[mapserver-users] getting corrupted png with WMS request to mapserv CGI on command line

Wed May 27 06:36:32 PDT 2015

Renzo,
As far as I remember you have to remove the HTTP headers from the
response (the first 2-4 lines or so) when you use mapserv -nh with OGC
services.
Regards,
Fabian

On 27.05.15 13:02, Renzo Kottmann wrote:
> nope. I tried IMAGEPATH "/tmp/" and IMAGEPATH "/tmp" both still
> result in corrupt pngs. thx,renzo
> 
> On Wed, 27 May 2015 12:12:02 +0200, thomas bonfort 
> <thomas.bonfort at gmail.com> wrote:
>> IMAGEPATH /tmp/ should be changed to IMAGEPATH "/tmp/"
>> 
>> -- thomas
>> 
>> On 27 May 2015 at 11:47, Renzo Kottmann <rkottman at mpi-bremen.de>
>> wrote:
>>> Hi All,
>>> 
>>> I have installed mapserver 6.4.1 in a docker container based on
>>> debian jessie (see dockerfile below)
>>> 
>>> If I run:
>>> 
>>> /usr/lib/cgi-bin/mapserv -nh
>>> 
> "QUERY_STRING=EXCEPTIONS=application/vnd.ogc.se_inimage&REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&map=/genes-mapserver/wms_test.map&SRS=EPSG:4326&BBOX=-180,-90,180,90&FORMAT=image/png&WIDTH=1080&HEIGHT=614&STYLES=&LAYERS=satellite_mod"
>>>>
> 
/tmp/test.png
>>> 
>>> The png is corrupt and I can not open it with neither gimp nor
>>> firefox.
>>> 
>>> 
>>> However, I get valid pngs using the very same map file with
>>> shp2img or mapserv -nh
>>> 
> "QUERY_STRING=map=/genes-mapserver/wms_test.map&mode=map&layers=satellite_mod
>>>
> 
.
>>> 
>>> 
>>> Find below more details (mapserver version, exact command lines
>>> I used and resulting debug logs, map file, and docker file)
>>> 
>>> 
>>> I searched google, the mailing list archives, but nothing seems
>>> to be similar to this problem. Therefore, any help is very much
>>> appreciated :)
>>> 
>>> ciao, renzo
>>> 
>>> 
>>> * Mapserver Version:
>>> 
>>> MapServer version 6.4.1 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG
>>> OUTPUT=KML SUPPORTS=PROJ SUPPORTS=GD SUPPORTS=AGG
>>> SUPPORTS=FREETYPE SUPPORTS=CAIRO SUPPORTS=SVG_SYMBOLS
>>> SUPPORTS=RSVG SUPPORTS=ICONV SUPPORTS=FRIBIDI
>>> SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER
>>> SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER
>>> SUPPORTS=FASTCGI SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG
>>> INPUT=POSTGIS INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
>>> 
>>> 
>>> * Command lines
>>> 
>>> Generates valid png:
>>> 
>>> /usr/lib/cgi-bin/mapserv -nh
>>> 
> "QUERY_STRING=map=/genes-mapserver/wms_test.map&mode=map&layers=satellite_mod"
>>>>
> 
/tmp/test.png
>>> 
>>> shp2img --all_debug 2 -m /genes-mapserver/wms_test.map -o
>>> /tmp/test.png
>>> 
>>> 
>>> Generates invalid corrupt png:
>>> 
>>> /usr/lib/cgi-bin/mapserv -nh
>>> 
> "QUERY_STRING=EXCEPTIONS=application/vnd.ogc.se_inimage&REQUEST=GetMap&SERVICE=WMS&VERSION=1.1.1&map=/genes-mapserver/wms_test.map&SRS=EPSG:4326&BBOX=-180,-90,180,90&FORMAT=image/png&WIDTH=1080&HEIGHT=614&STYLES=&LAYERS=satellite_mod"
>>>>
> 
/tmp/test.png
>>> 
>>> 
>>> 
>>> * Log file (for all three runs in that order):
>>> 
>>> 
>>> [Wed May 27 08:51:44 2015].475696 CGI Request 1 on process 79 
>>> [Wed May 27 08:51:44 2015].476881 msDrawMap(): rendering using 
>>> outputformat named png (AGG/PNG). [Wed May 27 08:51:44
>>> 2015].476916 msDrawMap(): WMS/WFS set-up and query, 0.000s [Wed
>>> May 27 08:51:44 2015].478222
>>> msDrawRasterLayerLow(satellite_mod): entering. [Wed May 27
>>> 08:51:45 2015].16608 msDrawMap(): Layer 0 (satellite_mod), 
>>> 0.540s [Wed May 27 08:51:45 2015].16665 msDrawMap(): Drawing
>>> Label Cache,
> 0.000s
>>> [Wed May 27 08:51:45 2015].16677 msDrawMap() total time:
>>> 0.541s [Wed May 27 08:51:45 2015].38545 msSaveImage(stdout)
>>> total time: 0.022s [Wed May 27 08:51:45 2015].38838 mapserv
