Communicate between two Chrome apps or extensions
Both of the apps should do this:
var c = new comms(appId1, appId2, function(state, reason) {
console.log("State of connection changed", state, reason);
});
To add a listener for messages from the other app or extension on a specific channel name.
Note the second argument is a function to which you can respond straight away. This will call the response callback of the message sender, if there is one.
c.addListener("channelName", function(message, respond) {
console.log("Message on channelName", message);
respond({ "data": "This is my response" });
});
Send a message on a specific channel with an object of data.
The third argument, the callback, is what is called when the listener calls the respond function. Note you also have a respond function - this can keep going backwards and forwards as much as you like.
c.send("channelName", { "data": "here" }, function(message, respond) {
console.log("Response received", message);
respond({ "respond": "again" });
});