RSS Component

Properties Methods Events Configuration Settings Errors

The RSS Component is used to retrieve, parse, edit, and write RSS syndicated content.

Syntax

nsoftware.IPWorks.Rss

Remarks

The RSS Component implements a standard RSS newsreader with extended capabilities as specified at http://backend.userland.com/rss2.

The component contains a number of properties that map directly to RSS fields. To receive a feed call the GetFeed method with the URL or file to retrieve specified in the URL parameter. The RSS component can also generate RSS feeds, which can be retrieved through the RSSData property or written through the WriteFile method.

The RSS Component supports all RSS feed properties that are standard in versions 0.91, 0.92 and 2.0 of the RSS protocol through a number of component properties. It also supports non-standard properties as specified in the RSS protocol through the Namespaces collection and the GetProperty and SetProperty methods.

Property List

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


Accept	A list of acceptable MIME types for the request.
Authorization	The Authorization string to be sent to the server.
AuthScheme	The authentication scheme to use when server authorization is required.
Channel	The channel data for the feed.
Connected	Shows whether the component is connected.
Cookies	Collection of cookies.
Firewall	A set of properties related to firewall access.
FollowRedirects	Determines what happens when the server issues a redirect.
Idle	The current status of the component.
IfModifiedSince	A date determining the maximum age of the desired document.
Items	A collection of items in the current RSS feed.
LocalFile	The path to a local file for downloading. If the file exists, it is overwritten.
LocalHost	The name of the local host or user-assigned IP interface through which connections are initiated or accepted.
Namespaces	A collection of namespaces in the current namespace stack.
OtherHeaders	Other headers as determined by the user (optional).
ParsedHeaders	Collection of headers returned from the last request.
Password	A password if authentication is to be used.
Proxy	A set of properties related to proxy access.
Referer	Referer URL/document (optional).
RSSData	The complete text of the RSS XML file.
RSSVersion	The RSS protocol version of the current RSS feed.
Timeout	A timeout for the component.
TransferredData	The contents of the last response from the server.
TransferredDataLimit	The maximum of bytes of data to be transferred.
TransferredHeaders	The full set of headers as received from the server.
User	A user name if authentication is to be used.

Method List

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


AddCookie	Adds a cookie and the corresponding value to the outgoing request headers.
AddItem	Inserts a new item into the beginning of an RSS feed.
AddNamespace	Adds a namespace to the Namespaces properties.
Config	Sets or retrieves a configuration setting .
DoEvents	Processes events from the internal message queue.
GetFeed	Fetches an RSS feed.
GetProperty	Gets the value of a specific RSS feed item element or attribute.
GetURL	Fetches an RSS feed.
Interrupt	Interrupt the current method.
OPMLAttr	Returns the value of the attribute specified in the parameter.
Put	Sends data to the HTTP server using the HTTP PUT method.
ReadFile	Loads an RSS file into the component.
ReadOPML	Reads and parses an OPML file.
Reset	Resets all properties of the component.
SetProperty	Sets the value of a specific RSS feed property.
WriteFile	Writes an RSS feed from the component.

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.


Connected	Fired immediately after a connection completes (or fails).
ConnectionStatus	Fired to indicate changes in connection state.
Disconnected	Fired when a connection is closed.
EndTransfer	Fired when a document finishes transferring.
Error	Information about errors during data delivery.
Header	Fired every time a header line comes in.
OPMLHeader	Fired for each value in the Header section of the current OPML document.
OPMLOutline	Fired for each outline in the current OPML document.
Redirect	Fired when a redirection is received from the server.
SetCookie	Fired for every cookie set by the server.
StartTransfer	Fired when a document starts transferring (after the headers).
Status	Fired when the HTTP status line is received from the server.
Transfer	Fired while a document transfers (delivers document).

Configuration Settings

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


ItemAdditionalData[i]	Additional data to be added to an RSS Feed item.
ValueFormat	Format of data returned or set.
AcceptEncoding	Used to tell the server which types of content encodings the client supports.
AllowHTTPCompression	This property enables HTTP compression for receiving data.
AllowIdenticalRedirectURL	Allow redirects to the same URL.
Append	Whether to append data to LocalFile.
Authorization	The Authorization string to be sent to the server.
BytesTransferred	Contains the number of bytes transferred in the response data.
EncodeURL	If set to true the URL will be encoded by the component.
FollowRedirects	Determines what happens when the server issues a redirect.
GetOn302Redirect	If set to true the component will perform a GET on the new location.
HTTPVersion	The version of HTTP used by the component.
IfModifiedSince	A date determining the maximum age of the desired document.
KeepAlive	Determines whether the HTTP connection is closed after completion of the request.
MaxRedirectAttempts	Limits the number of redirects that are followed in a request.
OtherHeaders	Other headers as determined by the user (optional).
ProxyAuthorization	The authorization string to be sent to the proxy server.
ProxyAuthScheme	The authorization scheme to be used for the proxy.
ProxyPassword	A password if authentication is to be used for the proxy.
ProxyPort	Port for the proxy server (default 80).
ProxyServer	Name or IP address of a proxy server (optional).
ProxyUser	A user name if authentication is to be used for the proxy.
TransferredDataLimit	The maximum number of incoming bytes to be stored by the component.
TransferredHeaders	The full set of headers as received from the server.
UseChunkedEncoding	Enables or Disables HTTP chunked encoding for transfers.
ChunkSize	Specifies the chunk size in bytes when using chunked encoding.
UserAgent	Information about the user agent (browser).
KerberosSPN	The Service Principal Name for the Kerberos Domain Controller.
ConnectionTimeout	Sets a separate timeout value for establishing a connection.
FirewallAutoDetect	Tells the component whether or not to automatically detect and use firewall system settings, if available.
FirewallHost	Name or IP address of firewall (optional).
FirewallPassword	Password to be used if authentication is to be used when connecting through the firewall.
FirewallPort	The TCP port for the FirewallHost;.
FirewallType	Determines the type of firewall to connect through.
FirewallUser	A user name if authentication is to be used connecting through a firewall.
KeepAliveTime	The inactivity time in milliseconds before a TCP keep-alive packet is sent.
KeepAliveInterval	The retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.
Linger	When set to True, connections are terminated gracefully.
LingerTime	Time in seconds to have the connection linger.
LocalHost	The name of the local host through which connections are initiated or accepted.
LocalPort	The TCP port in the local host where the component binds.
MaxLineLength	The maximum amount of data to accumulate when no EOL is found.
MaxTransferRate	The transfer rate limit in bytes per second.
RecordLength	The length of received data records.
TCPKeepAlive	Determines whether or not the keep alive socket option is enabled.
UseIPv6	Whether to use IPv6.
TcpNoDelay	Whether or not to delay when sending packets.
AbsoluteTimeout	Determines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallData	Used to send extra data to the firewall.
InBufferSize	The size in bytes of the incoming queue of the socket.
OutBufferSize	The size in bytes of the outgoing queue of the socket.
CodePage	The system code page used for Unicode to Multibyte translations.