Send Broadcast datagram

Question

I need to send a broadcast datagram to all machine (servers) connected to my network.

I\'m using NodeJS Multicast

Client

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Answer 1

I never used Node.js, but I do recall that with Berkely sockets (which seem to be the most widely used implementation of sockets) you need to enable the SO_BROADCAST socket option to be able to send datagrams to the broadcast address. Looking up the dgram documentation, there seems to be a function for it.

var client = dgram.createSocket("udp4");
client.setBroadcast(true);
client.send(message, 0, message.length, 41234, "192.168.0.255");

You might want to find out the broadcast address programmatically, but I can't help you with that.