method. These methods enable or disable sending and receiving. The activation status can be found in the Active property.

Messages are received through events such as Response, Trap, or InformRequest. SNMP Traps are received through the Trap event.

Messages are sent to other agents or managers by using class's methods such as SendGetRequest, SendGetNextRequest, SendGetBulkRequest, SendSetRequest, and SendInformRequest.

SNMP OIDs, types, and values are provided in the Objects collection of SNMP objects for both sent and received packets.

SNMPv3 USM security is enabled by setting properties such as User, AuthenticationPassword, and EncryptionPassword and calling the Discover method to bind to a particular agent (RemoteEngineId). Upon successful discovery, received packets are checked for integrity (authentication) and timeliness. Note that the discovery step is optional, and may be avoided if the values for RemoteEngineId, RemoteEngineBoots, and RemoteEngineTime are known in advance and provided to the class through the respective properties.

By default, the class operates synchronously (except for the Discover method), sending a request and waiting until the corresponding response has been received. This behavior may be overridden by setting Timeout to 0, in which case the class returns control immediately after a send, and responses are received exclusively through the Response event.

Property List

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


AcceptData	Enables or disables data reception.
Active	Indicates whether the class is active.
AuthenticationPassword	The password used for SNMPv3 authentication.
AuthenticationProtocol	The authentication protocol used for SNMPv3 packets.
Community	The community string used to authenticate SNMP packets.
EncryptionAlgorithm	The encryption algorithm used for SNMPv3 packets.
EncryptionPassword	The password used for SNMPv3 privacy.
ErrorDescription	Description of the status code for the last SNMP packet received by the class.
ErrorIndex	Index of the first variable (object) that caused an error from the last SNMP response.
ErrorStatus	Status code for the last SNMP packet received by the class.
LocalEngineId	The Engine Id of the SNMP Manager.
LocalHost	The name of the local host or user-assigned IP interface through which connections are initiated or accepted.
LocalPort	The port in the local host where the SNMP Manager is bound to.
Objects	The objects in the current request.
RemoteEngineBoots	The remote engine boots (SNMPv3).
RemoteEngineId	The Engine Id of the remote agent.
RemoteEngineTime	The remote engine time (SNMPv3).
RemoteHost	The address of the remote host. Domain names are resolved to IP addresses.
RemotePort	The port where the remote SNMP agent is listening.
RequestId	The request-id to mark outgoing packets with.
SNMPVersion	Version of SNMP used for outgoing requests.
SSLAcceptServerCert	Instructs the class to unconditionally accept the server certificate that matches the supplied certificate.
SSLAuthenticateClients	If set to True, the server asks the client(s) for a certificate.
SSLCert	The certificate to be used during SSL negotiation.
SSLEnabled	Whether TLS/SSL is enabled.
SSLServerCert	The server certificate for the last established connection.
StoreWalkObjects	Tells the class whether or not to store returned objects.
Timeout	A timeout for the class.
User	The user name used for SNMPv3 authentication.
WalkLimit	The limit of oid's returned in a walk.

Method List

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


Activate	Activates the class.
Config	Sets or retrieves a configuration setting.
Deactivate	Deactivates the class.
Discover	Performs SNMPv3 discovery.
DoEvents	Processes events from the internal message queue.
HashPasswords	Hashes all passwords in the cache.
Interrupt	Interrupt the current method.
Reset	Clears the object arrays.
SendGetBulkRequest	Send a GetBulkRequest packet.
SendGetNextRequest	Send GetNextRequest packet.
SendGetRequest	Send GetRequest packet.
SendInformRequest	Send an InformRequest packet.
SendSetRequest	Send Set Request packet.
Value	Returns the value corresponding to an OID.
Walk	Does an SNMP walk starting with the specified oid.

Event List

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


BadPacket	Fired for erroneous and/or malformed messages.
Connected	Fired immediately after a connection completes (or fails).
ConnectionStatus	This event is fired to indicate changes in the connection state.
Disconnected	Fired when a connection is closed.
DiscoveryRequest	Fired when an SNMPv3 discovery packet is received.
DiscoveryResponse	Fired when an SNMPv3 discovery response is received.
Error	Fired when information is available about errors during data delivery.
HashPassword	Fired before and after a password is hashed.
InformRequest	Fired when an InformRequest packet is received.
PacketTrace	Fired for every packet sent or received.
ReadyToSend	Fired when the class is ready to send data.
Report	Fired when a Report packet is received.
Response	Fired when a GetResponse packet is received.
SSLClientAuthentication	Fired when the client presents its credentials to the server.
SSLServerAuthentication	Fires when connecting to the server.
SSLStatus	Shows the progress of the secure connection.
Trap	Fired when a SNMP trap packet is received.

Config Settings

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


CheckMessageOrigin	Whether to match the origin IP address when receiving responses.
CompatibilityMode	Whether to operate the class in a specific compatibility mode.
ContextEngineId	Sets the context engine id of the SNMP entity.
ContextName	Sets the context name of the SNMP entity.
DecryptLogPackets	Whether to decrypt logged packets.
ForceLocalPort	Forces the class to bind to a specific port.
IncomingContextEngineId	The engine Id of the received packet.
IncomingContextName	The context name of the received packet.
MsgMaxSize	The maximum supported message size.
SourceAddress	The source address of the received packet.
SourcePort	The source port of the received packet.
TimeoutInMilliseconds	The timeout is treated as milliseconds.
WalkInsideRange	Stops the SNMP walk if the OID value returned from an agent is outside the table.
WalkStartOID	Specifies the OID to be used when a Walk is performed.
ConnectionTimeout	Sets a separate timeout value for establishing a connection.
FirewallAutoDetect	Tells the class whether or not to automatically detect and use firewall system settings, if available.
FirewallHost	Name or IP address of firewall (optional).
FirewallPassword	Password to be used if authentication is to be used when connecting through the firewall.
FirewallPort	The TCP port for the FirewallHost;.
FirewallType	Determines the type of firewall to connect through.
FirewallUser	A user name if authentication is to be used connecting through a firewall.
KeepAliveInterval	The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.
KeepAliveTime	The inactivity time in milliseconds before a TCP keep-alive packet is sent.
Linger	When set to True, connections are terminated gracefully.
LingerTime	Time in seconds to have the connection linger.
LocalHost	The name of the local host through which connections are initiated or accepted.
LocalPort	The port in the local host where the class binds.
MaxLineLength	The maximum amount of data to accumulate when no EOL is found.
MaxTransferRate	The transfer rate limit in bytes per second.
ProxyExceptionsList	A semicolon separated list of hosts and IPs to bypass when using a proxy.
TCPKeepAlive	Determines whether or not the keep alive socket option is enabled.
TcpNoDelay	Whether or not to delay when sending packets.
UseIPv6	Whether to use IPv6.
LogSSLPackets	Controls whether SSL packets are logged when using the internal security API.
OpenSSLCADir	The path to a directory containing CA certificates.
OpenSSLCAFile	Name of the file containing the list of CA's trusted by your application.
OpenSSLCipherList	A string that controls the ciphers to be used by SSL.
OpenSSLPrngSeedData	The data to seed the pseudo random number generator (PRNG).
ReuseSSLSession	Determines if the SSL session is reused.
SSLAcceptAnyServerCert	Whether to trust any certificate presented by the server.
SSLCACerts	A newline separated list of CA certificate to use during SSL client authentication.
SSLCipherStrength	The minimum cipher strength used for bulk encryption.
SSLEnabledCipherSuites	The cipher suite to be used in an SSL negotiation.
SSLEnabledProtocols	Used to enable/disable the supported security protocols.
SSLEnableRenegotiation	Whether the renegotiation_info SSL extension is supported.
SSLIncludeCertChain	Whether the entire certificate chain is included in the SSLServerAuthentication event.
SSLKeyLogFile	The location of a file where per-session secrets are written for debugging purposes.
SSLNegotiatedCipher	Returns the negotiated cipher suite.
SSLNegotiatedCipherStrength	Returns the negotiated cipher suite strength.
SSLNegotiatedCipherSuite	Returns the negotiated cipher suite.
SSLNegotiatedKeyExchange	Returns the negotiated key exchange algorithm.
SSLNegotiatedKeyExchangeStrength	Returns the negotiated key exchange algorithm strength.
SSLNegotiatedVersion	Returns the negotiated protocol version.
SSLSecurityFlags	Flags that control certificate verification.
SSLServerCACerts	A newline separated list of CA certificate to use during SSL server certificate validation.
TLS12SignatureAlgorithms	Defines the allowed TLS 1.2 signature algorithms when SSLProvider is set to Internal.
TLS12SupportedGroups	The supported groups for ECC.
TLS13KeyShareGroups	The groups for which to pregenerate key shares.
TLS13SignatureAlgorithms	The allowed certificate signature algorithms.
TLS13SupportedGroups	The supported groups for (EC)DHE key exchange.
AbsoluteTimeout	Determines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallData	Used to send extra data to the firewall.
InBufferSize	The size in bytes of the incoming queue of the socket.
OutBufferSize	The size in bytes of the outgoing queue of the socket.
BuildInfo	Information about the product's build.
CodePage	The system code page used for Unicode to Multibyte translations.
LicenseInfo	Information about the current license.
MaskSensitive	Whether sensitive data is masked in log messages.
UseInternalSecurityAPI	Whether or not to use the system security libraries or an internal implementation.

SNMPTCPMgr.AcceptData Property

Enables or disables data reception.

Syntax

isAcceptData(): boolean;
setAcceptData(acceptData: boolean): void;

Default Value

TRUE

Remarks

Setting the property to False temporarily disables data reception. Setting the property to True re-enables data reception.

This property is not available at design time.

SNMPTCPMgr.Active Property

Indicates whether the class is active.

Syntax

isActive(): boolean;

Default Value

FALSE

Remarks

This property indicates whether the class is currently active and can send or receive data.

The class will be automatically activated if it is not already and you attempt to perform an operation which requires the class to be active.

Note: Use the Activate or Deactivate method to control whether the class is active.

This property is not available at design time.

SNMPTCPMgr.AuthenticationPassword Property

The password used for SNMPv3 authentication.

Syntax

getAuthenticationPassword(): string;
setAuthenticationPassword(authenticationPassword: string): void;

Default Value

Remarks

Every time EncryptionPassword, AuthenticationPassword, or RemoteEngineId are set, a localized key is computed automatically, and cached internally.

SNMPTCPMgr.AuthenticationProtocol Property

The authentication protocol used for SNMPv3 packets.

Syntax

getAuthenticationProtocol(): SnmptcpmgrAuthenticationProtocols;
setAuthenticationProtocol(authenticationProtocol: SnmptcpmgrAuthenticationProtocols): void;

enum SnmptcpmgrAuthenticationProtocols {
  authpHMACMD596,
  authpHMACSHA96,
  authpHMAC192SHA256,
  authpHMAC384SHA512
}

Default Value

Remarks

This property defines the authentication protocol used when SNMPVersion is set to snmpverV3. Possible values are:

1 (HMAC-MD5-96 - default)
2 (HMAC-SHA-96)
3 (HMAC-192-SHA-256)
4 (HMAC-384-SHA-512)

This property is not available at design time.

SNMPTCPMgr.Community Property

The community string used to authenticate SNMP packets.

Syntax

getCommunity(): string;
setCommunity(community: string): void;

Default Value

"public"

Remarks

Must match the community name that is specified on the agent.

Typical values are "public" or "private".

This property is used for all SNMP packets sent by the class.

SNMPTCPMgr.EncryptionAlgorithm Property

The encryption algorithm used for SNMPv3 packets.

Syntax

getEncryptionAlgorithm(): SnmptcpmgrEncryptionAlgorithms;
setEncryptionAlgorithm(encryptionAlgorithm: SnmptcpmgrEncryptionAlgorithms): void;

enum SnmptcpmgrEncryptionAlgorithms {
  encraDES,
  encraAES,
  encra3DES,
  encraAES192,
  encraAES256
}

Default Value

Remarks

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


DES (1)	Data Encryption Standard.
AES (2)	Advanced Encryption Standard with key length of 128.
3DES (3)	Triple Data Encryption Standard.
AES192 (4)	Advanced Encryption Standard with key length of 192.
AES256 (5)	Advanced Encryption Standard with key length of 256.

