IP*Works! S/MIME snntp Component : snntp OCX, snntp .NET Component, snntp Class, snntp Bean, snntp Object

Available in: S/MIME

SNNTP Component [IP*Works! S/MIME V8]

Properties Methods Events Configuration Settings

The SNNTP component is used to read and post articles on Usenet news servers.

NOTE: What follows is a very short description of the component interfaces. For more information, please consult the help files that come with the respective package.

Remarks

The SNNTP component is the S/MIME enabled equivalent of the IP*Works! NNTP component. In addition to standard NNTP functions the SNNTP component can sign, encrypt, decrypt, and verify message signatures. The methods and properties for encrypting, signing, decrypting, and verifying signatures are identical to those provided with the S/MIME component. After setting the certificate properties, and specifying ArticleText, call the Encrypt, Sign or SignAndEncrypt method before posting and the result will be stored in ArticleText. When attempting to verify a signed message or when decrypting a message call the Decrypt, VerifySignature, or DecryptAndVerifySignature methods and the resulting text will be replaced in ArticleText.

The SNNTP component implements a standard Usenet news reader as specified in RFC 977. It can be used to browse Usenet news groups and read and post articles.

The CurrentGroup property sets the current newsgroup. From then on, news articles from that group can be read by setting the article number in CurrentArticle and then calling the appropriate method. Properties such as ArticleCount, FirstArticle, LastArticle provide information about the current state.

The headers and text of the articles are received respectively through the Header and Transfer events. Additionally, up to MaxLines from the article body are provided in the ArticleText property. The GroupOverview event returns information about a range of articles (OverviewRange) in CurrentGroup, and the GroupList event is used when listing newsgroup names. The PITrail event provides a trace of the interaction with the server.

The component supports posting of articles through the ArticleText and AttachedFile properties. The article text is specified in one or both of the above, and then the PostArticle method is called. Article headers are given in a series of properties like ArticleFrom, ArticleSubject, Organization, etc. that map directly to the USENET article header with the same name.

Property List

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


ArticleCount	The estimated number of articles in CurrentGroup .
ArticleDate	The date of the current article.
ArticleFrom	The email address of the author (for posting articles).
ArticleHeaders	The full headers of the article as retrieved from the server.
ArticleId	The message-id of the current article.
ArticleList	Collection of articles collected through GroupOverview or GroupSearch .
ArticleReferences	Articles the posted article follows up to.
ArticleReplyTo	The address to reply to (for posting articles).
ArticleSubject	The article subject (for posted articles).
ArticleText	The full text of the article (without the headers).
AttachedFile	A file name of which the contents will be appended to ArticleText when posting articles.
Certificate	The current selected certificate.
CheckDate	The date (format YYMMDD HHMMSS) to check for creation of new groups. If the group was created after the date specified, it is considered new.
Command	Can be used to send additional commands directly to the server.
Connected	Shows whether the component is connected.
CurrentArticle	The number or message-id of the current article.
CurrentGroup	The name of the current group.
EncryptingAlgorithm	Textual description of the encrypting algorithm.
Firewall	A set of properties related to firewall access.
FirstArticle	The number of the first article in CurrentGroup.
GroupList	Collection of newsgroups listed by ListGroups or ListNewGroups .
Idle	The current status of the component.
IncludeCertificate	Specifies whether to include the signer's certificate with the signed message.
IncludeChain	Specifies whether to include the signer's certificate chain with the signed message.
LastArticle	The number of the last article in CurrentGroup .
LastReply	The last reply from the server.
LocalHost	The name of the local host or user-assigned IP interface through which connections are initiated or accepted.
MaxLines	The maximum number of message lines besides headers to retrieve.
Newsgroups	A comma separated list of newsgroups in which to post the article.
NewsPort	The server port for NNTP (default 119).
NewsServer	The name or address of a news server.
Organization	The organization of the author (for posting articles).
OtherHeaders	An RFC850 compliant string consisting of extra headers (for posting articles).
OverviewRange	A range for the GroupOverview method (first-last).
ParsedHeaders	A collection of headers returned from the last article retrieval.
Password	A login password to login with in the NewsServer .
RecipientCerts	The collection of recipient certificates of the message.
SearchHeader	A header for the GroupSearch method.
SearchPattern	A search pattern for the GroupSearch method.
SearchRange	A range for the GroupSearch method (first-last).
SignerCert	Contains the certificate of the message signer.
SigningAlgorithm	Textual description of the signature hash algorithm.
Timeout	A timeout for the component.
User	A user id to login as in the NewsServer .

Method List

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


AddRecipientCert	Used to add recipient certificates used to encrypt messages.
Config	Sets or retrieves a configuration setting.
Connect	Connect to the news server.
Decrypt	Decrypts the current Message .
DecryptAndVerifySignature	Decrypts and verifies the signature of the current Message .
Disconnect	Disconnect from the news server.
DoEvents	Processes events from the internal message queue.
Encrypt	Encrypts the current Message .
FetchArticle	Get the headers and body of an article specified in CurrentArticle .
FetchArticleBody	Get only the body of an article specified in CurrentArticle .
FetchArticleHeaders	Get only the headers of an article specified in CurrentArticle .
GroupOverview	Receive an overview for the articles in range OverviewRange in the CurrentGroup .
GroupSearch	Receive an overview for the articles in range SearchRange in the CurrentGroup .
Interrupt	Interrupt the current method.
ListGroups	List all groups on the server.
ListNewGroups	List all new groups on the server.
LocalizeDate	Converts a valid RFC 822 message date to local date and time.
PostArticle	Post the current article and attached file.
ResetHeaders	Reset all of the article headers.
SetArticleStream	Sets the stream to which the article downloaded from the server will be written.
Sign	Sign the current Message .
SignAndEncrypt	Signs and encrypts the current Message .
VerifySignature	Verify the signature of the current Message .

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.


ConnectionStatus	Fired to indicate changes in connection state.
EndTransfer	Fired when the article text completes transferring.
Error	Information about errors during data delivery.
GroupList	Fired while group data transfers (during group listings).
GroupOverview	Fired for each line of article overview data (during group overviews).
GroupSearch	Fired for each line of group search data (during group searches).
Header	Fired for every article header being retrieved during article retrieval.
PITrail	Traces the commands sent to the news server, and the respective replies.
StartTransfer	Fired when the article text starts transferring.
Transfer	Fired while the article text gets transferred (to or from the NewsServer ).

Configuration Settings

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


MaxHeaderLength	Maximum length for headers to avoid line folding (default 80)
ArticleInfoLimit	Instructs component to save the amount of articles specified that are returned by the server when a GroupOverview event is fired.
GroupInfoLimit	Instructs component to save the amount of group info objects specified that are returned by the server after a ListGroups call has been made.
MaxLineLength	The maximum amount of data to accumulate when no EOL is found.
FirewallListener	If true, the component binds to a SOCKS firewall as a server (IPPort only).
CloseStreamAfterTransfer	If true, the component will close the upload or download stream after the transfer.
TcpNoDelay	Whether or not to delay when sending packets
InBufferSize	The size in bytes of the incoming queue of the socket.
OutBufferSize	The size in bytes of the outgoing queue of the socket.
AbsoluteTimeout	Determines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallData	Used to send extra data to the firewall.
CodePage	The system code page used for Unicode to Multibyte translations (Windows/COM only).