[MapProxy] Any clue - could not retrieve WMS map: No response from URL

[Erik Lindahl]

Thank you for testing!!!
It is a bad DNSSEC on AAAA record on daim.lfv.se that made the lookup failed.

Solved it!

--- Ursprungligt meddelande ---
Från: Daniel Cebulla daniel.cebulla at jena.de
Datum: 2 februari 2026 08:45:08
Till: fisensmosse at gmail.com, mapproxy at lists.osgeo.org
Ämne: Re: [MapProxy] Any clue - could not retrieve WMS map: No response 
from URL

> Hi Michael,
>
> I have tested your layer configuration within my Mapproxy environment
> and it totally worked. So there is no issue with this this configuration.
> Maybe something within the global config of mapproxy? Or within your
> application configuration? I am running the Mapproxy in a docker setup
> with nginx.
> "No response from URL" sounds like the Mapproxy itself is not running
> properly. If there is a WMS error, the error message would be more
> specific regarding the service.
>
> Good luck for finding the issue!
>
> Greetings,
> Daniel
>
>
> Am 01.02.26 um 15:10 schrieb fisensmosse--- via MapProxy:
>> Hi
>> I can´t have the wms source from
>> https://daim.lfv.se/geoserver/mais/wms?SERVICE=WMS&REQUEST=GetCapabilities
>> working. My config results in mapproxy.source.wms:get_map - could not
>> retrieve WMS map: No response from URL - every time.
>> I can fetch wms images though curl / web reader without any problems,
>> but not with mapproxy.
>>
>> Anyone with a idea whats wrong?
>>
>> I did see the header - Transfer-Encoding: chunked
>> in the response, do mapproxy support that?
>>
>> layers:
>>  - name: lfv
>>    title: LFV
>>    sources: [lfv_cache]
>>
>> caches:
>>  lfv_cache:
>>    grids: [webmercator_hq]
>>    sources: [lfv_source]
>>    cache:
>>      type: mbtiles
>>    link_single_color_images: true
>>
>> sources:
>>  lfv_source:
>>    type: wms
>>    req:
>>      url: https://daim.lfv.se/geoserver/wms?
>>      layers: RSTA
>>      transparent: True
>>    wms_opts:
>>      version: '1.3.0'
>>    supported_srs: ['EPSG:4326', 'EPSG:900913', 'EPSG:3857']
>>    coverage:
>>      bbox: [7.697500, 54.789969, 25.491981, 69.149749]
>>      srs: 'EPSG:4326'
>>    http:
>>      headers:
>>        Host: daim.lfv.se
>>        Referer: https://daim.lfv.se
>>
>> grids:
>>  webmercator_hq:
>>    base: GLOBAL_WEBMERCATOR
>>    tile_size: [512, 512]
>>    origin: nw
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