I could make the same request a 2nd time as ajax, but that seems a waste. I just want to snag it as it goes by the 1st time.
________________________________ From: Wally Atkins <[email protected]> To: Charlton Galvarino Cc: Andy Colson <[email protected]>; [email protected] <[email protected]> Sent: Tue Feb 01 15:53:50 2011 Subject: Re: [OpenLayers-Users] getting img request headers Interesting ... I don't think that I have ever seen an example where client side javascript can access HTTP response header information on an image. AJAX might be a different story ... I'm not saying that it can't be done ... but personally I've not seen it done. On Tue, Feb 1, 2011 at 3:33 PM, Charlton Galvarino <[email protected]<mailto:[email protected]>> wrote: Yes, I can see it in firebug, but I want to do it programmatically w/i javascript on my map page. A user picks a layer to map; show timestamp below the map. Another layer; another timestamp. -----Original Message----- From: Andy Colson [mailto:[email protected]<mailto:[email protected]>] Sent: Tuesday, February 01, 2011 3:32 PM To: Charlton Galvarino Cc: [email protected]<mailto:[email protected]> Subject: Re: [OpenLayers-Users] getting img request headers Firebug? On 2/1/2011 2:28 PM, Charlton Galvarino wrote: > Hi, all. Is there a way for me to intercept a normal (single tile) > WMS img request so that I can see the request headers as they come > back? WMS specs say, > > ===== > In order that the Client may determine what value was actually sent, > the server shall label the response object with the actual value found > by rounding. In the HTTP environment, the labeling is performed using > an HTTP response header. For each dimension to which a rounded-off value was > applied, a header line of the following form shall be sent: > > Warning: 99 Nearest value used: DIM_NAME=value units > > where "99" is a defined by HTTP [IETF RFC 2616] for use by > miscellaneous warnings, DIM_NAME is the corresponding request > parameter name, value is the value actually used, and units is the units > attribute (see C.2) for that dimension. > ===== > > I want to pull that timestamp out and along to the user to eliminate the > guesswork behind identifying the time the WMS img is trying to represent. > > I haven't found any real hooks into this, and OpenLayers.Util.onImageLoad > isn't really helping me see the light either. > > TIA. > > > > > > Charlton Galvarino > 1 (803) 233-6205 : voice > 1 (803) 223-9579 : fax > [email protected]<mailto:[email protected]> > > P.O. Box 50960 > Columbia, SC 29250 > > _______________________________________________ > Users mailing list > [email protected]<mailto:[email protected]> > http://lists.osgeo.org/mailman/listinfo/openlayers-users _______________________________________________ Users mailing list [email protected]<mailto:[email protected]> http://lists.osgeo.org/mailman/listinfo/openlayers-users
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