This property is not available at design time.

SNMPTCPMgr.EncryptionPassword Property

The password used for SNMPv3 privacy.

Syntax

getEncryptionPassword(): string;
setEncryptionPassword(encryptionPassword: string): void;

Default Value

Remarks

Every time EncryptionPassword, AuthenticationPassword, or RemoteEngineId are set, a localized key is computed automatically, and cached internally.

SNMPTCPMgr.ErrorDescription Property

Description of the status code for the last SNMP packet received by the class.

Syntax

getErrorDescription(): string;

Default Value

"0"

Remarks

Please refer to the ErrorStatus property for more information.

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

SNMPTCPMgr.ErrorIndex Property

Index of the first variable (object) that caused an error from the last SNMP response.

Syntax

getErrorIndex(): number;

Default Value

Remarks

This property is used in conjunction with the ErrorStatus property, and refers to the object that caused the error reported in the last SNMP response. This value is parsed directly from the SNMP response, which will be a one-based value, so a value of i here maps to index i-1 in the Objects collection.

The ErrorIndex property has no meaning when the ErrorStatus property is 0 (no error).

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

SNMPTCPMgr.ErrorStatus Property

Status code for the last SNMP packet received by the class.

Syntax

getErrorStatus(): number;

Default Value

Remarks

This property is used in conjunction with the ErrorIndex property, which denotes the index of the variable in error. The ErrorDescription property provides a textual description of the error.

The following is a list of valid SNMP status code values:


0 (noError)	No error.
1 (tooBig)	The response cannot fit in a single SNMP message.
2 (noSuchName)	Variable does not exist.
3 (badValue)	Invalid value or syntax.
4 (readOnly)	Variable is read-only.
5 (genError)	Other error (SNMPv1).
6 (noAccess)	Access denied.
7 (wrongType)	Wrong object type.
8 (wrongLength)	Wrong length.
9 (wrongEncoding)	Wrong encoding.
10 (wrongValue)	Wrong value.
11 (noCreation)	No creation.
12 (inconsistentValue)	Inconsistent value.
13 (resourceUnavailable)	Resource unavailable.
14 (commitFailed)	Commit failed.
15 (undoFailed)	Undo failed.
16 (authorizationError)	Authorization error.
17 (notWritable)	Variable is not writable.
18 (inconsistentName)	Inconsistent name.

The ErrorIndex parameter indicates the index of the first variable (object) that caused an error. The default value is 0.

Variable indexes start with 0. ErrorIndex has no meaning when ErrorStatus is 0 (no error).

The default value is 0 (no error).

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

SNMPTCPMgr.LocalEngineId Property

The Engine Id of the SNMP Manager.

Syntax

getLocalEngineId(): Uint8Array;
setLocalEngineId(localEngineId: Uint8Array): void;

Default Value

Remarks

This property is only used for SNMPv3 packets (when SNMPVersion is 3).

SNMPTCPMgr.LocalHost Property

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

Syntax

getLocalHost(): string;
setLocalHost(localHost: string): void;

Default Value

Remarks

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

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

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

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

SNMPTCPMgr.LocalPort Property

The port in the local host where the SNMP Manager is bound to.

Syntax

getLocalPort(): number;
setLocalPort(localPort: number): void;

Default Value

Remarks

The LocalPort property must be set before the class is activated (Active is set to True). It instructs the class to bind to a specific port (or communication endpoint) in the local machine. The default port is 0 (random port). If you would like to receive traps, set LocalPort to 162 (standard trap port). However, it is recommended that the SNMPTrapMgr class be used for listening to traps, because SNMPMgr is limited to receiving SNMPv3 traps from a single agent only. SNMPTrapMgr does not have this limitation.

LocalPort cannot be changed once the class is Active. Any attempt to set the LocalPort property when the class is Active will generate an error.

Note: on macOS and iOS, root permissions are required to set LocalPort to any value below 1024.

SNMPTCPMgr.Objects Property

The objects in the current request.

Syntax

getObjects(): SNMPObjectList;
setObjects(objects: SNMPObjectList): void;

Default Value

Remarks

The SNMP objects being sent or received in the current request. The collection is first cleared, then populated every time an SNMP packet is received. It is also used to create outgoing SNMP packets.

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

SNMPTCPMgr.RemoteEngineBoots Property

The remote engine boots (SNMPv3).

Syntax

getRemoteEngineBoots(): number;
setRemoteEngineBoots(remoteEngineBoots: number): void;

Default Value

Remarks

This property is used in conjunction with the RemoteEngineTime property. Please refer to the description of the RemoteEngineTime property, and the Discover method for further information.

SNMPTCPMgr.RemoteEngineId Property

The Engine Id of the remote agent.

Syntax

getRemoteEngineId(): Uint8Array;
setRemoteEngineId(remoteEngineId: Uint8Array): void;

Default Value

Remarks

This property is only used for SNMPv3 packets (see SNMPVersion), and is reset every time RemoteHost or RemotePort changes.

RemoteEngineId is normally discovered through the Discover method. However, by manually supplying a value for the property, RemoteEngineId discovery step may be eliminated, thus avoiding the extra roundtrip to the agent (RemoteEngineBoots and RemoteEngineTime are also required for User authentication - please refer to the Discover method for more information).

SNMPTCPMgr.RemoteEngineTime Property

The remote engine time (SNMPv3).

Syntax

getRemoteEngineTime(): number;
setRemoteEngineTime(remoteEngineTime: number): void;

Default Value

Remarks

RemoteEngineTime is used by SNMPv3 authentication to ensure timeliness of requests, and avoid replay attacks.

The value of RemoteEngineTime is provided as what is expected to be the current value of the remote engine clock based on a cached time differential between the remote engine clock and the local engine time obtained during the discovery process (see Discover).

This property is used in conjunction with RemoteEngineBoots. Please refer to the RemoteEngineBoots property and the Discover method for more information.

SNMPTCPMgr.RemoteHost Property

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

Syntax

getRemoteHost(): string;
async setRemoteHost(remoteHost: string): Promise<void>;

Default Value

Remarks

The RemoteHost property specifies the IP address (IP number in dotted internet format) or Domain Name of the host SNMP requests or traps are sent to.

If RemoteHost is set to 255.255.255.255, the class broadcasts data on the local subnet.

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

SNMPTCPMgr.RemotePort Property

The port where the remote SNMP agent is listening.

Syntax

getRemotePort(): number;
setRemotePort(remotePort: number): void;

Default Value

161

Remarks

The RemotePort is the port on the RemoteHost to send SNMP requests to.

A valid port number (a value between 1 and 65535) is required. The default value is 161.

SNMPTCPMgr.RequestId Property

The request-id to mark outgoing packets with.

Syntax

getRequestId(): number;
setRequestId(requestId: number): void;

Default Value

Remarks

If a custom value is needed for RequestId, the property must be set before sending the request. The class increments RequestId automatically after sending each packet.

This property is not available at design time.

SNMPTCPMgr.SNMPVersion Property

Version of SNMP used for outgoing requests.

Syntax

getSNMPVersion(): SnmptcpmgrSNMPVersions;
setSNMPVersion(SNMPVersion: SnmptcpmgrSNMPVersions): void;

enum SnmptcpmgrSNMPVersions {
  snmpverV1,
  snmpverV2c,
  snmpverV3
}

Default Value

Remarks

This property takes one of the following values:


snmpverV1 (1)	SNMP Version 1.
snmpverV2c (2)	SNMP Version 2c.
snmpverV3 (3)	SNMP Version 3.

SNMPTCPMgr.SSLAcceptServerCert Property

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

Syntax

getSSLAcceptServerCert(): Certificate;
setSSLAcceptServerCert(SSLAcceptServerCert: Certificate): void;

Default Value

Remarks

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

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

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

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

SNMPTCPMgr.SSLAuthenticateClients Property

If set to True, the server asks the client(s) for a certificate.

Syntax

isSSLAuthenticateClients(): boolean;
setSSLAuthenticateClients(SSLAuthenticateClients: boolean): void;

Default Value

FALSE

Remarks

This property is used in conjunction with the SSLClientAuthentication event. Please refer to the documentation of the SSLClientAuthentication event for details.

SNMPTCPMgr.SSLCert Property

The certificate to be used during SSL negotiation.

Syntax

getSSLCert(): Certificate;
setSSLCert(SSLCert: Certificate): void;

Default Value

Remarks

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

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

SNMPTCPMgr.SSLEnabled Property

Whether TLS/SSL is enabled.

Syntax

isSSLEnabled(): boolean;
setSSLEnabled(SSLEnabled: boolean): void;

Default Value

FALSE

Remarks

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

Note: SSL is not currently supported in this product. This setting is reserved for future user.

This property is not available at design time.

SNMPTCPMgr.SSLServerCert Property

The server certificate for the last established connection.

Syntax

getSSLServerCert(): Certificate;

Default Value

Remarks

SSLServerCert contains the server certificate for the last established connection.

SSLServerCert is reset every time a new connection is attempted.

This property is read-only.

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

SNMPTCPMgr.StoreWalkObjects Property

Tells the class whether or not to store returned objects.

Syntax

isStoreWalkObjects(): boolean;
setStoreWalkObjects(storeWalkObjects: boolean): void;

Default Value

TRUE

Remarks

When a Walk is performed, this property tells the class whether or not to store the objects that are returned by the server in the Objects collection. If the data is accumulated through the events, and not desired to be saved by the class, set this property to false.

SNMPTCPMgr.Timeout Property

A timeout for the class.

Syntax

getTimeout(): number;
setTimeout(timeout: number): void;

Default Value

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 class will wait for the operation to complete before returning control. The class will handle any potential WOULDBLOCK errors internally and automatically retry the operation for a maximum of Timeout seconds.

The class 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 class .

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.

SNMPTCPMgr.User Property

The user name used for SNMPv3 authentication.

Syntax

getUser(): string;
setUser(user: string): void;

Default Value

Remarks

If authentication is desired, this property must be set before the class attempts to connect to an SNMPv3 Agent.

SNMPTCPMgr.WalkLimit Property

The limit of oid's returned in a walk.

Syntax

getWalkLimit(): number;
setWalkLimit(walkLimit: number): void;

Default Value

Remarks

This property specifies the limit of how many oid's are to be traversed during an SNMP Walk. If set to 0, the class will traverse all oid's in the specified table that are lexographically greater than the value of the specified table oid.

SNMPTCPMgr.activate Method

Activates the class.

Syntax

async snmptcpmgr.activate(): Promise<void>

Remarks

This method activates the component and will allow it to send or receive data.

The class will be automatically activated if it is not already and you attempt to perform an operation which requires the class to be active.

Note: Use the Active property to check whether the component is active.

SNMPTCPMgr.config Method

Sets or retrieves a configuration setting.

Syntax

async snmptcpmgr.config(configurationString : string): Promise<string>

Remarks

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

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

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

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

SNMPTCPMgr.deactivate Method

Deactivates the class.

Syntax

async snmptcpmgr.deactivate(): Promise<void>

Remarks

This method deactivates the component and will prohibit it from sending and receiving data.

Note: Use the Active property to check whether the component is active.

SNMPTCPMgr.discover Method

Performs SNMPv3 discovery.

Syntax

async snmptcpmgr.discover(): Promise<void>

Remarks

When the method is called an SNMPv3 engine discovery request is sent to RemoteHost.

If an AuthenticationPassword is provided, the engine id discovery request is followed by an engine time discovery request, as required by the SNMPv3 User Security Model (USM). In this case Timeout must be set to a non-zero value before calling Discover and the class will wait until a response is received from RemoteHost.

The DiscoveryResponse event is fired upon receipt of a valid discovery response and the values of RemoteEngineId, RemoteEngineBoots, and RemoteEngineTime will then be updated with the received Engine Id, Time, and Boots.

