IMAPClient Component

Properties Methods Events Config Settings Errors

The IMAPClient component provides client-side functionality for IMAP4 (Internet Message Access Protocol).

Syntax

nsoftware.SecureBlackbox.IMAPClient

Remarks

Use this component to manage e-mail and retrieve e-mail messages from the remote IMAP servers.

Downloading only the recent messages to local files IMAPClient client = new IMAPClient(); client.Username= "user"; client.Password= "password"; client.Connect("mail.domain.com", 993); client.OpenMailbox("INBOX", true); client.ListMessages(Constants.imapMessageRecent, 0); foreach (IMAPMessageInfo info in client.Messages) client.ReceiveFile(info.UID, $"path\\{info.UID}.eml"); client.Disconnect();

Use Command and CommandReply events to get a session log. IMAPClient client = new IMAPClient(); client.OnCommand += (s, e) => { Console.WriteLine($"C: {e.Cmd}"); }; client.OnCommandReply += (s, e) => { Console.WriteLine($"S: {e.Reply}"); };

Property List

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


AccessToken	An OAuth 2.0 access token to authenticate to the server.
BlockedCertificates	The certificates that must be rejected as trust anchors.
ConnectionInfo	Returns the details of the underlying network connection.
FIPSMode	Reserved.
KnownCertificates	Additional certificates for chain validation.
KnownCRLs	Additional CRLs for chain validation.
KnownOCSPs	Additional OCSP responses for chain validation.
Mailbox	Returns the selected (active) mailbox info.
Message	Contains a pinned e-mail message.
Messages	Populates a list of messages returned by the last list call.
Password	The authentication password.
Proxy	The proxy server settings.
ServerInfo	Encapsulates information about the server.
SessionLog	Contains the complete log of the last session.
SocketSettings	Manages network connection settings.
TLSClientChain	The TLS client certificate chain.
TLSServerChain	The TLS server's certificate chain.
TLSSettings	Manages TLS layer settings.
TrustedCertificates	A list of trusted certificates for chain validation.
Username	The authentication username.

Method List

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


CloseMailbox	Closes the current mailbox.
Config	Sets or retrieves a configuration setting.
Connect	Establishes a connection to the IMAP server.
CopyMessage	Copies a message to another mailbox.
CreateMailbox	Creates a new mailbox.
DeleteMailbox	Deletes an existing mailbox.
Disconnect	Closes connection to the IMAP server.
DoAction	Performs an additional action.
GetMailboxInfo	Requests mailbox status.
ListMailboxes	Queries a list of mailboxes available on the server.
ListMessages	Queries a list of messages available in the currently selected on the server.
OpenMailbox	Opens the specified mailbox.
Ping	Sends a NOOP command to the IMAP server.
PostBytes	Uploads an e-mail message stored in a byte array.
PostFile	Uploads a message stored in a file to the current mailbox on the IMAP server.
PostMessage	Uploads a pre-built message to the current mailbox on the IMAP server.
PostStream	Uploads a message stored in a stream to the current mailbox on the IMAP server.
PurgeMessages	Permanently removes all deleted messages from the current mailbox.
ReceiveBytes	Downloads a message to a byte array.
ReceiveFile	Downloads a message to a file.
ReceiveMessage	Downloads a message.
ReceiveStream	Downloads a message to a stream.
RefreshMailbox	Refreshes info about the currently selected mailbox.
RenameMailbox	Renames an existing mailbox.
Reset	Resets the component settings.
UpdateMessage	Alters flags assotiated with a message in the current mailbox on the IMAP server.

Event List

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


AuthFailed	Fires when an authentication attempt has failed.
AuthStart	Fires when the authentication is about to be started.
AuthSucceeded	Fires when the authentication has succeeded.
Command	Reports a command sent to the server.
CommandData	Returns the data that accompanies the command.
CommandReply	Reports the receipt of a reply to a command.
CommandReplyData	Returns the data that accompanies a reply to a command.
Error	Provides information about errors during SMTP operations.
MailboxFound	Provides mailbox details
MailboxInfo	Reports mailbox information returned from the server.
Notification	This event notifies the application about an underlying control flow event.
Progress	Reports the progress of the data transfer operation.
TLSCertNeeded	Fires when a remote TLS party requests a client certificate.
TLSCertValidate	This event is fired upon receipt of the TLS server's certificate, allowing the user to control its acceptance.
TLSEstablished	Fires when a TLS handshake with Host successfully completes.
TLSHandshake	Fires when a new TLS handshake is initiated, before the handshake commences.
TLSPSK	Notifies the application about the PSK key exchange.
TLSShutdown	Reports the graceful closure of a TLS connection.

Config Settings

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


Authentications	Specifies enabled authentication methods and their priorities.
IdleAuto	Specifies whether idle mode should be requested automatically.
IdleTimeout	Specifies idle timeout in seconds.
IgnoreSystemTrust	Whether trusted Windows Certificate Stores should be treated as trusted.
ListCriteria	Specifies an advanced criteria for listing messages on the server.
MaxLineLength	Specifies maximum expected line length.
MessageHeaderZZZ[i]	A value of ZZZ header field for message i.
OtherHeaders	Specifies header fields to request when lists messages on the server.
SendingBufferSize	Specifies the size of the buffer used to post messages to the server.
SessionLogDetails	Specifies whether login credentials should be written to the session log.
StaticDNS	Specifies whether static DNS rules should be used.
StaticIPAddress[domain]	Gets or sets an IP address for the specified domain name.
StaticIPAddresses	Gets or sets all the static DNS rules.
TempPath	Path for storing temporary files.
TLSExtensions	TBD.
TLSPeerExtensions	TBD.
TLSSessionGroup	Specifies the group name of TLS sessions to be used for session resumption.
TLSSessionLifetime	Specifies lifetime in seconds of the cached TLS session.
TLSSessionPurgeInterval	Specifies how often the session cache should remove the expired TLS sessions.
TolerateMinorChainIssues	Whether to tolerate minor chain issues.
UseMicrosoftCTL	Enables or disables the automatic use of the Microsoft online certificate trust list.
UseSystemCertificates	Enables or disables the use of the system certificates.
ASN1UseGlobalTagCache	Controls whether ASN.1 module should use a global object cache.
AssignSystemSmartCardPins	Specifies whether CSP-level PINs should be assigned to CNG keys.
CheckKeyIntegrityBeforeUse	Enables or disable private key integrity check before use.
CookieCaching	Specifies whether a cookie cache should be used for HTTP(S) transports.
Cookies	Gets or sets local cookies for the component.
DefDeriveKeyIterations	Specifies the default key derivation algorithm iteration count.
DNSLocalSuffix	The suffix to assign for TLD names.
EnableClientSideSSLFFDHE	Enables or disables finite field DHE key exchange support in TLS clients.
GlobalCookies	Gets or sets global cookies for all the HTTP transports.
HardwareCryptoUsePolicy	The hardware crypto usage policy.
HttpUserAgent	Specifies the user agent name to be used by all HTTP clients.
HttpVersion	The HTTP version to use in any inner HTTP client components created.
IgnoreExpiredMSCTLSigningCert	Whether to tolerate the expired Windows Update signing certificate.
ListDelimiter	The delimiter character for multi-element lists.
LogDestination	Specifies the debug log destination.
LogDetails	Specifies the debug log details to dump.
LogFile	Specifies the debug log filename.
LogFilters	Specifies the debug log filters.
LogFlushMode	Specifies the log flush mode.
LogLevel	Specifies the debug log level.
LogMaxEventCount	Specifies the maximum number of events to cache before further action is taken.
LogRotationMode	Specifies the log rotation mode.
MaxASN1BufferLength	Specifies the maximal allowed length for ASN.1 primitive tag data.
MaxASN1TreeDepth	Specifies the maximal depth for processed ASN.1 trees.
OCSPHashAlgorithm	Specifies the hash algorithm to be used to identify certificates in OCSP requests.
OldClientSideRSAFallback	Specifies whether the SSH client should use a SHA1 fallback.
PKICache	Specifies which PKI elements (certificates, CRLs, OCSP responses) should be cached.
PKICachePath	Specifies the file system path where cached PKI data is stored.
ProductVersion	Returns the version of the SecureBlackbox library.
ServerSSLDHKeyLength	Sets the size of the TLS DHE key exchange group.
StaticDNS	Specifies whether static DNS rules should be used.
StaticIPAddress[domain]	Gets or sets an IP address for the specified domain name.
StaticIPAddresses	Gets or sets all the static DNS rules.
Tag	Allows to store any custom data.
TLSSessionGroup	Specifies the group name of TLS sessions to be used for session resumption.
TLSSessionLifetime	Specifies lifetime in seconds of the cached TLS session.
TLSSessionPurgeInterval	Specifies how often the session cache should remove the expired TLS sessions.
UseCRLObjectCaching	Specifies whether reuse of loaded CRL objects is enabled.
UseInternalRandom	Switches between SecureBlackbox-own and platform PRNGs.
UseLegacyAdESValidation	Enables legacy AdES validation mode.
UseOCSPResponseObjectCaching	Specifies whether reuse of loaded OCSP response objects is enabled.
UseOwnDNSResolver	Specifies whether the client components should use own DNS resolver.
UseSharedSystemStorages	Specifies whether the validation engine should use a global per-process copy of the system certificate stores.
UseSystemNativeSizeCalculation	An internal CryptoAPI access tweak.
UseSystemOAEPAndPSS	Enforces or disables the use of system-driven RSA OAEP and PSS computations.
UseSystemRandom	Enables or disables the use of the OS PRNG.
XMLRDNDescriptorName[OID]	Defines an OID mapping to descriptor names for the certificate's IssuerRDN or SubjectRDN.
XMLRDNDescriptorPriority[OID]	Specifies the priority of descriptor names associated with a specific OID.
XMLRDNDescriptorReverseOrder	Specifies whether to reverse the order of descriptors in RDN.
XMLRDNDescriptorSeparator	Specifies the separator used between descriptors in RDN.

AccessToken Property (IMAPClient Component)

An OAuth 2.0 access token to authenticate to the server.

public string AccessToken { get; set; }

Public Property AccessToken As String

Default Value

Remarks

Use this property to provide the access token to be used to authenticate to the destination server.

BlockedCertificates Property (IMAPClient Component)

The certificates that must be rejected as trust anchors.

Syntax

C#
VB.NET

public CertificateList BlockedCertificates { get; }

Public Property BlockedCertificates As CertificateList

Remarks

Use this property to provide a list of compromised or blocked certificates. Any chain containing a blocked certificate will fail validation.

This property is not available at design time.

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

ConnectionInfo Property (IMAPClient Component)

Returns the details of the underlying network connection.

Syntax

C#
VB.NET

public TLSConnectionInfo ConnectionInfo { get; }

Public ReadOnly Property ConnectionInfo As TLSConnectionInfo

Remarks

Use this property to learn about the connection setup, such as the protocol security details and amounts of data transferred each way.

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

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

FIPSMode Property (IMAPClient Component)

Reserved.

Syntax

C#
VB.NET

public bool FIPSMode { get; set; }

Public Property FIPSMode As Boolean

Default Value

False

Remarks

This property is reserved for future use.

KnownCertificates Property (IMAPClient Component)

Additional certificates for chain validation.

Syntax

C#
VB.NET

public CertificateList KnownCertificates { get; }

Public Property KnownCertificates As CertificateList

Remarks

Use this property to supply a list of additional certificates that might be needed for chain validation. An example of a scenario where you might want to do that is when intermediary CA certificates are absent from the standard system locations (or when there are no standard system locations), and therefore should be supplied to the component manually.

The purpose of the certificates to be added to this collection is roughly equivalent to that of the Intermediate Certification Authorities system store in Windows.

Do not add trust anchors or root certificates to this collection: add them to TrustedCertificates instead.

This property is not available at design time.

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

KnownCRLs Property (IMAPClient Component)

Additional CRLs for chain validation.

Syntax

C#
VB.NET

public CRLList KnownCRLs { get; }

Public Property KnownCRLs As CRLList

Remarks

Use this property to supply additional CRLs that might be needed for chain validation. This property may be helpful when a chain is validated in offline mode, and the associated CRLs are stored separately from the signed message or document.

This property is not available at design time.

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

KnownOCSPs Property (IMAPClient Component)

Additional OCSP responses for chain validation.

Syntax

C#
VB.NET

public OCSPResponseList KnownOCSPs { get; }

Public Property KnownOCSPs As OCSPResponseList

Remarks

Use this property to supply additional OCSP responses that might be needed for chain validation. This property may be helpful when a chain is validated in offline mode, and the associated OCSP responses are stored separately from the signed message or document.

This property is not available at design time.

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

Mailbox Property (IMAPClient Component)

Returns the selected (active) mailbox info.

Syntax

C#
VB.NET

public IMAPMailboxInfo Mailbox { get; }

Public ReadOnly Property Mailbox As IMAPMailboxInfo

Remarks

Use this property to access the status of the mailbox that is currently selected (active).

To update information in this property call RefreshMailbox.

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

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

Message Property (IMAPClient Component)

Contains a pinned e-mail message.

Syntax

C#
VB.NET

public MailMessage Message { get; set; }

Public Property Message As MailMessage

Remarks

Use this property to access an e-mail message that was just downloaded with a ReceiveMessage call, or assign it with a message to be uploaded with PostMessage call.

This property is not available at design time.

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

Messages Property (IMAPClient Component)

Populates a list of messages returned by the last list call.

Syntax

C#
VB.NET

public IMAPMessageInfoList Messages { get; }

Public ReadOnly Property Messages As IMAPMessageInfoList

Remarks

Use this property to access the details of messages after a call to one of the list methods.

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

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

Password Property (IMAPClient Component)

The authentication password.

Syntax

C#
VB.NET

public string Password { get; set; }

Public Property Password As String

Default Value

Remarks

Use this property to provide the password for authenticating to the IMAP server.

In order to use OAuth 2.0 authentication to access the IMAP server, use the AccessToken property instead.

Proxy Property (IMAPClient Component)

The proxy server settings.

Syntax

C#
VB.NET

public ProxySettings Proxy { get; }

Public ReadOnly Property Proxy As ProxySettings

Remarks

Use this property to tune up the proxy server settings.

This property is read-only.

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

ServerInfo Property (IMAPClient Component)

Encapsulates information about the server.

Syntax

C#
VB.NET

public IMAPServerInfo ServerInfo { get; }

Public ReadOnly Property ServerInfo As IMAPServerInfo

Remarks

Use this property after establishing a connection to the server to learn about the IMAP server's capabilities.

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

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

SessionLog Property (IMAPClient Component)

Contains the complete log of the last session.

Syntax

C#
VB.NET

public string SessionLog { get; }

Public ReadOnly Property SessionLog As String

Default Value

Remarks

Use this property to access the session log produced by the component. The log can be very useful when investigating connection issues.

See the SessionLogDetails config property for the log details settings.

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

SocketSettings Property (IMAPClient Component)

Manages network connection settings.

Syntax

C#
VB.NET

public SocketSettings SocketSettings { get; }

Public ReadOnly Property SocketSettings As SocketSettings

Remarks

Use this property to tune up network connection parameters.

This property is read-only.

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

TLSClientChain Property (IMAPClient Component)

The TLS client certificate chain.

Syntax

C#
VB.NET

public CertificateList TLSClientChain { get; }

Public Property TLSClientChain As CertificateList

Remarks

Assign a certificate chain to this property to enable TLS client authentication in the component. Note that the client's end-entity certificate should have a private key associated with it.

Use the CertificateStorage or CertificateManager components to import the certificate from a file, system store, or PKCS11 device.

This property is not available at design time.

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

TLSServerChain Property (IMAPClient Component)

The TLS server's certificate chain.

Syntax

C#
VB.NET

public CertificateList TLSServerChain { get; }

Public ReadOnly Property TLSServerChain As CertificateList

Remarks

Use this property to access the certificate chain sent by the TLS server. This property is ready to read when the TLSCertValidate event is fired by the client component.

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

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

TLSSettings Property (IMAPClient Component)

Manages TLS layer settings.

Syntax

C#
VB.NET

public TLSSettings TLSSettings { get; }

Public ReadOnly Property TLSSettings As TLSSettings

Remarks

Use this property to tune up the TLS layer parameters.

This property is read-only.

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

TrustedCertificates Property (IMAPClient Component)

A list of trusted certificates for chain validation.

Syntax

C#
VB.NET

public CertificateList TrustedCertificates { get; }

Public Property TrustedCertificates As CertificateList

Remarks

Use this property to supply a list of trusted certificates that might be needed for chain validation. An example of a scenario where you might want to do that is when root CA certificates are absent from the standard system locations (or when there are no standard system locations), and therefore should be supplied to the component manually.

The purpose of this certificate collection is largely the same as that of the Windows Trusted Root Certification Authorities system store.

Use this property with extreme care as it directly affects chain verifiability; a wrong certificate added to the trusted list may result in bad chains being accepted, and forfeited signatures being recognized as genuine. Only add certificates that originate from the parties that you know and trust.

This property is not available at design time.

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

Username Property (IMAPClient Component)

The authentication username.

