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JQuery AJAX request fails with 503 error with only "http://example.com" as value

I have the strangest problem. This is my javascript:

var value = "some_value";
$.ajax({
  url: "process.php",
  type: "POST",
  dataType: "json",
  data: {
    value: value
  },
  success: function(data) {
    console.log(data);
  }
});

There are no surprises here. This is my process.php:

<?php exit; ?>

It doesn't really matter what is inside process.php

. The request is executed every time, unless the value is a valid URL. FROM

var value = "http://example.com"

at the beginning the request will end with error 503 The service is temporarily unavailable. What's wrong with my server configuration? I don't know what to try. I don't have .htaccess. Browser: Firefox 29.

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1 answer


This is almost certainly a web application firewall . Check if your server is running mod_security

. You will need to look at the rules in use mod_security

or others that are running on the server to find the one that is blocking urls.



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