SNMPTCPMgr.doEvents Method

Processes events from the internal message queue.

Syntax

async snmptcpmgr.doEvents(): Promise<void>

Remarks

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

SNMPTCPMgr.hashPasswords Method

Hashes all passwords in the cache.

Syntax

async snmptcpmgr.hashPasswords(): Promise<void>

Remarks

Forces computation of all passwords hashes in the cache. Used together with the HashPassword event to enable implementations of external password hash storage.

SNMPTCPMgr.interrupt Method

Interrupt the current method.

Syntax

async snmptcpmgr.interrupt(): Promise<void>

Remarks

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

SNMPTCPMgr.reset Method

Clears the object arrays.

Syntax

async snmptcpmgr.reset(): Promise<void>

Remarks

Clears the object arrays, and sets the trap and error properties to their default values. This is useful for reinitializing all the properties that are used to create outgoing packets before building a new packet.

Note: SNMPVersion will be reset to snmpverV2c (2).

SNMPTCPMgr.sendGetBulkRequest Method

Send a GetBulkRequest packet.

Syntax

async snmptcpmgr.sendGetBulkRequest(nonRepeaters : number, maxRepetitions : number): Promise<void>

Remarks

Sends a GetBulkRequest packet. This is only available for SNMP versions 2 and 3.

NonRepeaters specifies the number of variables for which a single lexicographic successor is to be returned.

MaxRepetitions specifies the number of lexicographic successors to be returned for variables other than those in the NonRepeaters list.

The object identifiers, types, and values for the request are taken from the Objects collection.

A GetBulkRequest is very similar to a GetNextRequest, the difference is that Getbulk performs a continuous GetNext operation based on the MaxRepitions value. The NonRepeaters value will determine the number of Objects for which a simple GetNext operation should be performed. For the remaining variables, a continuous GetNext operation is performed based on the MaxRepitions value.

So if you send a request containing X objects, the agent will perform N simple GetNext operations and M continuous GetNext operations X - N times. With X being the number of objects received, N being the number of NonRepeaters, and M being the number of MaxRepitions. Thus the SNMPMgr is expecting to receive N + M x (X - N) objects, assuming that each object has M successors.

Example (Sending a GetBulk Request)

SNMPControl.RemoteHost = "MyAgent" SNMPControl.ObjCount = 2 SNMPControl.ObjId(0) = "1.3.6.1.2.1.1.1.0" SNMPControl.objId(1) = "1.3.6.1.2.1.1.3.0" SNMPControl.SendGetBulkRequest(1,4)

The code sample above will send a GetBulkRequest with 1 non repeater, and a maxrepetitions of 4. Since there is only 1 non repeater, only one ObjID will "not repeat" and will only return one successor. The rest of the ObjID's (in this case, only 1) will return 4 successors. This particular example will return the following ObjID's:


1	1.3.6.1.2.1.1.2.0
2	1.3.6.1.2.1.1.4.0
3	1.3.6.1.2.1.1.5.0
4	1.3.6.1.2.1.1.6.0
5	1.3.6.1.2.1.1.7.0

SNMPTCPMgr.sendGetNextRequest Method

Send GetNextRequest packet.

Syntax

async snmptcpmgr.sendGetNextRequest(): Promise<void>

Remarks

Sends a GetNextRequest packet. The object identifiers, types, and values for the request are taken from the Objects collection.

Example (Sending a GetNext Request)

SNMPControl.ObjCount = 2 SNMPControl.ObjId(0) = "1.3.6.1.2.1.1.1.0" SNMPControl.SendGetNextRequest() The agent will respond with the "next" (relative to the ObjID(s) you specify) OID in the table.

SNMPTCPMgr.sendGetRequest Method

Send GetRequest packet.

Syntax

async snmptcpmgr.sendGetRequest(): Promise<void>

Remarks

Sends a GetRequest packet. The object identifiers, types, and values for the request are taken from the Objects collection.

Example (Sending a GetRequest)

SNMPControl.RemoteHost = "MyAgent" SNMPControl.ObjCount = 2 SNMPControl.ObjId(0) = "1.3.6.1.2.1.1.1.0" SNMPControl.ObjId(1) = "1.3.6.1.2.1.1.2.0" SNMPControl.SendGetRequest()

SNMPTCPMgr.sendInformRequest Method

Send an InformRequest packet.

Syntax

async snmptcpmgr.sendInformRequest(): Promise<void>

Remarks

Sends an InformRequest packet. The object identifiers, types, and values for the request are taken from the Objects collection.

SNMPTCPMgr.sendSetRequest Method

Send Set Request packet.

Syntax

async snmptcpmgr.sendSetRequest(): Promise<void>

Remarks

Sends a SetRequest packet. The object identifiers, types, and values for the request are taken from the Objects collection.

Example (Sending a SetRequest)

SNMPControl.RemoteHost = "MyAgent" SNMPControl.ObjCount = 1 SNMPControl.ObjId(0) = "1.3.6.1.2.1.1.1.0" SNMPControl.ObjValue(0) = "New Value" SNMPControl.ObjType(0) = otOctetString SNMPControl.SendSetRequest()

SNMPTCPMgr.value Method

Returns the value corresponding to an OID.

Syntax

async snmptcpmgr.value(OID : string): Promise<string>

Remarks

If the OID does not exist in the Objects collection, a trappable error is generated.

Please refer to the SNMPObject type for more information.

SNMPTCPMgr.walk Method

Does an SNMP walk starting with the specified oid.

Syntax

async snmptcpmgr.walk(tableOid : string): Promise<void>

Remarks

A walk will traverse all OIDs in the TableOid that are lexographically greater than the value of the TableOid.

The results of the walk may be obtained through the Response events. During the event, the current returned object will exist inside of the Objects collection. If StoreWalkObjects is set to true, the Objects collection will contain all returned objects when the Walk completes.

Use the WalkLimit property to regulate how many objects the walk will traverse in the table.

NOTE: The collection of objects is cleared before the walk begins.

SNMPTCPMgr.BadPacket Event

Fired for erroneous and/or malformed messages.

Syntax

snmptcpmgr.on('BadPacket', listener: (e: {readonly packet: string, readonly packetB: Uint8Array, readonly sourceAddress: string, readonly sourcePort: number, readonly errorCode: number, readonly errorDescription: string, report: boolean}) => void )

Remarks

The full message is provided in the Packet parameter.

The BadPacket event is also fired when authentication fails for received packets due to a bad password or other reasons.

If the Report parameter is set to True, an unauthenticated error report will be sent to the client, otherwise the packet will be silently ignored.

SNMPTCPMgr.Connected Event

Fired immediately after a connection completes (or fails).

Syntax

snmptcpmgr.on('Connected', listener: (e: {readonly remoteAddress: string, readonly remotePort: number, readonly statusCode: number, readonly description: string}) => void )

Remarks

This event fires after a connection completes or fails.

StatusCode is the value returned by the system TCP/IP stack. This will be 0 if the connection was successful.

Description contains a human readable description of the status. This will be "OK" if the connection was successful.

RemoteAddress is the IP address of the remote host.

RemotePort is the port on the remote host.

SNMPTCPMgr.ConnectionStatus Event

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

Syntax

snmptcpmgr.on('ConnectionStatus', listener: (e: {readonly connectionEvent: string, readonly statusCode: number, readonly description: string}) => void )

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:


	Firewall connection complete.
	Secure Sockets Layer (SSL) or S/Shell handshake complete (where applicable).
	Remote host connection complete.
	Remote host disconnected.
	SSL or S/Shell connection broken.
	Firewall host disconnected.

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.

SNMPTCPMgr.Disconnected Event

Fired when a connection is closed.

Syntax

snmptcpmgr.on('Disconnected', listener: (e: {readonly remoteAddress: string, readonly remotePort: number, readonly statusCode: number, readonly description: string}) => void )

Remarks

This event fires after a connection is broken.

StatusCode is the value returned by the system TCP/IP stack. This will be 0 if the connection was broken normally.

Description contains a human readable description of the status. This will be "OK" if the connection was broken normally.

RemoteAddress is the IP address of the remote host.

RemotePort is the port on the remote host.

SNMPTCPMgr.DiscoveryRequest Event

Fired when an SNMPv3 discovery packet is received.

Syntax

snmptcpmgr.on('DiscoveryRequest', listener: (e: {readonly engineId: string, readonly engineIdB: Uint8Array, readonly engineBoots: number, readonly engineTime: number, readonly user: string, readonly securityLevel: number, readonly sourceAddress: string, readonly sourcePort: number, respond: boolean}) => void )

Remarks

EngineId, EngineBoots, EngineTime, and User are the values received from SourceAddress.

For SNMPv3, the User parameter shows the user that was supplied with the packet. This parameter MUST be used together with the SecurityLevel parameter which shows the level of security in the message.

The SecurityLevel parameter shows whether the request has been authenticated. If SecurityLevel is 0, the request has NOT been authenticated (i.e. the packet signature has not been verified). For an authenticated, non encrypted request, SecurityLevel is 1. For an authenticated and encrypted request, SecurityLevel is 2.

Respond is True by default, and will automatically send a response using the value in LocalEngineId. To suppress the response, set Respond to False.

The value returned to SourceAddress for EngineBoots is always 0, and EngineTime is the number of seconds since January 1st, 1970 (GMT).

SNMPTCPMgr.DiscoveryResponse Event

Fired when an SNMPv3 discovery response is received.

Syntax

snmptcpmgr.on('DiscoveryResponse', listener: (e: {readonly engineId: string, readonly engineIdB: Uint8Array, readonly engineBoots: number, readonly engineTime: number, readonly user: string, readonly securityLevel: number, readonly sourceAddress: string, readonly sourcePort: number}) => void )

Remarks

EngineId, EngineBoots, EngineTime, and User are the values received from SourceAddress and SourcePort.

SNMPTCPMgr.Error Event

Fired when information is available about errors during data delivery.

Syntax

snmptcpmgr.on('Error', listener: (e: {readonly errorCode: number, readonly description: string}) => void )

Remarks

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

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

SNMPTCPMgr.HashPassword Event

Fired before and after a password is hashed.

Syntax

snmptcpmgr.on('HashPassword', listener: (e: {readonly password: string, readonly authAlgorithm: number, hash: string}) => void )

Remarks

SNMPv3 passwords are hashed in order to obtain authentication and encryption keys. This is an expensive operation, and in certain situations it may be preferable to store the hashed passwords externally and supply them on demand.

If a hash is required, the event fires with an empty string in the Hash parameter. In this case, you can choose to supply a value for the hash and stop the class from computing the hash.

The event also fires every time a hash is computed. In this case, the Hash parameter contains the value of the computed hash.

AuthAlgorithm contains either 1 for HMAC-MD5-96, 2 for HMAC-SHA-96 or 3 for HMAC-192-SHA-256

SNMPTCPMgr.InformRequest Event

Fired when an InformRequest packet is received.

Syntax

snmptcpmgr.on('InformRequest', listener: (e: {readonly requestId: number, readonly SNMPVersion: number, readonly community: string, readonly user: string, readonly securityLevel: number, readonly sourceAddress: string, readonly sourcePort: number, errorIndex: number, errorStatus: number, readonly errorDescription: string, respond: boolean}) => void )

Remarks

The user in an InformRequest packet (SNMPv3) must match the user in the User property. If not, the request is rejected, and a BadPacket event is fired before InformRequest is fired.

The list of variables in the SNMP packet, including optional values and types, is provided through the Objects collection. Each object is of type SNMPObject. This type describes the ObjectsOid, ObjectsObjectType, and ObjectsValue of each SNMP object. These variables must be copied to another location before the event has completed executing, or they may be overridden by other events.

The SourceAddress and SourcePort parameters show the address and port of the sender as reported by the TCP/IP stack.

The MessageId parameter identifies the received request.

To send a response, the Respond parameter must be set to true. By default, this value is false, which means no response will be sent. The ErrorStatus parameter may also be set to a valid SNMP status code (the default value is 0, which represents no error).

