dgram-broadcast

A more obvious dgram broadcast.

dgram-broadcast has the correct defaults to just work for broadcast on your local area network.

Example

Broadcast on port 8999 on your local area network.

const createStream = require('dgram-broadcast')

const stream = createStream(8999)

stream.on('data', (msg) => {
  console.log(msg.toString())
  console.log(msg.address, msg.port, msg.echo)
})

setInterval(() => {
  stream.write(Buffer.from(new Date().toString(), 'utf8'))
}, 1000)

API

stream = createStream(port, loopback=true, dest=['255.255.255.255'])

Stream on the port port. If loopbackis false, do not output your own messages. Returns a Node.js stream.destis an array of all the destination addresses on which to broadcast, by default it has only255.255.255.255` as the destination.

stream.on('data', (msg) => { ... })

msg is the message as a buffer, it also has msg.address and msg.port set to the address and port that originated the message. If msg is a message that this stream sent, it will also have msg.loopback = true.

Back-pressure

UDP does not have back-pressure, but the stream API in this module does. If the stream is paused, it will just drop messages. If when the stream is resumed, it will emit the latest message.

License

MIT