How to bypass Cross origin policy

Question

Mobile app where it needs to get access to a JSON file in another server. And its showing cross origin policy blocked. So is there any way to bypass or have the access to the file ?

Answer 1

As already answered, you want a simple php proxy script.

This way your server grabs the json file and you simply access your server from client side. . That way javascript is only dealing with the same domain.

<?php
  header('Content-Type: application/json');
  echo file_get_contents('http://example.com/data.json');
?>

Proxy.php

<?php
  header('Content-Type: application/json');
  echo file_get_contents('http://example.com/'.$_REQUEST['file']);
?>

Another way also would be to send all of the request headers as a query string, this could be post/get as well

if (isset($_REQUEST['query'])) {
    $sQuery = http_build_query($_REQUEST);
    header('Content-Type: application/json');
    echo file_get_contents('https://www.example.com?'.$sQuery);
    exit;
}

?>

Using the second example you can try something like http://localhost/proxy.php?file=somefile.json

HTACCESS METHOD

Refer the following page about using a htaccess file on the server htaccess Access-Control-Allow-Origin

<FilesMatch ".(json|js|jsn)">
    Header set Access-Control-Allow-Origin "*"
</FilesMatch>