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Source View: http_headers_useragent

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Line Code
6842                return $this->pingback_error( 48, __( 'The pingback has already been registered.' ) );
6843           }
6844
6845           // very stupid, but gives time to the 'from' server to publish !
6846           sleep( 1 );
6847
6848           $remote_ip = preg_replace( '/[^0-9a-fA-F:., ]/', '', $_SERVER['REMOTE_ADDR'] );
6849
6850           /** This filter is documented in wp-includes/class-http.php */
6851           $user_agent = apply_filters( 'http_headers_useragent', 'WordPress/' . get_bloginfo( 'version' ) . '; ' . get_bloginfo( 'url' ), $url );
6852
6853           // Let's check the remote site
6854           $http_api_args = array(
6855                'timeout'             => 10,
6856                'redirection'         => 0,
6857                'limit_response_size' => 153600, // 150 KB
6858                'user-agent'          => "$user_agent; verifying pingback from $remote_ip",
6859                'headers'             => array(
6860                     'X-Pingback-Forwarded-For' => $remote_ip,