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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>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?</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Skweda O'Bomsawin</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Tahoma><span
lang=FR style='font-size:10.0pt;font-family:Tahoma'>-----Message d'origine-----<br>
<b><span style='font-weight:bold'>De :</span></b> UMN MapServer Users List
[mailto:</span></font><font size=2 face=Tahoma><span lang=FR style='font-size:
10.0pt;font-family:Tahoma'>MAPSERVER-USERS@LISTS.UMN.EDU</span></font><font
size=2 face=Tahoma><span lang=FR style='font-size:10.0pt;font-family:Tahoma'>] <b><span
style='font-weight:bold'>De la part de</span></b> Daniele Margotti<br>
<b><span style='font-weight:bold'>Envoyé :</span></b> 6 décembre 2004
07:35<br>
<b><span style='font-weight:bold'>À :</span></b> </span></font><font
size=2 face=Tahoma><span lang=FR style='font-size:10.0pt;font-family:Tahoma'>MAPSERVER-USERS@LISTS.UMN.EDU</span></font><font
size=2 face=Tahoma><span lang=FR style='font-size:10.0pt;font-family:Tahoma'><br>
<b><span style='font-weight:bold'>Objet :</span></b> [UMN_MAPSERVER-USERS]
Internal Server Error</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span lang=FR-CA style='font-size:12.0pt'> </span></font></p>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Hi list,</span></font></p>
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<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I use CGI MapServer 4.2.3 on a RH9
with Apache 2.0.50:</span></font></p>
</div>
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face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'><!-- 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 --></span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>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.</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I think the problem is due to the
shapefile (or a part of it), but... how can I be sure of it?</span></font></p>
</div>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>The browser only show the
"Internal Server Error" page.</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>The Apache error log says:
"[Mon Dec 06 07:13:04 2004] [error] [client 172.16.20.4] Premature end of
script headers: mapserv"</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I compiled MapServer with
--enable-debug, set "DEBUG TRUE" in the map section of the mapfile,
and tried to use shp2img with these results:</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>----------------------------------------------------------------------------</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>[root@redhat cs]#
/dati/geobase/bin/shp2img -m cs.map -o /dati/daniele.png -e 2491361 4510665
2492415 4511455<br>
[Mon Dec 6 07:24:37 2004].748031 msDrawMap(): Layer 0 (Confini_comunali),
0.040s<br>
[Mon Dec 6 07:24:41 2004].893212 msDrawMap(): Layer 1
(Base_cartografica), 4.145s<br>
[Mon Dec 6 07:24:41 2004].908452 msDrawMap(): Layer 2 (Edifici), 0.015s<br>
[Mon Dec 6 07:24:41 2004].918383 msDrawMap(): Layer 3 (Aree_traffico),
0.010s<br>
Segmentation fault</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>----------------------------------------------------------------------------</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>[root@redhat cs]#
/dati/geobase/bin/shp2img -m cs.map -o /dati/daniele.png -e 2491361 4510665
2492415 4511455 -l Elementi_stradali<br>
Segmentation fault</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>----------------------------------------------------------------------------</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>When shp2img processes the
"bad" layer ('Elementi_stradali'), it exits with a 'Segmentation
fault' and without a more explicit error message.</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I launched the following
command (where "road_elements.shp" is the probably bad shapefile):</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>[root@redhat cat_strade]# ogrinfo
-al road_elements.shp -spat 2491361 4510665 2492415 451145</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>It returns a 85 Kb output with
apparently no detected errors.</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>How can I understand where the error
lies?</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Is there a more powerful debug tool?</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Thank you,</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> Daniele</span></font></p>
</div>
<div>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> </span></font></p>
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