HTTP HTTP GET If-Modified-Since # # Server-side HTTP/1.1 200 OK Date: Thu, 09 Nov 2010 14:49:00 GMT Server: test-server/fake Last-Modified: Tue, 13 Jun 2003 12:10:00 GMT Content-Length: 11 Content-Type: text/html 0123456789 # # Client-side http HTTP 200 If-Modified-Since with newer document http://%HOSTIP:%HTTPPORT/1126 -z "dec 12 12:00:00 1999 GMT" # # Verify data after the test has been "shot" GET /1126 HTTP/1.1 Host: %HOSTIP:%HTTPPORT User-Agent: curl/%VERSION Accept: */* If-Modified-Since: Sun, 12 Dec 1999 12:00:00 GMT