The following is a list of valid SNMP status code values:


0 (noError)	No error.
1 (tooBig)	The response cannot fit in a single SNMP message.
2 (noSuchName)	Variable does not exist.
3 (badValue)	Invalid value or syntax.
4 (readOnly)	Variable is read-only.
5 (genError)	Other error (SNMPv1).
6 (noAccess)	Access denied.
7 (wrongType)	Wrong object type.
8 (wrongLength)	Wrong length.
9 (wrongEncoding)	Wrong encoding.
10 (wrongValue)	Wrong value.
11 (noCreation)	No creation.
12 (inconsistentValue)	Inconsistent value.
13 (resourceUnavailable)	Resource unavailable.
14 (commitFailed)	Commit failed.
15 (undoFailed)	Undo failed.
16 (authorizationError)	Authorization error.
17 (notWritable)	Variable is not writable.
18 (inconsistentName)	Inconsistent name.

The ErrorIndex parameter indicates the index of the first variable (object) that caused an error. The default value is 0.

Variable indexes start with 0. ErrorIndex has no meaning when ErrorStatus is 0 (no error).

SNMPTCPMgr.PacketTrace Event

Fired for every packet sent or received.

Syntax

snmptcpmgr.on('PacketTrace', listener: (e: {readonly packet: string, readonly packetB: Uint8Array, readonly direction: number, readonly packetAddress: string, readonly packetPort: number}) => void )

Remarks

The PacketTrace event shows all the packets sent or received by the class.

Packet contains the full contents of the datagram.

Direction shows the direction of the packet: 1 for incoming packets, and 2 for outgoing packets.

In the case of an incoming packet, PacketAddress and PacketPort identify the source of the packet.

In the case of an outgoing packet, PacketAddress and PacketPort identify the destination of the packet.

SNMPTCPMgr.ReadyToSend Event

Fired when the class is ready to send data.

Syntax

snmptcpmgr.on('ReadyToSend', listener: (e: {}) => void )

Remarks

The ReadyToSend event indicates that the underlying TCP/IP subsystem is ready to accept data after a failed DataToSend.

SNMPTCPMgr.Report Event

Fired when a Report packet is received.

Syntax

snmptcpmgr.on('Report', listener: (e: {readonly requestId: number, readonly SNMPVersion: number, readonly community: string, readonly user: string, readonly securityLevel: number, readonly sourceAddress: string, readonly sourcePort: number, readonly errorIndex: number, readonly errorStatus: number, readonly errorDescription: string}) => void )

Remarks

The SourceAddress and SourcePort parameters show the address and port of the sender as reported by the TCP/IP stack.

SNMPTCPMgr.Response Event

Fired when a GetResponse packet is received.

Syntax

snmptcpmgr.on('Response', listener: (e: {readonly requestId: number, readonly SNMPVersion: number, readonly community: string, readonly user: string, readonly securityLevel: number, readonly sourceAddress: string, readonly sourcePort: number, readonly errorIndex: number, readonly errorStatus: number, readonly errorDescription: string}) => void )

Remarks

The ErrorStatus and ErrorIndex parameters contain information about possible errors. ErrorDescription is a textual description of ErrorStatus. This value is parsed directly from the SNMP response, which will be a one-based value, so a value of i here maps to index i-1 in the Objects collection.

The following is a list of valid SNMP status code values:


0 (noError)	No error.
1 (tooBig)	The response cannot fit in a single SNMP message.
2 (noSuchName)	Variable does not exist.
3 (badValue)	Invalid value or syntax.
4 (readOnly)	Variable is read-only.
5 (genError)	Other error (SNMPv1).
6 (noAccess)	Access denied.
7 (wrongType)	Wrong object type.
8 (wrongLength)	Wrong length.
9 (wrongEncoding)	Wrong encoding.
10 (wrongValue)	Wrong value.
11 (noCreation)	No creation.
12 (inconsistentValue)	Inconsistent value.
13 (resourceUnavailable)	Resource unavailable.
14 (commitFailed)	Commit failed.
15 (undoFailed)	Undo failed.
16 (authorizationError)	Authorization error.
17 (notWritable)	Variable is not writable.
18 (inconsistentName)	Inconsistent name.

The ErrorIndex parameter indicates the index of the first variable (object) that caused an error. The default value is 0.

Variable indexes start with 0. ErrorIndex has no meaning when ErrorStatus is 0 (no error).

The SourceAddress and SourcePort parameters show the address and port of the sender as reported by the TCP/IP stack.

SNMPTCPMgr.SSLClientAuthentication Event

Fired when the client presents its credentials to the server.

Syntax

snmptcpmgr.on('SSLClientAuthentication', listener: (e: {readonly remoteAddress: string, readonly remotePort: number, readonly certEncoded: string, readonly certEncodedB: Uint8Array, readonly certSubject: string, readonly certIssuer: string, readonly status: string, accept: boolean}) => void )

Remarks

This event fires when a client connects to the class and presents a certificate for authentication. 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").

RemoteAddress is the IP address of the connecting client.

RemotePort is the source port of the connecting client.

CertEncoded is the base64 encoded certificate presented by the client.

CertSubject is the subject of the certificate presented by the client.

CertIssuer is the subject of the issuer of the certificate presented by the client.

Status is the stauts of the certificate.

Accept defines whether the certificate is accepted.

SNMPTCPMgr.SSLServerAuthentication Event

Fires when connecting to the server.

Syntax

snmptcpmgr.on('SSLServerAuthentication', listener: (e: {readonly remoteAddress: string, readonly remotePort: number, readonly certEncoded: string, readonly certEncodedB: Uint8Array, readonly certSubject: string, readonly certIssuer: string, readonly status: string, accept: boolean}) => void )

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.

RemoteAddress is the IP address of the server.

RemotePort is the source port of the server.

CertEncoded is the base64 encoded certificate presented by the server.

CertSubject is the subject of the certificate presented by the server.

CertIssuer is the subject of the issuer of the certificate presented by the server.

Status is the stauts of the certificate.

Accept defines whether the certificate is accepted.

SNMPTCPMgr.SSLStatus Event

Shows the progress of the secure connection.

Syntax

snmptcpmgr.on('SSLStatus', listener: (e: {readonly remoteAddress: string, readonly remotePort: number, readonly message: string}) => void )

Remarks

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

RemoteAddress is the IP address of the remote machine.

RemotePort is the port of the remote machine.

Message is the log message.

SNMPTCPMgr.Trap Event

Fired when a SNMP trap packet is received.

Syntax

snmptcpmgr.on('Trap', listener: (e: {readonly requestId: number, readonly SNMPVersion: number, readonly community: string, readonly user: string, readonly securityLevel: number, readonly trapOID: string, readonly timeStamp: number, readonly sourceAddress: string, readonly sourcePort: number}) => void )

Remarks

The SNMPTrapMgr class should normally be used to receive traps, since it was designed and contains functionality specifically for that purpose. The SNMPMgr component can only receive traps from the agent that it is has most recently discovered with the Discover method.

The TrapOID and TimeStamp parameters contain the Trap OID and TimeStamp. In the case of an SNMPv1 trap, there are two possible scenarios:

First, if the enterprise of the trap is "1.3.6.1.6.3.1.1.5", TrapOID will be a concatenation of TrapEnterprise and GenericTrap + 1. For instance a TrapOID of "1.3.6.1.6.3.1.1.5.5" has a TrapEnterprise of "1.3.6.1.6.3.1.1.5" and a GenericTrap of "4".

Second, In all other cases TrapOID will be a concatenation of the values for TrapEnterprise, GenericTrap, and SpecificTrap, separated by '.'.

For SNMPv2 and above, they are read from the variable-value list (if available).

The SNMPMgr class is limited to accepting authenticated traps only for the user specified in User and Password and from the engine specified in RemoteEngineId with time parameters in RemoteEngineBoots and RemoteEngineTime (usually this is the SNMP engine discovered through the last call to Discover). If authenticated traps come from a different engine, or for a different user, they are ignored, and a BadPacket event is fired instead.

The SourceAddress and SourcePort parameters show the address and port of the sender as reported by the TCP/IP stack.

Certificate Type

This is the digital certificate being used.

Remarks

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

Fields

EffectiveDate
string (read-only)
Default Value: ""

This is the date on which this certificate becomes valid. Before this date, it is not valid. The following example illustrates the format of an encoded date:

23-Jan-2000 15:00:00.

Encoded
string
Default Value: ""

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

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

EncodedB
Uint8Array
Default Value: ""

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

ExpirationDate
string (read-only)
Default Value: ""

This is the date the certificate expires. After this date, the certificate will no longer be valid. The following example illustrates the format of an encoded date:

23-Jan-2001 15:00:00.

ExtendedKeyUsage
string
Default Value: ""

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

Fingerprint
string (read-only)
Default Value: ""

This is 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

FingerprintSHA1
string (read-only)
Default Value: ""

This is 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

FingerprintSHA256
string (read-only)
Default Value: ""

This is 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

Issuer
string (read-only)
Default Value: ""

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

KeyPassword
string
Default Value: ""

This is the password for the certificate's private key (if any).

Some certificate stores may individually protect certificates' private keys, separate from the standard protection offered by the . . This field can be used to read such password-protected private keys.

Note: this property defaults to the value of . To clear it, you must set the property to the empty string (""). It can be set at any time, but when the private key's password is different from the store's password, then it must be set before calling .

PrivateKey
string (read-only)
Default Value: ""

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

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

PrivateKeyAvailable
boolean (read-only)
Default Value: False

This property shows whether a is available for the selected certificate. If is True, the certificate may be used for authentication purposes (e.g., server authentication).

PrivateKeyContainer
string (read-only)
Default Value: ""

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

PublicKey
string (read-only)
Default Value: ""

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

PublicKeyAlgorithm
string
Default Value: ""

This property contains 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.

PublicKeyLength
number (read-only)
Default Value: 0

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

SerialNumber
string (read-only)
Default Value: ""

This is 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.

SignatureAlgorithm
string (read-only)
Default Value: ""

The property contains 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.

Store
string
Default Value: "MY"

This is the name of the certificate store for the client certificate.

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

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

Designations of certificate stores are platform dependent.

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


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

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., PKCS#12 certificate store).

StoreB
Uint8Array
Default Value: "MY"

This is the name of the certificate store for the client certificate.

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

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

Designations of certificate stores are platform dependent.

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


MY	A certificate store holding personal certificates with their associated private keys.
CA	Certifying authority certificates.
ROOT	Root certificates.

StorePassword
string
Default Value: ""

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

StoreType
CertStoreTypes
Default Value: 0

This is the type of certificate store for this certificate.

