Simple chat for LAN using UDP (not finished)

udp_chat.py

import socket
import threading

addr = socket.gethostbyname(socket.gethostname())
port = 22000
srv_addr = (addr, port)

broadcast_addr = ".".join(addr.split('.')[:-1]) + '.255'
nport = 22001
n_srv_addr = (broadcast_addr, port)

peers = {}


def announce(sock):
    print("Как тебя зовут? ", end="")
    name = input()
    while " " in name:
        print("Имя должно быть без пробелов")
        print("Как тебя зовут? ", end="")
        name = input()

    sock.sendto(name.encode(), n_srv_addr)


def name_daemon(sock):
    def gather():
        while True:
            data, peer_addr = sock.recvfrom(4096)
            name = data.decode()
            if name in peers and peers[name] == peer_addr:
                print("кто-то пытается выдать себя за", name)
                continue
            peers[name] = peer_addr
            print("В чат зашёл {} с адреса {}:{}".format(
                name, peer_addr[0], peer_addr[1]))

    return gather


def receiver(sock):
    def recv():
        while True:
            data, peer_addr = sock.recvfrom(4096)
            if peer_addr not in peers.values():
                name = "аноним"
            else:
                name = list(peers.keys())[list(
                    peers.values()).index(peer_addr)]
            print("{} > {}".format(name, data.decode()))

    return recv


def send(sock):
    while True:
        try:
            msg = input()
        except EOFError:
            print('\n')
            break

        if len(msg) == 0:
            continue
        msg_split = msg.split()
        name = msg_split[0]
        if name not in peers:
            print("Нет такого абонента")
            continue
        sock.sendto(" ".join(msg_split[1:]).encode(), peers[name])


def main():
    sock = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM)
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    sock.bind(srv_addr)

    nsock = socket.socket(family=socket.AF_INET, type=socket.SOCK_DGRAM)
    nsock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    nsock.bind(n_srv_addr)

    name_thread = threading.Thread(target=name_daemon(nsock))
    name_thread.start()

    announce(nsock)

    recv_thread = threading.Thread(target=receiver(sock))
    recv_thread.start()

    send(sock)


if __name__ == '__main__':
    main()