Python TCP通信客户端服务端代码实例

import argparse, socket,sysimport 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 dataif __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,sysdef 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 dataif __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()