Question

我在端口5555上运行了一个echo服务器，它接收并完美地返回数据，但它不会正确关闭。当我输入退出命令时，它只是保持打印空白输出。有人可以帮忙，谢谢。

Keeps printing received data (which is empty)

Server_side代码

import socket as sk
server_socket = sk.socket(sk.AF_INET, sk.SOCK_STREAM)
server_socket.setsockopt(sk.SOL_SOCKET, sk.SO_REUSEADDR, 1)
server_socket.bind(("localhost", 5555))
server_socket.listen(1)
connection, client_address = server_socket.accept()
while True:
   data_in = connection.recv(1024)
   message = data_in.decode()
   message.strip()
   if message == "quit" or message == "QUIT":
       break
   print("" , message)
   data_out = message.encode()
   connection.send(data_out)
connection.shutdown(sk.SHUT_RDWR)
connection.close()
server_socket.shutdown(sk.SHUT_RDWR)
server_socket.close()

Client_side代码

import socket as sk
client_socket = sk.socket(sk.AF_INET, sk.SOCK_STREAM)
client_socket.connect(('localhost', 5555))
while True:
  #input message
  message = input("Enter message to send or type quit to quit: ")

  #check if user wants to quit
  if message == "quit" or message == "QUIT":
      break

  #encode the user input and send it to the server
  client_socket.send(message.encode())

  #save the data sent by the server
  recmess = client_socket.recv(1024)

  #print the server reply
  print("Server: ", recmess.decode())
  print()

#print student details
print("Connection Closed")

client_socket.shutdown(sk.SHUT_RDWR)
client_socket.close()

Answer 1

当您在发送消息之前突破客户端的while循环（在退出输入的情况下）时，服务器永远不会收到关闭命令。这意味着客户端将在关闭服务器的同时关闭。

解决此问题的一个选项是切换邮件发送到服务器的顺序（发送，然后检查以关闭客户端）

client_socket.send(message.encode())

if message.lower() == 'quit':
    break

希望这会有所帮助

Linux Python服务器无法正常终止

1 个答案: