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@@ -1,221 +0,0 @@
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-var exec = cordova.require('cordova/exec');
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-
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-var MULTICAST_HOST = "224.0.0.236";
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-var MULTICAST_PORT = 60540;
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-
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-module.exports = function(options) {
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-
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- var instanceId = guid();
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-
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- var exports = {};
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- var serviceInfos = {};
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- var events = {};
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-
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- var options = options || {};
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- var host = options.host || MULTICAST_HOST;
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- var port = options.port || MULTICAST_PORT;
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-
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- // Services is a map (service.host+":"+service.port+":"+service.name) => Object serviceInfo
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- // where serviceInfo is an object like
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- // { isOurService : Boolean, service: Object }
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-
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- // =====
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- // Set up UDP Multicast connection
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- // =====
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-
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- function initCallbackSuccess() {
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- queryForServices();
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- }
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- function initCallbackFail(err) {
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- // ...
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- }
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- exec(initCallbackSuccess, initCallbackFail, 'Diont', 'init', [ instanceId, host, port ]);
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-
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-
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- function messageCallback(message) {
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- try {
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- var messageObject = JSON.parse(message);
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- var eventType = messageObject.eventType;
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- var fromDiontId = messageObject.fromDiontInstance;
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- if (fromDiontId == instanceId) {
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- return;
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- }
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- if (eventType == "query") {
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- var serviceInfosToAnnounce = [];
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- for(var index in serviceInfos) {
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- serviceInfosToAnnounce.push(serviceInfos[index]);
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- }
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- sendAnnouncement(serviceInfosToAnnounce);
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- } else {
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- var receivedServiceInfos = messageObject.serviceInfos;
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- for(var serviceInfoIndex in receivedServiceInfos) {
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- var serviceInfo = receivedServiceInfos[serviceInfoIndex];
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- if(!serviceInfo.service) {
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- continue;
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- }
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- var service = serviceInfo.service;
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- if (!service.host || !service.port || !service.name) {
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- continue;
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- }
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- if (eventType == "announce") {
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- var id = service.host + ":" + service.port + ":" + service.name;
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- if(!serviceInfos[id]) {
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- var serviceInfo = serviceInfos[id] = {
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- isOurService: false,
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- service: service
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- }
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- if (events["serviceAnnounced"]) {
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- for(var callbackId in events["serviceAnnounced"]) {
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- var callback = events["serviceAnnounced"][callbackId];
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- callback(serviceInfo);
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- }
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- }
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- }
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- } else if (eventType == "renounce") {
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- var id = service.host + ":" + service.port + ":" + service.name;
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- if(serviceInfos[id]) {
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- var serviceInfo = serviceInfos[id];
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- delete serviceInfos[id];
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- if (events["serviceRenounced"]) {
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- for(var callbackId in events["serviceRenounced"]) {
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- var callback = events["serviceRenounced"][callbackId];
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- callback(serviceInfo);
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- }
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- }
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- }
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- }
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- }
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- }
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- } catch(e) {
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- // ignore...
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- }
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- }
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- exec(messageCallback, null, 'Diont', 'listen', [ instanceId ]);
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-
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- // =====
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- // Exported functions
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- // =====
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-
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- exports.announceService = function(service) {
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- if (!service.host) {
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- chrome.system.network.getNetworkInterfaces(function(networkInterfaces) {
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- var eth1 = networkInterfaces[1],
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- address = eth1.address;
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- service.host = address;
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- });
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- }
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- if (!service.host || !service.port || !service.name) {
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- return false;
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- }
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- var id = service.host + ":" + service.port + ":" + service.name;
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- if(!serviceInfos[id]) {
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- var serviceInfo = serviceInfos[id] = {
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- isOurService: true,
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- service: service
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- }
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- sendAnnouncement(serviceInfo);
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- }
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- }
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-
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- exports.renounceService = function(service) {
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- if (!service.host || !service.port || !service.name) {
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- return false;
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- }
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- var id = service.host + ":" + service.port + ":" + service.name;
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- if(serviceInfos[id] && serviceInfos[id].isOurService) {
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- sendRenouncement(serviceInfos[id]);
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- delete serviceInfos[id];
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- }
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- }
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-
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- exports.queryForServices = function() {
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- queryForServices();
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- }
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-
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- exports.on = function(eventName, callback) {
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- if(!events[eventName]) {
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- events[eventName] = {};
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- }
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- var callbackId = guid();
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- events[eventName][callbackId] = callback;
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- return callbackId;
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- }
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-
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- exports.off = function(eventName, callbackId) {
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- if(!events[eventName]) {
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- return false;
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- }
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- delete events[eventName][callbackId];
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- return true;
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- }
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-
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- exports.getServiceInfos = function() {
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- return JSON.parse(JSON.stringify(serviceInfos));
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- }
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-
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- // =====
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- // Helper functions
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- // =====
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-
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- function generalSuccessCallback(success) {
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- // ...
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- }
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-
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- function generalFailCallback(error) {
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- // ...
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- }
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-
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- function sendAnnouncement(serviceInfo) {
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- var serviceInfosToAnnounce = [];
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- if (serviceInfo instanceof Array) {
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- serviceInfosToAnnounce = serviceInfo;
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- } else {
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- serviceInfosToAnnounce = [serviceInfo];
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- }
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- var messageObject = {
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- eventType: "announce",
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- fromDiontInstance: instanceId,
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- serviceInfos: serviceInfosToAnnounce
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- }
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- var message = JSON.stringify(messageObject);
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- exec(generalSuccessCallback, generalFailCallback, 'Diont', 'send', [ instanceId, message, host, port ]);
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- }
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-
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- function sendRenouncement(serviceInfo) {
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- var serviceInfosToRenounce = [];
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- if (serviceInfo instanceof Array) {
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- serviceInfosToRenounce = serviceInfo;
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- } else {
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- serviceInfosToRenounce = [serviceInfo];
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- }
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- var messageObject = {
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- eventType: "renounce",
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- fromDiontInstance: instanceId,
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- serviceInfos: serviceInfosToRenounce
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- }
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- var message = JSON.stringify(messageObject);
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- exec(generalSuccessCallback, generalFailCallback, 'Diont', 'send', [ instanceId, message, host, port ]);
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- }
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-
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- function queryForServices() {
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- var messageObject = {
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- eventType: "query",
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- fromDiontInstance: instanceId
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- }
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- var message = JSON.stringify(messageObject);
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- exec(generalSuccessCallback, generalFailCallback, 'Diont', 'send', [ instanceId, message, host, port ]);
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- }
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-
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- function guid() {
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- function s4() {
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- return Math.floor((1 + Math.random()) * 0x10000).toString(16).substring(1);
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- }
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- return s4() + s4() + '-' + s4() + '-' + s4() + '-' + s4() + '-' + s4() + s4() + s4();
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- }
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-
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- // =====
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- // Export
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- // =====
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-
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- return exports;
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-}
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