Syntax

C#
VB.NET

public string Username { get; set; }

Public Property Username As String

Default Value

Remarks

Use this property to provide the username for authenticating to the IMAP server.

CloseMailbox Method (IMAPClient Component)

Closes the current mailbox.

Syntax

C#
VB.NET

public void CloseMailbox();

Public Sub CloseMailbox()

Remarks

Use this method to close (i.e. deselect) the currently selected mailbox.

Config Method (IMAPClient Component)

Sets or retrieves a configuration setting.

Syntax

C#
VB.NET

public string Config(string configurationString);

Public Function Config(ByVal ConfigurationString As String) As String

Remarks

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

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

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

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

Connect Method (IMAPClient Component)

Establishes a connection to the IMAP server.

Syntax

C#
VB.NET

public void Connect(string address, int port);

Public Sub Connect(ByVal Address As String, ByVal Port As Integer)

Remarks

Use this method to establish a connection to the IMAP server at Address and Port.

CopyMessage Method (IMAPClient Component)

Copies a message to another mailbox.

Syntax

C#
VB.NET

public void CopyMessage(int UID, string mailboxName);

Public Sub CopyMessage(ByVal UID As Integer, ByVal MailboxName As String)

Remarks

Copies a message specified by its UID to another mailbox.

CreateMailbox Method (IMAPClient Component)

Creates a new mailbox.

Syntax

C#
VB.NET

public void CreateMailbox(string name);

Public Sub CreateMailbox(ByVal Name As String)

Remarks

Call this method to create a new mailbox, providing the name via the Name parameter.

DeleteMailbox Method (IMAPClient Component)

Deletes an existing mailbox.

Syntax

C#
VB.NET

public void DeleteMailbox(string name);

Public Sub DeleteMailbox(ByVal Name As String)

Remarks

Call this method to delete a mailbox.

Disconnect Method (IMAPClient Component)

Closes connection to the IMAP server.

Syntax

C#
VB.NET

public void Disconnect();

Public Sub Disconnect()

Remarks

Call this method to gracefully terminate the connection.

DoAction Method (IMAPClient Component)

Performs an additional action.

Syntax

C#
VB.NET

public string DoAction(string actionID, string actionParams);

Public Function DoAction(ByVal ActionID As String, ByVal ActionParams As String) As String

Remarks

DoAction is a generic method available in every component. It is used to perform an additional action introduced after the product major release. The list of actions is not fixed, and may be flexibly extended over time.

The unique identifier (case insensitive) of the action is provided in the ActionID parameter.

ActionParams contains the value of a single parameter, or a list of multiple parameters for the action in the form of PARAM1=VALUE1;PARAM2=VALUE2;....

Common ActionIDs:


Action	Parameters	Returned value	Description
ResetTrustedListCache	none	none	Clears the cached list of trusted lists.
ResetCertificateCache	none	none	Clears the cached certificates.
ResetCRLCache	none	none	Clears the cached CRLs.
ResetOCSPResponseCache	none	none	Clears the cached OCSP responses.


Action	Parameters	Returned value
Search	A criteria for the SEARCH command. If the value is empty, the criteria is considered 'ALL'. For more details, see SEARCH command in RFC 3501	UIDs of messages relevant to the criteria, separated by a space

GetMailboxInfo Method (IMAPClient Component)

Requests mailbox status.

Syntax

C#
VB.NET

public void GetMailboxInfo(string name);

Public Sub GetMailboxInfo(ByVal Name As String)

Remarks

Requests status information of the specified mailbox and returns it using MailboxInfo event.

ListMailboxes Method (IMAPClient Component)

Queries a list of mailboxes available on the server.

Syntax

C#
VB.NET

public string ListMailboxes();

Public Function ListMailboxes() As String

Remarks

Use this method to request a list of mailboxes currently available on the server. The mailbox names are separated from each other with a CRLF sequence.

Another way to handle mailboxes is to subscribe to the MailboxFound event. Using the event, it's possible to get not only mailbox names but mailbox attributes as well.

ListMessages Method (IMAPClient Component)

Queries a list of messages available in the currently selected on the server.

Syntax

C#
VB.NET

public void ListMessages(int flagsSet, int flagsNotSet);

Public Sub ListMessages(ByVal FlagsSet As Integer, ByVal FlagsNotSet As Integer)

Remarks

Call this method to request a list of messages with the set or not set flags available in the current mailbox.

FlagsSet and FlagsNotSet are bit masks of the following values:


imapMessageAnswered	`0x01`	Message has been answered.
imapMessageDeleted	`0x02`	Message is 'deleted' for removal later.
imapMessageDraft	`0x04`	Message has not completed composition (marked as a draft).
imapMessageFlagged	`0x08`	Message is 'flagged' for urgent/special attention.
imapMessageRecent	`0x10`	Message is 'recently' arrived in this mailbox. This session is the first session to have been notified about this message.
imapMessageSeen	`0x20`	Message has been read.

If listed messages should have a flag set, pass it to FlagsSet. If listed messages should not have a flag, pass it to FlagsNotSet.

For example:

if you need messages with the "draft" flag set, add imapMessageDraft to FlagsSet;
if you need messages with no "seen" flag set, add imapMessageSeen to FlagsNotSet.

The flags in the parameters can be combined. For example, if you need messages with "answered" flag set but with no "flagged" flag set, pass imapMessageAnswered to FlagsSet and imapMessageFlagged to FlagsNotSet.

To list all the messages available in the selected mailbox, pass 0 to both parameters.

OpenMailbox Method (IMAPClient Component)

Opens the specified mailbox.

Syntax

C#
VB.NET

public void OpenMailbox(string name, bool readOnly);

Public Sub OpenMailbox(ByVal Name As String, ByVal ReadOnly As Boolean)

Remarks

Use this method to open (select) the specified mailbox on the server. Only one mailbox can be selected at a time. You can check the name of the currently selected mailbox using the Mailbox property.

Ping Method (IMAPClient Component)

Sends a NOOP command to the IMAP server.

Syntax

C#
VB.NET

public void Ping();

Public Sub Ping()

Remarks

This method sends a NOOP command to the server, effectively pinging the server and keeping the connection alive.

PostBytes Method (IMAPClient Component)

Uploads an e-mail message stored in a byte array.

Syntax

C#
VB.NET

public void PostBytes(byte[] bytes, int flags, string internalDate);

Public Sub PostBytes(ByVal Bytes As Byte(), ByVal Flags As Integer, ByVal InternalDate As String)

Remarks

Use this method to upload a message stored in a byte array specified by Bytes to Mailbox.

Supported flags are:


imapMessageAnswered	`0x01`	Message has been answered.
imapMessageDeleted	`0x02`	Message is 'deleted' for removal later.
imapMessageDraft	`0x04`	Message has not completed composition (marked as a draft).
imapMessageFlagged	`0x08`	Message is 'flagged' for urgent/special attention.
imapMessageRecent	`0x10`	Message is 'recently' arrived in this mailbox. This session is the first session to have been notified about this message.
imapMessageSeen	`0x20`	Message has been read.

PostFile Method (IMAPClient Component)

Uploads a message stored in a file to the current mailbox on the IMAP server.

Syntax

C#
VB.NET

public void PostFile(string fileName, int flags, string internalDate);

Public Sub PostFile(ByVal FileName As String, ByVal Flags As Integer, ByVal InternalDate As String)

Remarks

Use this method to upload an e-mail message stored in a file to Mailbox.

Supported flags are:


imapMessageAnswered	`0x01`	Message has been answered.
imapMessageDeleted	`0x02`	Message is 'deleted' for removal later.
imapMessageDraft	`0x04`	Message has not completed composition (marked as a draft).
imapMessageFlagged	`0x08`	Message is 'flagged' for urgent/special attention.
imapMessageRecent	`0x10`	Message is 'recently' arrived in this mailbox. This session is the first session to have been notified about this message.
imapMessageSeen	`0x20`	Message has been read.

PostMessage Method (IMAPClient Component)

Uploads a pre-built message to the current mailbox on the IMAP server.

Syntax

C#
VB.NET

public void PostMessage(int flags, string internalDate);

Public Sub PostMessage(ByVal Flags As Integer, ByVal InternalDate As String)

Remarks

Use this message to upload Message to Mailbox.

Supported flags are:


imapMessageAnswered	`0x01`	Message has been answered.
imapMessageDeleted	`0x02`	Message is 'deleted' for removal later.
imapMessageDraft	`0x04`	Message has not completed composition (marked as a draft).
imapMessageFlagged	`0x08`	Message is 'flagged' for urgent/special attention.
imapMessageRecent	`0x10`	Message is 'recently' arrived in this mailbox. This session is the first session to have been notified about this message.
imapMessageSeen	`0x20`	Message has been read.

PostStream Method (IMAPClient Component)

Uploads a message stored in a stream to the current mailbox on the IMAP server.

Syntax

C#
VB.NET

public void PostStream(System.IO.Stream stream, int flags, string internalDate);

Public Sub PostStream(ByVal Stream As System.IO.Stream, ByVal Flags As Integer, ByVal InternalDate As String)

Remarks

Use this message to upload a message provided in Stream to Mailbox.

Supported flags are:


imapMessageAnswered	`0x01`	Message has been answered.
imapMessageDeleted	`0x02`	Message is 'deleted' for removal later.
imapMessageDraft	`0x04`	Message has not completed composition (marked as a draft).
imapMessageFlagged	`0x08`	Message is 'flagged' for urgent/special attention.
imapMessageRecent	`0x10`	Message is 'recently' arrived in this mailbox. This session is the first session to have been notified about this message.
imapMessageSeen	`0x20`	Message has been read.

PurgeMessages Method (IMAPClient Component)

Permanently removes all deleted messages from the current mailbox.

Syntax

C#
VB.NET

public void PurgeMessages();

Public Sub PurgeMessages()

Remarks

Use this method to permanently remove all messages in Mailbox marked with the Deleted flag.

ReceiveBytes Method (IMAPClient Component)

Downloads a message to a byte array.

Syntax

C#
VB.NET

public byte[] ReceiveBytes(int UID);

Public Function ReceiveBytes(ByVal UID As Integer) As Byte()

Remarks

Use this method to download a server-side message to a byte array.

ReceiveFile Method (IMAPClient Component)

Downloads a message to a file.

Syntax

C#
VB.NET

public void ReceiveFile(int UID, string fileName);

Public Sub ReceiveFile(ByVal UID As Integer, ByVal FileName As String)

Remarks

Use this method to download a server-side message to a local file.

ReceiveMessage Method (IMAPClient Component)

Downloads a message.

Syntax

C#
VB.NET

public void ReceiveMessage(int UID);

Public Sub ReceiveMessage(ByVal UID As Integer)

Remarks

Use this method to download a server-side message to the Message object.

ReceiveStream Method (IMAPClient Component)

Downloads a message to a stream.

Syntax

C#
VB.NET

public void ReceiveStream(int UID, System.IO.Stream stream);

Public Sub ReceiveStream(ByVal UID As Integer, ByVal Stream As System.IO.Stream)

Remarks

Use this method to download a server-side message to a stream object.

RefreshMailbox Method (IMAPClient Component)

Refreshes info about the currently selected mailbox.

Syntax

C#
VB.NET

public void RefreshMailbox();

Public Sub RefreshMailbox()

Remarks

Use this method to refresh the Mailbox info.

To request information about other mailbox, call GetMailboxInfo.

RenameMailbox Method (IMAPClient Component)

Renames an existing mailbox.

Syntax

C#
VB.NET

public void RenameMailbox(string name, string newName);

Public Sub RenameMailbox(ByVal Name As String, ByVal NewName As String)

Remarks

Use this method to rename an existing mailbox from Name to NewName.

Reset Method (IMAPClient Component)

Resets the component settings.

Syntax

C#
VB.NET

public void Reset();

Public Sub Reset()

Remarks

Reset is a generic method available in every component.

UpdateMessage Method (IMAPClient Component)

Alters flags assotiated with a message in the current mailbox on the IMAP server.

Syntax

C#
VB.NET

public void UpdateMessage(int UID, int setFlags, int clearFlags);

Public Sub UpdateMessage(ByVal UID As Integer, ByVal SetFlags As Integer, ByVal ClearFlags As Integer)

Remarks

Use this method to alter flags associated with a UID message in the currently selected mailbox.

Supported flags are:


imapMessageAnswered	`0x01`	Message has been answered.
imapMessageDeleted	`0x02`	Message is 'deleted' for removal later.
imapMessageDraft	`0x04`	Message has not completed composition (marked as a draft).
imapMessageFlagged	`0x08`	Message is 'flagged' for urgent/special attention.
imapMessageRecent	`0x10`	Message is 'recently' arrived in this mailbox. This session is the first session to have been notified about this message.
imapMessageSeen	`0x20`	Message has been read.

If a flag is to be set, pass it to the SetFlags parameter. If a flag is to be cleared for a message, pass it to the ClearFlags parameter.

Notice: flags are cleared first, then set. So if you pass the same flag to both parameter, the flag will be set for the message.

AuthFailed Event (IMAPClient Component)

Fires when an authentication attempt has failed.

Syntax

C#
VB.NET

public event OnAuthFailedHandler OnAuthFailed;

public delegate void OnAuthFailedHandler(object sender, IMAPClientAuthFailedEventArgs e);

public class IMAPClientAuthFailedEventArgs : EventArgs {
  public string Auth { get; }
  public int ErrorCode { get; }
  public string ErrorMessage { get; }
  public string ServerReply { get; }
  public bool TryAgain { get; set; }
}

Public Event OnAuthFailed As OnAuthFailedHandler

Public Delegate Sub OnAuthFailedHandler(sender As Object, e As IMAPClientAuthFailedEventArgs)

Public Class IMAPClientAuthFailedEventArgs Inherits EventArgs
  Public ReadOnly Property Auth As String
  Public ReadOnly Property ErrorCode As Integer
  Public ReadOnly Property ErrorMessage As String
  Public ReadOnly Property ServerReply As String
  Public Property TryAgain As Boolean
End Class

Remarks

The component fires this event when an authentication attempt has failed for some reason.

Auth reports the authentication method that has failed. You can adjust the Authentications config property to try another method.

ErrorCode contains an error code, and ErrorMessage contains an error message.

ServerReply provides the error info reported by the server. This info depends on the transport protocol and on the authentication method.

Set the TryAgain parameter to true if the component should try to authenticate again. If the parameter remains false, the authentication will fail with an exception.

AuthStart Event (IMAPClient Component)

Fires when the authentication is about to be started.

Syntax

C#
VB.NET

public event OnAuthStartHandler OnAuthStart;

public delegate void OnAuthStartHandler(object sender, IMAPClientAuthStartEventArgs e);

public class IMAPClientAuthStartEventArgs : EventArgs {
  public string UsableAuths { get; }
}

Public Event OnAuthStart As OnAuthStartHandler

Public Delegate Sub OnAuthStartHandler(sender As Object, e As IMAPClientAuthStartEventArgs)

Public Class IMAPClientAuthStartEventArgs Inherits EventArgs
  Public ReadOnly Property UsableAuths As String
End Class

Remarks

The component fires this event when it has established the TCP connection and is ready to proceed to the user authentication step.

The UsableAuths parameter contains a comma-separated list of the authentication methods supported by both, the client and the server.

In this event handler it's possible to update the method list in the Authentications config property according to the provided list of usable methods. The full list of the authentication methods supported by the server is available in ServerInfo.SupportedAuths.

AuthSucceeded Event (IMAPClient Component)

Fires when the authentication has succeeded.

Syntax

C#
VB.NET

public event OnAuthSucceededHandler OnAuthSucceeded;

public delegate void OnAuthSucceededHandler(object sender, IMAPClientAuthSucceededEventArgs e);

public class IMAPClientAuthSucceededEventArgs : EventArgs {
  public string Auth { get; }
}

Public Event OnAuthSucceeded As OnAuthSucceededHandler

Public Delegate Sub OnAuthSucceededHandler(sender As Object, e As IMAPClientAuthSucceededEventArgs)

Public Class IMAPClientAuthSucceededEventArgs Inherits EventArgs
  Public ReadOnly Property Auth As String
End Class

Remarks

The component fires this event when it has succeeded to authenticate to the server. Auth reports the authentication method that has succeeded.

Command Event (IMAPClient Component)

Reports a command sent to the server.

Syntax

C#
VB.NET

public event OnCommandHandler OnCommand;

public delegate void OnCommandHandler(object sender, IMAPClientCommandEventArgs e);

public class IMAPClientCommandEventArgs : EventArgs {
  public string Cmd { get; }
}

Public Event OnCommand As OnCommandHandler

Public Delegate Sub OnCommandHandler(sender As Object, e As IMAPClientCommandEventArgs)

Public Class IMAPClientCommandEventArgs Inherits EventArgs
  Public ReadOnly Property Cmd As String
End Class

Remarks

The component fires this event whenever it sends an IMAP command to the server. Use CommandReply and CommandReplyData to track the server's responses.

CommandData Event (IMAPClient Component)

Returns the data that accompanies the command.

