offline-caching

I'm currently working on adding HTML5 offline support to my web application, and am mostly following the same approach of mgwt: Generate manifest files per permutation at compulation time Using a servlet to serve the manifest file, based on the user-agent of the browser. My question involves step 2: In my servlet, I want to detect which permutation to serve for a certain request. The way I do this now is: Get the user agent string from the request Map this (using simple string operations (e.g. userAgent.contains("safari") ) to the 'agent id', which I can map using a mapping file to the

Consider the following problem. You'd like to serve an offline manifest/appcache file for your GWT project. In such a case, there are two issues: GWT generates different permutations of js files (depending on browser version). When loading the application, some GWT javascript code uses your user-agent properties to include the appropriate one. You'll want to generate a different manifest file for each of these permutations, as you don't want to cache files you won't use (and these files can be around 0.5MB per permutation). This issue is covered by the MGWT Manifest Linker , which generates

I am developing a chat app that uses firebase database to store data. The usual approach while developing a chat app is to keep the database nodes synced so that you access the messages offline. So the problem rises when I implement the firebase offline capabilities to keep the data nodes synced. Firebase suggests two required steps for accessing data offline: Enabling disk persistance this is enabled according to the documentation by using this line of code (in my case I add it in application class): FirebaseDatabase.getInstance().setPersistanceEnabled(true); and Keeping a node synced this is

I am using AFNetworking in my app and try to make it work in the offline mode by use the cached data if available. I expected after I set the request cache policy to NSURLRequestReturnCacheDataDontLoad, getPath:parameters:success:failure: will success with the cached data while offline. However, even if there are data in the cache (I verified by check the cache with the code), getPath will simply fail in airplane mode. There was a thread in AFNetworking github: https://github.com/AFNetworking/AFNetworking/issues/378 But seemed the issue is not addressed at all. The author of AFNetworking

I have the following: var express = require('express'), app = express.createServer(); app.get("/offline.manifest", function(req, res){ res.contentType("text/cache-manifest"); res.end("CACHE MANIFEST"); }); app.listen(8561); The network tab in Chrome says it's text/plain . Why isn't it setting the header? The code above works, my problems were caused by a linking to an old version of express-js res.type('json') works too now and as others have said, you can simply use res.json({your: 'object'}) Try this code: var express = require('express'), app = express.createServer(); app.get("/offline