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


0 (cstUser - default)	For Windows, this specifies that the certificate store is a certificate store owned by the current user. Note: This store type is not available in Java.
1 (cstMachine)	For Windows, this specifies that the certificate store is a machine store. Note: This store type is not available in Java.
2 (cstPFXFile)	The certificate store is the name of a PFX (PKCS#12) file containing certificates.
3 (cstPFXBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in PFX (PKCS#12) format.
4 (cstJKSFile)	The certificate store is the name of a Java Key Store (JKS) file containing certificates. Note: This store type is only available in Java.
5 (cstJKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in Java Key Store (JKS) format. Note: this store type is only available in Java.
6 (cstPEMKeyFile)	The certificate store is the name of a PEM-encoded file that contains a private key and an optional certificate.
7 (cstPEMKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a private key and an optional certificate.
8 (cstPublicKeyFile)	The certificate store is the name of a file that contains a PEM- or DER-encoded public key certificate.
9 (cstPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains a PEM- or DER-encoded public key certificate.
10 (cstSSHPublicKeyBlob)	The certificate store is a string (binary or Base64-encoded) that contains an SSH-style public key.
11 (cstP7BFile)	The certificate store is the name of a PKCS#7 file containing certificates.
12 (cstP7BBlob)	The certificate store is a string (binary) representing a certificate store in PKCS#7 format.
13 (cstSSHPublicKeyFile)	The certificate store is the name of a file that contains an SSH-style public key.
14 (cstPPKFile)	The certificate store is the name of a file that contains a PPK (PuTTY Private Key).
15 (cstPPKBlob)	The certificate store is a string (binary) that contains a PPK (PuTTY Private Key).
16 (cstXMLFile)	The certificate store is the name of a file that contains a certificate in XML format.
17 (cstXMLBlob)	The certificate store is a string that contains a certificate in XML format.
18 (cstJWKFile)	The certificate store is the name of a file that contains a JWK (JSON Web Key).
19 (cstJWKBlob)	The certificate store is a string that contains a JWK (JSON Web Key).
21 (cstBCFKSFile)	The certificate store is the name of a file that contains a BCFKS (Bouncy Castle FIPS Key Store). Note: This store type is only available in Java and .NET.
22 (cstBCFKSBlob)	The certificate store is a string (binary or Base64-encoded) representing a certificate store in BCFKS (Bouncy Castle FIPS Key Store) format. Note: This store type is only available in Java and .NET.
23 (cstPKCS11)	The certificate is present on a physical security key accessible via a PKCS#11 interface. To use a security key, the necessary data must first be collected using the CertMgr class. The ListStoreCertificates method may be called after setting CertStoreType to `cstPKCS11`, CertStorePassword to the PIN, and CertStore to the full path of the PKCS#11 DLL. The certificate information returned in the CertList event's `CertEncoded` parameter may be saved for later use. When using a certificate, pass the previously saved security key information as the and set to the PIN. Code Example. SSH Authentication with Security Key: `certmgr.CertStoreType = CertStoreTypes.cstPKCS11; certmgr.OnCertList += (s, e) => { secKeyBlob = e.CertEncoded; }; certmgr.CertStore = @"C:\Program Files\OpenSC Project\OpenSC\pkcs11\opensc-pkcs11.dll"; certmgr.CertStorePassword = "123456"; //PIN certmgr.ListStoreCertificates(); sftp.SSHCert = new Certificate(CertStoreTypes.cstPKCS11, secKeyBlob, "123456", "*"); sftp.SSHUser = "test"; sftp.SSHLogon("myhost", 22);`
99 (cstAuto)	The store type is automatically detected from the input data. This setting may be used with both public and private keys and can detect any of the supported formats automatically.

Subject
string
Default Value: ""

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 as follows:


Field	Meaning
CN	Common Name. This is commonly a hostname like www.server.com.
O	Organization
OU	Organizational Unit
L	Locality
S	State
C	Country
E	Email Address

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

SubjectAltNames
string (read-only)
Default Value: ""

This property contains comma-separated lists of alternative subject names for the certificate.

ThumbprintMD5
string (read-only)
Default Value: ""

This property contains 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.

ThumbprintSHA1
string (read-only)
Default Value: ""

This property contains 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.

ThumbprintSHA256
string (read-only)
Default Value: ""

This property contains 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.

Usage
string
Default Value: ""

This property contains the text description of .

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

Digital Signatures
Key Authentication
Key Encryption
Data Encryption
Key Agreement
Certificate Signing
Key Signing

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

UsageFlags
number
Default Value: 0

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


0x80	Digital Signatures
0x40	Key Authentication (Non-Repudiation)
0x20	Key Encryption
0x10	Data Encryption
0x08	Key Agreement
0x04	Certificate Signing
0x02	Key Signing

Please see the property for a text representation of .

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

Version
string (read-only)
Default Value: ""

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

Constructors

public Certificate();

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

public Certificate(String certificateFile);

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

public Certificate(byte[] certificateData);

Parses CertificateData as an X.509 public key.

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

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

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

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

public Certificate(int certStoreType, String store, String storePassword, byte[] encoded);

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

public Certificate(int certStoreType, byte[] storeBlob, String storePassword, String subject);

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

public Certificate(int certStoreType, byte[] storeBlob, String storePassword, String subject, String configurationString);

public Certificate(int certStoreType, byte[] storeBlob, String storePassword, byte[] encoded);

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

SNMPObject Type

The current SNMP object.

Remarks

This type defines an SNMP object. Each object has an , , and . These values are populated by the class when incoming packets are received. You may use these fields to define objects to be used in outgoing packets.

Fields

ObjectType
SNMPObjectTypes
Default Value: 5

The current object's type. The default type is NULL (5).

The corresponding object id and value are specified by the and properties.

Possible object type values include:


otInteger (2)	2
otOctetString (4)	4
otNull (5)	5
otObjectID (6)	6
otIPAddress (64)	64
otCounter32 (65)	65
otGauge32 (66)	66
otTimeTicks (67)	67
otOpaque (68)	68
otNSAP (69)	69
otCounter64 (70)	70
otUnsignedInteger32 (71)	71

The class also supports the following artificial object values used to designate error conditions:


otNoSuchObject (128)	No such object error.
otNoSuchInstance (129)	No such instance error.
otEndOfMibView (130)	End of MIB View error.

Oid
string
Default Value: ""

The current object's id which is encoded as a string of numbers separated by periods. For instance: "1.3.6.1.2.1.1.1.0" (OID for "system description").

The corresponding object type and value (if any) are specified by the and properties.

Example

SNMPControl.ObjCount = 1 SNMPControl.ObjId(0) = "1.3.6.1.2.1.1.1.0"

TypeString
string (read-only)
Default Value: ""

A string representation of the current object's .

The corresponding object id and value are specified by the and properties.

Value
string
Default Value: ""

The current object's value. The corresponding object id and type are specified by the and properties.

Example

SNMPControl.ObjCount = 1 SNMPControl.ObjId(0) = "1.3.6.1.2.1.1.1.0" SNMPControl.ObjValue(0) = "New Value"

ValueB
Uint8Array
Default Value: ""

The current object's value. The corresponding object id and type are specified by the and properties.

Example

SNMPControl.ObjCount = 1 SNMPControl.ObjId(0) = "1.3.6.1.2.1.1.1.0" SNMPControl.ObjValue(0) = "New Value"

Constructors

public SNMPObject();

public SNMPObject(String oid);

public SNMPObject(String oid, byte[] value);

public SNMPObject(String oid, byte[] value, int SNMPObjectType);

Config Settings (class ipworkssnmp.snmptcpmgr)

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

SNMPTCPManager Config Settings

CheckMessageOrigin: Whether to match the origin IP address when receiving responses.

This setting specifies whether the class matches the source IP address in the response to the destination IP address of the request. When True (default) the class makes sure that response are received from the same IP to which the request was sent. In most cases this does not need to be changed. If there is a specific reason that responses are expected to originate from a different IP from that which the request was sent, this may be set to False. When False the class will not check the origin of received responses.

CompatibilityMode: Whether to operate the component in a specific compatibility mode.

This setting will cause the component to operate in a manner different than normal so that it is compatible with third-party products and libraries. The following table lists the possible values for this setting:


0 (default)	Component operates normally for greatest compatibility.
1	Component uses SNMP4j-compatible encryption (AES192 and AES256).
2	Component automatically detects whether to use SNMP4j-compatible encryption (AES192 and AES256). Note: This option is only applicable when receiving packets. If you are using SNMPMgr or sending secure traps, you will need to select either 0 or 1.

ContextEngineId: Sets the context engine id of the SNMP entity.

If set, the context engine id included in the PDU will be set.

ContextName: Sets the context name of the SNMP entity.

If set, the context name included in the PDU will be set.

DecryptLogPackets: Whether to decrypt logged packets.

When set to true this setting will cause the class to decrypt packets logged in PacketTrace. This only applies when using SNMP Version 3. The default is false.

ForceLocalPort: Forces the class to bind to a specific port.

The default value is True, which makes the class throw an error if LocalPort is busy. When ForceLocalPort is set to False and the port is busy, the class silently chooses another random port.

IncomingContextEngineId: The engine Id of the received packet.

This setting holds the engine Id of the received packet. This may be queried at any time, including from within an event, and returns the engine Id of the received packet. This is not needed in most cases, but can be used to store the incoming engine Id to send an asynchronous response later. This value is read-only.

IncomingContextName: The context name of the received packet.

This setting holds the context name of the received packet. This may be queried at any time, including from within an event, and returns the context name of the received packet. This is not needed in most cases, but can be used to store the incoming context name to send an asynchronous response later. This value is read-only.

MsgMaxSize: The maximum supported message size.

This setting specifies the maximum supported message size in bytes. This is only applicable when SNMPVersion is set to 3. This corresponds to the "msgMaxSize" field in the request.

SourceAddress: The source address of the received packet.

This setting holds the source address of the received packet. This may be queried at any time, including from within an event, and returns the source address of the received packet. This value is read-only.

SourcePort: The source port of the received packet.

This setting holds the source port of the received packet. This may be queried at any time, including from within an event, and returns the source port of the received packet. This value is read-only.

TimeoutInMilliseconds: The timeout is treated as milliseconds.

Setting TimeoutInMilliseconds to true causes the class to use the value in Timeout as milliseconds instead of seconds, which is the default.

WalkInsideRange: Stops the SNMP walk if the OID value returned from an agent is outside the table.

When WalkInsideRange is set to true the Walk will continue only while the OID Values returned from the agent are greater than the current OID Value. If an object is returned with an OID value that is out of this range it is not added to the Objects collection, the Error event will fire, and Walk will return. The default value is true.

WalkStartOID: Specifies the OID to be used when a Walk is performed.

When this property is set and Walk is called, the first request sent will contain the specified WalkStartOID value. This feature is particularly useful in the case of errors, such as timeouts, that may occur during a Walk. In such a case, you can set WalkStartOID to the last OID returned before the Timeout occurred then call Walk again (using the original tableOID parameter value). This will allow you to continue the Walk where it left off (when the Timeout error occurred).

Note that when StoreWalkObjects is set to true and WalkStartOID is set, the existing entries in Objects will be maintained when Walk is called and new returned objects will be added (just as if no error occurred in the initial Walk call).

TCPClient Config Settings

ConnectionTimeout: Sets a separate timeout value for establishing a connection.

When set, this configuration setting allows you to specify a different timeout value for establishing a connection. Otherwise, the class will use Timeout for establishing a connection and transmitting/receiving data.

FirewallAutoDetect: Tells the class whether or not to automatically detect and use firewall system settings, if available.

This configuration setting is provided for use by classs that do not directly expose Firewall properties.

FirewallHost: Name or IP address of firewall (optional).

If a FirewallHost is given, requested connections will be authenticated through the specified firewall when connecting.

If the FirewallHost setting is set to a Domain Name, a DNS request is initiated. Upon successful termination of the request, the FirewallHost setting is set to the corresponding address. If the search is not successful, an error is returned.

Note: This setting is provided for use by classs that do not directly expose Firewall properties.

FirewallPassword: Password to be used if authentication is to be used when connecting through the firewall.

If FirewallHost is specified, the FirewallUser and FirewallPassword settings are used to connect and authenticate to the given firewall. If the authentication fails, the class .

Note: This setting is provided for use by classs that do not directly expose Firewall properties.

FirewallPort: The TCP port for the FirewallHost;.

The FirewallPort is set automatically when FirewallType is set to a valid value.

Note: This configuration setting is provided for use by classs that do not directly expose Firewall properties.

FirewallType: Determines the type of firewall to connect through.

The appropriate values are as follows:


0	No firewall (default setting).
1	Connect through a tunneling proxy. FirewallPort is set to 80.
2	Connect through a SOCKS4 Proxy. FirewallPort is set to 1080.
3	Connect through a SOCKS5 Proxy. FirewallPort is set to 1080.
10	Connect through a SOCKS4A Proxy. FirewallPort is set to 1080.

Note: This setting is provided for use by classs that do not directly expose Firewall properties.

FirewallUser: A user name if authentication is to be used connecting through a firewall.

If the FirewallHost is specified, the FirewallUser and FirewallPassword settings are used to connect and authenticate to the Firewall. If the authentication fails, the class .

Note: This setting is provided for use by classs that do not directly expose Firewall properties.

KeepAliveInterval: The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.

