from socket import *

host = '192.168.48.128'
port = 13141
addr = (host,port)
bufsize=1024

tcpClient = socket(AF_INET,SOCK_STREAM) # 這里的參數(shù)和UDP不一樣。
tcpClient.connect(addr) #由于tcp三次握手機制，需要先連接

while True:
  data = input('>>> ').encode(encoding="utf-8")
  if not data:
    break
  # 數(shù)據(jù)收發(fā)和UDP基本一致
  tcpClient.send(data) 
  data = tcpClient.recv(bufsize).decode(encoding="utf-8") 
  print(data)

tcpClient.close()

from socket import *
from time import ctime
import os 

host = ''
port = 13140
bufsize = 1024
addr = (host,port)

tcpServer = socket(AF_INET,SOCK_STREAM)
tcpServer.bind(addr)
tcpServer.listen(5) #這里設(shè)置監(jiān)聽數(shù)為5(默認值),有點類似多線程。

while True:
  print('Waiting for connection...')
  tcpClient,addr = tcpServer.accept() #拿到5個中一個監(jiān)聽的tcp對象和地址
  print('[+]...connected from:',addr)

  while True:
    cmd = tcpClient.recv(bufsize).decode(encoding="utf-8") 
    print('  [-]cmd:',cmd)
    if not cmd:
      break
    ###這里在cmd中執(zhí)行來自客戶端的命令，并且將結(jié)果返回###
    cmd = os.popen(cmd) ###os.popen(cmd)對象是file對象子類，所以可以file的方法
    cmdResult = cmd.read()
    cmdStatus = cmd.close()
    #################################################
    data = cmdResult if (not cmdStatus) else "ERROR COMMAND"
    tcpClient.send(data.encode(encoding="utf-8"))

  tcpClient.close() #
  print(addr,'End')
tcpServer.close() #兩次關(guān)閉，第一次是tcp對象，第二次是tcp服務(wù)器