## 首先啟動服務端

### 服務端

"""
該指令碼建立一個TCP伺服器，接受客戶端資訊，返回加了時間綴的資訊
"""
from socket import *
from time import ctime

HOST = ''
PORT = 21567
BUFSIZ = 1024
ADDR = (HOST, PORT)

tcpSerSock = socket(AF_INET, SOCK_STREAM)
tcpSerSock.bind(ADDR)
tcpSerSock.listen(5)

while True:
    print("waiting for connection......")
    tcpCliSock, addr = tcpSerSock.accept()
    print("......connected from:", addr)

    while True:
        data = tcpCliSock.recv(BUFSIZ)
        if not data:
            break
        data = ('[%s] %s' % (bytes(ctime(), 'utf-8'), data)).encode()
        tcpCliSock.send(data)
        print(data)

    tcpCliSock.close()

tcpSerSock.close()

### 客戶端

"""
建立一個TCP客戶端
"""
from socket import *

HOST = "127.0.0.1"
PORT = 21567
BUFSIZ = 1024
ADDR = (HOST, PORT)

tcpCliSock = socket(AF_INET, SOCK_STREAM)
tcpCliSock.connect(ADDR)

while True:
    data = input('> ')
    if not data:
        break
    tcpCliSock.send(data.encode())
    data = tcpCliSock.recv(BUFSIZ)
    if not data:
        break
    print(data.decode('utf-8'))

tcpCliSock.close()