When set, TCPKeepAlive will automatically be set to True. A TCP keep-alive packet will be sent after a period of inactivity as defined by KeepAliveTime. If no acknowledgment is received from the remote host, the keep-alive packet will be sent again. This configuration setting specifies the interval at which the successive keep-alive packets are sent in milliseconds. This system default if this value is not specified here is 1 second.

Note: This value is not applicable in macOS.

KeepAliveTime: The inactivity time in milliseconds before a TCP keep-alive packet is sent.

When set, TCPKeepAlive will automatically be set to True. By default, the operating system will determine the time a connection is idle before a Transmission Control Protocol (TCP) keep-alive packet is sent. This system default if this value is not specified here is 2 hours. In many cases, a shorter interval is more useful. Set this value to the desired interval in milliseconds.

Linger: When set to True, connections are terminated gracefully.

This property controls how a connection is closed. The default is True.

In the case that Linger is True (default), two scenarios determine how long the connection will linger. In the first, if LingerTime is 0 (default), the system will attempt to send pending data for a connection until the default IP timeout expires.

In the second scenario, if LingerTime is a positive value, the system will attempt to send pending data until the specified LingerTime is reached. If this attempt fails, then the system will reset the connection.

The default behavior (which is also the default mode for stream sockets) might result in a long delay in closing the connection. Although the class returns control immediately, the system could hold system resources until all pending data are sent (even after your application closes).

Setting this property to False forces an immediate disconnection. If you know that the other side has received all the data you sent (e.g., by a client acknowledgment), setting this property to False might be the appropriate course of action.

LingerTime: Time in seconds to have the connection linger.

LingerTime is the time, in seconds, the socket connection will linger. This value is 0 by default, which means it will use the default IP timeout.

LocalHost: The name of the local host through which connections are initiated or accepted.

The LocalHost setting 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.

If the class is connected, the LocalHost setting 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).

LocalPort: The port in the local host where the class binds.

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

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

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

This; setting is useful when trying to connect to services that require a trusted port in the client side. An example is the remote shell (rsh) service in UNIX systems.

MaxLineLength: The maximum amount of data to accumulate when no EOL is found.

MaxLineLength is the size of an internal buffer, which holds received data while waiting for an EOL string.

If an EOL string is found in the input stream before MaxLineLength bytes are received, the DataIn event is fired with the EOL parameter set to True, and the buffer is reset.

If no EOL is found, and MaxLineLength bytes are accumulated in the buffer, the DataIn event is fired with the EOL parameter set to False, and the buffer is reset.

The minimum value for MaxLineLength is 256 bytes. The default value is 2048 bytes.

MaxTransferRate: The transfer rate limit in bytes per second.

This configuration setting can be used to throttle outbound TCP traffic. Set this to the number of bytes to be sent per second. By default, this is not set and there is no limit.

ProxyExceptionsList: A semicolon separated list of hosts and IPs to bypass when using a proxy.

This configuration setting optionally specifies a semicolon-separated list of hostnames or IP addresses to bypass when a proxy is in use. When requests are made to hosts specified in this property, the proxy will not be used. For instance:

www.google.com;www.nsoftware.com

TCPKeepAlive: Determines whether or not the keep alive socket option is enabled.

If set to True, the socket's keep-alive option is enabled and keep-alive packets will be sent periodically to maintain the connection. Set KeepAliveTime and KeepAliveInterval to configure the timing of the keep-alive packets.

Note: This value is not applicable in Java.

TcpNoDelay: Whether or not to delay when sending packets.

When true, the socket will send all data that is ready to send at once. When false, the socket will send smaller buffered packets of data at small intervals. This is known as the Nagle algorithm.

By default, this config is set to false.

UseIPv6: Whether to use IPv6.

When set to 0 (default), the class will use IPv4 exclusively. When set to 1, the class will use IPv6 exclusively. To instruct the class to prefer IPv6 addresses, but use IPv4 if IPv6 is not supported on the system, this setting should be set to 2. The default value is 0. Possible values are:


0	IPv4 Only
1	IPv6 Only
2	IPv6 with IPv4 fallback

SSL Config Settings

LogSSLPackets: Controls whether SSL packets are logged when using the internal security API.

When SSLProvider is set to Internal, this setting controls whether SSL packets should be logged. By default, this setting is False, as it is only useful for debugging purposes.

When enabled, SSL packet logs are output using the SSLStatus event, which will fire each time an SSL packet is sent or received.

Enabling this setting has no effect if SSLProvider is set to Platform.

OpenSSLCADir: The path to a directory containing CA certificates.

This functionality is available only when the provider is OpenSSL.

The path set by this property should point to a directory containing CA certificates in PEM format. The files each contain one CA certificate. The files are looked up by the CA subject name hash value, which must hence be available. If more than one CA certificate with the same name hash value exist, the extension must be different (e.g. 9d66eef0.0, 9d66eef0.1 etc). OpenSSL recommends to use the c_rehash utility to create the necessary links. Please refer to the OpenSSL man page SSL_CTX_load_verify_locations(3) for details.

OpenSSLCAFile: Name of the file containing the list of CA's trusted by your application.

This functionality is available only when the provider is OpenSSL.

The file set by this property should contain a list of CA certificates in PEM format. The file can contain several CA certificates identified by

-----BEGIN CERTIFICATE-----

... (CA certificate in base64 encoding) ...

-----END CERTIFICATE-----

sequences. Before, between, and after the certificates text is allowed which can be used e.g. for descriptions of the certificates. Please refer to the OpenSSL man page SSL_CTX_load_verify_locations(3) for details.

OpenSSLCipherList: A string that controls the ciphers to be used by SSL.

This functionality is available only when the provider is OpenSSL.

The format of this string is described in the OpenSSL man page ciphers(1) section "CIPHER LIST FORMAT". Please refer to it for details. The default string "DEFAULT" is determined at compile time and is normally equivalent to "ALL:!ADH:RC4+RSA:+SSLv2:@STRENGTH".

OpenSSLPrngSeedData: The data to seed the pseudo random number generator (PRNG).

This functionality is available only when the provider is OpenSSL.

By default OpenSSL uses the device file "/dev/urandom" to seed the PRNG and setting OpenSSLPrngSeedData is not required. If set, the string specified is used to seed the PRNG.

ReuseSSLSession: Determines if the SSL session is reused.

If set to true, the class will reuse the context if and only if the following criteria are met:

The target host name is the same.
The system cache entry has not expired (default timeout is 10 hours).
The application process that calls the function is the same.
The logon session is the same.
The instance of the class is the same.

SSLAcceptAnyServerCert: Whether to trust any certificate presented by the server.

This setting disables all certificate verification when set to True. This configuration setting must be enabled to trust a self-signed certificate. It is not recommended to enable this configuration setting in a production environment. The default value is False.

SSLCACerts: A newline separated list of CA certificate to use during SSL client authentication.

This setting specifies one or more CA certificates to be included in the request when performing SSL client authentication. Some servers require the entire chain, including CA certificates, to be presented when performing SSL client authentication. The value of this setting is a newline (CrLf) separated list of certificates. For instance:

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

SSLCipherStrength: The minimum cipher strength used for bulk encryption.

This minimum cipher strength largely dependent on the security modules installed on the system. If the cipher strength specified is not supported, an error will be returned when connections are initiated.

Please note that this setting contains the minimum cipher strength requested from the security library. The actual cipher strength used for the connection is shown by the SSLStatus event.

Use this setting with caution. Requesting a lower cipher strength than necessary could potentially cause serious security vulnerabilities in your application.

When the provider is OpenSSL, SSLCipherStrength is currently not supported. This functionality is instead made available through the OpenSSLCipherList config setting.

SSLEnabledCipherSuites: The cipher suite to be used in an SSL negotiation.

The enabled cipher suites to be used in SSL negotiation.

By default, the enabled cipher suites will include all available ciphers ("*").

The special value "*" means that the class will pick all of the supported cipher suites. If SSLEnabledCipherSuites is set to any other value, only the specified cipher suites will be considered.

Multiple cipher suites are separated by semicolons.

Example values when SSLProvider is set to Platform: obj.config("SSLEnabledCipherSuites=*"); obj.config("SSLEnabledCipherSuites=CALG_AES_256"); obj.config("SSLEnabledCipherSuites=CALG_AES_256;CALG_3DES"); Possible values when SSLProvider is set to Platform include:

CALG_3DES
CALG_3DES_112
CALG_AES
CALG_AES_128
CALG_AES_192
CALG_AES_256
CALG_AGREEDKEY_ANY
CALG_CYLINK_MEK
CALG_DES
CALG_DESX
CALG_DH_EPHEM
CALG_DH_SF
CALG_DSS_SIGN
CALG_ECDH
CALG_ECDH_EPHEM
CALG_ECDSA
CALG_ECMQV
CALG_HASH_REPLACE_OWF
CALG_HUGHES_MD5
CALG_HMAC
CALG_KEA_KEYX
CALG_MAC
CALG_MD2
CALG_MD4
CALG_MD5
CALG_NO_SIGN
CALG_OID_INFO_CNG_ONLY
CALG_OID_INFO_PARAMETERS
CALG_PCT1_MASTER
CALG_RC2
CALG_RC4
CALG_RC5
CALG_RSA_KEYX
CALG_RSA_SIGN
CALG_SCHANNEL_ENC_KEY
CALG_SCHANNEL_MAC_KEY
CALG_SCHANNEL_MASTER_HASH
CALG_SEAL
CALG_SHA
CALG_SHA1
CALG_SHA_256
CALG_SHA_384
CALG_SHA_512
CALG_SKIPJACK
CALG_SSL2_MASTER
CALG_SSL3_MASTER
CALG_SSL3_SHAMD5
CALG_TEK
CALG_TLS1_MASTER
CALG_TLS1PRF

Example values when SSLProvider is set to Internal:

obj.config("SSLEnabledCipherSuites=*");
obj.config("SSLEnabledCipherSuites=TLS_DHE_DSS_WITH_AES_128_CBC_SHA");
obj.config("SSLEnabledCipherSuites=TLS_DHE_DSS_WITH_AES_128_CBC_SHA;TLS_DH_ANON_WITH_AES_128_CBC_SHA");

Possible values when SSLProvider is set to Internal include:

TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
TLS_RSA_WITH_AES_128_GCM_SHA256
TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
TLS_DHE_DSS_WITH_AES_256_GCM_SHA384
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
TLS_DHE_DSS_WITH_AES_128_GCM_SHA256
TLS_DH_RSA_WITH_AES_128_GCM_SHA256 (Not Recommended)
TLS_DH_RSA_WITH_AES_256_GCM_SHA384 (Not Recommended)
TLS_DH_DSS_WITH_AES_128_GCM_SHA256 (Not Recommended)
TLS_DH_DSS_WITH_AES_256_GCM_SHA384 (Not Recommended)
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256
TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA384
TLS_DHE_DSS_WITH_AES_256_CBC_SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
TLS_ECDH_RSA_WITH_AES_256_CBC_SHA384
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA256
TLS_ECDH_RSA_WITH_AES_128_CBC_SHA256
TLS_DHE_DSS_WITH_AES_128_CBC_SHA256
TLS_RSA_WITH_AES_256_CBC_SHA
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA
TLS_DHE_RSA_WITH_AES_256_CBC_SHA
TLS_ECDH_RSA_WITH_AES_256_CBC_SHA
TLS_DHE_DSS_WITH_AES_256_CBC_SHA
TLS_RSA_WITH_AES_128_CBC_SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA
TLS_ECDH_RSA_WITH_AES_128_CBC_SHA
TLS_DHE_RSA_WITH_AES_128_CBC_SHA
TLS_DHE_DSS_WITH_AES_128_CBC_SHA
TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA
TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA
TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA
TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA
TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA
TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA
TLS_RSA_WITH_3DES_EDE_CBC_SHA
TLS_RSA_WITH_DES_CBC_SHA
TLS_DHE_RSA_WITH_DES_CBC_SHA
TLS_DHE_DSS_WITH_DES_CBC_SHA
TLS_RSA_WITH_RC4_128_MD5
TLS_RSA_WITH_RC4_128_SHA

When TLS 1.3 is negotiated (see SSLEnabledProtocols) only the following cipher suites are supported:

TLS_AES_256_GCM_SHA384
TLS_CHACHA20_POLY1305_SHA256
TLS_AES_128_GCM_SHA256

SSLEnabledCipherSuites is used together with SSLCipherStrength.

