What permission is needed for udp in a chrome app? - sockets

Question

What permission is needed for udp in a chrome app?
I get the error:
Unchecked runtime.lastError while running sockets.udp.bind: App does not have permission
but I can't find the permission needed.
My manifest.json file looks like this:
{
"name": "XX",
"description": "XX",
"version": "0.0.1",
"manifest_version": 2,
"app": {
"background": {
"scripts": ["main.js"]
}
},
"icons": {
"16": "icon-16.png",
"128": "icon-128.png"
},
"sockets": {
"udp": {
"send": "*"
}
},
"permissions": [
"fullscreen", "alwaysOnTopWindows", "videoCapture", "storage", "browser"
]
}

Answer 1

you need to ask for the bind permission
"udp": {
"send": ["*"],
"bind": ["*"]
}

Answer 2

Using UDP
Chrome Apps can make connections to any service that supports UDP.
Sending data
Here's a sample showing how to send data (sockets.udp.send) over the network using UDP:
// Create the Socket
chrome.sockets.udp.create({}, function(socketInfo) {
// The socket is created, now we can send some data
var socketId = socketInfo.socketId;
chrome.sockets.udp.send(socketId, arrayBuffer,
'127.0.0.1', 1337, function(sendInfo) {
console.log("sent " + sendInfo.bytesSent);
});
});
Receiving data
This example is very similar to the 'Sending data' example, except we setup an event handler for receiving data.
var socketId;
// Handle the "onReceive" event.
var onReceive = function(info) {
if (info.socketId !== socketId)
return;
console.log(info.data);
};
// Create the Socket
chrome.sockets.udp.create({}, function(socketInfo) {
socketId = socketInfo.socketId;
// Setup event handler and bind socket.
chrome.sockets.udp.onReceive.addListener(onReceive);
chrome.sockets.udp.bind(socketId,
"0.0.0.0", 0, function(result) {
if (result < 0) {
console.log("Error binding socket.");
return;
}
chrome.sockets.udp.send(socketId, arrayBuffer,
'127.0.0.1', 1337, function(sendInfo) {
console.log("sent " + sendInfo.bytesSent);
});
});
});
for more info: look here