How do we run http

Question

I have seen so many http codes online and I have been taught some of the uses but I still dont get it...save as which type, compiler or interpreter, etc
Please help

Answer 1

Well I see codes and variable...
What are they

Answer 2

Host: localhost:3001
Accept: text/html
Accept-Language: en-US,en;q=0.5
Connection: keep-alive
Content-Type: multipart/form-data; boundary=-1233445
Content-Length: 354

Answer 3

That is the code
It is in a tutorial here

Answer 4

Damn the title