1HTTP/1.1 400 Bad Request 2Content-Type: text/html 3Content-Length: 224 4Server: bozohttpd/20181118 5Allow: GET, HEAD, POST 6 7<html><head><title>400 Bad Request</title></head> 8<body><h1>400 Bad Request</h1> 9/: <pre>The request was not valid</pre> 10<hr><address><a href="//space-bird.eterna23.net/">space-bird.eterna23.net</a></address> 11</body></html> 12