#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2019/1/14 0:35
# @Author  : ChenAdong
# @email   : [email protected]
import socket


def download():
   server_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

   # 客戶端端繫結埠
   server_sock.bind(("", 8081))

   # 客戶端連線伺服器
   server_sock.connect(("127.0.0.1", 8080))

   data = server_sock.recv(1024)
   with open("test.txt", "wb") as f:
      f.write(data)


if __name__ == "__main__":
   download()

上面例子是隻要連線到伺服器，伺服器就會自動傳送資料；
正常的使用場景是，先發送檔名稱，然後伺服器開始傳送檔案；