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python - Is there a way to send two messages with socket

问题描述

Im trying to send a messages from the server to the client

I tried deleting the .close and puting a while loop on print but it still doesn't won't to work

Client

import socket 

s = socket.socket()            
host = socket.gethostname()
port = 12345  

s.connect((host, port))
while True:
    print (s.recv(1024))

Server

import socket               

s = socket.socket()  
host = socket.gethostname()
port = 12345     

s.bind((host, port))
s.listen(5)
while True:
    c, addr = s.accept()
    print ('Got connection from', addr)
    x = str(input("ënter a message"))

    data = x.encode()
    c.send(data)

I expect the output to be 2 messages from the server but it is only sending 1 and then closing the connection

标签： python

解决方案

切换你的accept和while True:线。接受连接后，继续在同一连接上发送。

请注意，TCP 是一种流式传输协议。没有“消息”的概念，只是一堆字节。如果您发送的速度足够快，例如：

c.send(b'abc')
c.send(b'def')

然后recv(1024)可以收到b'abcdef'。对于更复杂的通信，你必须定义一个协议和缓冲区recv，直到你确定你有一个完整的消息。在这种情况下，一种简单的方法是读取直到找到换行符，或者在发送实际消息之前发送一个字节（或更多）来指示总消息的大小。

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