python - 在不同的计算机系统中使用python进行TCP套接字编程

Question

我正在尝试在不同的系统(系统 A=windows7(python2.7)和系统 B=windows10(python 3.6))中使用 Python 运行 TCP 客户端和服务器套接字程序。服务器程序在系统 B 中运行，但是当客户端在系统 A 中执行时，它(客户端 prg)在几秒钟后终止，显示消息:

ERROR 10060::connection failed because connected party didn't properly respond after a period of time or established connection failed because connected host has failed to response

小写到大写的 CLIENT 程序

from socket import *
import socket
clientSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
clientSocket.connect(('192.168.43.130',9067))
sentence = input('Input lowercase sentence:')
clientSocket.send(sentence.encode())
modifiedSentence = clientSocket.recv(1024).decode()
print ('From Server:', modifiedSentence)
clientSocket.close()

SERVER PROGRAM 小写到大写

from socket import *
import socket
serverSocket = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
serverSocket.bind(('',9067))
serverSocket.listen(1)
print ('The server is ready to receive')
while 1:
    connectionSocket,  addr = serverSocket.accept()
    sentence = connectionSocket.recv(1024).decode()
    print("String from client-->",sentence)
    capitalizedSentence = sentence.upper()
    print("String in server-->",capitalizedSentence)
    connectionSocket.send(capitalizedSentence.encode())
    print("-------------------------")
    connectionSocket.close()

Answer 1

TCP 是一种流协议(protocol)，您不能假设您从接收端获得了以相同“ block ”发送的字节。您需要决定一个框架解决方案。通常使用的方法是使用约定的终止字符(例如\0 或换行符)或首先发送消息的长度，然后发送消息有效负载的字节数。