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setHeader() and addHeader() practical example

 
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Hi

I am looking for a pratical example of using setHeader() and addHeader() which can clearly mention the difference between these two.
Please provide me such example.

Thanks in advance
 
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setHeader sets a named response header and replaces any existing headers with that name. addHeader on the other hand doesn't replace any existing headers with the same name. You can inspect response headers in Firefox using Web Developer Toolbar and using ieHttpHeaders for Internet Explorer...
 
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