fib server

fib.py

def fib(n):
    if n <= 2:
        return 1
    else:
        return fib(n-1) + fib(n-2)

fib_server.py

from socket import *
from fib import fib

def fib_server(address):
    sock = socket(AF_INET, SOCK_STREAM)
    # sock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) # ???
    sock.bind(address)
    sock.listen(5)
    while True:
        client, addr = sock.accept()
        print("- fib_server")
        print("  accept connection from address : {}".format(addr))
        fib_handler(client)

def fib_handler(client):
    while True:
        req = client.recv(100)
        if not req:
            break
        n = int(req)
        result = fib(n)
        resp = (str(result) + '\n').encode('utf-8')
        client.send(resp)
    print("- fib_handler")
    print("  close")

fib_server(('', 25000))

nc.py

from socket import *

def nc():
    sock = socket(AF_INET, SOCK_STREAM)
    sock.connect(('localhost', 25000))
    while True:
        n = input()
        sock.send(n.encode('utf-8'))
        resp = sock.recv(100)
        print(resp.decode('utf-8'), end='')

nc()