Syntax

C#
VB.NET

public event OnCommandDataHandler OnCommandData;

public delegate void OnCommandDataHandler(object sender, IMAPClientCommandDataEventArgs e);

public class IMAPClientCommandDataEventArgs : EventArgs {
  public string Cmd { get; }
  public string Data { get; }
}

Public Event OnCommandData As OnCommandDataHandler

Public Delegate Sub OnCommandDataHandler(sender As Object, e As IMAPClientCommandDataEventArgs)

Public Class IMAPClientCommandDataEventArgs Inherits EventArgs
  Public ReadOnly Property Cmd As String
  Public ReadOnly Property Data As String
End Class

Remarks

Subscribe to this event to access data accompanying the outgoing commands.

CommandReply Event (IMAPClient Component)

Reports the receipt of a reply to a command.

Syntax

C#
VB.NET

public event OnCommandReplyHandler OnCommandReply;

public delegate void OnCommandReplyHandler(object sender, IMAPClientCommandReplyEventArgs e);

public class IMAPClientCommandReplyEventArgs : EventArgs {
  public string Cmd { get; }
  public string Reply { get; }
}

Public Event OnCommandReply As OnCommandReplyHandler

Public Delegate Sub OnCommandReplyHandler(sender As Object, e As IMAPClientCommandReplyEventArgs)

Public Class IMAPClientCommandReplyEventArgs Inherits EventArgs
  Public ReadOnly Property Cmd As String
  Public ReadOnly Property Reply As String
End Class

Remarks

Use this event to track command replies sent in by the server. Use Command to track the commands sent out by the client, and CommandReplyData to access the reply data for commands that assume it.

CommandReplyData Event (IMAPClient Component)

Returns the data that accompanies a reply to a command.

Syntax

C#
VB.NET

public event OnCommandReplyDataHandler OnCommandReplyData;

public delegate void OnCommandReplyDataHandler(object sender, IMAPClientCommandReplyDataEventArgs e);

public class IMAPClientCommandReplyDataEventArgs : EventArgs {
  public string Cmd { get; }
  public string Data { get; }
}

Public Event OnCommandReplyData As OnCommandReplyDataHandler

Public Delegate Sub OnCommandReplyDataHandler(sender As Object, e As IMAPClientCommandReplyDataEventArgs)

Public Class IMAPClientCommandReplyDataEventArgs Inherits EventArgs
  Public ReadOnly Property Cmd As String
  Public ReadOnly Property Data As String
End Class

Remarks

Subscribe to this event to access data accompanying incoming command replies.

Error Event (IMAPClient Component)

Provides information about errors during SMTP operations.

Syntax

C#
VB.NET

public event OnErrorHandler OnError;

public delegate void OnErrorHandler(object sender, IMAPClientErrorEventArgs e);

public class IMAPClientErrorEventArgs : EventArgs {
  public int ErrorCode { get; }
  public string Description { get; }
}

Public Event OnError As OnErrorHandler

Public Delegate Sub OnErrorHandler(sender As Object, e As IMAPClientErrorEventArgs)

Public Class IMAPClientErrorEventArgs Inherits EventArgs
  Public ReadOnly Property ErrorCode As Integer
  Public ReadOnly Property Description As String
End Class

Remarks

This event is fired in case of exceptional conditions occured during SMTP operations.

ErrorCode contains an error code and Description contains a textual description of the error.

MailboxFound Event (IMAPClient Component)

Provides mailbox details

Syntax

C#
VB.NET

public event OnMailboxFoundHandler OnMailboxFound;

public delegate void OnMailboxFoundHandler(object sender, IMAPClientMailboxFoundEventArgs e);

public class IMAPClientMailboxFoundEventArgs : EventArgs {
  public string Name { get; }
  public string Delimiter { get; }
  public int Attributes { get; }
}

Public Event OnMailboxFound As OnMailboxFoundHandler

Public Delegate Sub OnMailboxFoundHandler(sender As Object, e As IMAPClientMailboxFoundEventArgs)

Public Class IMAPClientMailboxFoundEventArgs Inherits EventArgs
  Public ReadOnly Property Name As String
  Public ReadOnly Property Delimiter As String
  Public ReadOnly Property Attributes As Integer
End Class

Remarks

Subscribe to this event to get mailbox details published by ListMailboxes.

Delimiter is a mailbox hierarchy delimiter.

Attributes value is bit mask of the following values:


imapMailboxHasChildren	`0x0001`	Indicates whether the mailbox has \HasChildren attribute specified.
imapMailboxHasNoChildren	`0x0002`	Indicates whether the mailbox has \HasNoChildren attribute specified.
imapMailboxMarked	`0x0004`	Indicates whether the mailbox has \Marked attribute specified.
imapMailboxNoInferiors	`0x0008`	Indicates whether the mailbox has \NoInferiors attribute specified.
imapMailboxNoSelect	`0x0010`	Indicates whether the mailbox has \NoSelect attribute specified.
imapMailboxUnmarked	`0x0020`	Indicates whether the mailbox has \Unmarked attribute specified.

MailboxInfo Event (IMAPClient Component)

Reports mailbox information returned from the server.

Syntax

C#
VB.NET

public event OnMailboxInfoHandler OnMailboxInfo;

public delegate void OnMailboxInfoHandler(object sender, IMAPClientMailboxInfoEventArgs e);

public class IMAPClientMailboxInfoEventArgs : EventArgs {
  public string Name { get; }
  public int TotalMessages { get; }
  public int RecentMessages { get; }
  public int UnseenMessages { get; }
  public int NextUID { get; }
  public int UIDValidity { get; }
}

Public Event OnMailboxInfo As OnMailboxInfoHandler

Public Delegate Sub OnMailboxInfoHandler(sender As Object, e As IMAPClientMailboxInfoEventArgs)

Public Class IMAPClientMailboxInfoEventArgs Inherits EventArgs
  Public ReadOnly Property Name As String
  Public ReadOnly Property TotalMessages As Integer
  Public ReadOnly Property RecentMessages As Integer
  Public ReadOnly Property UnseenMessages As Integer
  Public ReadOnly Property NextUID As Integer
  Public ReadOnly Property UIDValidity As Integer
End Class

Remarks

Subscribe to this event to be notified of mailbox info as returned by the IMAP server on GetMailboxInfo call.

Notification Event (IMAPClient Component)

This event notifies the application about an underlying control flow event.

Syntax

C#
VB.NET

public event OnNotificationHandler OnNotification;

public delegate void OnNotificationHandler(object sender, IMAPClientNotificationEventArgs e);

public class IMAPClientNotificationEventArgs : EventArgs {
  public string EventID { get; }
  public string EventParam { get; }
}

Public Event OnNotification As OnNotificationHandler

Public Delegate Sub OnNotificationHandler(sender As Object, e As IMAPClientNotificationEventArgs)

Public Class IMAPClientNotificationEventArgs Inherits EventArgs
  Public ReadOnly Property EventID As String
  Public ReadOnly Property EventParam As String
End Class

Remarks

The component fires this event to let the application know about some event, occurrence, or milestone in the component. For example, it may fire to report completion of the document processing. The list of events being reported is not fixed, and may be flexibly extended over time.

The unique identifier of the event is provided in the EventID parameter. EventParam contains any parameters accompanying the occurrence. Depending on the type of the component, the exact action it is performing, or the document being processed, one or both may be omitted.


EventID		EventParam
MessageAdded		Number of messages in the current mailbox.
MessageDeleted		UID of the deleted message if the message is in the current message list.
MessageUpdated		UID of the updated message if the message is in the current message list.
TLSExtensions.CertificateStatus	TBD
TLSExtensions.PreSharedIdentityHint	TBD

Progress Event (IMAPClient Component)

Reports the progress of the data transfer operation.

Syntax

C#
VB.NET

public event OnProgressHandler OnProgress;

public delegate void OnProgressHandler(object sender, IMAPClientProgressEventArgs e);

public class IMAPClientProgressEventArgs : EventArgs {
  public long Total { get; }
  public long Current { get; }
  public bool Cancel { get; set; }
}

Public Event OnProgress As OnProgressHandler

Public Delegate Sub OnProgressHandler(sender As Object, e As IMAPClientProgressEventArgs)

Public Class IMAPClientProgressEventArgs Inherits EventArgs
  Public ReadOnly Property Total As Long
  Public ReadOnly Property Current As Long
  Public Property Cancel As Boolean
End Class

Remarks

The component fires this event repeatedly to report the progress of the data transfer operation.

TLSCertNeeded Event (IMAPClient Component)

Fires when a remote TLS party requests a client certificate.

Syntax

C#
VB.NET

public event OnTLSCertNeededHandler OnTLSCertNeeded;

public delegate void OnTLSCertNeededHandler(object sender, IMAPClientTLSCertNeededEventArgs e);

public class IMAPClientTLSCertNeededEventArgs : EventArgs {
  public string Host { get; }
  public string CANames { get; }
}

Public Event OnTLSCertNeeded As OnTLSCertNeededHandler

Public Delegate Sub OnTLSCertNeededHandler(sender As Object, e As IMAPClientTLSCertNeededEventArgs)

Public Class IMAPClientTLSCertNeededEventArgs Inherits EventArgs
  Public ReadOnly Property Host As String
  Public ReadOnly Property CANames As String
End Class

Remarks

This event fires to notify the implementation that a remote TLS server has requested a client certificate. The Host parameter identifies the host that makes a request, and the CANames parameter (optional, according to the TLS spec) advises on the accepted issuing CAs.

Use the TLSClientChain property in response to this event to provide the requested certificate. Please make sure the client certificate includes the associated private key. Note that you may set the certificates before the connection without waiting for this event to fire.

This event is preceded by the TLSHandshake event for the given host and, if the certificate was accepted, succeeded by the TLSEstablished event.

TLSCertValidate Event (IMAPClient Component)

This event is fired upon receipt of the TLS server's certificate, allowing the user to control its acceptance.

Syntax

C#
VB.NET

public event OnTLSCertValidateHandler OnTLSCertValidate;

public delegate void OnTLSCertValidateHandler(object sender, IMAPClientTLSCertValidateEventArgs e);

public class IMAPClientTLSCertValidateEventArgs : EventArgs {
  public string ServerHost { get; }
  public string ServerIP { get; }
  public bool Accept { get; set; }
}

Public Event OnTLSCertValidate As OnTLSCertValidateHandler

Public Delegate Sub OnTLSCertValidateHandler(sender As Object, e As IMAPClientTLSCertValidateEventArgs)

Public Class IMAPClientTLSCertValidateEventArgs Inherits EventArgs
  Public ReadOnly Property ServerHost As String
  Public ReadOnly Property ServerIP As String
  Public Property Accept As Boolean
End Class

Remarks

This event is fired during a TLS handshake. Use the TLSServerChain property to access the certificate chain. In general, components may contact a number of TLS endpoints during their work, depending on their configuration.

Accept is assigned in accordance with the outcome of the internal validation check performed by the component, and can be adjusted if needed.

TLSEstablished Event (IMAPClient Component)

Fires when a TLS handshake with Host successfully completes.

Syntax

C#
VB.NET

public event OnTLSEstablishedHandler OnTLSEstablished;

public delegate void OnTLSEstablishedHandler(object sender, IMAPClientTLSEstablishedEventArgs e);

public class IMAPClientTLSEstablishedEventArgs : EventArgs {
  public string Host { get; }
  public string Version { get; }
  public string Ciphersuite { get; }
  public byte[] ConnectionId { get; }
  public bool Abort { get; set; }
}

Public Event OnTLSEstablished As OnTLSEstablishedHandler

Public Delegate Sub OnTLSEstablishedHandler(sender As Object, e As IMAPClientTLSEstablishedEventArgs)

Public Class IMAPClientTLSEstablishedEventArgs Inherits EventArgs
  Public ReadOnly Property Host As String
  Public ReadOnly Property Version As String
  Public ReadOnly Property Ciphersuite As String
  Public ReadOnly Property ConnectionId As Byte()
  Public Property Abort As Boolean
End Class

Remarks

The component uses this event to notify the application about a successful completion of a TLS handshake.

The Version, Ciphersuite, and ConnectionId parameters indicate the security parameters of the new connection. Use the Abort parameter if you need to terminate the connection at this stage.

TLSHandshake Event (IMAPClient Component)

Fires when a new TLS handshake is initiated, before the handshake commences.

Syntax

C#
VB.NET

public event OnTLSHandshakeHandler OnTLSHandshake;

public delegate void OnTLSHandshakeHandler(object sender, IMAPClientTLSHandshakeEventArgs e);

public class IMAPClientTLSHandshakeEventArgs : EventArgs {
  public string Host { get; }
  public bool Abort { get; set; }
}

Public Event OnTLSHandshake As OnTLSHandshakeHandler

Public Delegate Sub OnTLSHandshakeHandler(sender As Object, e As IMAPClientTLSHandshakeEventArgs)

Public Class IMAPClientTLSHandshakeEventArgs Inherits EventArgs
  Public ReadOnly Property Host As String
  Public Property Abort As Boolean
End Class

Remarks

The component uses this event to notify the application about the start of a new TLS handshake to Host. If the handshake is successful, this event will be followed by the TLSEstablished event. If the server chooses to request a client certificate, the TLSCertNeeded event will also be fired.

TLSPSK Event (IMAPClient Component)

Notifies the application about the PSK key exchange.

Syntax

C#
VB.NET

public event OnTLSPSKHandler OnTLSPSK;

public delegate void OnTLSPSKHandler(object sender, IMAPClientTLSPSKEventArgs e);

public class IMAPClientTLSPSKEventArgs : EventArgs {
  public string Host { get; }
  public string Hint { get; }
}

Public Event OnTLSPSK As OnTLSPSKHandler

Public Delegate Sub OnTLSPSKHandler(sender As Object, e As IMAPClientTLSPSKEventArgs)

Public Class IMAPClientTLSPSKEventArgs Inherits EventArgs
  Public ReadOnly Property Host As String
  Public ReadOnly Property Hint As String
End Class

Remarks

The component fires this event to notify the application about the beginning of TLS-PSK key exchange with Host. The Hint parameter may be used by the server to identify the key or service to use. Use the PreSharedKey field of TLSSettings to provide the pre-shared key to the component.

TLSShutdown Event (IMAPClient Component)

Reports the graceful closure of a TLS connection.

Syntax

C#
VB.NET

public event OnTLSShutdownHandler OnTLSShutdown;

public delegate void OnTLSShutdownHandler(object sender, IMAPClientTLSShutdownEventArgs e);

public class IMAPClientTLSShutdownEventArgs : EventArgs {
  public string Host { get; }
}

Public Event OnTLSShutdown As OnTLSShutdownHandler

Public Delegate Sub OnTLSShutdownHandler(sender As Object, e As IMAPClientTLSShutdownEventArgs)

Public Class IMAPClientTLSShutdownEventArgs Inherits EventArgs
  Public ReadOnly Property Host As String
End Class

Remarks

This event notifies the application about the closure of an earlier established TLS connection. Note that only graceful connection closures are reported.

Certificate Type

Encapsulates an individual X.509 certificate.

Remarks

This type keeps and provides access to X.509 certificate details.

The following fields are available:

Fields

Bytes
byte[] (read-only)
Default: ""

Returns the raw certificate data in DER format.

CA
bool
Default: False

Indicates whether the certificate has a CA capability. For the certificate to be considered a CA, it must have its Basic Constraints extension set with the CA indicator enabled.

Set this field when generating a new certificate to have its Basic Constraints extension generated automatically.

CAKeyID
byte[] (read-only)
Default: ""

A unique identifier (fingerprint) of the CA certificate's cryptographic key.

Authority Key Identifier is a certificate extension which allows identification of certificates belonging to the same issuer, but with different public keys. It is a de-facto standard to include this extension in all certificates to facilitate chain building.

This setting cannot be set when generating a certificate as it always derives from another certificate property. CertificateManager generates this setting automatically if enough information is available to it: for self-signed certificates, this value is copied from the SubjectKeyID setting, and for lower-level certificates, from the parent certificate's subject key ID extension.

CertType
CertTypes (read-only)
Default: 0

Returns the type of the entity contained in the Certificate object.

A Certificate object can contain two types of cryptographic objects: a ready-to-use X.509 certificate, or a certificate request ("an unsigned certificate"). Certificate requests can be upgraded to full certificates by signing them with a CA certificate.

Use the CertificateManager component to load or create new certificate and certificate requests objects.

CRLDistributionPoints
string
Default: ""

Contains a list of locations of CRL distribution points used to check this certificate's validity. The list is taken from the respective certificate extension.

Use this field when generating a certificate to provide a list of CRL endpoints that should be made part of the new certificate.

The endpoints are provided as a list of CRLF-separated URLs. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the location separator.

Curve
string
Default: ""

Specifies the elliptic curve associated with the certificate's public key. This setting only applies to certificates containing EC keys.


