向 python 服务器添加超时时出现非阻塞错误

我正在用 python 编写一个简单的 TCP 服务器，并尝试输入超时。我当前的代码：

import socket


def connect():
    HOST = ''                 # Symbolic name meaning the local host
    PORT = 5007             # Arbitrary non-privileged port
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.bind((HOST, PORT))
    s.listen(1)
    s.settimeout(5)
    conn, addr = s.accept()
    print 'Connected by', addr
    return conn

conn = connect()

while 1:
    data = conn.recv(1024)
    if not data: break
    print data
conn.close()

问题是当我尝试连接时，我在 data = conn.recv(1024) 处收到错误

error: [Errno 10035] A non-blocking socket operation could not be completed immediately

代码可以在没有超时的情况下运行。

尝试设置套接字的超时和连接的阻塞。像这样：

import socket 

def connect():
    HOST = ''                 # Symbolic name meaning the local host
    PORT = 5007             # Arbitrary non-privileged port
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.settimeout(5)
    s.bind((HOST, PORT))
    s.listen(1)  
    return s

s = connect()

while 1:
    conn, addr = s.accept()
    print 'Connected by', addr
    conn.setblocking(1)
    data = conn.recv(1024)
    conn.close()
    if not data: break
    print data
s.close()