本文介绍了在 Python 中接收广播数据包的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有以下代码发送一个在子网中广播的 udp 数据包.
I have the following code which sends a udp packet that is broadcasted in the subnet.
from socket import *
s=socket(AF_INET, SOCK_DGRAM)
s.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)
s.sendto('this is testing',('255.255.255.255',12345))
以下代码用于接收广播包.
The following code is for receiving the broadcast packet.
from socket import *
s=socket(AF_INET, SOCK_DGRAM)
s.bind(('172.30.102.141',12345))
m=s.recvfrom(1024)
print m[0]
问题是它没有收到任何广播数据包.但是，它成功地接收到发送到该端口的正常 udp 数据包.
The problem is that its not receiving any broadcast packet. However, it is successfully receiving normal udp packets sent to that port.
我的机器显然正在接收广播数据包，我使用 netcat 对其进行了测试.
My machine was obviously receiving the broadcast packet, which I tested using netcat.
$ netcat -lu -p 12345
this is testing^C
那么，问题究竟出在哪里?
So, where exactly is the problem?
推荐答案
尝试绑定到默认地址:
s.bind(('',12345))
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