SB_EC_SECP112R1	`SECP112R1`
SB_EC_SECP112R2	`SECP112R2`
SB_EC_SECP128R1	`SECP128R1`
SB_EC_SECP128R2	`SECP128R2`
SB_EC_SECP160K1	`SECP160K1`
SB_EC_SECP160R1	`SECP160R1`
SB_EC_SECP160R2	`SECP160R2`
SB_EC_SECP192K1	`SECP192K1`
SB_EC_SECP192R1	`SECP192R1`
SB_EC_SECP224K1	`SECP224K1`
SB_EC_SECP224R1	`SECP224R1`
SB_EC_SECP256K1	`SECP256K1`
SB_EC_SECP256R1	`SECP256R1`
SB_EC_SECP384R1	`SECP384R1`
SB_EC_SECP521R1	`SECP521R1`
SB_EC_SECT113R1	`SECT113R1`
SB_EC_SECT113R2	`SECT113R2`
SB_EC_SECT131R1	`SECT131R1`
SB_EC_SECT131R2	`SECT131R2`
SB_EC_SECT163K1	`SECT163K1`
SB_EC_SECT163R1	`SECT163R1`
SB_EC_SECT163R2	`SECT163R2`
SB_EC_SECT193R1	`SECT193R1`
SB_EC_SECT193R2	`SECT193R2`
SB_EC_SECT233K1	`SECT233K1`
SB_EC_SECT233R1	`SECT233R1`
SB_EC_SECT239K1	`SECT239K1`
SB_EC_SECT283K1	`SECT283K1`
SB_EC_SECT283R1	`SECT283R1`
SB_EC_SECT409K1	`SECT409K1`
SB_EC_SECT409R1	`SECT409R1`
SB_EC_SECT571K1	`SECT571K1`
SB_EC_SECT571R1	`SECT571R1`
SB_EC_PRIME192V1	`PRIME192V1`
SB_EC_PRIME192V2	`PRIME192V2`
SB_EC_PRIME192V3	`PRIME192V3`
SB_EC_PRIME239V1	`PRIME239V1`
SB_EC_PRIME239V2	`PRIME239V2`
SB_EC_PRIME239V3	`PRIME239V3`
SB_EC_PRIME256V1	`PRIME256V1`
SB_EC_C2PNB163V1	`C2PNB163V1`
SB_EC_C2PNB163V2	`C2PNB163V2`
SB_EC_C2PNB163V3	`C2PNB163V3`
SB_EC_C2PNB176W1	`C2PNB176W1`
SB_EC_C2TNB191V1	`C2TNB191V1`
SB_EC_C2TNB191V2	`C2TNB191V2`
SB_EC_C2TNB191V3	`C2TNB191V3`
SB_EC_C2ONB191V4	`C2ONB191V4`
SB_EC_C2ONB191V5	`C2ONB191V5`
SB_EC_C2PNB208W1	`C2PNB208W1`
SB_EC_C2TNB239V1	`C2TNB239V1`
SB_EC_C2TNB239V2	`C2TNB239V2`
SB_EC_C2TNB239V3	`C2TNB239V3`
SB_EC_C2ONB239V4	`C2ONB239V4`
SB_EC_C2ONB239V5	`C2ONB239V5`
SB_EC_C2PNB272W1	`C2PNB272W1`
SB_EC_C2PNB304W1	`C2PNB304W1`
SB_EC_C2TNB359V1	`C2TNB359V1`
SB_EC_C2PNB368W1	`C2PNB368W1`
SB_EC_C2TNB431R1	`C2TNB431R1`
SB_EC_NISTP192	`NISTP192`
SB_EC_NISTP224	`NISTP224`
SB_EC_NISTP256	`NISTP256`
SB_EC_NISTP384	`NISTP384`
SB_EC_NISTP521	`NISTP521`
SB_EC_NISTB163	`NISTB163`
SB_EC_NISTB233	`NISTB233`
SB_EC_NISTB283	`NISTB283`
SB_EC_NISTB409	`NISTB409`
SB_EC_NISTB571	`NISTB571`
SB_EC_NISTK163	`NISTK163`
SB_EC_NISTK233	`NISTK233`
SB_EC_NISTK283	`NISTK283`
SB_EC_NISTK409	`NISTK409`
SB_EC_NISTK571	`NISTK571`
SB_EC_GOSTCPTEST	`GOSTCPTEST`
SB_EC_GOSTCPA	`GOSTCPA`
SB_EC_GOSTCPB	`GOSTCPB`
SB_EC_GOSTCPC	`GOSTCPC`
SB_EC_GOSTCPXCHA	`GOSTCPXCHA`
SB_EC_GOSTCPXCHB	`GOSTCPXCHB`
SB_EC_BRAINPOOLP160R1	`BRAINPOOLP160R1`
SB_EC_BRAINPOOLP160T1	`BRAINPOOLP160T1`
SB_EC_BRAINPOOLP192R1	`BRAINPOOLP192R1`
SB_EC_BRAINPOOLP192T1	`BRAINPOOLP192T1`
SB_EC_BRAINPOOLP224R1	`BRAINPOOLP224R1`
SB_EC_BRAINPOOLP224T1	`BRAINPOOLP224T1`
SB_EC_BRAINPOOLP256R1	`BRAINPOOLP256R1`
SB_EC_BRAINPOOLP256T1	`BRAINPOOLP256T1`
SB_EC_BRAINPOOLP320R1	`BRAINPOOLP320R1`
SB_EC_BRAINPOOLP320T1	`BRAINPOOLP320T1`
SB_EC_BRAINPOOLP384R1	`BRAINPOOLP384R1`
SB_EC_BRAINPOOLP384T1	`BRAINPOOLP384T1`
SB_EC_BRAINPOOLP512R1	`BRAINPOOLP512R1`
SB_EC_BRAINPOOLP512T1	`BRAINPOOLP512T1`
SB_EC_CURVE25519	`CURVE25519`
SB_EC_CURVE448	`CURVE448`

Fingerprint
string (read-only)
Default: ""

Contains the fingerprint (a hash imprint) of this certificate.

While there is no formal standard defining what a fingerprint is, a SHA1 hash of the certificate's DER-encoded body is typically used.

FriendlyName
string (read-only)
Default: ""

Contains an associated alias (friendly name) of the certificate. The friendly name is not a property of a certificate: it is maintained by the certificate media rather than being included in its DER representation. Windows certificate stores are one example of media that does support friendly names.

HashAlgorithm
string
Default: ""

Provides means to set the hash algorithm to be used in the subsequent operation on the certificate (such as generation or key signing). It is not a property of a certificate; use SigAlgorithm to find out the hash algorithm that is part of the certificate signature.


SB_HASH_ALGORITHM_SHA1	`SHA1`
SB_HASH_ALGORITHM_SHA224	`SHA224`
SB_HASH_ALGORITHM_SHA256	`SHA256`
SB_HASH_ALGORITHM_SHA384	`SHA384`
SB_HASH_ALGORITHM_SHA512	`SHA512`
SB_HASH_ALGORITHM_MD2	`MD2`
SB_HASH_ALGORITHM_MD4	`MD4`
SB_HASH_ALGORITHM_MD5	`MD5`
SB_HASH_ALGORITHM_RIPEMD160	`RIPEMD160`
SB_HASH_ALGORITHM_CRC32	`CRC32`
SB_HASH_ALGORITHM_SSL3	`SSL3`
SB_HASH_ALGORITHM_GOST_R3411_1994	`GOST1994`
SB_HASH_ALGORITHM_WHIRLPOOL	`WHIRLPOOL`
SB_HASH_ALGORITHM_POLY1305	`POLY1305`
SB_HASH_ALGORITHM_SHA3_224	`SHA3_224`
SB_HASH_ALGORITHM_SHA3_256	`SHA3_256`
SB_HASH_ALGORITHM_SHA3_384	`SHA3_384`
SB_HASH_ALGORITHM_SHA3_512	`SHA3_512`
SB_HASH_ALGORITHM_BLAKE2S_128	`BLAKE2S_128`
SB_HASH_ALGORITHM_BLAKE2S_160	`BLAKE2S_160`
SB_HASH_ALGORITHM_BLAKE2S_224	`BLAKE2S_224`
SB_HASH_ALGORITHM_BLAKE2S_256	`BLAKE2S_256`
SB_HASH_ALGORITHM_BLAKE2B_160	`BLAKE2B_160`
SB_HASH_ALGORITHM_BLAKE2B_256	`BLAKE2B_256`
SB_HASH_ALGORITHM_BLAKE2B_384	`BLAKE2B_384`
SB_HASH_ALGORITHM_BLAKE2B_512	`BLAKE2B_512`
SB_HASH_ALGORITHM_SHAKE_128	`SHAKE_128`
SB_HASH_ALGORITHM_SHAKE_256	`SHAKE_256`
SB_HASH_ALGORITHM_SHAKE_128_LEN	`SHAKE_128_LEN`
SB_HASH_ALGORITHM_SHAKE_256_LEN	`SHAKE_256_LEN`

Issuer
string (read-only)
Default: ""

The common name of the certificate issuer (CA), typically a company name. This is part of a larger set of credentials available via IssuerRDN.

IssuerRDN
string
Default: ""

A list of Property=Value pairs that uniquely identify the certificate issuer.

Example: /C=US/O=Nationwide CA/CN=Web Certification Authority

KeyAlgorithm
string
Default: "0"

Specifies the public key algorithm of this certificate.


SB_CERT_ALGORITHM_ID_RSA_ENCRYPTION	`rsaEncryption`
SB_CERT_ALGORITHM_MD2_RSA_ENCRYPTION	`md2withRSAEncryption`
SB_CERT_ALGORITHM_MD5_RSA_ENCRYPTION	`md5withRSAEncryption`
SB_CERT_ALGORITHM_SHA1_RSA_ENCRYPTION	`sha1withRSAEncryption`
SB_CERT_ALGORITHM_ID_DSA	`id-dsa`
SB_CERT_ALGORITHM_ID_DSA_SHA1	`id-dsa-with-sha1`
SB_CERT_ALGORITHM_DH_PUBLIC	`dhpublicnumber`
SB_CERT_ALGORITHM_SHA224_RSA_ENCRYPTION	`sha224WithRSAEncryption`
SB_CERT_ALGORITHM_SHA256_RSA_ENCRYPTION	`sha256WithRSAEncryption`
SB_CERT_ALGORITHM_SHA384_RSA_ENCRYPTION	`sha384WithRSAEncryption`
SB_CERT_ALGORITHM_SHA512_RSA_ENCRYPTION	`sha512WithRSAEncryption`
SB_CERT_ALGORITHM_ID_RSAPSS	`id-RSASSA-PSS`
SB_CERT_ALGORITHM_ID_RSAOAEP	`id-RSAES-OAEP`
SB_CERT_ALGORITHM_RSASIGNATURE_RIPEMD160	`ripemd160withRSA`
SB_CERT_ALGORITHM_ID_ELGAMAL	`elGamal`
SB_CERT_ALGORITHM_SHA1_ECDSA	`ecdsa-with-SHA1`
SB_CERT_ALGORITHM_RECOMMENDED_ECDSA	`ecdsa-recommended`
SB_CERT_ALGORITHM_SHA224_ECDSA	`ecdsa-with-SHA224`
SB_CERT_ALGORITHM_SHA256_ECDSA	`ecdsa-with-SHA256`
SB_CERT_ALGORITHM_SHA384_ECDSA	`ecdsa-with-SHA384`
SB_CERT_ALGORITHM_SHA512_ECDSA	`ecdsa-with-SHA512`
SB_CERT_ALGORITHM_EC	`id-ecPublicKey`
SB_CERT_ALGORITHM_SPECIFIED_ECDSA	`ecdsa-specified`
SB_CERT_ALGORITHM_GOST_R3410_1994	`id-GostR3410-94`
SB_CERT_ALGORITHM_GOST_R3410_2001	`id-GostR3410-2001`
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_1994	`id-GostR3411-94-with-GostR3410-94`
SB_CERT_ALGORITHM_GOST_R3411_WITH_R3410_2001	`id-GostR3411-94-with-GostR3410-2001`
SB_CERT_ALGORITHM_SHA1_ECDSA_PLAIN	`ecdsa-plain-SHA1`
SB_CERT_ALGORITHM_SHA224_ECDSA_PLAIN	`ecdsa-plain-SHA224`
SB_CERT_ALGORITHM_SHA256_ECDSA_PLAIN	`ecdsa-plain-SHA256`
SB_CERT_ALGORITHM_SHA384_ECDSA_PLAIN	`ecdsa-plain-SHA384`
SB_CERT_ALGORITHM_SHA512_ECDSA_PLAIN	`ecdsa-plain-SHA512`
SB_CERT_ALGORITHM_RIPEMD160_ECDSA_PLAIN	`ecdsa-plain-RIPEMD160`
SB_CERT_ALGORITHM_WHIRLPOOL_RSA_ENCRYPTION	`whirlpoolWithRSAEncryption`
SB_CERT_ALGORITHM_ID_DSA_SHA224	`id-dsa-with-sha224`
SB_CERT_ALGORITHM_ID_DSA_SHA256	`id-dsa-with-sha256`
SB_CERT_ALGORITHM_SHA3_224_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-sha3-224`
SB_CERT_ALGORITHM_SHA3_256_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-sha3-256`
SB_CERT_ALGORITHM_SHA3_384_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-sha3-384`
SB_CERT_ALGORITHM_SHA3_512_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-sha3-512`
SB_CERT_ALGORITHM_SHA3_224_ECDSA	`id-ecdsa-with-sha3-224`
SB_CERT_ALGORITHM_SHA3_256_ECDSA	`id-ecdsa-with-sha3-256`
SB_CERT_ALGORITHM_SHA3_384_ECDSA	`id-ecdsa-with-sha3-384`
SB_CERT_ALGORITHM_SHA3_512_ECDSA	`id-ecdsa-with-sha3-512`
SB_CERT_ALGORITHM_SHA3_224_ECDSA_PLAIN	`id-ecdsa-plain-with-sha3-224`
SB_CERT_ALGORITHM_SHA3_256_ECDSA_PLAIN	`id-ecdsa-plain-with-sha3-256`
SB_CERT_ALGORITHM_SHA3_384_ECDSA_PLAIN	`id-ecdsa-plain-with-sha3-384`
SB_CERT_ALGORITHM_SHA3_512_ECDSA_PLAIN	`id-ecdsa-plain-with-sha3-512`
SB_CERT_ALGORITHM_ID_DSA_SHA3_224	`id-dsa-with-sha3-224`
SB_CERT_ALGORITHM_ID_DSA_SHA3_256	`id-dsa-with-sha3-256`
SB_CERT_ALGORITHM_BLAKE2S_128_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2s128`
SB_CERT_ALGORITHM_BLAKE2S_160_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2s160`
SB_CERT_ALGORITHM_BLAKE2S_224_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2s224`
SB_CERT_ALGORITHM_BLAKE2S_256_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2s256`
SB_CERT_ALGORITHM_BLAKE2B_160_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2b160`
SB_CERT_ALGORITHM_BLAKE2B_256_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2b256`
SB_CERT_ALGORITHM_BLAKE2B_384_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2b384`
SB_CERT_ALGORITHM_BLAKE2B_512_RSA_ENCRYPTION	`id-rsassa-pkcs1-v1_5-with-blake2b512`
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSA	`id-ecdsa-with-blake2s128`
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSA	`id-ecdsa-with-blake2s160`
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSA	`id-ecdsa-with-blake2s224`
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSA	`id-ecdsa-with-blake2s256`
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSA	`id-ecdsa-with-blake2b160`
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSA	`id-ecdsa-with-blake2b256`
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSA	`id-ecdsa-with-blake2b384`
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSA	`id-ecdsa-with-blake2b512`
SB_CERT_ALGORITHM_BLAKE2S_128_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2s128`
SB_CERT_ALGORITHM_BLAKE2S_160_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2s160`
SB_CERT_ALGORITHM_BLAKE2S_224_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2s224`
SB_CERT_ALGORITHM_BLAKE2S_256_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2s256`
SB_CERT_ALGORITHM_BLAKE2B_160_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2b160`
SB_CERT_ALGORITHM_BLAKE2B_256_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2b256`
SB_CERT_ALGORITHM_BLAKE2B_384_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2b384`
SB_CERT_ALGORITHM_BLAKE2B_512_ECDSA_PLAIN	`id-ecdsa-plain-with-blake2b512`
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_224	`id-dsa-with-blake2s224`
SB_CERT_ALGORITHM_ID_DSA_BLAKE2S_256	`id-dsa-with-blake2s256`
SB_CERT_ALGORITHM_EDDSA_ED25519	`id-Ed25519`
SB_CERT_ALGORITHM_EDDSA_ED448	`id-Ed448`
SB_CERT_ALGORITHM_EDDSA_ED25519_PH	`id-Ed25519ph`
SB_CERT_ALGORITHM_EDDSA_ED448_PH	`id-Ed448ph`
SB_CERT_ALGORITHM_EDDSA	`id-EdDSA`
SB_CERT_ALGORITHM_EDDSA_SIGNATURE	`id-EdDSA-sig`

Use the KeyBits, Curve, and PublicKeyBytes fields to get more details about the key the certificate contains.

KeyBits
int (read-only)
Default: 0

Returns the length of the public key in bits.

This value indicates the length of the principal cryptographic parameter of the key, such as the length of the RSA modulus or ECDSA field. The key data returned by the PublicKeyBytes or PrivateKeyBytes field would typically contain auxiliary values, and therefore be longer.

