[Mapserver-users] mapserv doesn't work

Fri Jun 20 11:16:52 EDT 2003

Chen,

it is very strange that from the commandline mapserv works, but not from your 
browser. Your server should simply start mapserv and stream the output to 
your browser... Are you sure that you have the right mapserv executable in 
the right cgi-bin directory (sorry for the obvious question, don't mean to 
offend... :-)) ? But you won't be the first one to copy your new mapserv in 
an old cgi-bin dir that is not used anymore... (did it once myself).
Try using not only localhost/cgi-bin/mapserv, but add the values you added as 
querystring at the commandline (http:/localhost/cgi-bin/mapserv 
map=/../../map.map&mode=map
What do you get then?
BTW you don't need php to use mapserver, I was wrong in assuming that you used 
php... Mapserver as cgi is just as powerfull as the php/mapscript version, I 
think. At least powerfull enough for this debugging.

Good luck!
Vincent.
On Friday 20 June 2003 16:05, Chen Fu wrote:
> Vincent:
> Thank you for your reponse!
> My mapserv works in "Query...", it print out a lot of
> ascii as you said. I think it is the data of the
> generated image.
> Then what should i do? Should i config something like
> php? My project doesn't use php up to now. But it will
> be accepted if mapserv has to work with php lib.
>
>  --- Vincent Schut <schut at sarvision.com> µÄÕýÎÄ£º>
> Chen,
>
> > The error you get is a very generic error generated
> > by php I think. To find
> > out more about what goes wrong, you should at least
> > run mapserver from the
> > command prompt, and prefereable thourgh a debugger.
> > To run it from the command prompt, type (in the dir
> > where the mapserv
> > executable is):
> > ./mapserv
>
> "QUERY_STRING=map=/var/mapserver/mapfiles/province2.map&mode=map"
>
> > (of course fill in your own mapfile/path and
> > eventual other parameters. I
> > think you need to specify at least map and mode.
> > This example prints the
> > image data to stdout, so you will see your png or
> > gif or whatever scrolling
> > as ascii on you terminal :-)
> > But probably you will see an error message instead
> > of image data.
> >
> > If it is still very generic, like a segmentation
> > fault, you should use a
> > debugger.
> > To run mapserv from the debugger, do the following:
> > make sure you have gdb (the gnu debugger) and type:
> > gdb mapserv
> > run
>
> "QUERY_STRING=map=/var/mapserver/mapfiles/province2.map&mode=map"
>
> > and after the error, type:
> > backtrace
> > This will show you in which function mapserv (or a
> > library) segfaulted.
> > Maybe than you will know what to do. Otherwise, send
> > your experiences and the
> > mapserv and  debugger output to this list and I'm
> > sure you will get more
> > help.
> >
> > Cheers,
> > Vincent Schut.
> >
> > On Friday 20 June 2003 09:12, Chen Fu wrote:
> > > Till£º
> > >    My linux box is base on redhat8. the make
> >
> > generate
> >
> > > some warning but no error. the mapserv is 375445
> > > bytes. I think it is much smaller than the one i
> >
> > used
> >
> > > in win2k. But i config it with gd lib only.
> > >    if i type "./mapserv" it will show
> > > "
> > > This script can only be used to decode form
> >
> > results
> >
> > > and
> > > should be initiated as a CGI process via a httpd
> > > server.
> > > "
> > > Is it mean the file is a validate executable?
> >
> > shp2img
> >
> > > generated in the same procession work very nice.
> > >
> > > I search the archive for that message before i
> >
> > post it
> >
> > > here. But most i found is related to php or some
> >
> > other
> >
> > > thing. Because i am a newbie in compiling
> >
> > mapserver in
> >
> > > linux, so i select the cleanest way, use only gd
> >
> > lib.
> >
> > > But still get into trouble, sigh...
> > >
> > >  --- Till Adams <adams at terrestris.de> µÄÕýÎÄ£º>
> >
> > Dear
> >
> > > Cheng,
> > >
> > > > "premature end of script" is an error which
> >
> > occurs,
> >
> > > > when the compile
> > > > process was broken up: so while compiling, the
> > > > "mapserv" was written but
> > > > not finished. Which linux system do you use? Did
> >
> > you
> >
> > > > get an error
> > > > message when compiling? Try the mailing list
> >
> > archive
> >
> > > > searching for
> > > > contributions fitting to your error message.
> > > >
> > > > Good luck,
> > > > Till
> > > >
> > > > Chen Fu schrieb:
> > > > > Hi!
> > > > > This is my first time to compile mapserver in
> > > >
> > > > linux.
> > > >
> > > > > But I use mapserver in win2k for a long time.
> > > > > First download gd-2.0.15, make and install it.
> > > > > Then i download mapserver4.0b, make it and
> >
> > copy
> >
> > > > > mapserv to cgi-bin.
> > > > > But when i input
> >
> > http://localhost/cgi-bin/mapserv
> >
> > > > ,
> > > >
> > > > > the info in the brower is
> > > > > Server error!
> > > > >
> > > > > The server encountered an internal error and
> >
> > was
> >
> > > > > unable to complete your request.
> > > > >
> > > > >     Error message:
> > > > > Premature end of script headers: mapserv
> > > > >
> > > > > I have tried shp2img, it work fine, and
> >
> > generate
> >
> > > > > proper  image.
> > > > > Can you give me some suggestion?
> > > > >
> > > > >
> > > > > =====
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>
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> >
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> > > > > Mapserver-users at lists.gis.umn.edu
>
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>
> > > > --
> > > >
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> >
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> >
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> > --
> > ______________________________________
> > Vincent Schut
> > Sarvision B.V.
> > Wageningen, The Netherlands
> > www.sarvision.com
>
> =====
> Remote Scensing Satellite Ground Station
> Chinese Academy of Science
>
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-- 
______________________________________
Vincent Schut
Sarvision B.V.
Wageningen, The Netherlands
www.sarvision.com