Python TCP通信客户端服务端代码实例

import argparse, socket,sys
import time
# socket.setdefaulttimeout(20)

def recvall(sock, length):
  data = b''
  while len(data) < length:
    more = sock.recv(length - len(data))
    if not more:
      raise EOFError('总共有%dbytes，但只收到了%dbytes' % (length, len(data)))
    data += more
  return data
if __name__ == '__main__':
  sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  sock.connect(('192.168.137.1', 10000))
  print('客户的分配了socket：', sock.getsockname())
  i=0
  for x in range(4):
   # try:
     text = '我是客户端你是服务器嚯嚯嚯！'.encode('utf-8')
     i=i+len(text)
     sock.sendall(text)
     sys.stdout.flush()
     print("已发送：",i)
   # except ConnectionResetError:
   #   pass
  sock.shutdown(socket.SHUT_WR)
  num = 0
  while True:
    reply = sock.recv(48) # b'Farewell, client'的长度
    num += len(reply)
    print('接收：',num)
    if not reply:
      print("ok")
      break

    # print('服务器返回：', reply.decode('utf-8'))
  print("理论上应该关闭sock")
  sock.close()
time.sleep(1)

import argparse, socket,sys

def recvall(sock, length):
  data = b''
  while len(data) < length:
    more = sock.recv(length - len(data))
    if not more:
      raise EOFError('总共有%dbytes，但只收到了%dbytes' % (length, len(data)))
    data += more
  return data
if __name__ == '__main__':
  sc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  sc.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  sc.bind(('', 10000))
  sc.listen()
  print('正在侦听{}...'.format(sc.getsockname()))
  num = 0
  while True:
    scc, address = sc.accept()
    print('连接来自：', address)
    print('socket名字：', scc.getsockname())
    print('socket peer：', scc.getpeername())
    while True:
      message = scc.recv(42)#recvall(scc, 24) # 尝试 12,,20，28会是什么结果
      if not message:
        break
      # print('收到16-octet消息：', repr(message))
      print('收到16-octet消息：', (message.decode('utf-8')))
      scc.sendall(message)
      sys.stdout.flush()
      num += len(message)
      print("已发送：",num)

    scc.close()
    print('应答发送，socket关闭')
  sc.close()