KeyFingerprint
string (read-only)
Default: ""

Returns a SHA1 fingerprint of the public key contained in the certificate.

Note that the key fingerprint is different from the certificate fingerprint accessible via the Fingerprint field. The key fingeprint uniquely identifies the public key, and so can be the same for multiple certificates containing the same key.

KeyUsage
int
Default: 0

Indicates the purposes of the key contained in the certificate, in the form of an OR'ed flag set.

This value is a bit mask of the following values:


ckuUnknown	`0x00000`	Unknown key usage
ckuDigitalSignature	`0x00001`	Digital signature
ckuNonRepudiation	`0x00002`	Non-repudiation
ckuKeyEncipherment	`0x00004`	Key encipherment
ckuDataEncipherment	`0x00008`	Data encipherment
ckuKeyAgreement	`0x00010`	Key agreement
ckuKeyCertSign	`0x00020`	Certificate signing
ckuCRLSign	`0x00040`	Revocation signing
ckuEncipherOnly	`0x00080`	Encipher only
ckuDecipherOnly	`0x00100`	Decipher only
ckuServerAuthentication	`0x00200`	Server authentication
ckuClientAuthentication	`0x00400`	Client authentication
ckuCodeSigning	`0x00800`	Code signing
ckuEmailProtection	`0x01000`	Email protection
ckuTimeStamping	`0x02000`	Timestamping
ckuOCSPSigning	`0x04000`	OCSP signing
ckuSmartCardLogon	`0x08000`	Smartcard logon
ckuKeyPurposeClientAuth	`0x10000`	Kerberos - client authentication
ckuKeyPurposeKDC	`0x20000`	Kerberos - KDC

Set this field before generating the certificate to propagate the key usage flags to the new certificate.

KeyValid
bool (read-only)
Default: False

Returns True if the certificate's key is cryptographically valid, and False otherwise.

OCSPLocations
string
Default: ""

Locations of OCSP services that can be used to check this certificate's validity in real time, as recorded by the CA.

Set this field before calling the certificate manager's Generate method to propagate it to the new certificate.

The OCSP locations are provided as a list of CRLF-separated URLs. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the location separator.

OCSPNoCheck
bool
Default: False

Accessor to the value of the certificate's ocsp-no-check extension.

Origin
int (read-only)
Default: 0

Returns the location that the certificate was taken or loaded from.

PolicyIDs
string
Default: ""

Contains identifiers (OIDs) of the applicable certificate policies.

The Certificate Policies extension identifies a sequence of policies under which the certificate has been issued, and which regulate its usage.

Set this field when generating a certificate to propagate the policies information to the new certificate.

The policies are provided as a list of CRLF-separated entries. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the policy element separator.

PrivateKeyBytes
byte[] (read-only)
Default: ""

Returns the certificate's private key in DER-encoded format. It is normal for this field to be empty if the private key is non-exportable, which, for example, is typical for certificates originating from hardware security devices.

PrivateKeyExists
bool (read-only)
Default: False

Indicates whether the certificate has a usable private key associated with it. If it is set to True, the certificate can be used for private key operations, such as signing or decryption.

This field is independent from PrivateKeyBytes, and can be set to True even if the former is empty. This would imply that the private key is non-exportable, but still can be used for cryptographic operations.

PrivateKeyExtractable
bool (read-only)
Default: False

Indicates whether the private key is extractable (exportable).

PublicKeyBytes
byte[] (read-only)
Default: ""

Contains the certificate's public key in DER format.

This typically would contain an ASN.1-encoded public key value. The exact format depends on the type of the public key contained in the certificate.

Qualified
bool (read-only)
Default: False

Indicates whether the certificate is qualified.

This property is set to True if the certificate is confirmed by a Trusted List to be qualified.

QualifiedStatements
QualifiedStatementsTypes
Default: 0

Returns a simplified qualified status of the certificate.

Qualifiers
string (read-only)
Default: ""

A list of qualifiers.

Contains a comma-separated list of qualifier aliases for the certificate, for example QCP-n-qscd,QCWithSSCD.

SelfSigned
bool (read-only)
Default: False

Indicates whether the certificate is self-signed (root) or signed by an external CA.

SerialNumber
byte[]
Default: ""

Returns the certificate's serial number.

The serial number is a binary string that uniquely identifies a certificate among others issued by the same CA. According to the X.509 standard, the (issuer, serial number) pair should be globally unique to facilitate chain building.

SigAlgorithm
string (read-only)
Default: ""

Indicates the algorithm that was used by the CA to sign this certificate.

A signature algorithm typically combines hash and public key algorithms together, such as sha256WithRSAEncryption or ecdsa-with-SHA256.

Source
PKISources (read-only)
Default: 0

Returns the source (location or disposition) of a cryptographic primitive entity, such as a certificate, CRL, or OCSP response.

Subject
string (read-only)
Default: ""

The common name of the certificate holder, typically an individual's name, a URL, an e-mail address, or a company name. This is part of a larger set of credentials available via SubjectRDN.

SubjectAlternativeName
string
Default: ""

Returns or sets the value of the Subject Alternative Name extension of the certificate.

Subject alternative names are used to provide additional names that are impractical to store in the main SubjectRDN field. For example, it is often used to store all the domain names that a TLS certificate is authorized to protect.

The alternative names are provided as a list of CRLF-separated entries. Note that this differs from the behaviour used in earlier product versions, where the "|" character was used as the element separator.

SubjectKeyID
byte[]
Default: ""

Contains a unique identifier of the certificate's cryptographic key.

Subject Key Identifier is a certificate extension which allows a specific public key to be associated with a certificate holder. Typically, subject key identifiers of CA certificates are recorded as respective CA key identifiers in the subordinate certificates that they issue, which facilitates chain building.

The SubjectKeyID and CAKeyID fields of self-signed certificates typically contain identical values, as in that specific case, the issuer and the subject are the same entity.

SubjectRDN
string
Default: ""

A list of Property=Value pairs that uniquely identify the certificate holder (subject).

Depending on the purpose of the certificate and the policies of the CA that issued it, the values included in the subject record may differ drastically and contain business or personal names, web URLs, email addresses, and other data.

Example: /C=US/O=Oranges and Apples, Inc./OU=Accounts Receivable/1.2.3.4.5=Value with unknown OID/CN=Margaret Watkins.

Valid
bool (read-only)
Default: False

Indicates whether or not the signature over the certificate or the request is valid and matches the public key contained in the CA certificate/request.

ValidFrom
string
Default: ""

The time point at which the certificate becomes valid, in UTC.

ValidTo
string
Default: ""

The time point at which the certificate expires, in UTC.

Constructors

C#
VB.NET

public Certificate(byte[] bytes, int startIndex, int count, string password);

Public Certificate(ByVal Bytes As Byte(), ByVal StartIndex As Integer, ByVal Count As Integer, ByVal Password As String)

Loads the X.509 certificate from a memory buffer. Bytes is a buffer containing the raw certificate data. StartIndex and Count specify the starting position and number of bytes to be read from the buffer, respectively. Password is a password encrypting the certificate.

C#
VB.NET

public Certificate(byte[] certBytes, int certStartIndex, int certCount, byte[] keyBytes, int keyStartIndex, int keyCount, string password);

Public Certificate(ByVal CertBytes As Byte(), ByVal CertStartIndex As Integer, ByVal CertCount As Integer, ByVal KeyBytes As Byte(), ByVal KeyStartIndex As Integer, ByVal KeyCount As Integer, ByVal Password As String)

Loads the X.509 certificate from a memory buffer.

CertBytes is a buffer containing the raw certificate data. CertStartIndex and CertCount specify the starting position and number of bytes to be read from the buffer, respectively.

KeyBytes is a buffer containing the private key data. KeyStartIndex and KeyCount specify the starting position and number of bytes to be read from the buffer, respectively.

Password is a password encrypting the certificate.

C#
VB.NET

public Certificate(byte[] bytes, int startIndex, int count);

Public Certificate(ByVal Bytes As Byte(), ByVal StartIndex As Integer, ByVal Count As Integer)

C#
VB.NET

public Certificate(string path, string password);

Public Certificate(ByVal Path As String, ByVal Password As String)

Loads the X.509 certificate from a file. Path specifies the full path to the file containing the certificate data. Password is a password encrypting the certificate.

C#
VB.NET

public Certificate(string certPath, string keyPath, string password);

Public Certificate(ByVal CertPath As String, ByVal KeyPath As String, ByVal Password As String)

Loads the X.509 certificate from a file. CertPath specifies the full path to the file containing the certificate data. KeyPath specifies the full path to the file containing the private key. Password is a password encrypting the certificate.

C#
VB.NET

public Certificate(string path);

Public Certificate(ByVal Path As String)

Loads the X.509 certificate from a file. Path specifies the full path to the file containing the certificate data.

C#
VB.NET

public Certificate(System.IO.Stream stream);

Public Certificate(ByVal Stream As System.IO.Stream)

Loads the X.509 certificate from a stream. Stream is a stream containing the certificate data.

C#
VB.NET

public Certificate(System.IO.Stream stream, string password);

Public Certificate(ByVal Stream As System.IO.Stream, ByVal Password As String)

Loads the X.509 certificate from a stream. Stream is a stream containing the certificate data. Password is a password encrypting the certificate.

C#
VB.NET

public Certificate(System.IO.Stream certStream, System.IO.Stream keyStream, string password);

Public Certificate(ByVal CertStream As System.IO.Stream, ByVal KeyStream As System.IO.Stream, ByVal Password As String)

Loads the X.509 certificate from a stream. CertStream is a stream containing the certificate data. KeyStream is a stream containing the private key. Password is a password encrypting the certificate.

C#
VB.NET

public Certificate();

Public Certificate()

Creates a new object with default field values.

CRL Type

Represents a Certificate Revocation List.

Remarks

CRLs store information about revoked certificates, i.e., certificates that have been identified as invalid by their issuing certificate authority (CA) for any number of reasons.

Each CRL object lists certificates from a single CA and identifies them by their serial numbers. A CA may or may not publish a CRL, may publish several CRLs, or may publish the same CRL in multiple locations.

Unlike OCSP responses, CRLs only list certificates that have been revoked. They do not list certificates that are still valid.

The following fields are available:

Fields

Bytes
byte[] (read-only)
Default: ""

Returns the raw CRL data in DER format.

CAKeyID
byte[]
Default: ""

A unique identifier (fingerprint) of the CA certificate's private key, if present in the CRL.

EntryCount
int (read-only)
Default: 0

Returns the number of certificate status entries in the CRL.

Issuer
string (read-only)
Default: ""

The common name of the CRL issuer (CA), typically a company name.

IssuerRDN
string (read-only)
Default: ""

A collection of information, in the form of [OID, Value] pairs, uniquely identifying the CRL issuer.

Location
string (read-only)
Default: ""

The URL that the CRL was downloaded from.

NextUpdate
string
Default: ""

The planned time and date of the next version of this CRL to be published.

SigAlgorithm
string
Default: "0"

The public key algorithm that was used by the CA to sign this CRL.

Source
PKISources (read-only)
Default: 0

Returns the source (location or disposition) of a cryptographic primitive entity, such as a certificate, CRL, or OCSP response.

TBS
byte[] (read-only)
Default: ""

The to-be-signed part of the CRL (the CRL without the signature part).

ThisUpdate
string
Default: ""

The date and time at which this version of the CRL was published.

Constructors

C#
VB.NET

public CRL(byte[] bytes, int startIndex, int count);

Public CRL(ByVal Bytes As Byte(), ByVal StartIndex As Integer, ByVal Count As Integer)

Creates a CRL object from a memory buffer. Bytes is a buffer containing raw (DER) CRL data, StartIndex and Count specify the starting position and the length of the CRL data in the buffer, respectively.

C#
VB.NET

public CRL(string location);

Public CRL(ByVal Location As String)

Creates a CRL object by downloading it from a remote location.

C#
VB.NET

public CRL(System.IO.Stream stream);

Public CRL(ByVal Stream As System.IO.Stream)

Creates a CRL object from data contained in a stream.

C#
VB.NET

public CRL();

Public CRL()

Creates an empty CRL object.

IMAPMailboxInfo Type

Contains information about an IMAP mailbox.

Remarks

This compound object provides details of an IMAP mailbox.

The following fields are available:

Fields

MessageFlags
int (read-only)
Default: 0

Contains message flags defined in the mailbox.


imapMessageAnswered	`0x01`	Message has been answered.
imapMessageDeleted	`0x02`	Message is 'deleted' for removal later.
imapMessageDraft	`0x04`	Message has not completed composition (marked as a draft).
imapMessageFlagged	`0x08`	Message is 'flagged' for urgent/special attention.
imapMessageRecent	`0x10`	Message is 'recently' arrived in this mailbox. This session is the first session to have been notified about this message.
imapMessageSeen	`0x20`	Message has been read.

Name
string (read-only)
Default: ""

Specifies mailbox name.

NextUID
int (read-only)
Default: 0

Returns the next unique identifier value.

Use this property to get or set the next unique identifier (corresponds to UIDNEXT status code).

PermanentFlags
int (read-only)
Default: 0

Contains a list of message flags that can be changed permanently.


imapMessageAnswered	`0x01`	Message has been answered.
imapMessageDeleted	`0x02`	Message is 'deleted' for removal later.
imapMessageDraft	`0x04`	Message has not completed composition (marked as a draft).
imapMessageFlagged	`0x08`	Message is 'flagged' for urgent/special attention.
imapMessageRecent	`0x10`	Message is 'recently' arrived in this mailbox. This session is the first session to have been notified about this message.
imapMessageSeen	`0x20`	Message has been read.

ReadOnly
bool (read-only)
Default: False

Specifies whether the mailbox is write-protected.

RecentMessages
int (read-only)
Default: 0

The number of recent messages in the mailbox.

TotalMessages
int (read-only)
Default: 0

Total number of messages in the mailbox.

UIDValidity
int (read-only)
Default: 0

Specifies UID validity value.

UnseenMessages
int (read-only)
Default: 0

The number of unseen messages in the mailbox.

IMAPMessageInfo Type

This type is a container for the server-side message details.

Remarks

Use this type to get the details of server-side messages after the list call.

The following fields are available:

Fields

Date
string (read-only)
Default: ""

Contains the value of the Date header field.

Flags
int (read-only)
Default: 0

Returns the flags currently set to the mail message.

Supported flags are:


imapMessageAnswered	`0x01`	Message has been answered.
imapMessageDeleted	`0x02`	Message is 'deleted' for removal later.
imapMessageDraft	`0x04`	Message has not completed composition (marked as a draft).
imapMessageFlagged	`0x08`	Message is 'flagged' for urgent/special attention.
imapMessageRecent	`0x10`	Message is 'recently' arrived in this mailbox. This session is the first session to have been notified about this message.
imapMessageSeen	`0x20`	Message has been read.

From
string (read-only)
Default: ""

Contains the value of the From header field.

InternalDate
string (read-only)
Default: ""

Returns the internal date of the mail message.

Priority
MailPriorities (read-only)
Default: 2

Specifies the message priority.

Available options:


mpLowest	`0`
mpLow	`1`
mpNormal	`2`
mpHigh	`3`
mpHighest	`4`

SentTo
string (read-only)
Default: ""

Contains the value of the To header field.

Size
long (read-only)
Default: 0

Returns the size of the message in bytes.

Subject
string (read-only)
Default: ""

Contains the value of the Subject header field.

UID
int (read-only)
Default: 0

Returns the unique ID of the mail message.

IMAPServerInfo Type

Describes the IMAP server's capabilities.

Remarks

Check this object to learn about the IMAP server's technical capabilities.

The following fields are available:

Capabilities

Features

SupportedAuths

Fields

Capabilities
string (read-only)
Default: ""

Returns the list of server capabilities.

Use this property to get the list of IMAP capabilities (i.e., optional functionality of the server as defined in [RFC 3501]) obtained from the server.

Features
long (read-only)
Default: 0

Returns the list of capabilities supported by the server.

This value is bit mask of the following values:


imapLoginDisabled	`0x0001`	Specifies whether the server forbids login.
imapIdleSupported	`0x0002`	Indicates whether the IMAP server supports the IDLE command.

SupportedAuths
string (read-only)
Default: ""

Contains a comma-separated list of the authentication methods supported by the server.

Use this value to setup the Authentications config property if needed.

MailMessage Type

Represents an e-mail message.

Remarks

This object is a container for an e-mail message.

A message consists of a header and a body. The header, in turn, consists of several header fields. The names, syntax, and expected contents of the header fields are standardized.

The message body can contain anything you like (a message may not even have a body at all).

The following fields are available:

Fields

AttachmentCount
int (read-only)
Default: 0

Returns the number of attachments in this message.

Bcc
string
Default: ""

The contents of the BCC header field.

The BCC header field contains the addresses of secondary recipients of the message whose addresses are not to be revealed to other recipients of the message. Mail servers remove the BCC header when processing the message and use its value for dispatching the message only.

Cc
string
Default: ""

The value of the CC header field.

The CC field contains the addresses of secondary recipients of the message.

Comments
string
Default: ""

Contains additional information about the message body.

