[OpenLayers-Users] free proxy wfs

Mon Dec 16 02:19:30 PST 2013

Thank you for your help.

I am using:

var wfs = new OpenLayers.Layer.Vector("wfs", {

        strategies: [new OpenLayers.Strategy.BBOX()],

        protocol: new OpenLayers.Protocol.WFS({

            version: "1.1.0",

            srsName: "EPSG:900913",

            url:  "http://demo.opengeo.org/geoserver/wfs",

            featureType: "states",

            featureNS: "http://www.openplans.org/topp"

        }),

        styleMap: styleMap

    });

//This one works without proxy definition in my server

var wfs2 = new OpenLayers.Layer.Vector("wfs2", {

        strategies: [new OpenLayers.Strategy.BBOX()],

        protocol: new OpenLayers.Protocol.WFS({

            version: "1.1.0",

            srsName: "EPSG:900913",

//            url:  "http://icarus.es.atos.net:8080/geoserver/icarus/wfs",

url:  "http://icarus.es.atos.net/cgi-bin/moia",

            featureType: "planet_osm_line",

            featurePrefix: "icarus",

            geometryName: "way",

            featureNS: "http://icarus.es.atos.net"

        }),

        styleMap: styleMap

    });

//This one doesn’t work unless there is a proxy running on my server (regardless of using geoserver or mapserver WFS url)

So I will research about how to make my geoserver/mapserver to answer with JSONP, but anyway there is need of write a different openlayers javascript code to use the wfs configured that way?

Cheers,

Mario.

From: Mark Prins [mailto:mc.prins at gmail.com] 
Sent: lunes, 16 de diciembre de 2013 11:02
To: Mario Nuñez Jimenez
Cc: openlayers-users
Subject: Re: [OpenLayers-Users] free proxy wfs

2013/12/16 Mario Nuñez Jimenez <mario.nunez at atos.net>

Dear list,

I am wondering why there are WFS that doesn’t need a proxy to work.

it's not the WFS that needs the proxy, it's your browser that needs a proxy (and that needs to run on the origin of your webapplication); only if you manage to break the browser's security sandbox with regard to X-domain Http Request (XHR) you will not need a proxy.. (not recommended)

If you can get your WFS to produce json as a response format you may be able to use JSONP (and stay outside the XHR sandbox) in your application (you would probably need to re-write the controls that issue the WFS requests though).

	I tried in my openlayers web application:

	http://demo.opengeo.org/geoserver/wfs

	And it works without having any proxy configuration, but to use services built by me with mapserver or geoserver I had to configure a python proxy to avoid cross domain issues.

I doubt this is true; I think you will find that all the examples running on openlayers.org use the proxy at http://openlayers.org/dev/examples/proxy.cgi eg. http://openlayers.org/dev/examples/proxy.cgi?url=http%3A%2F%2Fdemo.opengeo.org%2Fgeoserver%2Fwfs

	What is the difference between that service and mine?

this hard to tell without your service.

	How could I deploy a working proxy free WFS?

host your WFS inside/as part of your webservice hosting your application (same base url)

eg: http//yourwebhost/webapp/ and http//yourwebhost/wfs/

	Is that possible?

	Any help will be much appreciated.

	Thank you in advance.

	Cheers,

	Mario Núñez Jiménez

	GEO Lab
	Transport, Turism and Environment Sector
	Public, Health and Transport Market
	AtoS Research & Innovation
	C/ Albarracín, 25 - 28037 Madrid (Spain)

	T +34 912148100 <tel:%2B34%20912148100> 
	F +34 917543252 <tel:%2B34%20917543252> 
	mario.nunez at atos.net <mailto:mario.nunez at atos.net>  

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the sender endeavours to maintain a computer virus-free network, 
the sender does not warrant that this transmission is virus-free and 
will not be liable for any damages resulting from any virus transmitted. 

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destinada solamente a la(s) persona(s) mencionadas anteriormente 
pueden estar protegidos por secreto profesional. 
Si usted recibe este correo electronico por error, gracias por informar 
inmediatamente al remitente y destruir el mensaje. 
Al no estar asegurada la integridad de este mensaje sobre la red, Atos 
no se hace responsable por su contenido. Su contenido no constituye ningun 
compromiso para el grupo Atos, salvo ratificacion escrita por ambas partes. 
Aunque se esfuerza al maximo por mantener su red libre de virus, el emisor 
no puede garantizar nada al respecto y no sera responsable de cualesquiera 
danos que puedan resultar de una transmision de virus. 
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