Twitter notoriously does not make “available” tweets older than three weeks. In some cases you can only get one week. You’re better off storing tweets for the next three months. Many rightly doubt if they’re even persisted by Twitter. Are you looking for just any tweets? If so, check out the Streaming API’s status/sample method. … Read more
Well, since you have only an API and don’t have control over it in order to change it to use sockets, the only way you have is to poll. As per your polling is concerned, you’re doing the decent approach. But there is one catch in your code above. componentDidMount() { this.timer = setInterval(()=> this.getItems(), … Read more
this is not a good way to do it, it far better to work on the DataReceived event. basically with serial ports there’s a 3 stage process that works well. Receiving the Data from the serial port Waiting till you have a relevant chunk of data Interpreting the data so something like class DataCollector { … Read more
You could use a simple timeout to recursively call ajax_request. success: function(xhr_data) { console.log(xhr_data); if (xhr_data.status == ‘pending’) { setTimeout(function() { ajax_request(); }, 15000); // wait 15 seconds than call ajax request again } else { success(xhr_data); } } Stick a counter check around that line and you’ve got a max number of polls. if … Read more
From my comment: I would use setTimeout [docs] and always call it when the previous response was received. This way you avoid possible congestion or function stacking or whatever you want to call it, in case a request/response takes longer than your interval. So something like this: function refresh() { // make Ajax call here, … Read more
This is simple and it work perfectly… you can add condition about maximal time, or number of try to make it more robust… function sendMessage(msg){ // Wait until the state of the socket is not ready and send the message when it is… waitForSocketConnection(ws, function(){ console.log(“message sent!!!”); ws.send(msg); }); } // Make the function wait … Read more
You may want to use jQuery’s Ajax functions to poll the server every second or so. Then the server can respond with instructions to the browser in near real-time. You can also consider long polling instead of the above, to reduce the latency without increasing the frequency of the polls. Quoting Comet Daily: The Long-Polling … Read more
There seem to be two problems in your code. “stdout” is by default buffered, so the server should flush it explicitly: printf(“I received %s\n”, buffer); fflush(stdout); And the main program should not register for POLLOUT when trying to read (but you may want register for POLLERR): pfds[0].fd = rpipe[0]; pfds[0].events = POLLIN | POLLERR; With … Read more
From what I’ve heard during an Android developers conference in Israel: There is simply a TCP socket waiting in accept mode on a cloud Google server. The TCP connection had been initiated by the Google Play application. That’s why Google Play must be installed on the device for making Google Cloud Messaging (GCM) (formerly Android … Read more
Yes, window.onfocus and window.onblur should work for your scenario: http://www.thefutureoftheweb.com/blog/detect-browser-window-focus