AW: [OpenLayers-Users] OpenLayers.ProxyHost = '/geoserver/rest/proxy?url=';

Thu Jul 14 09:46:36 EDT 2011

Hello Andreas,
thank you for responding.

Yes I get prompted for credentials.

http://myhost:8080/geoserver/rest/proxy
The following message appears:
http://myhost:8080 verlangt einen Benutzernamen und ein Passwort. Ausgabe der Website: "GeoServer Realm"

I don't want to give everybody full access to my geoserver.

And what about the restriction of requesting only one host at the same time? 

What's in your opinion the best solution for getting feature information of local and remote WMS layers?

Greetings from Salzburg

Lucia

Dipl.-Geogr. Lucia Morper-Busch | Researcher
University of Salzburg | Centre for Geoinformatics - Z_GIS
Schillerstr.30 | Techno-Z, Block 15, 3rd floor | 5020 Salzburg, Austria
Phone +43 (0)662 8044 5298 | Fax +43 (0)662 8044 5260
> Z_GIS...experts for the spatial view

-----Ursprüngliche Nachricht-----
Von: andreas.hocevar at gmail.com [mailto:andreas.hocevar at gmail.com] Im Auftrag von Andreas Hocevar
Gesendet: Donnerstag, 14. Juli 2011 15:17
An: Morper-Busch, Lucia
Cc: openlayers-users at lists.osgeo.org
Betreff: Re: [OpenLayers-Users] OpenLayers.ProxyHost = '/geoserver/rest/proxy?url=';

Hi,

do you get prompted for credentials when you access
http://serverhost:8080/geoserver/rest/proxy ? If this happens, you
have to change the GeoServer security settings to allow unauthorized
access to the proxy.

Other than that, you should not be using a proxy like this to access
sites that require authentication. Because the authentication headers
may be sent to other hosts that you access through the same proxy.

Andreas.

