OtherHeaders Property

Other headers as determined by the user (optional).

Syntax

__property String OtherHeaders = {read=FOtherHeaders, write=FSetOtherHeaders};

Default Value

""

Remarks

This property can be set to a string of headers to be appended to the HTTP request headers created from other properties like ContentType, From, etc.

The headers must be of the format "header: value" as described in the HTTP specifications. Header lines should be separated by CRLF ("\r\ n") .

Use this property with caution. If this property contains invalid headers, HTTP requests may fail.

This property is useful for extending the functionality of the component beyond what is provided.

For CalDAV, the "If-Match" header is extremely useful. After adding a an event with PutCalendarEvent or retrieving an event with GetCalendarEvent, the ETag property will contain a value indicating the current state of the event. If you wish to update the event, you may pass this returned ETag in an "If-Match" header. If the event on the server has been modified since you retrieved it (and the ETag on the server has changed), then the PutCalendarEvent will fail with an HTTP Protocol Error: "409 Conflict", which indicates there is a conflict between the version you're trying to update and the current version on the sever. For instance:

  calDAV.OtherHeaders = "If-Match: 1900-1900\r\ n";

This property is not available at design time.

Data Type

String