How to send broadcast IP address to network?

[lightaiyee]

I want to send a broadcast packet to all the computers connected to my home router.

The following 2 lines of code do not work;
host="192.168.0.102"
s.connect((host, port))

Can someone advise?

Thank you.

 

[lightaiyee]

Some typo mistake.
Should be host="192.168.0.255", not "192.168.0.102"

 

[Neil Cerutti]

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 's' is not defined

I bet that's not the same traceback you get. Furthermore, port
isn't defined either.

 

[Chris Angelico]

I want to send a broadcast packet to all the computers connected to my home router.

The following 2 lines of code do not work;
host="192.168.0.102"
s.connect((host, port))

Can someone advise?

You can't establish a TCP socket with a broadcast address. That just
doesn't work. Can you please show a whole lot more context so we can
see what's happening here? Thanks!

ChrisA

 

[Irmen de Jong]

I want to send a broadcast packet to all the computers connected to my home router.

The following 2 lines of code do not work;
host="192.168.0.102"
s.connect((host, port))

Can someone advise?

Thank you.

Use UDP (datagram) sockets. Use sendto() and not connect(), because UDP is
connectionless. This should work:

import socket
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
sock.sendto(b"thedata", 0, ("<broadcast>", 9999)) # 9999 = port
sock.close()


Irmen