[MapProxy] invalid wms request from mapproxy

Travis Kirstine traviskirstine at gmail.com
Mon Nov 16 11:37:38 PST 2015

I noticed a bunch of 500 errors being generated in MapProxy because the
source  MapServer WMS is not generating images.  It appears some cases
MapProxy will generate a WMS request with a width=1 and height=3 px.  I
think this is related to the source coverage (bbox) in some way.  The
source has a fairly small bbox which could be the problem? If I remove the
coverage from the source wms it works


The odd thing is MapProxy is working fine when looking at the layer between
zoom 19-7 however once I zoom out between 0-6 the request start to fail

MP Stuff:

    grids: [spherical_mercator]
    sources: [BHP_wms]
    meta_buffer: 100
    meta_size: [4,4]
    format: image/png

    type: wms
      url: http://localhost/cgi-bin/mapserver_wms?
      layers: BHP
      transparent: true
      srs: 'EPSG:3857'
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