trying to send HTTP response from low level socket server

This is my code:

# Process connections

print('Listening on port', port)
while True:
    c, addr = s.accept()
    print("Got connection from", addr)
    msg = "<html></html>"

    response_headers = {
        'Content-Type': 'text/html; encoding=utf8',
        'Content-Length': len(msg.encode(encoding="utf-8")),
        'Connection': 'close',
    }

    response_headers_raw = ''.join('%s: %s\n' % (k, v) for k, v in response_headers.items())

    response_proto = 'HTTP/1.1'
    response_status = '200'
    response_status_text = 'OK' # this can be random

    # sending all this stuff
    r = '%s %s %s' % (response_proto, response_status, response_status_text)
    c.send(r.encode(encoding="utf-8"))
    c.send(response_headers_raw.encode(encoding="utf-8"))
    c.send('\n'.encode(encoding="utf-8")) # to separate headers from body
    c.send(msg.encode(encoding="utf-8"))

    c.close()

When I visit my local ip on the browser, I get an error page that says

ERR_CONNECTION_RESET

What am I doing wrong?

NOTE:

The full code snippet is here:

import socket

# Create socket object and set protocol
s = socket.socket(
    socket.AF_INET, socket.SOCK_STREAM)

# Get name of local machine
host = socket.gethostname()
port = 80

# Bind
s.bind((host, port))

# Listen and set backlog (?)
s.listen(5)

# Process connections
print('Listening on port', port)
while True:
    c, addr = s.accept()
    print("Got connection from", addr)
    msg = "<html></html>"

    response_headers = {
        'Content-Type': 'text/html; encoding=utf8',
        'Content-Length': len(msg.encode(encoding="utf-8")),
        'Connection': 'close',
    }

    response_headers_raw = ''.join('%s: %s\n' % (k, v) for k, v in response_headers.items())

    response_proto = 'HTTP/1.1'
    response_status = '200'
    response_status_text = 'OK' # this can be random

    # sending all this stuff
    r = '%s %s %s' % (response_proto, response_status, response_status_text)
    c.send(r.encode(encoding="utf-8"))
    c.send(response_headers_raw.encode(encoding="utf-8"))
    c.send('\n'.encode(encoding="utf-8")) # to separate headers from body
    c.send(msg.encode(encoding="utf-8"))

    c.close()