POST /test.php HTTP/1.1 Host: localhost Connection: keep-alive Content-Length: 7 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 Origin: http://192.168.178.21 Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/5.0 (Linux; Android 11; SAMSUNG SM-A217F) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/16.2 Chrome/92.0.4515.166 Mobile Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Referer: http://127.0.0.1/test.php Accept-Encoding: gzip, deflate Accept-Language: de-DE,de;q=0.9,en-US;q=0.8,en;q=0.7 q=Hallo