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re-implemented personal mDNS responses

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tigerbot 2017-06-16 13:21:20 -06:00
parent 72ff8ebf15
commit 0a0f06094e
1 changed files with 11 additions and 8 deletions
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19
lib/mdns.js
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@ -137,15 +137,13 @@ module.exports.start = function (deps, config, mainPort) {
randomId.get().then(function (name) {
var resp = createResponse(name, packet, config.mdns.ttl, mainPort);
// TODO: uncomment the lines below after the demo and fix the installer so that
// it can get the direct responses even on macOS.
// var now = Date.now();
// if (now > nextBroadcast) {
var now = Date.now();
if (now > nextBroadcast) {
socket.send(resp, config.mdns.port, config.mdns.broadcast);
// nextBroadcast = now + config.mdns.ttl * 1000;
// } else {
// socket.send(resp, rinfo.port, rinfo.address);
// }
nextBroadcast = now + config.mdns.ttl * 1000;
} else {
socket.send(resp, rinfo.port, rinfo.address);
}
});
});
@ -155,5 +153,10 @@ module.exports.start = function (deps, config, mainPort) {
socket.setBroadcast(true);
socket.addMembership(config.mdns.broadcast);
// This is supposed to be a local device discovery mechanism, so we shouldn't
// need to hop through any gateways. This helps with security by making it
// much more difficult for someone to use us as part of a DDoS attack by
// spoofing the UDP address a request came from.
socket.setTTL(1);
});
};