[mapserver-users] Re: MapScript WMS request

[Mr. Puneet Kishor]

On Sep 8, 2011, at 1:03 PM, thomas bonfort wrote:

> it goes in map->web->metadata
> 

I guessed as much, but I can't fathom the syntax. The webObj doesn't seem to have any constructor, and I don't see any documentation. Could you please point me to an example?



> 
> On Thu, Sep 8, 2011 at 19:48, Mr. Puneet Kishor <punk.kish at gmail.com> wrote:
>> a bit more investigation on producing a WMS response via Perl MapScript reveals the following error
>> 
>>  <?xml version='1.0' encoding="ISO-8859-1" standalone="no" ?>
>>  <!DOCTYPE ServiceExceptionReport SYSTEM "http://schemas.opengis.net/wms/1.1.0/exception_1_1_0.dtd">
>>  <ServiceExceptionReport version="1.1.0">
>>  <ServiceException>
>>  msWMSDispatch(): WMS server error. WMS request not enabled. Check wms/ows_enable_request settings.
>>  </ServiceException>
>>  </ServiceExceptionReport>
>> 
>> So, it seems I have to somehow, somewhere enable 'ows_enable_request'. Looking at the documentation, seems like if I had a map file, I could add the following line to do so
>> 
>>  ows_enable_request '*'
>> 
>> However, I am not using a map file at all. Not finding any documentation on this setting, I tried the following to no avail
>> 
>>  $map->{ows_enable_request} = '*';
>> 
>> 
>> Suggestions, anyone?
>> 
>> 
>> On Sep 7, 2011, at 10:18 PM, Mr. Puneet Kishor wrote:
>> 
>>> I would really appreciate insight from someone well-versed in the ins and outs of WMS via MapScript. Looking at the discussion at [http://trac.osgeo.org/mapserver/ticket/670], the `img = wms_map.draw()` step seems to be a crucial part of drawing the image.
>>> 
>>> So, I added `my $img = $map->draw();` to my code below, and indeed, the image was drawn and sent back to the browser.
>>> 
>>> Is this something that should be added to the examples in the documentation? Is this the right way to do things? In any case, I am not write to STDOUT, and sending the buffer directly. Instead, my code is very much like a regular request (and it works) --
>>> 
>>>    my $new_extent = $map->{extent};
>>> 
>>>    my $req = new mapscript::OWSRequest();
>>>    $req->setParameter( "SERVICE", "WMS" );
>>>    $req->setParameter( "VERSION", "1.1.0" );
>>>    $req->setParameter( "REQUEST", "GetMap" );
>>>    $req->setParameter( "BBOX", "-180,-90,180,90" );
>>>    $req->setParameter( "LAYERS", "layer_name");
>>>    $req->setParameter( "SRS", "-1");
>>>    $req->setParameter( "WIDTH", "1200");
>>>    $req->setParameter( "HEIGHT", "600");
>>> 
>>>    my $dispatch_out = $map->OWSDispatch( $req );
>>>    my $img = $map->draw();
>>>    my $map_img = 'test_' . sprintf("%0.10d", rand(1000000000)) . '.png';
>>>    $img->save("/path/to/$map_img");
>>>    return send_file("/path/to/$map_img");
>>> 
>>> 
>>> Comments? Corrections?
>>> 
>>> 
>>> On Sep 7, 2011, at 6:12 PM, Mr. Puneet Kishor wrote:
>>> 
>>>> 
>>>> On Sep 7, 2011, at 5:49 PM, Mr. Puneet Kishor wrote:
>>>> 
>>>>> I am trying to convert my MapScript program to a WMS responder. I create my $map where I set all the layers and classes and colors, etc, just like for a normal, non-WMS request that works perfectly correctly.
>>>>> 
>>>>> my $map = undef;
>>>>> $map = mapObj(name => 'mymap') unless defined $map;
>>>>> 
>>>>> my $req = new mapscript::OWSRequest();
>>>>> $req->setParameter( "SERVICE", "WMS" );
>>>>> $req->setParameter( "VERSION", "1.1.0" );
>>>>> $req->setParameter( "REQUEST", "GetCapabilities" );
>>>> 
>>>> I changed the above line to
>>>> 
>>>>  $req->setParameter( "REQUEST", "GetMap");
>>>> 
>>>> but, still no improvement.
>>>> 
>>>> 
>>>>> 
>>>>> mapscript::msIO_installStdoutToBuffer();
>>>>> my $dispatch_out = $map->OWSDispatch( $req );
>>>>> printf "%s\n", mapscript::msIO_getStdoutBufferString();
>>>>> 
>>>>> Except, the above doesn't really do anything for me. I get nothing in my browser. Suggestions?
>>>>> 
>>>>> 
>>>>> --
>>>>> Puneet Kishor
>>>> 
>>> 
>> 
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