Browser connect to raw sockets even possible?

Question

We're given this assignment to make a tic-tac-toe game with server-client architecture. My professor wants the server to be built using raw sockets (even lower than TCP/UDP) and client side to be browser. Is that even possible? Assignment Spec

I know in the assignment spec it said TCP/IP but I asked my professor later on and she said raw as in lower. This an example of server using TCP she gave (which she doesn't want us to use):

# Import the required libraries
from socket import *

# Listening port for the server
serverPort = 12000

# Create the server socket object
serverSocket = socket(AF_INET,SOCK_STREAM)

# Bind the server socket to the port
serverSocket.bind(('',serverPort))

# Start listening for new connections
serverSocket.listen(1)


# For python 2.x use the following syntax for displaying strings:
print 'The server is ready to receive messages'

# For python 3.x use the following syntax for displaying strings:
#print('The server is ready to receive messages')


while 1:
        # Accept a connection from a client
    connectionSocket, addr = serverSocket.accept()

        ## Retrieve the message sent by the client

        # For python 2.x use the following (no need to convert from byte string to unicode):
        sentence = connectionSocket.recv(1024)

        # For python 3.x use the following
        # (explicit conversion from byte string to unicode using .encode() method):
    #sentence = connectionSocket.decode().recv(1024)
    
        #Modify the message
    capitalizedSentence = sentence.upper()

        ## Send the modified message back to the client
    
        # For python 2.x use the following (no need to convert from unicode to byte string):
        connectionSocket.send(capitalizedSentence)

        # For python 3.x use the following
        # (explicit conversion from unicode to byte string using .encode() method):
    #connectionSocket.send(capitalizedSentence.encode())

        # Close the connection
    connectionSocket.close()

So she wants us to go even lower than this.

So back to my question, is this possible? I have done some research and seem to find that browsers can't communicate with raw sockets. But she said she has done it, so I don't know at this point.