Question

我有来自文档的代码：

#!/usr/bin/env python

import socket

TCP_IP = '192.168.1.66'
TCP_PORT = 40000
BUFFER_SIZE = 20  # Normally 1024, but we want fast response

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind((TCP_IP, TCP_PORT))
s.listen(1)

conn, addr = s.accept()

print 'Connection address:', addr

while True:
    data = conn.recv(BUFFER_SIZE)
    if not data: break
    print "received data:", data
    conn.send(data)

conn.close()

但是每次断开连接都会关闭，如何让它永远运行？

Answer 1

尝试并更改行

if not data: break

到

if not data: continue

这种方式不是退出循环，而是等待更多数据

Answer 2

您需要为每个要处理的连接拨打accept()一次。到第一个近似值：

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind((TCP_IP, TCP_PORT))
s.listen(1)

while True:    
    conn, addr = s.accept()

    print 'Connection address:', addr

    while True:
        data = conn.recv(BUFFER_SIZE)
        if not data: break
        print "received data:", data
        conn.send(data)

    conn.close()

如何让我的TCP服务器永远运行？

2 个答案: