AW: [OpenLayers-Users] Problems with setting up a proxy.php
Arnd Wippermann
arnd.wippermann at web.de
Wed Sep 14 15:41:14 EDT 2011
Hi,
use your proxy to request the GetCapabilities and see, if it works
http://.../proxy.php?url=http://sub.domain.com/geoserver/wfs?service=wfs&ver
sion=1.1.0&request=GetCapabilities
If it works, then it seem to be some misconfiguration with the map and the
WFS layer.
Arnd
-----Ursprüngliche Nachricht-----
Von: openlayers-users-bounces at lists.osgeo.org
[mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von Gabriele
Seitz
Gesendet: Mittwoch, 14. September 2011 13:22
An: users at openlayers.org
Betreff: [OpenLayers-Users] Problems with setting up a proxy.php
Hi,
I have got problems, getting a proxy-server for using WFS running on my
linux-server. Geoserver is ok and serving WMS.
I gave up on getting to run proxy.cgi, as described in
"http://trac.osgeo.org/openlayers/wiki/FrequentlyAskedQuestions#ProxyHost",
but in this forum found a hint on a proxy.php
This is what I did (using firefox 6.0.2):
I copied the proxy.php to a location on the server where I can call ist by
typing "http://sub.domain.com/proxy.php?url="
Firefox shows:
XML-Verarbeitungsfehler: Kein Element gefunden
Adresse: http://sub.domain.com/proxy.php?url=
Zeile Nr. 2, Spalte 1:
(which is something like "XML-computing error. no element found, adress
http... line 2, column 1")
In my script, that defines the WFS, I am using 'OpenLayers.ProxyHost=
"http://sub.domain.com/proxy.php?url=";' before defining a WFS-layer
Definition of WFS like this:
var pointlayer =new OpenLayers.Layer.Vector("WFS", {
strategies: [new OpenLayers.Strategy.BBOX()],
protocol: new OpenLayers.Protocol.WFS({
url:
"http://sub.domain.com/geoserver/MMPbasic/wfs",
featureType: "gis_elemente",
featureNS:
"http://sub.domain.com/geoserver/MMPbasic"
}),
styleMap: new OpenLayers.StyleMap({
strokeWidth: 3,
strokeColor: "#333333"
}),
});
Firebug shows:
XML-Verarbeitungsfehler: Kein Element gefunden Adresse:
moz-nullprincipal:{ff05177f-b54a-42f3-a833-4eb51f10ca69} Zeile Nr. 1, Spalte
1:
which is basicly the same as above, except that it doesn't show the adress
but some mozilla-stuff.
In DOM I find the layer, but no features in it.
Definition of WMS from the same source is okay and shows correctly
var flaglayer = new OpenLayers.Layer.WMS("WMS",
"http://sub.domain.com/geoserver/MMPbasic/wms",
{
layers: 'MMPbasic:gis_elemente',
transparent:true
}
);
CetCapabilities-Request
http://sub.domain.com/geoserver/wfs?service=wfs&version=1.1.0&request=GetCap
abilities
seems okay to me. I can see the requested featuretype.
Is there something wrong with my code or with the Proxy. I give you the code
of proxy.php at the end.
Thanks for helping.
Gabriele
the proxy.php:
<?php
// Taken from Community Mapbuilder svn trunk
//
http://svn.codehaus.org/mapbuilder/trunk/mapbuilder/server/php/proxy.php
// on 10 September 2008
/*
License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
$Id: proxy.php,v 1.2 2008-09-10 14:21:44 tkralidi Exp $
$Name: $
*/
////////////////////////////////////////////////////////////////////////////
////
// Description:
// Script to redirect the request
http://host/proxy.php?url=http://someUrl
// to http://someUrl .
//
// This script can be used to circumvent javascript's security
requirements
// which prevent a URL from an external web site being called.
//
// Author: Nedjo Rogers
////////////////////////////////////////////////////////////////////////////
////
// read in the variables
if(array_key_exists('HTTP_SERVERURL', $_SERVER)){
$onlineresource=$_SERVER['HTTP_SERVERURL'];
}else{
$onlineresource=$_REQUEST['url'];
}
$parsed = parse_url($onlineresource);
$host = @$parsed["host"];
$path = @$parsed["path"] . "?" . @$parsed["query"];
if(empty($host)) {
$host = "localhost";
}
$port = @$parsed['port'];
if(empty($port)){
$port="80";
}
$contenttype = @$_REQUEST['contenttype'];
if(empty($contenttype)) {
$contenttype = "text/xml";
}
$data = @$GLOBALS["HTTP_RAW_POST_DATA"];
// define content type
header("Content-type: " . $contenttype);
if(empty($data)) {
$result = send_request();
}
else {
// post XML
$posting = new HTTP_Client($host, $port, $data);
$posting->set_path($path);
$result = $posting->send_request();
}
// strip leading text from result and output result
$len=strlen($result);
$pos = strpos($result, "<");
if($pos > 1) {
$result = substr($result, $pos, $len);
}
//$result = str_replace("xlink:","",$result);
echo $result;
// define class with functions to open socket and post XML
// from http://www.phpbuilder.com/annotate/message.php3?id=1013274
by Richard Hundt
class HTTP_Client {
var $host;
var $path;
var $port;
var $data;
var $socket;
var $errno;
var $errstr;
var $timeout;
var $buf;
var $result;
var $agent_name = "MyAgent";
//Constructor, timeout 30s
function HTTP_Client($host, $port, $data, $timeout = 30) {
$this->host = $host;
$this->port = $port;
$this->data = $data;
$this->timeout = $timeout;
}
//Opens a connection
function connect() {
$this->socket = fsockopen($this->host,
$this->port,
$this->errno,
$this->errstr,
$this->timeout
);
if(!$this->socket)
return false;
else
return true;
}
//Set the path
function set_path($path) {
$this->path = $path;
}
//Send request and clean up
function send_request() {
if(!$this->connect()) {
return false;
}
else {
$this->result = $this->request($this->data);
return $this->result;
}
}
function request($data) {
$this->buf = "";
fwrite($this->socket,
"POST $this->path HTTP/1.0\r\n".
"Host:$this->host\r\n".
"User-Agent: $this->agent_name\r\n".
"Content-Type: application/xml\r\n".
"Content-Length: ".strlen($data).
"\r\n".
"\r\n".$data.
"\r\n"
);
while(!feof($this->socket))
$this->buf .= fgets($this->socket, 2048);
$this->close();
return $this->buf;
}
function close() {
fclose($this->socket);
}
}
function send_request() {
global $onlineresource;
$ch = curl_init();
$timeout = 5; // set to zero for no timeout
// fix to allow HTTPS connections with incorrect certificates
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt ($ch, CURLOPT_URL,$onlineresource);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt ($ch, CURLOPT_ENCODING , "gzip, deflate");
$file_contents = curl_exec($ch);
curl_close($ch);
$lines = array();
$lines = explode("\n", $file_contents);
if(!($response = $lines)) {
echo "Unable to retrieve file '$service_request'";
}
$response = implode("",$response);
return $response;
}
?>
--
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tp6792124p6792124.html
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