RAD Studio VCL Reference
TWebRequest.Referer Property

Reports the value of the Referer header of the HTTP request message.

property Referer: AnsiString;
__property AnsiString Referer;

Read Referer to determine the URI of the resource where the HTTP request message originated. Referer allows the server application to generate back-links to the source of the request. If Referer is a partial URI, it should be interpreted as a relative path to the URL property. 

The Referer property is not set when the URL of the HTTP request was obtained from a source that does not have its own URI, such as input from the user keyboard. 


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