PPOP Configuration
The component accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, access to these internal properties is provided through the Config method.PPOP Configuration Settings
| Comment: The OpenPGP message comment.OpenPGP messages may contain a comment. This setting holds the comment (if any) after calling Decrypt, DecryptAndVerifySignature, or VerifySignature. | |||||||||
| ProcessAttachments: Whether or not to process attachments.This setting controls whether attachments are processed when calling Decrypt, DecryptAndVerifySignature, or VerifySignature. When set to True if an attachment is a valid OpenPGP message it will be decrypted and/or verified. If it is not a valid OpenPGP message it will be left as is. When set to False the attachments are not processed. The default value is True. | |||||||||
LogLevel: Specifies the level of detail that is logged.This setting controls the level of detail that is logged through the Status event. Possible values are:
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| RequireValidSignature: Specifies if an invalid signature is considered an error condition.By default, if the signature is not valid the component throws an exception. This setting may be set to False to disable this requirement. When False, the Status parameter of the VerificationStatus event should be checked to determine the result of the operation. The default value is True. | |||||||||
| SymmetricPassphrase: The password used for symmetric encryption or decryption.This setting specifies the passphrase when using symmetric encryption. If a value is provided, symmetric encryption/decryption will be attempted. In this case no keys are used for either encryption or decryption. Only Encrypt and Decrypt are valid operations when a value is set. Sign, SignAndEncrypt, VerifySignature, and DecryptAndVerifySignature are not valid operations when using this option. | |||||||||
| VersionHeader: The Version header value in the ASCII armored OpenPGP message.This setting specifies the Version header value included in the ASCII armored OpenPGP message.
This may be set before calling Encrypt, Sign, or SignAndEncrypt. The default
value is "IPWorks! OpenPGP v9.0".
This setting will be populated after calling Decrypt, VerifySignature, or DecryptAndVerifySignature. |
POP Configuration Settings
| AuthorizationIdentity: The value to use as the authorization identity when SASL authentication is used. When AuthMechanism is set to amSASLPlain or amSASLDigestMD5 you may use this setting to specify an authorization identity to be used when authenticating. | |
| GetMessageSize: Whether to poll the server for the message size prior to retrieving it.By default this value is False. When set to true, the component will retrieve the message size from the server before downloading it and the PercentDone parameter of the Transfer event will be populated. When this value is False (default), the PercentDone parameter of the Transfer event will not be updated and will evaluate to -1. | |
| IncludeHeaders: Whether to include message headers in the LocalFile.If set to true, the LocalFile will include the message headers in addition to the message body. | |
| MaxHeaders: Instructs component to save the amount of headers specified that are returned by the server after a Header event has been fired.This config should be set when the MessageHeaders collection
will be populated
when a Header event has been fired. This value
represents the number of headers that are to be saved in the collection
.
To save all items to the collection , set this config to -1. If no items are wanted, set this to 0, which will not save any to the collection . The default for this config is -1, so all items will be included in the collection . NOTE: This functionality is only available in Java and .NET. | |
| MaxLineLength: The maximum expected length for message lines.Normally, internet mail message lines are up to 80 bytes long, however, different mail systems might use other values. Change the value of this property if you are expecting longer lines. |
IPPort Configuration 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 component will use Timeout for establishing a connection and transmitting/receiving data. | |||||||||
| FirewallAutoDetect: Tells the component whether or not to automatically detect and use firewall system settings, if available.This is the same as AutoDetect. This setting is provided for use by components 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 is the same as Host. This setting is provided for use by components that do not directly expose Firewall properties. | |||||||||
| FirewallListener: If true, the component binds to a SOCKS firewall as a server (IPPort only).This entry is for IPPort only and does not work for other components that descend from IPPort.
If this entry is set, the component acts as a server. RemoteHost and RemotePort are used to tell the SOCKS firewall in which address and port to listen to. The firewall rules may ignore RemoteHost, and it is recommended that RemoteHost be set to empty string in this case. RemotePort is the port in which the firewall will listen to. If set to 0, the firewall will select a random port. The binding (address and port) is provided through the ConnectionStatus event. The connection to the firewall is made by calling the Connect method. | |||||||||
| 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 component throws an exception.
NOTE: This is the same as Password. This setting is provided for use by components that do not directly expose Firewall properties. | |||||||||
| FirewallPort: The TCP port for the FirewallHost;.Note that the FirewallPort is set automatically when FirewallType is set to a valid value.
NOTE: This is the same as Port. This setting is provided for use by components that do not directly expose Firewall properties. | |||||||||
FirewallType: Determines the type of firewall to connect through.The appropriate values are as follows:
NOTE: This is the same as FirewallType. This setting is provided for use by components 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 component throws an exception.
