Upgrade to latest version of socket.io (0.6.8 -> npm install [email protected], which is patched to work with HAProxy) and download the latest version of HAProxy. Here is an example config file: global maxconn 4096 # Total Max Connections. This is dependent on ulimit nbproc 2 defaults mode http frontend all 0.0.0.0:80 timeout client 5000 default_backend … Read more
Getting the ball rolling with this community wiki answer. Feel free to edit me with your improvements. ws WebSocket server and client for node.js. One of the fastest libraries if not the fastest one. websocket-node WebSocket server and client for node.js websocket-driver-node WebSocket server and client protocol parser node.js – used in faye-websocket-node faye-websocket-node WebSocket … Read more
I’ve found a great example using javax.websocket here: http://www.programmingforliving.com/2013/08/jsr-356-java-api-for-websocket-client-api.html Here the code based on the example linked above: TestApp.java: package testapp; import java.net.URI; import java.net.URISyntaxException; public class TestApp { public static void main(String[] args) { try { // open websocket final WebsocketClientEndpoint clientEndPoint = new WebsocketClientEndpoint(new URI(“wss://real.okcoin.cn:10440/websocket/okcoinapi”)); // add listener clientEndPoint.addMessageHandler(new WebsocketClientEndpoint.MessageHandler() { public void … Read more
The WebSocket connection starts its life with an HTTP or HTTPS handshake. When the page is accessed through HTTP, you can use WS or WSS (WebSocket secure: WS over TLS) . However, when your page is loaded through HTTPS, you can only use WSS – browsers don’t allow to “downgrade” security.
Probably it’s an encoding issue. Here’s a working C# server I wrote: class Program { static void Main(string[] args) { var listener = new TcpListener(IPAddress.Loopback, 8181); listener.Start(); using (var client = listener.AcceptTcpClient()) using (var stream = client.GetStream()) using (var reader = new StreamReader(stream)) using (var writer = new StreamWriter(stream)) { writer.WriteLine(“HTTP/1.1 101 Web Socket Protocol … Read more
Using local storage I created a simple demo that should accomplish what your looking to do. Basically, it simply maintains a count of currently opened windows. When the window is closed the unload events fire and remove it from the total window count. When you first look at it, you may think there’s more going … Read more
Many of the generic tradeoffs between webSocket and Ajax are discussed here: websocket vs rest API for real time data? Some tradeoff issues for mobile devices are discussed here: Cordova: Sockets, PushNotifications, or repeatedly polling server? In a nutshell, if your data is primarily server-driven and then needs to be sent out to clients and … Read more
The most efficient operation for what you’re describing would be to use a webSocket connection between client and server and have the server send updated price information directly to the client over the webSocket ONLY when the price changes by some meaningful amount or when some minimum amount of time has elapsed and the price … Read more
There isn’t native support in terms of there being a standard PHP WebSocket object natively available. You’ll need to use a library. The next thing to consider is how the WebSocket server runs. Normally PHP runs in Apache, Nginx (via FastCGI) or on Microsoft IIS (via Fast CGI). With Apache and IIS this may be … Read more
Misconceptions There are few common misconceptions regarding WebSocket and Socket.IO: The first misconception is that using Socket.IO is significantly easier than using WebSocket which doesn’t seem to be the case. See examples below. The second misconception is that WebSocket is not widely supported in the browsers. See below for more info. The third misconception is … Read more