Request Headers (scheme)

[JohnnyCoffee]

I'm doing tests to structure an http server, initially I use a socket to plug it in (client.side X server.side) this I do without problems, see the code below:

from http.server import BaseHTTPRequestHandler, HTTPServer, socketserver
from http import HTTPStatus
from urllib.parse import urlparse
import sys


class MyServer(BaseHTTPRequestHandler):

    # class attributes
    __version__ = "1.0"
    sys_version = "Python/" + sys.version.split()[0]
    server_version = "Servone/" + __version__

    """
    The request handler class for our server.
    It is instantiated once per connection to the server, and must
    override the handle() method to implement communication to the
    client.
    """

    def do_HEAD(self):

        # instance attributes
        # c_scheme = urlparse(self.scheme)
        # v_path = c_path.path
        # print(c_scheme)

        self.send_response(HTTPStatus.OK.value, HTTPStatus.OK.phrase)
        self.send_header("Content-type","text/html; charset=utf-8")
        self.end_headers()

    def do_GET(self):

        self.do_HEAD()
        o_file = open("index.html", "r")
        s_file = o_file.read()
        self.request.sendall(s_file.encode("utf-8"))

if __name__ == "__main__":
    HOST, PORT = "localhost", 8080

    # Create the server, binding to localhost on port 8080
    with socketserver.TCPServer((HOST, PORT), MyServer) as server:
        print("Activate the server; this will keep running until you")
        print("interrupt the program with Ctrl-C")
        server.serve_forever()

The doubt I have is related to the request header because when I run the code above I notice that there are some components (scheme) of the request header (client.side) that do not appear in the developer tools in the network tab in headers in (browser). I did some tests accessing sites and the component (scheme) appears in the request headers as shown in the example below:

:scheme: http or https