SSLEnabledProtocols: Used to enable/disable the supported security protocols.

Used to enable/disable the supported security protocols.

Not all supported protocols are enabled by default (the value of this setting is 4032). If you want more granular control over the enabled protocols, you can set this property to the binary 'OR' of one or more of the following values:


TLS1.3	12288 (Hex 3000)
TLS1.2	3072 (Hex C00) (Default)
TLS1.1	768 (Hex 300) (Default)
TLS1	192 (Hex C0) (Default)
SSL3	48 (Hex 30) [Platform Only]
SSL2	12 (Hex 0C) [Platform Only]

SSLEnabledProtocols - TLS 1.3 Notes

In the JavaScript edition the platform implementation is used when TLS 1.3 is enabled and SSLEnabledCipherSuites and other similar SSL configuration settings are not supported.

SSLEnabledProtocols: SSL2 and SSL3 Notes:

SSL 2.0 and 3.0 are not supported by the class when the SSLProvider is set to internal. To use SSL 2.0 or SSL 3.0, the platform security API must have the protocols enabled and SSLProvider needs to be set to platform.

SSLEnableRenegotiation: Whether the renegotiation_info SSL extension is supported.

This setting specifies whether the renegotiation_info SSL extension will be used in the request when using the internal security API. This setting is true by default, but can be set to false to disable the extension.

This setting is only applicable when SSLProvider is set to Internal.

SSLIncludeCertChain: Whether the entire certificate chain is included in the SSLServerAuthentication event.

This setting specifies whether the Encoded parameter of the SSLServerAuthentication event contains the full certificate chain. By default this value is False and only the leaf certificate will be present in the Encoded parameter of the SSLServerAuthentication event.

If set to True all certificates returned by the server will be present in the Encoded parameter of the SSLServerAuthentication event. This includes the leaf certificate, any intermediate certificate, and the root certificate.

SSLKeyLogFile: The location of a file where per-session secrets are written for debugging purposes.

This setting optionally specifies the full path to a file on disk where per-session secrets are stored for debugging purposes.

When set, the class will save the session secrets in the same format as the SSLKEYLOGFILE environment variable functionality used by most major browsers and tools such as Chrome, Firefox, and cURL. This file can then be used in tools such as Wireshark to decrypt TLS traffice for debugging purposes. When writing to this file the class will only append, it will not overwrite previous values.

Note: This setting is only applicable when SSLProvider is set to Internal.

SSLNegotiatedCipher: Returns the negotiated cipher suite.

Returns the cipher suite negotiated during the SSL handshake.

Note: For server components (e.g. TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedCipher[connId]");

SSLNegotiatedCipherStrength: Returns the negotiated cipher suite strength.

Returns the strength of the cipher suite negotiated during the SSL handshake.

Note: For server components (e.g.TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedCipherStrength[connId]");

SSLNegotiatedCipherSuite: Returns the negotiated cipher suite.

Returns the cipher suite negotiated during the SSL handshake represented as a single string.

Note: For server components (e.g. TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedCipherSuite[connId]");

SSLNegotiatedKeyExchange: Returns the negotiated key exchange algorithm.

Returns the key exchange algorithm negotiated during the SSL handshake.

Note: For server components (e.g. TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedKeyExchange[connId]");

SSLNegotiatedKeyExchangeStrength: Returns the negotiated key exchange algorithm strength.

Returns the strenghth of the key exchange algorithm negotiated during the SSL handshake.

Note: For server components (e.g. TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedKeyExchangeStrength[connId]");

SSLNegotiatedVersion: Returns the negotiated protocol version.

Returns the protocol version negotiated during the SSL handshake.

Note: For server components (e.g. TCPServer) this is a per-connection setting accessed by passing the ConnectionId. For example: server.Config("SSLNegotiatedVersion[connId]");

SSLSecurityFlags: Flags that control certificate verification.

The following flags are defined (specified in hexadecimal notation). They can be or-ed together to exclude multiple conditions:


0x00000001	Ignore time validity status of certificate.
0x00000002	Ignore time validity status of CTL.
0x00000004	Ignore non-nested certificate times.
0x00000010	Allow unknown Certificate Authority.
0x00000020	Ignore wrong certificate usage.
0x00000100	Ignore unknown certificate revocation status.
0x00000200	Ignore unknown CTL signer revocation status.
0x00000400	Ignore unknown Certificate Authority revocation status.
0x00000800	Ignore unknown Root revocation status.
0x00008000	Allow test Root certificate.
0x00004000	Trust test Root certificate.
0x80000000	Ignore non-matching CN (certificate CN not-matching server name).

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

SSLServerCACerts: A newline separated list of CA certificate to use during SSL server certificate validation.

This setting optionally specifies one or more CA certificates to be used when verifying the server certificate. When verifying the server's certificate the certificates trusted by the system will be used as part of the verification process. If the server's CA certificates are not installed to the trusted system store, they may be specified here so they are included when performing the verification process. This setting should only be set if the server's CA certificates are not already trusted on the system and cannot be installed to the trusted system store.

The value of this setting is a newline (CrLf) separated list of certificates. For instance:

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

TLS12SignatureAlgorithms: Defines the allowed TLS 1.2 signature algorithms when SSLProvider is set to Internal.

This setting specifies the allowed server certificate signature algorithms when SSLProvider is set to Internal and SSLEnabledProtocols is set to allow TLS 1.2.

When specified the class will verify that the server certificate signature algorithm is among the values specified in this setting. If the server certificate signature algorithm is unsupported the class .

The format of this value is a comma separated list of hash-signature combinations. For instance: component.SSLProvider = TCPClientSSLProviders.sslpInternal; component.Config("SSLEnabledProtocols=3072"); //TLS 1.2 component.Config("TLS12SignatureAlgorithms=sha256-rsa,sha256-dsa,sha1-rsa,sha1-dsa"); The default value for this setting is sha512-ecdsa,sha512-rsa,sha512-dsa,sha384-ecdsa,sha384-rsa,sha384-dsa,sha256-ecdsa,sha256-rsa,sha256-dsa,sha224-ecdsa,sha224-rsa,sha224-dsa,sha1-ecdsa,sha1-rsa,sha1-dsa.

In order to not restrict the server's certificate signature algorithm, specify an empty string as the value for this setting, which will cause the signature_algorithms TLS 1.2 extension to not be sent.

TLS12SupportedGroups: The supported groups for ECC.

This setting specifies a comma separated list of named groups used in TLS 1.2 for ECC.

The default value is ecdhe_secp256r1,ecdhe_secp384r1,ecdhe_secp521r1.

When using TLS 1.2 and SSLProvider is set to Internal, the values refer to the supported groups for ECC. The following values are supported:

"ecdhe_secp256r1" (default)
"ecdhe_secp384r1" (default)
"ecdhe_secp521r1" (default)

TLS13KeyShareGroups: The groups for which to pregenerate key shares.

This setting specifies a comma separated list of named groups used in TLS 1.3 for key exchange. The groups specified here will have key share data pregenerated locally before establishing a connection. This can prevent an additional round trip during the handshake if the group is supported by the server.

The default value is set to balance common supported groups and the computational resources required to generate key shares. As a result only some groups are included by default in this setting.

Note: All supported groups can always be used during the handshake even if not listed here, but if a group is used which is not present in this list it will incur an additional round trip and time to generate the key share for that group.

In most cases this setting does not need to be modified. This should only be modified if there is a specific reason to do so.

The default value is ecdhe_x25519,ecdhe_secp256r1,ecdhe_secp384r1,ffdhe_2048,ffdhe_3072

The values are ordered from most preferred to least preferred. The following values are supported:

"ecdhe_x25519" (default)
"ecdhe_x448"
"ecdhe_secp256r1" (default)
"ecdhe_secp384r1" (default)
"ecdhe_secp521r1"
"ffdhe_2048" (default)
"ffdhe_3072" (default)
"ffdhe_4096"
"ffdhe_6144"
"ffdhe_8192"

TLS13SignatureAlgorithms: The allowed certificate signature algorithms.

This setting holds a comma separated list of allowed signature algorithms. Possible values are:

"ed25519" (default)
"ed448" (default)
"ecdsa_secp256r1_sha256" (default)
"ecdsa_secp384r1_sha384" (default)
"ecdsa_secp521r1_sha512" (default)
"rsa_pkcs1_sha256" (default)
"rsa_pkcs1_sha384" (default)
"rsa_pkcs1_sha512" (default)
"rsa_pss_sha256" (default)
"rsa_pss_sha384" (default)
"rsa_pss_sha512" (default)

The default value is rsa_pss_sha256,rsa_pss_sha384,rsa_pss_sha512,rsa_pkcs1_sha256,rsa_pkcs1_sha384,rsa_pkcs1_sha512,ecdsa_secp256r1_sha256,ecdsa_secp384r1_sha384,ecdsa_secp521r1_sha512,ed25519,ed448. This setting is only applicable when SSLEnabledProtocols includes TLS 1.3.

TLS13SupportedGroups: The supported groups for (EC)DHE key exchange.

This setting specifies a comma separated list of named groups used in TLS 1.3 for key exchange. This setting should only be modified if there is a specific reason to do so.

The default value is ecdhe_x25519,ecdhe_x448,ecdhe_secp256r1,ecdhe_secp384r1,ecdhe_secp521r1,ffdhe_2048,ffdhe_3072,ffdhe_4096,ffdhe_6144,ffdhe_8192

The values are ordered from most preferred to least preferred. The following values are supported:

"ecdhe_x25519" (default)
"ecdhe_x448" (default)
"ecdhe_secp256r1" (default)
"ecdhe_secp384r1" (default)
"ecdhe_secp521r1" (default)
"ffdhe_2048" (default)
"ffdhe_3072" (default)
"ffdhe_4096" (default)
"ffdhe_6144" (default)
"ffdhe_8192" (default)

Socket Config Settings

AbsoluteTimeout: Determines whether timeouts are inactivity timeouts or absolute timeouts.

If AbsoluteTimeout is set to True, any method which does not complete within Timeout seconds will be aborted. By default, AbsoluteTimeout is False, and the timeout is an inactivity timeout.

Note: This option is not valid for UDP ports.

FirewallData: Used to send extra data to the firewall.

When the firewall is a tunneling proxy, use this property to send custom (additional) headers to the firewall (e.g. headers for custom authentication schemes).

InBufferSize: The size in bytes of the incoming queue of the socket.

This is the size of an internal queue in the TCP/IP stack. You can increase or decrease its size depending on the amount of data that you will be receiving. Increasing the value of the InBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated the InBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small.

OutBufferSize: The size in bytes of the outgoing queue of the socket.

This is the size of an internal queue in the TCP/IP stack. You can increase or decrease its size depending on the amount of data that you will be sending. Increasing the value of the OutBufferSize setting can provide significant improvements in performance in some cases.

Some TCP/IP implementations do not support variable buffer sizes. If that is the case, when the class is activated the OutBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small.

Base Config Settings

BuildInfo: Information about the product's build.

When queried, this setting will return a string containing information about the product's build.

