http_header
| Format: http_header (header-name, value) |
| Format of specialized function | Format of http_header equivalent | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Purpose: These functions modify the response header that is sent to the client. The header-name and value parameters are header name/value combinations allowed in response headers to clients. For a detailed description of response headers see RFC-2068 which defines the HTTP/1.1 protocol. See also the strftime() function to compute the dateRFC1123 parameter for the http_expires() and http_last_modified() functions.
| Note: The only heitml code that is interpreted before sending the response header to the client, are the _init methods of objects derived from base class object. Thus, header modifications functions can only be called from there. |
Example:
<def expirenow; inherit object;
def _init;
http_expires((strftime ("%a, %d %b %Y %X GMT", gmtime(caltime()))));
/def;
/def>
<expirenow>
|
Tip: heitml also provides components for response header modifications (see Component Guide).
| Caution! A call to the http_empty_document() function or setting a header with Content-Length: 0 may cause some browser/server combinations to hang after the heitml request has been done. |
See Also: http_request_header(), strftime().
Selected blog articles : 3D Objects on HTML pages, CSS Transition Visibility, and CSS Transition Display.
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