>>> request processing time (msLoadMap not incl.): 0.563s
>>> 
>>> [Wed May 27 08:56:29 2015].752703 msDrawMap(): rendering using 
>>> outputformat named png (AGG/PNG). [Wed May 27 08:56:29
>>> 2015].752820 msDrawMap(): WMS/WFS set-up and query, 0.000s [Wed
>>> May 27 08:56:29 2015].754465
>>> msDrawRasterLayerLow(satellite_mod): entering. [Wed May 27
>>> 08:56:30 2015].295590 msDrawMap(): Layer 0 (satellite_mod), 
>>> 0.543s [Wed May 27 08:56:30 2015].295664 msDrawMap(): Drawing
>>> Label Cache, 0.000s [Wed May 27 08:56:30 2015].295684
>>> msDrawMap() total time: 0.544s [Wed May 27 08:56:30
>>> 2015].323794 msSaveImage(/tmp/test.png) total time: 0.028s
>>> 
>>> [Wed May 27 08:59:28 2015].995397 CGI Request 1 on process 82 
>>> [Wed May 27 08:59:28 2015].995464 msWMSLoadGetMapParams():
>>> enabling non-square pixels. [Wed May 27 08:59:28 2015].996733
>>> msDrawMap(): kicking into non-square pixel preserving mode. 
>>> [Wed May 27 08:59:28 2015].997595 msDrawMap(): rendering using 
>>> outputformat named png (AGG/PNG). [Wed May 27 08:59:28
>>> 2015].997614 msDrawMap(): WMS/WFS set-up and query, 0.000s [Wed
>>> May 27 08:59:28 2015].998950
>>> msDrawRasterLayerLow(satellite_mod): entering. [Wed May 27
>>> 08:59:29 2015].651061 msDrawMap(): Layer 0 (satellite_mod), 
>>> 0.653s [Wed May 27 08:59:29 2015].651143 msDrawMap(): Drawing
>>> Label Cache, 0.000s [Wed May 27 08:59:29 2015].651167
>>> msDrawMap() total time: 0.656s [Wed May 27 08:59:29
>>> 2015].681373 msSaveImage(stdout) total time: 0.030s [Wed May 27
>>> 08:59:29 2015].681769 mapserv request processing time 
>>> (msLoadMap not incl.): 0.686s
>>> 
>>> 
>>> * map file
>>> 
>>> 
>>> MAP NAME "wms_test" STATUS ON EXTENT -180 -90 180 90 IMAGECOLOR
>>> 210 210 210 IMAGETYPE png SIZE 1080 614 UNITS dd
>>> 
>>> CONFIG "MS_ERRORFILE" "/tmp/wms_test_error.txt" DEBUG 2
>>> 
>>> 
>>> PROJECTION #this is WGS84 "init=epsg:4326" END
>>> 
>>> 
>>> SYMBOLSET "etc/symbols.sym" FONTSET "etc/fonts/fonts.txt"
>>> 
>>> WEB IMAGEPATH /tmp/ IMAGEURL "/tmp/"
>>> 
>>> ERROR "/error.html" EMPTY "/no_result.html"
>>> 
>>> 
>>> METADATA ### Enable WFS support "wms_title"           "wms
>>> test" "wms_onlineresource"  "http://localhost/wms?" "wms_srs"
>>> "EPSG:4326" "wms_enable_request"  "GetCapabilities GetMap
>>> GetFeatureInfo GetLegendGraphic" "ows_enable_request"
>>> "GetCapabilities GetMap GetFeatureInfo GetLegendGraphic" 
>>> "ows_extent" "-180 -90 180 90" "wfs_title"           "wfs
>>> test" #necessary for the WMS GetFeatureInfo request 
>>> "WMS_FEATURE_INFO_MIME_TYPE" "text/html" END
>>> 
>>> END
>>> 
>>> LEGEND STATUS on KEYSIZE 10 10 LABEL SIZE 9 COLOR 0 0 0 TYPE
>>> truetype ENCODING UTF-8 FONT sans FORCE false PARTIALS true 
>>> POSITION AUTO END TEMPLATE "template/legend.html" # HTML
>>> template file END
>>> 
>>> LAYER NAME satellite_mod
>>> 
>>> METADATA "wms_title"     "World Map Lite" "unit"
>>> "false" END #end of wms metadata
>>> 
>>> DATA data/satelliteMod.png TYPE RASTER STATUS ON END #map end 
>>> END
>>> 
>>> 
>>> * Dockerfile
>>> 
>>> FROM debian:jessie
>>> 
>>> ENV GMS_DIR=/genes-mapserver ENV LANG C.UTF-8
>>> 
>>> # Update and upgrade system RUN apt-get -qq update
>>> --fix-missing && \ apt-get install -y cgi-mapserver
>>> mapserver-bin
>>> 
>>> 
>>> RUN mkdir ${GMS_DIR}
>>> 
>>> VOLUME ${GMS_DIR}
>>> 
>>> ENTRYPOINT ["/usr/lib/cgi-bin/mapserv"]
>>> 
>>> 
>>> The actual tests are done within the container by:
>>> 
>>> sudo docker run -v ~/src/genes-mapserver/:/genes-mapserver
>>> --rm --entrypoint=/bin/bash -ti renzok/mapserver-cgi
>>> 
>>> 
>>> thanks for reading :) 
>>> _______________________________________________ mapserver-users
>>> mailing list mapserver-users at lists.osgeo.org 
>>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
> 