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I have written a simple plugin to send some security http headers. I've tested it on various wordpress installations but on a wordpress multisite network it seems that the headers are not sended. The plugin is active for the entire network and in the .htaccess file there is no instruction to set the headers. Is there any error with my code? 

<?php

if(! defined('WPINC') ){
  die;
}

class WP_Security_Headers{

  public function init(){
    add_action('send_headers', array($this, 'set_http_headers'));
  }

  private function set_http_headers(){
    header("Strict-Transport-Security: max-age=31536000; includeSubDomains");
    header("Set-Cookie: HttpOnly;Secure");
    header("Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-inline' ; img-src 'self' data:; style-src 'self' 'unsafe-inline' ; font-src 'self' data:; object-src 'none'; frame-src ; ");
    header("X-Frame-Options: SAMEORIGIN");
    header("X-Xss-Protection: 1; mode=block");
    header("X-Content-Type-Options: nosniff");
    header("Referrer-Policy: strict-origin");
    header("X-Pingback: ");
    header("X-Powered-By: ");
  }

}

$wp_s = new WP_Security_Headers;
$wp_s->init();

?>

I have written a simple plugin to send some security http headers. I've tested it on various wordpress installations but on a wordpress multisite network it seems that the headers are not sended. The plugin is active for the entire network and in the .htaccess file there is no instruction to set the headers. Is there any error with my code? 

<?php

if(! defined('WPINC') ){
  die;
}

class WP_Security_Headers{

  public function init(){
    add_action('send_headers', array($this, 'set_http_headers'));
  }

  private function set_http_headers(){
    header("Strict-Transport-Security: max-age=31536000; includeSubDomains");
    header("Set-Cookie: HttpOnly;Secure");
    header("Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-inline' ; img-src 'self' data:; style-src 'self' 'unsafe-inline' ; font-src 'self' data:; object-src 'none'; frame-src ; ");
    header("X-Frame-Options: SAMEORIGIN");
    header("X-Xss-Protection: 1; mode=block");
    header("X-Content-Type-Options: nosniff");
    header("Referrer-Policy: strict-origin");
    header("X-Pingback: ");
    header("X-Powered-By: ");
  }

}

$wp_s = new WP_Security_Headers;
$wp_s->init();

?>

本文标签： pluginssendheaders don39t work on wordpress multisite

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