[mapserver-users] WMS request url gets misinterpreted calling on mapserver from python

Rahkonen Jukka (MML) jukka.rahkonen at maanmittauslaitos.fi
Wed Feb 11 02:34:55 PST 2015


Hi,

Do you mean that you get nothing else than those lines  into ms_errorfile ever, not valid images at all?

The log entry looks good to me. The line you copied from access.log has been a success "200" with "14068" bytes sent out which fits well for a small jpeg image. Could it be that your DOP20 source data is little bit sparse and some 256x256 sized tiles just do not contain any data? Then it would be an expected result that you get those lines into your ms_error. 

-Jukka Rahkonen-

Lars Fricke wrote:

Hello List,

I have a very strange effect I am stuck with. I have a python server
(Twisted) from where I make a WMS request to Mapserver. Now the strange thing is, if I issue the request from my python server, I get a
"msQueryByRect(): Search returned no results. No matching record(s) found." in ms_error.txt

If I take the very request string from the apache access log and put it into the browser, I get a nice image as result. So I assume the BBOX may be interpreted differently depending on the client? Or can this be an encoding issue?

Here's my line from access.log:
127.0.0.1 - - [11/Feb/2015:09:17:35 +0100] "GET /wms?SERVICE=WMS&FORMAT=image%2Fjpeg&REQUEST=GetMap&HEIGHT=256&SRS=EPSG%3A3857&VERSION=1.1.1&BBOX=1102680.5700419527%2C6719884.904662984%2C1102757.0070702378%2C6719961.341691271&LAYERS=DOP20&WIDTH=256&MAXNATIVEZOOM=20&TRANSPARENT=false
HTTP/1.1" 200 14068 "-" "My Server"

I do not see anything in the error.log of Apache at that time.

Any help is highly appreciated. Thanks for taking the time!

Best

Lars
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