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Properties Methods Events Configuration Settings
The NNTP 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.
The NNTP 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.
The following is the full list of the properties of the component with short descriptions. Click on the links for complete descriptions.
Method List The following is the full list of the methods of the component with short descriptions. Click on the links for complete descriptions. Config Sets or retrieves a component configuration setting. Connect Connect to the news server. Disconnect Disconnect from the news server. DoEvents Processes events from the internal message queue. 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. Event List The following is the full list of the events fired by the component with short descriptions. Click on the links for complete descriptions. 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 ). Configuration Settings The following is a list of configuration settings for the component with short descriptions. Click on the links for complete descriptions. AbsoluteTimeout Determines whether timeouts are inactivity timeouts or absolute timeouts. ArticleInfoLimit Instructs component to save the amount of articles specified that are returned by the server when a GroupOverview event is fired. CloseStreamAfterTransfer If true, the component will close the upload or download stream after the transfer. CodePage The system code page used for Unicode to Multibyte translations (Windows/COM only). FirewallData Used to send extra data to the firewall. FirewallListener If true, the component binds to a SOCKS firewall as a server (IPPort only). 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. InBufferSize The size in bytes of the incoming queue of the socket. MaxHeaderLength Maximum length for headers to avoid line folding (default 80) MaxLineLength The maximum amount of data to accumulate when no EOL is found. OutBufferSize The size in bytes of the outgoing queue of the socket. TcpNoDelay Whether or not to delay when sending packets
The following is the full list of the methods of the component with short descriptions. Click on the links for complete descriptions.
Event List The following is the full list of the events fired by the component with short descriptions. Click on the links for complete descriptions. 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 ). Configuration Settings The following is a list of configuration settings for the component with short descriptions. Click on the links for complete descriptions. AbsoluteTimeout Determines whether timeouts are inactivity timeouts or absolute timeouts. ArticleInfoLimit Instructs component to save the amount of articles specified that are returned by the server when a GroupOverview event is fired. CloseStreamAfterTransfer If true, the component will close the upload or download stream after the transfer. CodePage The system code page used for Unicode to Multibyte translations (Windows/COM only). FirewallData Used to send extra data to the firewall. FirewallListener If true, the component binds to a SOCKS firewall as a server (IPPort only). 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. InBufferSize The size in bytes of the incoming queue of the socket. MaxHeaderLength Maximum length for headers to avoid line folding (default 80) MaxLineLength The maximum amount of data to accumulate when no EOL is found. OutBufferSize The size in bytes of the outgoing queue of the socket. TcpNoDelay Whether or not to delay when sending packets
The following is the full list of the events fired by the component with short descriptions. Click on the links for complete descriptions.
Configuration Settings The following is a list of configuration settings for the component with short descriptions. Click on the links for complete descriptions. AbsoluteTimeout Determines whether timeouts are inactivity timeouts or absolute timeouts. ArticleInfoLimit Instructs component to save the amount of articles specified that are returned by the server when a GroupOverview event is fired. CloseStreamAfterTransfer If true, the component will close the upload or download stream after the transfer. CodePage The system code page used for Unicode to Multibyte translations (Windows/COM only). FirewallData Used to send extra data to the firewall. FirewallListener If true, the component binds to a SOCKS firewall as a server (IPPort only). 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. InBufferSize The size in bytes of the incoming queue of the socket. MaxHeaderLength Maximum length for headers to avoid line folding (default 80) MaxLineLength The maximum amount of data to accumulate when no EOL is found. OutBufferSize The size in bytes of the outgoing queue of the socket. TcpNoDelay Whether or not to delay when sending packets
The following is a list of configuration settings for the component with short descriptions. Click on the links for complete descriptions.
