websocket service

First, the front and back end common communication method1. AjaxThe browser initiates the request, the server returns the data, the server cannot actively return the data, the real-time data interaction can only be Ajax polling (let the browser send a request in a few seconds, and then update the client display. This approach actually wastes a lot of traffic and creates a lot of pressure on the service side.2. WebSocketWebSocket is HTML5 out of the Th

", function (code, reason) { console.log ("Turn off Connection") }); Conn.on ("Error", function (code, reason) { console.log ("abnormally Close") }) . Listen (8001) Console.log ("WebSocket established") "Game1 Code": by clicking to get the contents of three boxes, upload to the server "Game2 Code": Gets the message pushed by the service and displays Run Screenshots:

client and server side can directly exchange data through TCP. Because WebSocket is inherently a TCP connection, it is stable, so it has a performance advantage over Comet and polling, as shown in the figure: Back to top three, websocket connection 3.1 connection established The client side sends a handshake request with the request message as shown in the figure: Unlike ordinary HTTP requests, this req

); Err! = Nil {break} else {fmt. Println ("Send to Client:", str)}}} Then correspond with a URL: http. Handle ("/ws", WebSocket. Handler (Onwebsocket)) The complete code is as follows: Package Mainimport ("bytes" "Errors" "FMT" "Html/template" "Net/http" "Runtime" "Golang.org/x/net/websocket")//Port const (Http_port string = "Https_port string =" 443 ")//directory const (Css_client_path ="/css/"Dart_cli

ServerEndpointConfig.Configurator { @Override public void modifyHandshake(ServerEndpointConfig config,HandshakeRequest request, HandshakeResponse response) { HttpSession httpSession = (HttpSession) request.getHttpSession(); config.getUserProperties().put(HttpSession.class.getName(), httpSession); }} Add this configuration in the websocket service, just like this @ServerEndpoint(valu

Week after week, time flies, every weekend is very happy but very confused. Happy is not work, the wandering is what they learned this week, their skills have not improved, how to deal with this ever-changing society ... This week, I decided to write weekly notes about what I did and what I learned every week.This week's work on Developing IM (live chat) modules, the technology to use is websocket. Because just contact

1. What is WebSocket WebSocket protocol is HTML5 a new protocol. It implements the browser and server Full-duplex communication (Full-duplex). The first handshake needs to be done with an HTTP request. 1. Traditional way of web communication 1. Working mode: Client Request-service-side response 2. Applicable scenarios: Information changes are not particularly fre

the version is 8. In the 10 version of the communication protocol, the client sends 8.The WebSocket client is implemented in the Chrome 14 browser without its own implementation. can go to download one when WebSocket client is used.2. Create a service-side keyOur server intercepts the Key1 (length 24)4tajitqo9so2wu8lkrsq3w==With it and a custom string (length 36

fails, you can check the errno to determine if the signal is interrupted.Because the program will run all the time and know that the signal is terminated, the destructor is not very important. Here the destructor is removed by calling Inotify_rm_watch all the previously saved WD, and then closed by calling the INotify file descriptor via close call: code is as follows copy code filewatcher::~filewatcher () { if (inotifyfd > 0) { Boost::unordered::unordered_m

convenient to use because of encapsulation. HTML: The function is very simple, that is, to connect to the websocket service and submit registration information, of course, to be more flexible, we will re-open the connection form when detecting that the connection is closed. The specific JSCodeAs follows: Function connect () {channel = new tcpchannel (); channel. connected = function (EVT) {$ ('# dlgco

json components on various platforms are relatively mature. analyze json data and map it to the server for processing. The following code uses a simple user registration method to demonstrate the interaction process between HTML 5 and websocket using josn. It is very convenient to use because of encapsulation. HTML: The function is very simple. After the websocket ser