On 1/27/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > Hi > > I have noticed the following errors in my Tomcat logs: > > java.lang.IllegalArgumentException: fr, 27 jan 2006 08:45:27 GMT > at org.apache.coyote.tomcat5.CoyoteRequest.getDateHeader( > CoyoteRequest.java:1887) > at org.apache.coyote.tomcat5.CoyoteRequestFacade.getDateHeader( > CoyoteRequestFacade.java:428) > at > org.apache.shale.remoting.impl.AbstractResourceProcessor.ifModifiedSince( > AbstractResourceProcessor.java:343) > > Going through the Javadocs, it may lok like it is a Tomcat error, but I > wanted to check with you guys first and here what you think. > > In the javadocs for CoyoteRequest.getDateHeader it does say: Throws: > java.lang.IllegalArgumentException - if the specified header value > cannot be converted to a date > > > Now the question is: How does the "If-Modified-Since" parameter in the > request get set? > In this case Tomcat does noe understand: "fr, 27 jan 2006 08:45:27 GMT"
The "If-Modified-Since" header is set for you by the browser, if you had transmitted a "Date" header on the previous version of the same URL, and if you have configured your browser for caching. The required format is defined in the HTTP spec[1], section 3.3, and your string doesn't match -- so Tomcat would be correct in reporting an error here. The day abbreviation would Hermod Craig [1] http://rfc-editor.org/rfc/rfc2616.txt
