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]>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]] > Sent: Tuesday, February 01, 2011 3:32 PM > To: Charlton Galvarino > Cc: [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] > > > > P.O. Box 50960 > > Columbia, SC 29250 > > > > _______________________________________________ > > Users mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/openlayers-users > > _______________________________________________ > Users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/openlayers-users >
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