Date
string
Default: ""

The date and time when the message entered the mail delivery system.

This field contains the date and time at which the creator of the message posted the message to the mail delivery system.

The date is returned and accepted in UTC time zone.

DeliveryReceipt
bool
Default: False

Enables delivery notification.

From
string
Default: ""

Contains the value of the From header field.

This field contains the address(es) of the message author(s). If the actual sender is not the author of the message, use Sender to specify the sender separately.

HtmlText
string
Default: ""

The HTML version of the message.

ID
string
Default: ""

The contents of the Message-ID header field.

This field contains a unique identifier that refers to a particular version of this message.

InReplyTo
string
Default: ""

The value of the In-Reply-To header field.

A reply message should have the "In-Reply-To:" header field which may be used to identify the message (or messages) to which the new message is a reply.

Keywords
string
Default: ""

The value of the Keywords header field.

This field can be used to add some important words and phrases that might be useful for the recipient.

Mailer
string (read-only)
Default: ""

The name of the software that was used to send the message.

PlainText
string
Default: ""

The plain text version of the message.

Priority
MailPriorities
Default: 2

Specifies the message priority.

Available options:


mpLowest	`0`
mpLow	`1`
mpNormal	`2`
mpHigh	`3`
mpHighest	`4`

ReadReceipt
bool
Default: False

Enables a read notification.

References
string
Default: ""

The value of the References header field.

A reply message should include a "References:" header field which may be used to identify the "conversation thread". If the initial message is a reply itself, the References of the reply contain combined content of its "References:", "InReplyTo:" and "MessageID:" fields, subject to their presence in the original message.

ReplyTo
string
Default: ""

The value of the Reply-To header field.

This field contains the addresses to which the replies to this message should be sent. This field is optional. If not specified, the replies must be sent to the addresses specified in the From field.

ReturnPath
string
Default: ""

The value of the Return-Path header field.

This field contains the address to which this message shall be returned in case of unsuccessful delivery.

Sender
string
Default: ""

The value of the Sender header field.

This field specifies the mailbox of the agent responsible for the actual transmission of this message. If the originator of the message can be indicated by a single mailbox and both the author and the transmitter are identical, the "Sender:" field is deemed excessive and should not be used.

SendTo
string
Default: ""

The value of the To header field.

This field specifies the address(es) of the primary recipient(s) of the message.

Subject
string
Default: ""

Contains the subject field of this message.

Constructors

C#
VB.NET

public MailMessage();

Public MailMessage()

Creates a new empty mail message object.

OCSPResponse Type

Represents a single OCSP response originating from an OCSP responder.

Remarks

OCSP is a protocol that allows verification of certificate status in real-time, and is an alternative to Certificate Revocation Lists (CRLs).

An OCSP response is a snapshot of the certificate status at a given time.

The following fields are available:

Fields

Bytes
byte[] (read-only)
Default: ""

A buffer containing the raw OCSP response data.

EntryCount
int (read-only)
Default: 0

The number of SingleResponse elements contained in this OCSP response. Each SingleResponse element corresponds to a certificate status.

Issuer
string (read-only)
Default: ""

Indicates the issuer of this response (a CA or its authorized representative).

IssuerRDN
string (read-only)
Default: ""

Indicates the RDN of the issuer of this response (a CA or its authorized representative).

Location
string (read-only)
Default: ""

The location of the OCSP responder.

ProducedAt
string
Default: ""

Specifies the time when the response was produced, in UTC.

SigAlgorithm
string
Default: "0"

The public key algorithm that was used by the CA to sign this OCSP response.

Source
PKISources (read-only)
Default: 0

Returns the source (location or disposition) of a cryptographic primitive entity, such as a certificate, CRL, or OCSP response.

Constructors

C#
VB.NET

public OCSPResponse(byte[] bytes, int startIndex, int count);

Public OCSPResponse(ByVal Bytes As Byte(), ByVal StartIndex As Integer, ByVal Count As Integer)

Initializes the response from a memory buffer. Bytes is a buffer containing raw OCSP response data, StartIndex and Count specify the starting position and the number of bytes to be read from this buffer.

C#
VB.NET

public OCSPResponse(string location);

Public OCSPResponse(ByVal Location As String)

Downloads an OCSP response from a remote location.

C#
VB.NET

public OCSPResponse(System.IO.Stream stream);

Public OCSPResponse(ByVal Stream As System.IO.Stream)

Initializes the response with the data from a stream.

C#
VB.NET

public OCSPResponse();

Public OCSPResponse()

Creates an empty OCSP response object.

ProxySettings Type

A container for proxy server settings.

Remarks

This type exposes a collection of properties for tuning up the proxy server configuration.

The following fields are available:

Fields

Address
string
Default: ""

The IP address of the proxy server.

Authentication
ProxyAuthTypes
Default: 0

The authentication type used by the proxy server.


patNoAuthentication	`0`
patBasic	`1`
patDigest	`2`
patNTLM	`3`

Password
string
Default: ""

The password to authenticate to the proxy server.

Port
int
Default: 0

The port on the proxy server to connect to.

ProxyType
ProxyTypes
Default: 0

The type of the proxy server.


cptNone	`0`
cptSocks4	`1`
cptSocks5	`2`
cptWebTunnel	`3`
cptHTTP	`4`

RequestHeaders
string
Default: ""

Contains HTTP request headers for WebTunnel and HTTP proxy.

ResponseBody
string
Default: ""

Contains the HTTP or HTTPS (WebTunnel) proxy response body.

ResponseHeaders
string
Default: ""

Contains response headers received from an HTTP or HTTPS (WebTunnel) proxy server.

UseIPv6
bool
Default: False

Specifies whether IPv6 should be used when connecting through the proxy.

Username
string
Default: ""

Specifies the username credential for proxy authentication.

Constructors

C#
VB.NET

public ProxySettings();

Public ProxySettings()

Creates a new ProxySettings object.

SocketSettings Type

A container for the socket settings.

Remarks

This type is a container for socket-layer parameters.

The following fields are available:

Fields

DNSMode
DNSResolveModes
Default: 0

Selects the DNS resolver to use: the component's (secure) built-in one, or the one provided by the system.


dmAuto	`0`
dmPlatform	`1`
dmOwn	`2`
dmOwnSecure	`3`

DNSPort
int
Default: 0

Specifies the port number to be used for sending queries to the DNS server.

DNSQueryTimeout
int
Default: 0

The timeout (in milliseconds) for each DNS query. The value of 0 indicates an infinite timeout.

DNSServers
string
Default: ""

The addresses of DNS servers to use for address resolution, separated by commas or semicolons.

DNSTotalTimeout
int
Default: 0

The timeout (in milliseconds) for the whole resolution process. The value of 0 indicates an infinite timeout.

IncomingSpeedLimit
int
Default: 0

The maximum number of bytes to read from the socket, per second.

LocalAddress
string
Default: ""

The local network interface to bind the socket to.

LocalPort
int
Default: 0

The local port number to bind the socket to.

OutgoingSpeedLimit
int
Default: 0

The maximum number of bytes to write to the socket, per second.

Timeout
int
Default: 60000

The maximum period of waiting, in milliseconds, after which the socket operation is considered unsuccessful.

If Timeout is set to 0, a socket operation will expire after the system-default timeout (2 hrs 8 min for TCP stack).

UseIPv6
bool
Default: False

Enables or disables IP protocol version 6.

Constructors

C#
VB.NET

public SocketSettings();

Public SocketSettings()

Creates a new SocketSettings object.

TLSConnectionInfo Type

Contains information about a network connection.

Remarks

Use this property to check various details of the network connection. These include the total amounts of data transferred, the availability of TLS, and its parameters.

The following fields are available:

Fields

AEADCipher
bool (read-only)
Default: False

Indicates whether the encryption algorithm used is an AEAD cipher.

ChainValidationDetails
int (read-only)
Default: 0

The details of a certificate chain validation outcome. They may often suggest the reasons that contributed to the overall validation result.

Returns a bit mask of the following options:


cvrBadData	`0x0001`	One or more certificates in the validation path are malformed
cvrRevoked	`0x0002`	One or more certificates are revoked
cvrNotYetValid	`0x0004`	One or more certificates are not yet valid
cvrExpired	`0x0008`	One or more certificates are expired
cvrInvalidSignature	`0x0010`	A certificate contains a non-valid digital signature
cvrUnknownCA	`0x0020`	A CA certificate for one or more certificates has not been found (chain incomplete)
cvrCAUnauthorized	`0x0040`	One of the CA certificates are not authorized to act as CA
cvrCRLNotVerified	`0x0080`	One or more CRLs could not be verified
cvrOCSPNotVerified	`0x0100`	One or more OCSP responses could not be verified
cvrIdentityMismatch	`0x0200`	The identity protected by the certificate (a TLS endpoint or an e-mail addressee) does not match what is recorded in the certificate
cvrNoKeyUsage	`0x0400`	A mandatory key usage is not enabled in one of the chain certificates
cvrBlocked	`0x0800`	One or more certificates are blocked
cvrFailure	`0x1000`	General validation failure
cvrChainLoop	`0x2000`	Chain loop: one of the CA certificates recursively signs itself
cvrWeakAlgorithm	`0x4000`	A weak algorithm is used in one of certificates or revocation elements
cvrUserEnforced	`0x8000`	The chain was considered invalid following intervention from a user code

ChainValidationResult
ChainValidities (read-only)
Default: 0

The outcome of a certificate chain validation routine.

Available options:


cvtValid	`0`	The chain is valid
cvtValidButUntrusted	`1`	The chain is valid, but the root certificate is not trusted
cvtInvalid	`2`	The chain is not valid (some of certificates are revoked, expired, or contain an invalid signature)
cvtCantBeEstablished	`3`	The validity of the chain cannot be established because of missing or unavailable validation information (certificates, CRLs, or OCSP responses)

Use the ValidationLog property to access the detailed validation log.

Ciphersuite
string (read-only)
Default: ""

The cipher suite employed by this connection.

For TLS connections, this property returns the ciphersuite that was/is employed by the connection.

ClientAuthenticated
bool (read-only)
Default: False

Specifies whether client authentication was performed during this connection.

ClientAuthRequested
bool (read-only)
Default: False

Specifies whether client authentication was requested during this connection.

ConnectionEstablished
bool (read-only)
Default: False

Indicates whether the connection has been established fully.

ConnectionID
byte[] (read-only)
Default: ""

The unique identifier assigned to this connection.

DigestAlgorithm
string (read-only)
Default: ""

The digest algorithm used in a TLS-enabled connection.

EncryptionAlgorithm
string (read-only)
Default: ""

The symmetric encryption algorithm used in a TLS-enabled connection.

Exportable
bool (read-only)
Default: False

Indicates whether a TLS connection uses a reduced-strength exportable cipher.

ID
long (read-only)
Default: -1

The client connection's unique identifier. This value is used throughout to refer to a particular client connection.

KeyExchangeAlgorithm
string (read-only)
Default: ""

The key exchange algorithm used in a TLS-enabled connection.

KeyExchangeKeyBits
int (read-only)
Default: 0

The length of the key exchange key of a TLS-enabled connection.

NamedECCurve
string (read-only)
Default: ""

The elliptic curve used in this connection.

PFSCipher
bool (read-only)
Default: False

Indicates whether the chosen ciphersuite provides perfect forward secrecy (PFS).

PreSharedIdentity
string
Default: ""

Specifies the identity used when the PSK (Pre-Shared Key) key-exchange mechanism is negotiated.

PreSharedIdentityHint
string (read-only)
Default: ""

A hint professed by the server to help the client select the PSK identity to use.

PublicKeyBits
int (read-only)
Default: 0

The length of the public key.

RemoteAddress
string (read-only)
Default: ""

The client's IP address.

RemotePort
int (read-only)
Default: 0

The remote port of the client connection.

ResumedSession
bool (read-only)
Default: False

Indicates whether a TLS-enabled connection was spawned from another TLS connection

SecureConnection
bool (read-only)
Default: False

Indicates whether TLS or SSL is enabled for this connection.

ServerAuthenticated
bool (read-only)
Default: False

Indicates whether server authentication was performed during a TLS-enabled connection.

SignatureAlgorithm
string (read-only)
Default: ""

The signature algorithm used in a TLS handshake.

SymmetricBlockSize
int (read-only)
Default: 0

The block size of the symmetric algorithm used.

SymmetricKeyBits
int (read-only)
Default: 0

The key length of the symmetric algorithm used.

TotalBytesReceived
long (read-only)
Default: 0

The total number of bytes received over this connection.

TotalBytesSent
long (read-only)
Default: 0

The total number of bytes sent over this connection.

ValidationLog
string (read-only)
Default: ""

Contains the server certificate's chain validation log. This information may be very useful in investigating chain validation failures.

Version
string (read-only)
Default: ""

Indicates the version of SSL/TLS protocol negotiated during this connection.

Constructors

C#
VB.NET

public TLSConnectionInfo();

Public TLSConnectionInfo()

Creates a new TLSConnectionInfo object.

TLSSettings Type

A container for TLS connection settings.

Remarks

The TLS (Transport Layer Security) protocol provides security for information exchanged over insecure connections such as TCP/IP.

The following fields are available:

AutoValidateCertificates

ForceResumeIfDestinationChanges

PreSharedIdentity

PreSharedKey

PreSharedKeyCiphersuite

RenegotiationAttackPreventionMode

RevocationCheck

SSLOptions

TLSMode

UseExtendedMasterSecret

UseSessionResumption

Versions

Fields

AutoValidateCertificates
bool
Default: True

Specifies whether server-side TLS certificates should be validated automatically using internal validation rules.

BaseConfiguration
SecureTransportPredefinedConfigurations
Default: 0

Selects the base configuration for the TLS settings. Several profiles are offered and tuned up for different purposes, such as high security or higher compatibility.


stpcDefault	`0`
stpcCompatible	`1`
stpcComprehensiveInsecure	`2`
stpcHighlySecure	`3`

Ciphersuites
string
Default: ""

A list of ciphersuites separated with commas or semicolons. Each ciphersuite in the list may be prefixed with a minus sign (-) to indicate that the ciphersuite should be disabled rather than enabled. Besides the specific ciphersuite modifiers, this property supports the all (and -all) aliases, allowing all ciphersuites to be blanketly enabled or disabled at once.

Note: the list of ciphersuites provided to this property alters the baseline list of ciphersuites as defined by BaseConfiguration. Remember to start your ciphersuite string with -all; if you need to only enable a specific fixed set of ciphersuites. The list of supported ciphersuites is provided below:

