GET http://localhost:8000/hello
HTTP/1.0 200```Hello World!```
GET http://localhost:8000/hello
HTTP/1.0 200file, data.txt;
GET http://localhost:8000/hello
HTTP/1.0 200hex, 48656c6c6f20576f726c6421;
GET http://localhost:8000/hello
HTTP/1.0 200base64, SGVsbG8gV29ybGQh;