diff --git a/squinnondation/squinnondation.py b/squinnondation/squinnondation.py
index 1b350a4..a5135c3 100644
--- a/squinnondation/squinnondation.py
+++ b/squinnondation/squinnondation.py
@@ -1,5 +1,6 @@
 # Copyright (C) 2020 by eichhornchen, ÿnérant
 # SPDX-License-Identifier: GPL-3.0-or-later
+
 import socket
 from argparse import ArgumentParser
 from typing import Any
@@ -39,14 +40,47 @@ class Squinnondation:
         instance = Squinnondation()
         instance.parse_arguments()
 
-        sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-        sock.bind((instance.bind_address, instance.bind_port))
+        squirrel = Squirrel(input("Enter your nickname: "), instance.bind_address, instance.bind_port)
 
         if not instance.args.bind_only:
-            sock.sendto(b"Hello world!", (instance.client_address, instance.client_port))
+            hazelnut = Hazelnut(address=instance.client_address, port=instance.client_port)
+            squirrel.send_raw_data(hazelnut, b"Hello world!")
 
-        print(f"Listening on {instance.bind_address}:{instance.bind_port}...")
         while True:
-            data, addr = sock.recvfrom(1024)  # buffer size is 1024 bytes
+            data, addr = squirrel.receive_raw_data()
             print("received message: %s" % data)
-            sock.sendto(b"Hello squirrel!", addr)
+            # squirrel.send_raw_data(hazelnut, b"Hello squirrel!")
+
+
+class Hazelnut:
+    """
+    A hazelnut is a connected client, with its socket.
+    """
+    def __init__(self, nickname: str = "anonymous", address: str = "localhost", port: int = 2500):
+        self.nickname = nickname
+        self.address = address
+        self.port = port
+
+
+class Squirrel(Hazelnut):
+    """
+    The squirrel is the user of the program. It can speak with other clients, that are called hazelnuts.
+    """
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        self.socket.bind((self.address, self.port))
+        print(f"Listening on {self.address}:{self.port}")
+
+    def send_raw_data(self, client: Hazelnut, data: bytes) -> int:
+        """
+        Send a raw packet to a client.
+        """
+        return self.socket.sendto(data, (client.address, client.port))
+
+    def receive_raw_data(self) -> tuple[bytes, any]:
+        """
+        Receive a packet from the socket.
+        TODO: Translate the address into the correct hazelnut.
+        """
+        return self.socket.recvfrom(1024)