NULL_NULL_NULL
RSA_NULL_MD5
RSA_NULL_SHA
RSA_RC4_MD5
RSA_RC4_SHA
RSA_RC2_MD5
RSA_IDEA_MD5
RSA_IDEA_SHA
RSA_DES_MD5
RSA_DES_SHA
RSA_3DES_MD5
RSA_3DES_SHA
RSA_AES128_SHA
RSA_AES256_SHA
DH_DSS_DES_SHA
DH_DSS_3DES_SHA
DH_DSS_AES128_SHA
DH_DSS_AES256_SHA
DH_RSA_DES_SHA
DH_RSA_3DES_SHA
DH_RSA_AES128_SHA
DH_RSA_AES256_SHA
DHE_DSS_DES_SHA
DHE_DSS_3DES_SHA
DHE_DSS_AES128_SHA
DHE_DSS_AES256_SHA
DHE_RSA_DES_SHA
DHE_RSA_3DES_SHA
DHE_RSA_AES128_SHA
DHE_RSA_AES256_SHA
DH_ANON_RC4_MD5
DH_ANON_DES_SHA
DH_ANON_3DES_SHA
DH_ANON_AES128_SHA
DH_ANON_AES256_SHA
RSA_RC2_MD5_EXPORT
RSA_RC4_MD5_EXPORT
RSA_DES_SHA_EXPORT
DH_DSS_DES_SHA_EXPORT
DH_RSA_DES_SHA_EXPORT
DHE_DSS_DES_SHA_EXPORT
DHE_RSA_DES_SHA_EXPORT
DH_ANON_RC4_MD5_EXPORT
DH_ANON_DES_SHA_EXPORT
RSA_CAMELLIA128_SHA
DH_DSS_CAMELLIA128_SHA
DH_RSA_CAMELLIA128_SHA
DHE_DSS_CAMELLIA128_SHA
DHE_RSA_CAMELLIA128_SHA
DH_ANON_CAMELLIA128_SHA
RSA_CAMELLIA256_SHA
DH_DSS_CAMELLIA256_SHA
DH_RSA_CAMELLIA256_SHA
DHE_DSS_CAMELLIA256_SHA
DHE_RSA_CAMELLIA256_SHA
DH_ANON_CAMELLIA256_SHA
PSK_RC4_SHA
PSK_3DES_SHA
PSK_AES128_SHA
PSK_AES256_SHA
DHE_PSK_RC4_SHA
DHE_PSK_3DES_SHA
DHE_PSK_AES128_SHA
DHE_PSK_AES256_SHA
RSA_PSK_RC4_SHA
RSA_PSK_3DES_SHA
RSA_PSK_AES128_SHA
RSA_PSK_AES256_SHA
RSA_SEED_SHA
DH_DSS_SEED_SHA
DH_RSA_SEED_SHA
DHE_DSS_SEED_SHA
DHE_RSA_SEED_SHA
DH_ANON_SEED_SHA
SRP_SHA_3DES_SHA
SRP_SHA_RSA_3DES_SHA
SRP_SHA_DSS_3DES_SHA
SRP_SHA_AES128_SHA
SRP_SHA_RSA_AES128_SHA
SRP_SHA_DSS_AES128_SHA
SRP_SHA_AES256_SHA
SRP_SHA_RSA_AES256_SHA
SRP_SHA_DSS_AES256_SHA
ECDH_ECDSA_NULL_SHA
ECDH_ECDSA_RC4_SHA
ECDH_ECDSA_3DES_SHA
ECDH_ECDSA_AES128_SHA
ECDH_ECDSA_AES256_SHA
ECDHE_ECDSA_NULL_SHA
ECDHE_ECDSA_RC4_SHA
ECDHE_ECDSA_3DES_SHA
ECDHE_ECDSA_AES128_SHA
ECDHE_ECDSA_AES256_SHA
ECDH_RSA_NULL_SHA
ECDH_RSA_RC4_SHA
ECDH_RSA_3DES_SHA
ECDH_RSA_AES128_SHA
ECDH_RSA_AES256_SHA
ECDHE_RSA_NULL_SHA
ECDHE_RSA_RC4_SHA
ECDHE_RSA_3DES_SHA
ECDHE_RSA_AES128_SHA
ECDHE_RSA_AES256_SHA
ECDH_ANON_NULL_SHA
ECDH_ANON_RC4_SHA
ECDH_ANON_3DES_SHA
ECDH_ANON_AES128_SHA
ECDH_ANON_AES256_SHA
RSA_NULL_SHA256
RSA_AES128_SHA256
RSA_AES256_SHA256
DH_DSS_AES128_SHA256
DH_RSA_AES128_SHA256
DHE_DSS_AES128_SHA256
DHE_RSA_AES128_SHA256
DH_DSS_AES256_SHA256
DH_RSA_AES256_SHA256
DHE_DSS_AES256_SHA256
DHE_RSA_AES256_SHA256
DH_ANON_AES128_SHA256
DH_ANON_AES256_SHA256
RSA_AES128_GCM_SHA256
RSA_AES256_GCM_SHA384
DHE_RSA_AES128_GCM_SHA256
DHE_RSA_AES256_GCM_SHA384
DH_RSA_AES128_GCM_SHA256
DH_RSA_AES256_GCM_SHA384
DHE_DSS_AES128_GCM_SHA256
DHE_DSS_AES256_GCM_SHA384
DH_DSS_AES128_GCM_SHA256
DH_DSS_AES256_GCM_SHA384
DH_ANON_AES128_GCM_SHA256
DH_ANON_AES256_GCM_SHA384
ECDHE_ECDSA_AES128_SHA256
ECDHE_ECDSA_AES256_SHA384
ECDH_ECDSA_AES128_SHA256
ECDH_ECDSA_AES256_SHA384
ECDHE_RSA_AES128_SHA256
ECDHE_RSA_AES256_SHA384
ECDH_RSA_AES128_SHA256
ECDH_RSA_AES256_SHA384
ECDHE_ECDSA_AES128_GCM_SHA256
ECDHE_ECDSA_AES256_GCM_SHA384
ECDH_ECDSA_AES128_GCM_SHA256
ECDH_ECDSA_AES256_GCM_SHA384
ECDHE_RSA_AES128_GCM_SHA256
ECDHE_RSA_AES256_GCM_SHA384
ECDH_RSA_AES128_GCM_SHA256
ECDH_RSA_AES256_GCM_SHA384
PSK_AES128_GCM_SHA256
PSK_AES256_GCM_SHA384
DHE_PSK_AES128_GCM_SHA256
DHE_PSK_AES256_GCM_SHA384
RSA_PSK_AES128_GCM_SHA256
RSA_PSK_AES256_GCM_SHA384
PSK_AES128_SHA256
PSK_AES256_SHA384
PSK_NULL_SHA256
PSK_NULL_SHA384
DHE_PSK_AES128_SHA256
DHE_PSK_AES256_SHA384
DHE_PSK_NULL_SHA256
DHE_PSK_NULL_SHA384
RSA_PSK_AES128_SHA256
RSA_PSK_AES256_SHA384
RSA_PSK_NULL_SHA256
RSA_PSK_NULL_SHA384
RSA_CAMELLIA128_SHA256
DH_DSS_CAMELLIA128_SHA256
DH_RSA_CAMELLIA128_SHA256
DHE_DSS_CAMELLIA128_SHA256
DHE_RSA_CAMELLIA128_SHA256
DH_ANON_CAMELLIA128_SHA256
RSA_CAMELLIA256_SHA256
DH_DSS_CAMELLIA256_SHA256
DH_RSA_CAMELLIA256_SHA256
DHE_DSS_CAMELLIA256_SHA256
DHE_RSA_CAMELLIA256_SHA256
DH_ANON_CAMELLIA256_SHA256
ECDHE_ECDSA_CAMELLIA128_SHA256
ECDHE_ECDSA_CAMELLIA256_SHA384
ECDH_ECDSA_CAMELLIA128_SHA256
ECDH_ECDSA_CAMELLIA256_SHA384
ECDHE_RSA_CAMELLIA128_SHA256
ECDHE_RSA_CAMELLIA256_SHA384
ECDH_RSA_CAMELLIA128_SHA256
ECDH_RSA_CAMELLIA256_SHA384
RSA_CAMELLIA128_GCM_SHA256
RSA_CAMELLIA256_GCM_SHA384
DHE_RSA_CAMELLIA128_GCM_SHA256
DHE_RSA_CAMELLIA256_GCM_SHA384
DH_RSA_CAMELLIA128_GCM_SHA256
DH_RSA_CAMELLIA256_GCM_SHA384
DHE_DSS_CAMELLIA128_GCM_SHA256
DHE_DSS_CAMELLIA256_GCM_SHA384
DH_DSS_CAMELLIA128_GCM_SHA256
DH_DSS_CAMELLIA256_GCM_SHA384
DH_anon_CAMELLIA128_GCM_SHA256
DH_anon_CAMELLIA256_GCM_SHA384
ECDHE_ECDSA_CAMELLIA128_GCM_SHA256
ECDHE_ECDSA_CAMELLIA256_GCM_SHA384
ECDH_ECDSA_CAMELLIA128_GCM_SHA256
ECDH_ECDSA_CAMELLIA256_GCM_SHA384
ECDHE_RSA_CAMELLIA128_GCM_SHA256
ECDHE_RSA_CAMELLIA256_GCM_SHA384
ECDH_RSA_CAMELLIA128_GCM_SHA256
ECDH_RSA_CAMELLIA256_GCM_SHA384
PSK_CAMELLIA128_GCM_SHA256
PSK_CAMELLIA256_GCM_SHA384
DHE_PSK_CAMELLIA128_GCM_SHA256
DHE_PSK_CAMELLIA256_GCM_SHA384
RSA_PSK_CAMELLIA128_GCM_SHA256
RSA_PSK_CAMELLIA256_GCM_SHA384
PSK_CAMELLIA128_SHA256
PSK_CAMELLIA256_SHA384
DHE_PSK_CAMELLIA128_SHA256
DHE_PSK_CAMELLIA256_SHA384
RSA_PSK_CAMELLIA128_SHA256
RSA_PSK_CAMELLIA256_SHA384
ECDHE_PSK_CAMELLIA128_SHA256
ECDHE_PSK_CAMELLIA256_SHA384
ECDHE_PSK_RC4_SHA
ECDHE_PSK_3DES_SHA
ECDHE_PSK_AES128_SHA
ECDHE_PSK_AES256_SHA
ECDHE_PSK_AES128_SHA256
ECDHE_PSK_AES256_SHA384
ECDHE_PSK_NULL_SHA
ECDHE_PSK_NULL_SHA256
ECDHE_PSK_NULL_SHA384
ECDHE_RSA_CHACHA20_POLY1305_SHA256
ECDHE_ECDSA_CHACHA20_POLY1305_SHA256
DHE_RSA_CHACHA20_POLY1305_SHA256
PSK_CHACHA20_POLY1305_SHA256
ECDHE_PSK_CHACHA20_POLY1305_SHA256
DHE_PSK_CHACHA20_POLY1305_SHA256
RSA_PSK_CHACHA20_POLY1305_SHA256
AES128_GCM_SHA256
AES256_GCM_SHA384
CHACHA20_POLY1305_SHA256
AES128_CCM_SHA256
AES128_CCM8_SHA256

ClientAuth
ClientAuthTypes
Default: 0

Enables or disables certificate-based client authentication.

Set this property to true to tune up the client authentication type:


ccatNoAuth	`0`
ccatRequestCert	`1`
ccatRequireCert	`2`

ECCurves
string
Default: ""

Defines the elliptic curves to enable.

Extensions
string
Default: ""

Provides access to TLS extensions.

ForceResumeIfDestinationChanges
bool
Default: False

Whether to force TLS session resumption when the destination address changes.

PreSharedIdentity
string
Default: ""

Defines the identity used when the PSK (Pre-Shared Key) key-exchange mechanism is negotiated.

PreSharedKey
string
Default: ""

Contains the pre-shared key for the PSK (Pre-Shared Key) key-exchange mechanism, encoded with base16.

PreSharedKeyCiphersuite
string
Default: ""

Defines the ciphersuite used for PSK (Pre-Shared Key) negotiation.

RenegotiationAttackPreventionMode
RenegotiationAttackPreventionModes
Default: 2

Selects the renegotiation attack prevention mechanism.

The following options are available:


crapmCompatible	`0`	TLS 1.0 and 1.1 compatibility mode (renegotiation indication extension is disabled).
crapmStrict	`1`	Renegotiation attack prevention is enabled and enforced.
crapmAuto	`2`	Automatically choose whether to enable or disable renegotiation attack prevention.

RevocationCheck
RevocationCheckKinds
Default: 1

Specifies the kind(s) of revocation check to perform.

Revocation checking is necessary to ensure the integrity of the chain and obtain up-to-date certificate validity and trustworthiness information.


crcNone	`0`	No revocation checking.
crcAuto	`1`	Automatic mode selection. Currently this maps to crcAnyOCSPOrCRL, but it may change in the future.
crcAllCRL	`2`	All provided CRL endpoints will be checked, and all checks must succeed.
crcAllOCSP	`3`	All provided OCSP endpoints will be checked, and all checks must succeed.
crcAllCRLAndOCSP	`4`	All provided CRL and OCSP endpoints will be checked, and all checks must succeed.
crcAnyCRL	`5`	All provided CRL endpoints will be checked, and at least one check must succeed.
crcAnyOCSP	`6`	All provided OCSP endpoints will be checked, and at least one check must succeed.
crcAnyCRLOrOCSP	`7`	All provided CRL and OCSP endpoints will be checked, and at least one check must succeed. CRL endpoints are checked first.
crcAnyOCSPOrCRL	`8`	All provided CRL and OCSP endpoints will be checked, and at least one check must succeed. OCSP endpoints are checked first.

This setting controls the way the revocation checks are performed for every certificate in the chain. Typically certificates come with two types of revocation information sources: CRL (certificate revocation lists) and OCSP responders. CRLs are static objects periodically published by the CA at some online location. OCSP responders are active online services maintained by the CA that can provide up-to-date information on certificate statuses in near real time.

There are some conceptual differences between the two. CRLs are normally larger in size. Their use involves some latency because there is normally some delay between the time when a certificate was revoked and the time the subsequent CRL mentioning that is published. The benefits of CRL is that the same object can provide statuses for all certificates issued by a particular CA, and that the whole technology is much simpler than OCSP (and thus is supported by more CAs).

This setting lets you adjust the validation course by including or excluding certain types of revocation sources from the validation process. The crcAnyOCSPOrCRL setting (give preference to the faster OCSP route and only demand one source to succeed) is a good choice for most typical validation environments. The "crcAll*" modes are much stricter, and may be used in scenarios where bulletproof validity information is essential.

Note: If no CRL or OCSP endpoints are provided by the CA, the revocation check will be considered successful. This is because the CA chose not to supply revocation information for its certificates, meaning they are considered irrevocable.

Note: Within each of the above settings, if any retrieved CRL or OCSP response indicates that the certificate has been revoked, the revocation check fails.

SSLOptions
int
Default: 16

Various SSL (TLS) protocol options, set of


cssloExpectShutdownMessage	`0x001`	Wait for the close-notify message when shutting down the connection
cssloOpenSSLDTLSWorkaround	`0x002`	(DEPRECATED) Use a DTLS version workaround when talking to very old OpenSSL versions
cssloDisableKexLengthAlignment	`0x004`	Do not align the client-side PMS by the RSA modulus size. It is unlikely that you will ever need to adjust it.
cssloForceUseOfClientCertHashAlg	`0x008`	Enforce the use of the client certificate hash algorithm. It is unlikely that you will ever need to adjust it.
cssloAutoAddServerNameExtension	`0x010`	Automatically add the server name extension when known
cssloAcceptTrustedSRPPrimesOnly	`0x020`	Accept trusted SRP primes only
cssloDisableSignatureAlgorithmsExtension	`0x040`	Disable (do not send) the signature algorithms extension. It is unlikely that you will ever need to adjust it.
cssloIntolerateHigherProtocolVersions	`0x080`	(server option) Do not allow fallback from TLS versions higher than currently enabled
cssloStickToPrefCertHashAlg	`0x100`	Stick to preferred certificate hash algorithms
cssloNoImplicitTLS12Fallback	`0x200`	Disable implicit TLS 1.3 to 1.2 fallbacks
cssloUseHandshakeBatches	`0x400`	Send the handshake message as large batches rather than individually

TLSMode
SSLModes
Default: 0

Specifies the TLS mode to use.


smDefault	`0`
smNoTLS	`1`	Do not use TLS
smExplicitTLS	`2`	Connect to the server without any encryption and then request an SSL session.
smImplicitTLS	`3`	Connect to the specified port, and establish the SSL session at once.
smMixedTLS	`4`	Connect to the specified port, and establish the SSL session at once, but allow plain data.

UseExtendedMasterSecret
bool
Default: False

Enables the Extended Master Secret Extension, as defined in RFC 7627.

UseSessionResumption
bool
Default: False

Enables or disables the TLS session resumption capability.

Versions
int
Default: 16

The SSL/TLS versions to enable by default.


csbSSL2	`0x01`	SSL 2
csbSSL3	`0x02`	SSL 3
csbTLS1	`0x04`	TLS 1.0
csbTLS11	`0x08`	TLS 1.1
csbTLS12	`0x10`	TLS 1.2
csbTLS13	`0x20`	TLS 1.3

Constructors

C#
VB.NET

public TLSSettings();

Public TLSSettings()

Creates a new TLSSettings object.

Config Settings (IMAPClient Component)

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.

IMAPClient Config Settings

Authentications: Specifies enabled authentication methods and their priorities.

Use this setting to enable or disable authentication methods and specify their priorities. The setting contains a comma-separated list of authentication methods. The first method in the list has the highest priority, and so on. The component will use the first method from the list which is supported by the server.

Supported methods: PLAIN, LOGIN, CRAM-MD5, DIGEST-MD5, NTLM, GSSAPI, XOAUTH2, SCRAM-SHA-1, SCRAM-SHA-256

Default value: SCRAM-SHA-256,SCRAM-SHA-1,DIGEST-MD5,CRAM-MD5,LOGIN

IdleAuto: Specifies whether idle mode should be requested automatically.

Set this property to true to force this client to automatically send IDLE request to the server. Default value is false.

IdleTimeout: Specifies idle timeout in seconds.

If IDLE command is running on a server, and a client has been inactive for some time, the server may log the client off. Set this property to a maximum period of time after which this client should resend the IDLE command. The default value is 1740 seconds (29 minutes).

IgnoreSystemTrust: Whether trusted Windows Certificate Stores should be treated as trusted.

Specifies whether, during chain validation, the component should respect the trust to CA certificates as configured in the operating system. In Windows this effectively defines whether the component should trust the certificates residing in the Trusted Root Certification Authorities store.

If IgnoreSystemTrust is True, certificates residing in the trusted root store are treated as if they are known, rather than trusted. Only certificates provided via other means (such as the TrustedCertificates property) are considered trusted.

ListCriteria: Specifies an advanced criteria for listing messages on the server.

Use this setting to list messages based on additional criteria like message date, size, etc. For more details, see SEARCH command in RFC 3501

MaxLineLength: Specifies maximum expected line length.

Use this setting to specify how long the expected mail line can be. Setting the very long value leads to memory increase. Default value is 10000.

MessageHeaderZZZ[i]: A value of ZZZ header field for message i.

Returns the value of the header field named ZZZ for the message with index i. If the message doesn't contain such header field, the returned value is an empty line.

For example, to get a value of the Content-Type header field, use MessageHeaderContentType[i] config name.

OtherHeaders: Specifies header fields to request when lists messages on the server.

