Which is the best way to push WebSocket pushlet dwr?

The three message pushes are not bad, but from the overall effect, Shenzhen Aurora message push is a good choice. JIGUANG Unified Messaging System (UMS) quickly builds your message management platform to achieve multi-channel and multi-channel unified message sending, management, and statistics.

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JIing pushes a variety of message types, developers can easily send system notifications of various mobile platforms through JIJUNG, and can also display a variety of rich text templates in the console. JIGUANG also provides transparent transmission of custom messages, and the client can freely process the message content according to its own logic after receiving it.

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Iteration for (scriptsession session : sessions).

Once you have the session object, you can do whatever you want with this class. （util utilall = new util(session);）

You can push it to whomever you want, as long as you get that person's session, you can push multiple people, it's nothing more than a **basic coat for loop.。 If you want to push everyone, then cancel the comparison in the third row above.

The higher version uses the websocket directly, and the lower version uses the flash socket to simulate the websocket

Comet4j and Pushlet are both based on Comet.

As far as I know, the most used ones should be DWR and COMETD, among which COMETD is powerful and simple to use.

The method of websocket in HTML5 to implement message push:

1. Create a server connection

var socket = new websockect('ws://localhost:8080');

2. Add monitoring events, when the open method is triggered, establish a connection and prepare to send a message.

open', function())

function();

3. Call the method to send a message

somme message to send to the server");

4. Close the connection;

The use of websockets, which is new in HTML5, also requires backend server support, which is now supported by many servers.

1. Polling.

The front-end uses AJAX to make non-stop requests to get the data you want (the easiest and easiest to exhaust server resources).

2. Long connection.

websocket

Use websocket for message push.

3、dwr

Let's just say HTML5 isn't perfect for all browsers.

Generally, multiple frames are used, that is, the websocket is established as a single frame, and this frame is not refreshed with page switching, and other elements that need to be refreshed when page switching are placed in other frames.

In addition, the subject's concerns are completely unnecessary. Before HTML5, polling or AJAX was used to implement message push, and the websocket itself occupies fewer resources than the first two.

There are two methods to send AJAX requests and websockets on a regular basis.

The use of websockets, which is new in HTML5, also requires backend server support, which is now supported by many servers.