socket io express

This article will share with you how to use node. js to implement multi-room chat code based on socket. io + express. It is very practical and can be referenced by partners who need it. Socket. io Introduction Socket.

Session is required for some authentication in the nodejs project. For example, the demo of the nodejs chat room I wrote is the authentication implemented through session. If a session exists, you can directly log on to the chat room without logging on again. I also found many session calling methods in the Express framework on the Internet, but I found that not many of them are actually usable. Today, based on the production process of the chat room,

A simple example of NodeJS + Express + Socket. io2. initialize a NodeJS web application: Open the CMD window. Run cmd: "mkdir myapp" to create a new folder named myapp. Run cmd: "cd myapp" and switch to the myapp folder. Run cmd: "npm init" to create the file package. json. 3. Express entry application: In the above CMD window, run cmd: "npm install

socket.on('reply', function(){ /* */ }); // listen to the event}); Note that Socket. io is not fully implemented by WebSocket. Note: Socket. IO is not a WebSocket implementation. although Socket. IO indeed uses WebSocket as a tra

Basic Application of socket. io tutorial (2) socket. io tutorial Preface Socket. IO supports timely, bidirectional, and event-based communication. It can work on every platform, every browser, and every device, with the same relia

The Socket. IO instance in node. js, node. jssocket. io 1. Introduction First Socket. IO Official Website: http://socket.io The official website is very concise, and there is no API documentation. There is only one simple "How to use" for reference. Because

Nodejs + Socket. io implement communication instance code, nodejssocket. io Directory structure D:. │ package.json │ server.js │ └─public index.html socket.io.js Required Conditions Socket. io. js is used to initialize io on th

Introduction Java NiO, introduced from JDK1.4, provides a completely different way of working with standard IO. The NIO package (java.nio.*) introduces four key abstract data types that work together to address some of the problems in traditional I/O classes. 1, Buffer: It is a linear table structure that contains data and is used for reading and writing. It also provides a special class for I/O operations for memory-mapped files. 2, Charset: I

install npm-gfThe first one is that there is no prompt for the settings. The second step will go to github to download npm files and progress, and the fourth step is to install npm to node. js will copy several cmd files and the mode_modules folder to the nodejs directory.In this way, npm is configured.If you need to install any modules, enter npm install ***.If there is no npm or windows users can use github to download socket.

Broadcast messages of socket. io in node. js, node. jssocket. io After multiple clients establish a connection with the server. the io () server has a sockets attribute. The attribute value is all socket objects connected to the client. you can use the send method or emit me

Node. js uses the socket. io method, node. jssocket. io You can use socket. io to create a socket. io server. However, this server depends on a created http server. After the http serve

connection request. The second parameter is a callback function (ERR, success). Success is a Boolean value. False indicates a connection failure. Err indicates an error code. This function can be used to determine whether to continue. Transports ( Allowupgrades (Boolean): indicates whether the transfer protocol can be upgraded. The default value is true. Cookie (string | Boolean): the name of the HTTP cookie. The default value is Io. Use

Node socket. io event Usage Details, nodesocket. io The socket. io class library can not only send messages to each other, but also send events to each other through the emit method of the socket port object. In the previous event

, directly submit the command + user buffer to the kernel driver, and then return immediately. At this time, the user thread can continue to run and do other things. When you want to know the command completion status, you can use getqueuedcompletionstatus to obtain the completed request and data. Therefore, you can submit a large number of IO requests first, and then process and return them slowly. The reason why iocp is more efficient than epoll is

'); // open the Socket socket. onopen = function (event) {// send an initialization message socket. send ('I am the client and I \' m listening! '); // Listen to the message socket. onmessage = function (event) {console. log ('client received ed a message', event) ;}; // listen to the

to start the server. Now you can access localhost: 8000.Use express and socket. io In the previous article, I mentioned the nodejs web Framework: express. The following Code creates a socket Application Based on express and

edit a document at the same time and view the modifications made by each user. Connect the server to the client Socket. io provides APIs for both the server and client. The socket. io Server must be bound to an http. Server instance. Bind http. Server 1. Implicit binding Call the listen or attach function for implici

Android-Socket causes the Socket to close and cannot send and receive data after the IO stream is closed. androidio Use Socket to send data as an example: When sending data, declare: DataOutputStream OS = new DataOutputStream (socket. getOutputStream ()); Recently, I encount