Use this setting to request additional header fields for each message on the server. The setting contains a comma-separated list of header field names that should be requested when the component lists messages. To request all the fields, use "OtherHeaders=*". To not request additional header fields, use "OtherHeaders=".

SendingBufferSize: Specifies the size of the buffer used to post messages to the server.

Use this setting to specify how much memory to use for the temporary buffer when a message is uploaded to the server. Default value is 64KB.

SessionLogDetails: Specifies whether login credentials should be written to the session log.

Use this setting to configure the details written to SessionLog. Possible values are:


default		Login credentials are not logged.
full		Login credentials appeare in the SessionLog.
none		No SessionLog is created.

StaticDNS: Specifies whether static DNS rules should be used.

Set this property to enable or disable static DNS rules for the component. Works only if UseOwnDNSResolver is set to true.

Supported values are:


none		No static DNS rules (default)
local		Local static DNS rules
global		Global static DNS rules

StaticIPAddress[domain]: Gets or sets an IP address for the specified domain name.

Use this property to get or set an IP address for the specified domain name in the internal (of the component) or global DNS rules storage depending on the StaticDNS value. The type of the IP address (IPv4 or IPv6) is determined automatically. If both addresses are available, they are devided by the | (pipe) character.

StaticIPAddresses: Gets or sets all the static DNS rules.

Use this property to get static DNS rules from the current rules storage or restore them back between application sessions. If StaticDNS of the component is set to "local", the property returns/restores the rules from/to the internal storage of the component. If StaticDNS of the component is set to "global", the property returns/restores the rules from/to the GLOBAL storage. The rules list is returned and accepted in JSON format.

TempPath: Path for storing temporary files.

This setting specifies an absolute path to the location on disk where temporary files are stored.

TLSExtensions: TBD.

TBD

TLSPeerExtensions: TBD.

TBD

TLSSessionGroup: Specifies the group name of TLS sessions to be used for session resumption.

Use this property to limit the search of chached TLS sessions to the specified group. Sessions from other groups will be ignored. By default, all sessions are cached with an empty group name and available to all the components.

TLSSessionLifetime: Specifies lifetime in seconds of the cached TLS session.

Use this property to specify how much time the TLS session should be kept in the session cache. After this time, the session expires and will be automatically removed from the cache. Default value is 300 seconds (5 minutes).

TLSSessionPurgeInterval: Specifies how often the session cache should remove the expired TLS sessions.

Use this property to specify the time interval of purging the expired TLS sessions from the session cache. Default value is 60 seconds (1 minute).

TolerateMinorChainIssues: Whether to tolerate minor chain issues.

This parameter controls whether the chain validator should tolerate minor technical issues when validating the chain. Those are:

CA, revocation source, TLS key usage requirements are not mandated
Violation of OCSP issuer requirements are ignored
The AuthorityKeyID extension in CRL- and certificate-issuing CAs are ignored (helps with incorrectly renewed certificates)
Basic constraints and name constraints of CA certificates are ignored
Some weaker algorithms are tolerated

UseMicrosoftCTL: Enables or disables the automatic use of the Microsoft online certificate trust list.

Enable this property to make the chain validation module automatically look up missing CA certificates in the public Windows Update repository.

UseSystemCertificates: Enables or disables the use of the system certificates.

Use this property to tell the chain validation module to automatically look up missing CA certificates in the system certificates. In many cases it is beneficial to switch this property on, as the operating system certificate configuration provides a representative trust framework.

Base Config Settings

ASN1UseGlobalTagCache: Controls whether ASN.1 module should use a global object cache.

This is a performance setting. It is unlikely that you will ever need to adjust it.

AssignSystemSmartCardPins: Specifies whether CSP-level PINs should be assigned to CNG keys.

This is a low-level tweak for certain cryptographic providers. It is unlikely that you will ever need to adjust it.

CheckKeyIntegrityBeforeUse: Enables or disable private key integrity check before use.

This global property enables or disables private key material check before each signing operation. This slows down performance a bit, but prevents a selection of attacks on RSA keys where keys with unknown origins are used.

You can switch this property off to improve performance if your project only uses known, good private keys.

CookieCaching: Specifies whether a cookie cache should be used for HTTP(S) transports.

Set this property to enable or disable cookies caching for the component.

Supported values are:


off		No caching (default)
local		Local caching
global		Global caching

Cookies: Gets or sets local cookies for the component.

Use this property to get cookies from the internal cookie storage of the component and/or restore them back between application sessions.

DefDeriveKeyIterations: Specifies the default key derivation algorithm iteration count.

This global property sets the default number of iterations for all supported key derivation algorithms. Note that you can provide the required number of iterations by using properties of the relevant key generation component; this global setting is used in scenarios where specific iteration count is not or cannot be provided.

DNSLocalSuffix: The suffix to assign for TLD names.

Use this global setting to adjust the default suffix to assign to top-level domain names. The default is .local.

EnableClientSideSSLFFDHE: Enables or disables finite field DHE key exchange support in TLS clients.

This global property enables or disables support for finite field DHE key exchange methods in TLS clients. FF DHE is a slower algorithm if compared to EC DHE; enabling it may result in slower connections.

This setting only applies to sessions negotiated with TLS version 1.3.

GlobalCookies: Gets or sets global cookies for all the HTTP transports.

Use this property to get cookies from the GLOBAL cookie storage or restore them back between application sessions. These cookies will be used by all the components that have its CookieCaching property set to "global".

HardwareCryptoUsePolicy: The hardware crypto usage policy.

This global setting controls the hardware cryptography usage policy: auto, enable, or disable.

HttpUserAgent: Specifies the user agent name to be used by all HTTP clients.

This global setting defines the User-Agent field of the HTTP request provides information about the software that initiates the request. This value will be used by all the HTTP clients including the ones used internally in other components.

HttpVersion: The HTTP version to use in any inner HTTP client components created.

Set this property to 1.0 or 1.1 to indicate the HTTP version that any internal HTTP clients should use.

IgnoreExpiredMSCTLSigningCert: Whether to tolerate the expired Windows Update signing certificate.

It is not uncommon for Microsoft Windows Update Certificate Trust List to be signed with an expired Microsoft certificate. Setting this global property to true makes SBB ignore the expired factor and take the Trust List into account.

ListDelimiter: The delimiter character for multi-element lists.

Allows to set the delimiter for any multi-entry values returned by the component as a string object, such as file lists. For most of the components, this property is set to a newline sequence.

LogDestination: Specifies the debug log destination.

Contains a comma-separated list of values that specifies where debug log should be dumped.

Supported values are:


file		File
console		Console
systemlog		System Log (supported for Android only)
debugger		Debugger (supported for VCL for Windows and .Net)

LogDetails: Specifies the debug log details to dump.

Contains a comma-separated list of values that specifies which debug log details to dump.

Supported values are:


time		Current time
level		Level
package		Package name
module		Module name
class		Class name
method		Method name
threadid		Thread Id
contenttype		Content type
content		Content
all		All details

LogFile: Specifies the debug log filename.

Use this property to provide a path to the log file.

LogFilters: Specifies the debug log filters.

Contains a comma-separated list of value pairs ("name:value") that describe filters.

Supported filter names are:


exclude-package		Exclude a package specified in the value
exclude-module		Exclude a module specified in the value
exclude-class		Exclude a class specified in the value
exclude-method		Exclude a method specified in the value
include-package		Include a package specified in the value
include-module		Include a module specified in the value
include-class		Include a class specified in the value
include-method		Include a method specified in the value

LogFlushMode: Specifies the log flush mode.

Use this property to set the log flush mode. The following values are defined:


none		No flush (caching only)
immediate		Immediate flush (real-time logging)
maxcount		Flush cached entries upon reaching LogMaxEventCount entries in the cache.

LogLevel: Specifies the debug log level.

Use this property to provide the desired debug log level.

Supported values are:


none		None (by default)
fatal		Severe errors that cause premature termination.
error		Other runtime errors or unexpected conditions.
warning		Use of deprecated APIs, poor use of API, 'almost' errors, other runtime situations that are undesirable or unexpected, but not necessarily "wrong".
info		Interesting runtime events (startup/shutdown).
debug		Detailed information on flow of through the system.
trace		More detailed information.

LogMaxEventCount: Specifies the maximum number of events to cache before further action is taken.

Use this property to specify the log event number threshold. This threshold may have different effects, depending on the rotation setting and/or the flush mode.

The default value of this setting is 100.

LogRotationMode: Specifies the log rotation mode.

Use this property to set the log rotation mode. The following values are defined:


none		No rotation
deleteolder		Delete older entries from the cache upon reaching LogMaxEventCount
keepolder		Keep older entries in the cache upon reaching LogMaxEventCount (newer entries are discarded)

MaxASN1BufferLength: Specifies the maximal allowed length for ASN.1 primitive tag data.

This global property limits the maximal allowed length for ASN.1 tag data for non-content-carrying structures, such as certificates, CRLs, or timestamps. It does not affect structures that can carry content, such as CMS/CAdES messages. This is a security property aiming at preventing DoS attacks.

MaxASN1TreeDepth: Specifies the maximal depth for processed ASN.1 trees.

This global property limits the maximal depth of ASN.1 trees that the component can handle without throwing an error. This is a security property aiming at preventing DoS attacks.

OCSPHashAlgorithm: Specifies the hash algorithm to be used to identify certificates in OCSP requests.

This global setting defines the hash algorithm to use in OCSP requests during chain validation. Some OCSP responders can only use older algorithms, in which case setting this property to SHA1 may be helpful.

OldClientSideRSAFallback: Specifies whether the SSH client should use a SHA1 fallback.

Tells the SSH client to use a legacy ssh-rsa authentication even if the server indicates support for newer algorithms, such as rsa-sha-256. This is a backward-compatibility tweak.

PKICache: Specifies which PKI elements (certificates, CRLs, OCSP responses) should be cached.

The PKICache setting specifies which Public Key Infrastructure (PKI) elements should be cached to optimize performance and reduce retrieval times. It supports comma-separated values to indicate the specific types of PKI data that should be cached.

Supported Values:


certificate	Enables caching of certificates.
crl	Enables caching of Certificate Revocation Lists (CRLs).
ocsp	Enables caching of OCSP (Online Certificate Status Protocol) responses.

Example (default value): PKICache=certificate,crl,ocsp In this example, the component caches certificates, CRLs, and OCSP responses.

PKICachePath: Specifies the file system path where cached PKI data is stored.

The PKICachePath setting defines the file system path where cached PKI data (e.g., certificates, CRLs, OCSP responses and Trusted Lists) will be stored. This allows the system to persistently save and retrieve PKI cache data, even across application restarts.

The default value is an empty string - no cached PKI data is stored on disk.

Example: PKICachePath=C:\Temp\cache In this example, the cached PKI data is stored in the C:\Temp\cache directory.

ProductVersion: Returns the version of the SecureBlackbox library.

This property returns the long version string of the SecureBlackbox library being used (major.minor.build.revision).

ServerSSLDHKeyLength: Sets the size of the TLS DHE key exchange group.

Use this property to adjust the length, in bits, of the DHE prime to be used by the TLS server.

StaticDNS: Specifies whether static DNS rules should be used.

Set this property to enable or disable static DNS rules for the component. Works only if UseOwnDNSResolver is set to true.

Supported values are:


none		No static DNS rules (default)
local		Local static DNS rules
global		Global static DNS rules

StaticIPAddress[domain]: Gets or sets an IP address for the specified domain name.

StaticIPAddresses: Gets or sets all the static DNS rules.

Tag: Allows to store any custom data.

Use this config property to store any custom data.

TLSSessionGroup: Specifies the group name of TLS sessions to be used for session resumption.

TLSSessionLifetime: Specifies lifetime in seconds of the cached TLS session.

TLSSessionPurgeInterval: Specifies how often the session cache should remove the expired TLS sessions.

Use this property to specify the time interval of purging the expired TLS sessions from the session cache. Default value is 60 seconds (1 minute).

UseCRLObjectCaching: Specifies whether reuse of loaded CRL objects is enabled.

This setting enables or disables the caching of CRL objects. When set to true (the default value), the system checks if a CRL object is already loaded in memory before attempting to load a new instance. If the object is found, the existing instance is reused, and its reference count is incremented to track its usage. When the reference count reaches zero, indicating that no references to the object remain, the system will free the object from memory. This setting enhances performance by minimizing unnecessary object instantiation and promotes efficient memory management, particularly in scenarios where CRL objects are frequently used.

UseInternalRandom: Switches between SecureBlackbox-own and platform PRNGs.

Allows to switch between internal/native PRNG implementation and the one provided by the platform.

UseLegacyAdESValidation: Enables legacy AdES validation mode.

Use this setting to switch the AdES component to the validation approach that was used in SBB 2020/SBB 2022 (less attention to temporal details).

UseOCSPResponseObjectCaching: Specifies whether reuse of loaded OCSP response objects is enabled.

This setting enables or disables the caching of OCSP response objects. When set to true (the default value), the system checks if a OCSP response object is already loaded in memory before attempting to load a new instance. If the object is found, the existing instance is reused, and its reference count is incremented to track its usage. When the reference count reaches zero, indicating that no references to the object remain, the system will free the object from memory. This setting enhances performance by minimizing unnecessary object instantiation and promotes efficient memory management, particularly in scenarios where OCSP response objects are frequently used.

UseOwnDNSResolver: Specifies whether the client components should use own DNS resolver.

Set this global property to false to force all the client components to use the DNS resolver provided by the target OS instead of using own one.

UseSharedSystemStorages: Specifies whether the validation engine should use a global per-process copy of the system certificate stores.

Set this global property to false to make each validation run use its own copy of system certificate stores.

UseSystemNativeSizeCalculation: An internal CryptoAPI access tweak.

This is an internal setting. Please do not use it unless instructed by the support team.

UseSystemOAEPAndPSS: Enforces or disables the use of system-driven RSA OAEP and PSS computations.

This global setting defines who is responsible for performing RSA-OAEP and RSA-PSS computations where the private key is stored in a Windows system store and is exportable. If set to true, SBB will delegate the computations to Windows via a CryptoAPI call. Otherwise, it will export the key material and perform the computations using its own OAEP/PSS implementation.

This setting only applies to certificates originating from a Windows system store.

UseSystemRandom: Enables or disables the use of the OS PRNG.

Use this global property to enable or disable the use of operating system-driven pseudorandom number generation.

XMLRDNDescriptorName[OID]: Defines an OID mapping to descriptor names for the certificate's IssuerRDN or SubjectRDN.

This property defines custom mappings between Object Identifiers (OIDs) and descriptor names. This mapping specifies how the certificate's issuer and subject information (ds:IssuerRDN and ds:SubjectRDN elements respectively) are represented in XML signatures.

The property accepts comma-separated values where the first descriptor name is used when the OID is mapped, and subsequent values act as aliases for parsing.

Syntax: Config("XMLRDNDescriptorName[OID]=PrimaryName,Alias1,Alias2");

Where:

OID: The Object Identifier from the certificate's IssuerRDN or SubjectRDN that you want to map.

PrimaryName: The main descriptor name used in the XML signature when the OID is encountered.

Alias1, Alias2, ...: Optional alternative names recognized during parsing.

Usage Examples:

Map OID 2.5.4.5 to SERIALNUMBER: Config("XMLRDNDescriptorName[2.5.4.5]=SERIALNUMBER");

Map OID 1.2.840.113549.1.9.1 to E, with aliases EMAIL and EMAILADDRESS: Config("XMLRDNDescriptorName[1.2.840.113549.1.9.1]=E,EMAIL,EMAILADDRESS");

XMLRDNDescriptorPriority[OID]: Specifies the priority of descriptor names associated with a specific OID.

This property specifies the priority of descriptor names associated with a specific OID that allows to reorder descriptors in the ds:IssuerRDN and ds:SubjectRDN elements during signing.

XMLRDNDescriptorReverseOrder: Specifies whether to reverse the order of descriptors in RDN.

Specifies whether to reverse the order of descriptors in the ds:IssuerRDN and ds:SubjectRDN elements during XML signing. By default, this property is set to true (as specified in RFC 2253, 2.1).

XMLRDNDescriptorSeparator: Specifies the separator used between descriptors in RDN.

Specifies the separator used between descriptors in the ds:IssuerRDN and ds:SubjectRDN elements during XML signing. By default, this property is set to ", " value.

Trappable Errors (IMAPClient Component)

IMAPClient Errors

1048577	Invalid parameter (`SB_ERROR_INVALID_PARAMETER`)
1048578	Invalid configuration (`SB_ERROR_INVALID_SETUP`)
1048579	Invalid state (`SB_ERROR_INVALID_STATE`)
1048580	Invalid value (`SB_ERROR_INVALID_VALUE`)
1048581	Private key not found (`SB_ERROR_NO_PRIVATE_KEY`)
1048582	Cancelled by the user (`SB_ERROR_CANCELLED_BY_USER`)
1048583	The file was not found (`SB_ERROR_NO_SUCH_FILE`)
1048584	Unsupported feature or operation (`SB_ERROR_UNSUPPORTED_FEATURE`)
1048585	General error (`SB_ERROR_GENERAL_ERROR`)