NOTE: This is the same as User. This setting is provided for use by components that do not directly expose Firewall properties. | |||||||||
| 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 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.
Note: This value is not applicable in Java. | |||||||||
| 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 acknowledgement is received from the remote host the keep-alive packet
will be re-sent. This 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 Java or MAC. | |||||||||
| 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), there are two scenarios for determining how long the connection will linger. The first, if LingerTime is 0 (default), the system will attempt to send pending data for a connection until the default IP protocol timeout expires. In the second scenario, 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 component returns control immediately, the system could hold system resources until all pending data is 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 (by a client acknowledgment, for example), 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, to leave the socket connection linger. This value is 0 by default, which means it will use the default IP protocol 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.
In multi-homed hosts (machines with more than one IP interface) setting LocalHost to the value of an interface will make the component initiate connections (or accept in the case of server components) only through that interface. If the component is connected, the LocalHost 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 TCP port in the local host where the component binds.
This must be set before a connection is
attempted. It instructs the component to bind to a specific
port (or communication endpoint) in the local machine.
Setting this 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. The maximum value is 65536 bytes. | |||||||||
| MaxTransferRate: The transfer rate limit in bytes per second.This 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. | |||||||||
| RecordLength: The length of received data records.If set to a positive value, this setting defines the length of data records to be received. The component will accumulate data
until RecordLength is reached and only then fire the DataIn event with data of length RecordLength.
This allows data to be received as records of known length. This value can be changed at any time, including within the DataIn event.
The default value is 0, meaning this setting is not used. | |||||||||
| 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. | |||||||||
UseIPv6: Whether to use IPv6.When set to 0 (default), the component will use IPv4 exclusively.
When set to 1, the component will use IPv6 exclusively. To instruct the component 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:
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| CloseStreamAfterTransfer: If true, the component will close the upload or download stream after the transfer.This setting determines whether the input or output stream is closed after the transfer completes. When set to True (default), all streams will be closed after a transfer is completed. In order to keep streams open after the transfer of data, set this to False. the default value is True. | |||||||||
| 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. |
SSL Configuration Settings
| ReuseSSLSession: Determines if the SSL session is reused.
If set to true, the component will reuse the context if and only if the following criteria are met:
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| 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. | |||||||||||||||||||||||||
| 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:
When the provider is OpenSSL, SSLCipherStrength is currently not supported. This functionality is instead made available through the OpenSSLCipherList config setting. TLS 1.1 and TLS1.2 support are only available starting with Windows 7. | |||||||||||||||||||||||||
| SSLProvider: The name of the security provider to use.
Change this setting to use security providers other than the system default.
Use this setting with caution. Disabling SSL security or pointing to the wrong provider could potentially cause serious security vulnerabilities in your application. The special value "*" (default) picks the default SSL provider defined in the system. Note: On Windows systems, the default SSL Provider is "Microsoft Unified Security Protocol Provider" and cannot be changed. | |||||||||||||||||||||||||
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:
This functionality is currently not available in Java or when the provider is OpenSSL. | |||||||||||||||||||||||||
| 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 component 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 UseManagedSecurityAPI is False (default):
obj.config("SSLEnabledCipherSuites=*");
obj.config("SSLEnabledCipherSuites=CALG_AES_256");
obj.config("SSLEnabledCipherSuites=CALG_AES_256;CALG_3DES");
Possible values when UseManagedSecurityAPI is False (default) include:
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 UseManagedSecurityAPI is True include:
SSLEnabledCipherSuites is used together with SSLCipherStrength. Note: This configuration setting is available only in .NET and Java. |
Socket Configuration 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 component 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 component is activated the OutBufferSize reverts to its defined size. The same happens if you attempt to make it too large or too small. |
Base Configuration Settings
| GUIAvailable: Tells the component whether or not a message loop is available for processing events.
In a GUI-based application, long-running blocking operations may cause the application to stop responding to input until the operation returns. The component will attempt to discover whether or not the application has a message loop and, if one is discovered, it will process events in that message loop during any such blocking operation.
In some non-GUI applications an invalid message loop may be discovered that will result in errant behavior. In these cases, setting GuiAvailable to false will ensure that the component does not attempt to process external events. | |
| UseBackgroundThread: Whether threads created by the component are background threads.If set to True, when the component creates a thread the thread's IsBackground property will be explicitly set to True. By default this setting is False. | |
| UseManagedSecurityAPI: Tells the component whether or not to use the system security libraries or a managed implementation.
By default the component will use the system security libraries to perform cryptographic functions. This means
calls to unmanaged code will be made. In certain environments this is not desirable. To use a completely managed security
implementation set this setting to True. Setting this to True tells the component to use the internal managed implementation
instead of using the system's security API.
Note that when this value is set the product's system dll is no longer required as a reference, as all unmanaged code is stored in this file. |