On Wed, Jul 13, 2011 at 4:55 PM, Morper-Busch, Lucia
<Lucia.Morper-Busch at sbg.ac.at> wrote:
> Hello!
> I want to query local and remote feature information for WMS layers.
> I have a server on which stays a javascript/html map viewer with ExtJs and Openlayers, in the back runs a Geoserver 2.0.2.
> I installed the Geoserver Proxy Extension on my server to access also a remote server.
> On my server the html file is in the C:\Program Files\GeoServer 2.0.2\webapps\geoserver folder.
> I added two hosts (without port) to the permitted hostnames: the server localhost (but with the server address not 'localhost') and a remote server host (IP address) where another geoserver is running.
> When I try to access the html map viewer from another PC the getfeatureinfo request requires an authentification (the geoserver username and password). And only the first host on that I try to ask the feature information gives me an reply, the other host is not responding. But when I begin with the other host it's the other way round. Like random.
> When I insert the url in the browser address box (http://serverhost:8080/geoserver/rest/proxy?url=getfeatureinfo-request) I have to authentificate!
> On the server the getfeatureinfo request works without authentification, but that's not intended.
> Without proxyhost I get only the feature information for the layers that are local.
> I tried also OpenLayers.ProxyHost = "/cgi-bin/proxy.cgi?url="; But the response is only the plain text of the cgi file.
> Who's familiar with proxy and local/remote WMS layers?
> Thank you for suggestions
> Lucia
>
> Dipl.-Geogr. Lucia Morper-Busch | Researcher
> University of Salzburg | Centre for Geoinformatics - Z_GIS
> Schillerstr.30 | Techno-Z, Block 15, 3rd floor | 5020 Salzburg, Austria
> Phone +43 (0)662 8044 5298 | Fax +43 (0)662 8044 5260
>> Z_GIS...experts for the spatial view
>
> -----Ursprüngliche Nachricht-----
> Von: openlayers-users-bounces at lists.osgeo.org [mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von Bryan Hempen
> Gesendet: Samstag, 09. Juli 2011 23:42
> An: openlayers-users at lists.osgeo.org
> Betreff: [OpenLayers-Users] WFS getFeature with Filter resulting in InternalServer Error
>
> Hey!
>
> I am trying to use the example at
> http://openlayers.org/dev/examples/wfs-spatial-filter.html with my own
> WFS (UMN Mapserver) but I am having a hard time getting some problems
> fixed. When I load my test page for the first time OpenLayers sends the
> following request:
>
> <wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" service="WFS"
> version="1.0.0" xsi:schemaLocation="http://www.opengis.net/wfs
> http://schemas.opengis.net/wfs/1.0.0/WFS-transaction.xsd">
> <wfs:Query typeName="omega">
> <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc">
> <ogc:BBOX>
> <ogc:PropertyName>the_geom</ogc:PropertyName>
> <gml:Box xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:4326">
> <gml:coordinates decimal="." cs="," ts=" ">135.45,-47.425
> 157.95,-36.175</gml:coordinates>
> </gml:Box>
> </ogc:BBOX>
> </ogc:Filter>
> </wfs:Query>
> </wfs:GetFeature>
>
> I get a valid response and the data is properly displayed on the map.
> When, however, I try to use a spatial filter in the request, like this...
>
> <wfs:GetFeature xmlns:wfs="http://www.opengis.net/wfs"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" service="WFS"
> version="1.0.0" xsi:schemaLocation="http://www.opengis.net/wfs
> http://schemas.opengis.net/wfs/1.0.0/WFS-transaction.xsd">
> <wfs:Query xmlns:ms="http://mapserver.gis.umn.edu/mapserver"
> typeName="ms:omega">
> <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc">
> <ogc:And>
> <ogc:Intersects>
> <ogc:PropertyName>the_geom</ogc:PropertyName>
> <gml:Polygon xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:4326">
> <gml:outerBoundaryIs>
> <gml:LinearRing>
> <gml:coordinates decimal="." cs="," ts="
> ">142.28349609375,-40.5255859375 142.2615234375,-43.49189453125
> 148.1501953125,-44.15107421875 149.40263671875,-39.44892578125
> 142.28349609375,-40.5255859375</gml:coordinates>
> </gml:LinearRing>
> </gml:outerBoundaryIs>
> </gml:Polygon>
> </ogc:Intersects>
> <ogc:BBOX>
> <ogc:PropertyName>the_geom</ogc:PropertyName>
> <gml:Box xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:4326">
> <gml:coordinates decimal="." cs="," ts=" ">135.45,-47.425
> 157.95,-36.175</gml:coordinates>
> </gml:Box>
> </ogc:BBOX>
> </ogc:And>
> </ogc:Filter>
> </wfs:Query>
> </wfs:GetFeature>
>
> ... one of the two following things will happen:
>
> 1. I get a "Internal Server Error  The server encountered an internal
> error or misconfiguration and was unable to complete your request." The
> logfile says "Premature end of script headers: mapserv.exe, referer:
> http://localhost/".
>
> 2. This is the response:
>
> <wfs:FeatureCollection xmlns:wfs="http://www.opengis.net/wfs"
> xmlns:ms="http://mapserver.gis.umn.edu/mapserver"
> xmlns:gml="http://www.opengis.net/gml"
> xmlns:ogc="http://www.opengis.net/ogc"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://www.opengis.net/wfs
> http://schemas.opengis.net/wfs/1.0.0/WFS-basic.xsd
> http://mapserver.gis.umn.edu/mapserver
> http://localhost/cgi-bin/mapserv.exe?map=E:/ms4w/Apache/htdocs/mapservertest/wfs.map&amp;SERVICE=WFS&amp;VERSION=1.0.0&amp;REQUEST=DescribeFeatureType&amp;TYPENAME=ms:omega&amp;OUTPUTFORMAT=XMLSCHEMA">
>
> <gml:boundedBy>
> <gml:Box srsName="EPSG:4326">
> <gml:coordinates>-1.000000,-1.000000 -1.000000,-1.000000</gml:coordinates>
> </gml:Box>
> </gml:boundedBy>
> </wfs:FeatureCollection>
>
> Which one of the two possibilities happens appears to be random. I am
> using the proxy.cgi and when I run http://localhost/cgi-bin/proxy.cgi I
> see the OpenLayers website. Any ideas?
>
> This is how my wfs-spatial-filter.js looks like:
>
> OpenLayers.ProxyHost= "/cgi-bin/proxy.cgi?url=";
>
> .....
>
> var layer = new OpenLayers.Layer.Vector("WFS", {
>     strategies: [new OpenLayers.Strategy.BBOX()],
>     protocol: new OpenLayers.Protocol.WFS({
>         url:
> "http://localhost/cgi-bin/mapserv.exe?map=E:/ms4w/Apache/htdocs/mapservertest/wfs.map",
>         featureType: "omega",
>         featurePrefix: "ms"
>     })
> });
>
> ....
>
> The rest of the file looks exactly like in the example at
> http://openlayers.org/dev/examples/wfs-spatial-filter.js
>
> Thanks for your help!
>
> Bryan
>
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-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.