Hi,I found this sample http://developers.arcgis.com/en/javascript/jssamples/exp_webstorage.html, but I found some problems to download and execute it.The problem is that when the XMLHttpRequest request pass throw my PHP proxy, the encoder generates a corrupted base64 tiles.And no more corrupted tiles when I display a Map service that not require a proxy.there is my PHP proxy code :
<?php
/***************************************************************************
* USAGE
* [1] http://<this-proxy-url>?<arcgis-service-url>
* [2] http://<this-proxy-url>?<arcgis-service-url> (with POST body)
* [3] http://<this-proxy-url>?<arcgis-service-url>?token=ABCDEFGH
*
* note: [3] is used when fetching tiles from a secured service and the
* JavaScript app sends the token instead of being set in this proxy
*
* REQUIREMENTS
* - cURL extension for PHP must be installed and loaded. To load it,
* add the following lines to your php.ini file:
* extension_dir = "<your-php-install-location>/ext"
* extension = php_curl.dll
*
* - Turn OFF magic quotes for incoming GET/POST data: add/modify the
* following line to your php.ini file:
* magic_quotes_gpc = Off
*
***************************************************************************/
/***************************************************************************
* <true> to only proxy to the sites listed in '$serverUrls'
* <false> to proxy to any site (are you sure you want to do this?)
*/
$mustMatch = true;
/***************************************************************************
* ArcGIS Server services this proxy will forward requests to
*
* 'url' = location of the ArcGIS Server, either specific URL or stem
* 'matchAll' = <true> to forward any request beginning with the URL
* <false> to forward only the request that exactly matches the url
* 'token' = token to include for secured service, if any, otherwise leave it
* empty
*/
$serverUrls = array(
array( 'url' => 'http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/', 'matchAll' => true, 'token' => '' ),
array( 'url' => 'http://sampleserver2.arcgisonline.com/ArcGIS/rest/services/', 'matchAll' => true, 'token' => '' ),
array( 'url' => 'http://sampleserver1a.arcgisonline.com/arcgisoutput/', 'matchAll' => true, 'token' => '' ),
array( 'url' => 'http://sampleserver1b.arcgisonline.com/arcgisoutput/', 'matchAll' => true, 'token' => '' ),
array( 'url' => 'http://sampleserver1c.arcgisonline.com/arcgisoutput/', 'matchAll' => true, 'token' => '' ),
array( 'url' => 'http://services.arcgisonline.com/ArcGIS/rest/services/', 'matchAll' => true, 'token' => '' ),
array( 'url' => 'http://services1.arcgis.com/', 'matchAll' => true, 'token' => '' )
);
/***************************************************************************/
function is_url_allowed($allowedServers, $url) {
$isOk = false;
$url = trim($url, "\/");
for ($i = 0, $len = count($allowedServers); $i < $len; $i++) {
$value = $allowedServers[$i];
$allowedUrl = trim($value['url'], "\/");
if ($value['matchAll']) {
if (stripos($url, $allowedUrl) === 0) {
$isOk = $i; // array index that matched
break;
}
}
else {
if ((strcasecmp($url, $allowedUrl) == 0)) {
$isOk = $i; // array index that matched
break;
}
}
}
return $isOk;
}
// check if the curl extension is loaded
if (!extension_loaded("curl")) {
header('Status: 500', true, 500);
echo 'cURL extension for PHP is not loaded! <br/> Add the following lines to your php.ini file: <br/> extension_dir = "<your-php-install-location>/ext" <br/> extension = php_curl.dll';
return;
}
$targetUrl = $_SERVER['QUERY_STRING'];
if (!$targetUrl) {
header('Status: 400', true, 400); // Bad Request
echo 'Target URL is not specified! <br/> Usage: <br/> http://<this-proxy-url>?<target-url>';
return;
}
$parts = preg_split("/\?/", $targetUrl);
$targetPath = $parts[0];
// check if the request URL matches any of the allowed URLs
if ($mustMatch) {
$pos = is_url_allowed($serverUrls, $targetPath);
if ($pos === false) {
header('Status: 403', true, 403); // Forbidden
echo 'Target URL is not allowed! <br/> Consult the documentation for this proxy to add the target URL to its Whitelist.';
return;
}
}
// add token (if any) to the url
$token = $serverUrls[$pos]['token'];
if ($token) {
$targetUrl .= (stripos($targetUrl, "?") !== false ? '&' : '?').'token='.$token;
}
// open the curl session
$session = curl_init();
// set the appropriate options for this request
$options = array(
CURLOPT_URL => $targetUrl,
CURLOPT_HEADER => false,
CURLOPT_HTTPHEADER => array(
'Content-Type: ' . $_SERVER['CONTENT_TYPE'],
'Referer: ' . $_SERVER['HTTP_REFERER']
),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_FOLLOWLOCATION => true
);
// put the POST data in the request body
$postData = file_get_contents("php://input");
if (strlen($postData) > 0) {
$options[CURLOPT_POST] = true;
$options[CURLOPT_POSTFIELDS] = $postData;
}
curl_setopt_array($session, $options);
// make the call
$response = curl_exec($session);
$code = curl_getinfo($session, CURLINFO_HTTP_CODE);
$type = curl_getinfo($session, CURLINFO_CONTENT_TYPE);
curl_close($session);
// set the proper Content-Type
header("Status: ".$code, true, $code);
header("Content-Type: ".$type);
echo $response;
?>