CodePage: The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:


Identifier	Name
037	IBM EBCDIC - U.S./Canada
437	OEM - United States
500	IBM EBCDIC - International
708	Arabic - ASMO 708
709	Arabic - ASMO 449+, BCON V4
710	Arabic - Transparent Arabic
720	Arabic - Transparent ASMO
737	OEM - Greek (formerly 437G)
775	OEM - Baltic
850	OEM - Multilingual Latin I
852	OEM - Latin II
855	OEM - Cyrillic (primarily Russian)
857	OEM - Turkish
858	OEM - Multilingual Latin I + Euro symbol
860	OEM - Portuguese
861	OEM - Icelandic
862	OEM - Hebrew
863	OEM - Canadian-French
864	OEM - Arabic
865	OEM - Nordic
866	OEM - Russian
869	OEM - Modern Greek
870	IBM EBCDIC - Multilingual/ROECE (Latin-2)
874	ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875	IBM EBCDIC - Modern Greek
932	ANSI/OEM - Japanese, Shift-JIS
936	ANSI/OEM - Simplified Chinese (PRC, Singapore)
949	ANSI/OEM - Korean (Unified Hangul Code)
950	ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026	IBM EBCDIC - Turkish (Latin-5)
1047	IBM EBCDIC - Latin 1/Open System
1140	IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141	IBM EBCDIC - Germany (20273 + Euro symbol)
1142	IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143	IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144	IBM EBCDIC - Italy (20280 + Euro symbol)
1145	IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146	IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147	IBM EBCDIC - France (20297 + Euro symbol)
1148	IBM EBCDIC - International (500 + Euro symbol)
1149	IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200	Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201	Unicode UCS-2 Big-Endian
1250	ANSI - Central European
1251	ANSI - Cyrillic
1252	ANSI - Latin I
1253	ANSI - Greek
1254	ANSI - Turkish
1255	ANSI - Hebrew
1256	ANSI - Arabic
1257	ANSI - Baltic
1258	ANSI/OEM - Vietnamese
1361	Korean (Johab)
10000	MAC - Roman
10001	MAC - Japanese
10002	MAC - Traditional Chinese (Big5)
10003	MAC - Korean
10004	MAC - Arabic
10005	MAC - Hebrew
10006	MAC - Greek I
10007	MAC - Cyrillic
10008	MAC - Simplified Chinese (GB 2312)
10010	MAC - Romania
10017	MAC - Ukraine
10021	MAC - Thai
10029	MAC - Latin II
10079	MAC - Icelandic
10081	MAC - Turkish
10082	MAC - Croatia
12000	Unicode UCS-4 Little-Endian
12001	Unicode UCS-4 Big-Endian
20000	CNS - Taiwan
20001	TCA - Taiwan
20002	Eten - Taiwan
20003	IBM5550 - Taiwan
20004	TeleText - Taiwan
20005	Wang - Taiwan
20105	IA5 IRV International Alphabet No. 5 (7-bit)
20106	IA5 German (7-bit)
20107	IA5 Swedish (7-bit)
20108	IA5 Norwegian (7-bit)
20127	US-ASCII (7-bit)
20261	T.61
20269	ISO 6937 Non-Spacing Accent
20273	IBM EBCDIC - Germany
20277	IBM EBCDIC - Denmark/Norway
20278	IBM EBCDIC - Finland/Sweden
20280	IBM EBCDIC - Italy
20284	IBM EBCDIC - Latin America/Spain
20285	IBM EBCDIC - United Kingdom
20290	IBM EBCDIC - Japanese Katakana Extended
20297	IBM EBCDIC - France
20420	IBM EBCDIC - Arabic
20423	IBM EBCDIC - Greek
20424	IBM EBCDIC - Hebrew
20833	IBM EBCDIC - Korean Extended
20838	IBM EBCDIC - Thai
20866	Russian - KOI8-R
20871	IBM EBCDIC - Icelandic
20880	IBM EBCDIC - Cyrillic (Russian)
20905	IBM EBCDIC - Turkish
20924	IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932	JIS X 0208-1990 & 0121-1990
20936	Simplified Chinese (GB2312)
21025	IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027	Extended Alpha Lowercase
21866	Ukrainian (KOI8-U)
28591	ISO 8859-1 Latin I
28592	ISO 8859-2 Central Europe
28593	ISO 8859-3 Latin 3
28594	ISO 8859-4 Baltic
28595	ISO 8859-5 Cyrillic
28596	ISO 8859-6 Arabic
28597	ISO 8859-7 Greek
28598	ISO 8859-8 Hebrew
28599	ISO 8859-9 Latin 5
28605	ISO 8859-15 Latin 9
29001	Europa 3
38598	ISO 8859-8 Hebrew
50220	ISO 2022 Japanese with no halfwidth Katakana
50221	ISO 2022 Japanese with halfwidth Katakana
50222	ISO 2022 Japanese JIS X 0201-1989
50225	ISO 2022 Korean
50227	ISO 2022 Simplified Chinese
50229	ISO 2022 Traditional Chinese
50930	Japanese (Katakana) Extended
50931	US/Canada and Japanese
50933	Korean Extended and Korean
50935	Simplified Chinese Extended and Simplified Chinese
50936	Simplified Chinese
50937	US/Canada and Traditional Chinese
50939	Japanese (Latin) Extended and Japanese
51932	EUC - Japanese
51936	EUC - Simplified Chinese
51949	EUC - Korean
51950	EUC - Traditional Chinese
52936	HZ-GB2312 Simplified Chinese
54936	Windows XP: GB18030 Simplified Chinese (4 Byte)
57002	ISCII Devanagari
57003	ISCII Bengali
57004	ISCII Tamil
57005	ISCII Telugu
57006	ISCII Assamese
57007	ISCII Oriya
57008	ISCII Kannada
57009	ISCII Malayalam
57010	ISCII Gujarati
57011	ISCII Punjabi
65000	Unicode UTF-7
65001	Unicode UTF-8

The following is a list of valid code page identifiers for Mac OS only:


Identifier	Name
1	ASCII
2	NEXTSTEP
3	JapaneseEUC
4	UTF8
5	ISOLatin1
6	Symbol
7	NonLossyASCII
8	ShiftJIS
9	ISOLatin2
10	Unicode
11	WindowsCP1251
12	WindowsCP1252
13	WindowsCP1253
14	WindowsCP1254
15	WindowsCP1250
21	ISO2022JP
30	MacOSRoman
10	UTF16String
0x90000100	UTF16BigEndian
0x94000100	UTF16LittleEndian
0x8c000100	UTF32String
0x98000100	UTF32BigEndian
0x9c000100	UTF32LittleEndian
65536	Proprietary

LicenseInfo: Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

Product: The product the license is for.
Product Key: The key the license was generated from.
License Source: Where the license was found (e.g., RuntimeLicense, License File).
License Type: The type of license installed (e.g., Royalty Free, Single Server).
Last Valid Build: The last valid build number for which the license will work.

MaskSensitive: Whether sensitive data is masked in log messages.

In certain circumstances it may be beneficial to mask sensitive data, like passwords, in log messages. Set this to true to mask sensitive data. The default is true.

This setting only works on these classes: AS3Receiver, AS3Sender, Atom, Client(3DS), FTP, FTPServer, IMAP, OFTPClient, SSHClient, SCP, Server(3DS), Sexec, SFTP, SFTPServer, SSHServer, TCPClient, TCPServer.

UseInternalSecurityAPI: Whether or not to use the system security libraries or an internal implementation.

When set to false, the class will use the system security libraries by default to perform cryptographic functions where applicable.

Setting this configuration setting to true tells the class to use the internal implementation instead of using the system security libraries.

This setting is set to false by default on all platforms.

Trappable Errors (class ipworkssnmp.snmptcpmgr)

SNMPTCPMgr Errors


	201 Timeout.
	301 Bad Object Index when accessing the Obj* properties. Timeout when performing an operation. Check the error description for details.
	302 Value exceeds maximum number of objects allowed.
	303 The value must be an IP address in dotted format.
	305 Unsupported SNMP version.
	306 Unknown PDU type.
	307 The class is busy performing the current action.
	308 Verification failed.
	309 Missing password for Verification.
	310 Missing signature.
	311 Missing remote time.
	312 Missing timeout value.
	313 Decryption Failed.
	314 Missing password for decryption.
	315 Not encrypted.
	316 Security model not supported.
	317 Defective packet
	318 Not from bound point.
	319 Operation not permitted in current role.
	320 Bad packet.
	321 Message not authenticated.
	322 No such oid.
	323 Missing privacy parameter.
	324 Bad engine id.
	325 Bad time frame.
	326 Bad user name.
	327 Security level was not accepted.
	328 Discovery failed.
	329 Incorrect key length.
	330 No authentication password supplied.
	333 Returned OID was out of range. This is applicable only when WalkInsideRange is set to true.

TCPClient Errors


	100 You cannot change the RemotePort at this time. A connection is in progress.
	101 You cannot change the RemoteHost (Server) at this time. A connection is in progress.
	102 The RemoteHost address is invalid (0.0.0.0).
	104 Already connected. If you want to reconnect, close the current connection first.
	106 You cannot change the LocalPort at this time. A connection is in progress.
	107 You cannot change the LocalHost at this time. A connection is in progress.
	112 You cannot change MaxLineLength at this time. A connection is in progress.
	116 RemotePort cannot be zero. Please specify a valid service port number.
	117 You cannot change the UseConnection option while the class is active.
	135 Operation would block.
	201 Timeout.
	211 Action impossible in control's present state.
	212 Action impossible while not connected.
	213 Action impossible while listening.
	301 Timeout.
	302 Could not open file.
	434 Unable to convert string to selected CodePage.
	1105 Already connecting. If you want to reconnect, close the current connection first.
	1117 You need to connect first.
	1119 You cannot change the LocalHost at this time. A connection is in progress.
	1120 Connection dropped by remote host.

SSL Errors


	270 Cannot load specified security library.
	271 Cannot open certificate store.
	272 Cannot find specified certificate.
	273 Cannot acquire security credentials.
	274 Cannot find certificate chain.
	275 Cannot verify certificate chain.
	276 Error during handshake.
	280 Error verifying certificate.
	281 Could not find client certificate.
	282 Could not find server certificate.
	283 Error encrypting data.
	284 Error decrypting data.

TCP/IP Errors


	10004 [10004] Interrupted system call.
	10009 [10009] Bad file number.
	10013 [10013] Access denied.
	10014 [10014] Bad address.
	10022 [10022] Invalid argument.
	10024 [10024] Too many open files.
	10035 [10035] Operation would block.
	10036 [10036] Operation now in progress.
	10037 [10037] Operation already in progress.
	10038 [10038] Socket operation on non-socket.
	10039 [10039] Destination address required.
	10040 [10040] Message too long.
	10041 [10041] Protocol wrong type for socket.
	10042 [10042] Bad protocol option.
	10043 [10043] Protocol not supported.
	10044 [10044] Socket type not supported.
	10045 [10045] Operation not supported on socket.
	10046 [10046] Protocol family not supported.
	10047 [10047] Address family not supported by protocol family.
	10048 [10048] Address already in use.
	10049 [10049] Can't assign requested address.
	10050 [10050] Network is down.
	10051 [10051] Network is unreachable.
	10052 [10052] Net dropped connection or reset.
	10053 [10053] Software caused connection abort.
	10054 [10054] Connection reset by peer.
	10055 [10055] No buffer space available.
	10056 [10056] Socket is already connected.
	10057 [10057] Socket is not connected.
	10058 [10058] Can't send after socket shutdown.
	10059 [10059] Too many references, can't splice.
	10060 [10060] Connection timed out.
	10061 [10061] Connection refused.
	10062 [10062] Too many levels of symbolic links.
	10063 [10063] File name too long.
	10064 [10064] Host is down.
	10065 [10065] No route to host.
	10066 [10066] Directory not empty
	10067 [10067] Too many processes.
	10068 [10068] Too many users.
	10069 [10069] Disc Quota Exceeded.
	10070 [10070] Stale NFS file handle.
	10071 [10071] Too many levels of remote in path.
	10091 [10091] Network subsystem is unavailable.
	10092 [10092] WINSOCK DLL Version out of range.
	10093 [10093] Winsock not loaded yet.
	11001 [11001] Host not found.
	11002 [11002] Non-authoritative 'Host not found' (try again or check DNS setup).
	11003 [11003] Non-recoverable errors: FORMERR, REFUSED, NOTIMP.
	11004 [11004] Valid name, no data record (check DNS setup).