[UMN_MAPSERVER-USERS] RE : [UMN_MAPSERVER-USERS] Internal Server Error

Tue Dec 7 09:32:20 EST 2004

Are you sure of the two styles definition in your layer?  Try to remove your
MAXSCALE and load the entire map.  If this layer is actually the problem,
you should have an internal server error.

Skweda O'Bomsawin

-----Message d'origine-----
De : UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] De la
part de Daniele Margotti
Envoyé : 7 décembre 2004 05:33
À : MAPSERVER-USERS at LISTS.UMN.EDU
Objet : [UMN_MAPSERVER-USERS] RE : [UMN_MAPSERVER-USERS] Internal Server
Error

Here is it:

----------------------------------------------------------------------------

  LAYER  #Elementi stradali
    NAME "Elementi_stradali"
  GROUP "A - Catasto delle strade"
  DATA "./cat_strade/road_elements.shp"
  TYPE line
  STATUS on
  CLASSITEM "ID_LINE"
  MAXSCALE 50000
    MINSCALE 0
  TRANSPARENCY 100
    TRANSFORM true
  SYMBOLSCALE 2000
  HEADER "./templates/nocsup_re_header.html"
  FOOTER "./templates/nocsup_re_footer.html"
    METADATA
   "Oggetto"    "Elementi stradali"
      "Data creazione"    "03/03/2004"
      gix_layername        "Elementi_stradali"
      gix_layerfieldnames
"LAYER|ID_DATASET|ID_LINE|SPLIT|CLASS|ID_EDGE|FROMP|TOP|SOURCE|UFFICIALE|CON
VENZION|PROPRIETAR|GESTORE|AMMINISTRA|TECNICO|LUNGHEZZA|DIVISIONE|DIREZIONE|
DENOMIN|PERCORSO|"
      gix_layerfieldalias
"Layer|Id_dataset|Id_line|Split|Class|Id_edge|Fromp|Top|Source|Ufficiale|Con
venzion|Proprietar|Gestore|Amministra|Tecnico|Lunghezza|Divisione|Direzione|
Denomin|Percorso|"
      wms_abstract                     "fiorea Elementi stradali ** Gix
Generated MapFile"
      wms_title            "Elementi stradali"
      wms_srs              "NONE"
    END
    CLASS
      NAME 'Road elements'
      TEMPLATE "./templates/nocsup_re_query.html"
   STYLE
    COLOR 0 0 0
    SYMBOL "punto"
    SIZE 4
    ANTIALIAS TRUE
   END
   STYLE
    COLOR 0 0 255
    SYMBOL "punto"
    SIZE 2
    ANTIALIAS TRUE
   END
    END #CLASS
  END  # LAYER
----------------------------------------------------------------------------

As I told in another message, I can browse the map (and this layer) until I
remain out of certain extents that give me error.

    Daniele

-----Messaggio originale-----
Da: Skweda O'Bomsawin [mailto:sobomsawin at kassini.com] 
Inviato: lunedì 6 dicembre 2004 15.30
A: 'Daniele Margotti'; MAPSERVER-USERS at LISTS.UMN.EDU
Oggetto: RE : [UMN_MAPSERVER-USERS] Internal Server Error

Most of the time, internal server error is caused by a syntax error in the
mapfile.  Can you post the Elementi_stradali layer section of your mapfile?

Skweda O'Bomsawin

-----Message d'origine-----
De : UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] De la
part de Daniele Margotti
Envoyé : 6 décembre 2004 07:35
À : MAPSERVER-USERS at LISTS.UMN.EDU
Objet : [UMN_MAPSERVER-USERS] Internal Server Error

Hi list,

I use CGI MapServer 4.2.3 on a RH9 with Apache 2.0.50:

<!-- MapServer version 4.2.3 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP
OUTPUT=PDF SUPPORTS=FREETYPE INPUT=EPPL7 INPUT=OGR INPUT=GDAL
INPUT=SHAPEFILE -->

All works, but I have a map that returns an "Internal Server Error" when I
try to zoom and show a certain extent with a specific layer.

I think the problem is due to the shapefile (or a part of it), but... how
can I be sure of it?

The browser only show the "Internal Server Error" page.

The Apache error log says: "[Mon Dec 06 07:13:04 2004] [error] [client
172.16.20.4] Premature end of script headers: mapserv"

I compiled MapServer with --enable-debug, set "DEBUG TRUE" in the map
section of the mapfile, and tried to use shp2img with these results:

----------------------------------------------------------------------------

[root at redhat cs]# /dati/geobase/bin/shp2img -m cs.map -o /dati/daniele.png
-e 2491361 4510665 2492415 4511455
[Mon Dec  6 07:24:37 2004].748031 msDrawMap(): Layer 0 (Confini_comunali),
0.040s
[Mon Dec  6 07:24:41 2004].893212 msDrawMap(): Layer 1 (Base_cartografica),
4.145s
[Mon Dec  6 07:24:41 2004].908452 msDrawMap(): Layer 2 (Edifici), 0.015s
[Mon Dec  6 07:24:41 2004].918383 msDrawMap(): Layer 3 (Aree_traffico),
0.010s
Segmentation fault

----------------------------------------------------------------------------

[root at redhat cs]# /dati/geobase/bin/shp2img -m cs.map -o /dati/daniele.png
-e 2491361 4510665 2492415 4511455 -l Elementi_stradali
Segmentation fault

----------------------------------------------------------------------------

When shp2img processes the "bad" layer ('Elementi_stradali'), it exits with
a 'Segmentation fault' and without a more explicit error message.

I launched the following command (where "road_elements.shp" is the probably
bad shapefile):

[root at redhat cat_strade]# ogrinfo -al road_elements.shp -spat 2491361
4510665 2492415 451145

It returns a 85 Kb output with apparently no detected errors.

How can I understand where the error lies?

Is there a more powerful debug tool?

Thank you,

    Daniele

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