WebSocket Package

For user

Install package

npm i wspackage

How to use

1. Write script file
   Server Example (NodeJS):

   // server.js
   const { wsServer } = require('wspackage');
   
   /*
       wsServer config structure:
       {
           httpServer: @undefined | @http.Server
           port: @undefined | @number | @string,
           host: @number | @string,
           acceptedProtocol: @string | [ @string, ... ]
       }
   
       Note: If acceptedProtocol is undefined, you should use protocol function to set sub protocol
   */
   const ws = wsServer({
       httpServer: http.createServer((req, res) => {
           res.writeHead(404);
           res.end();
       }),
       port: 1234,
       host: '0.0.0.0',
       acceptedProtocol: ['protocol1', 'protocol2']
   });
   ws.listen();
   
   const callback = (e, ...args) => {
       console.log(e.type);        // event name
       console.log(e.sender);      // sender info (socket connection)
       console.log(e.timestamp);   // new Date()
       console.log(args);
   };
   
   // event handler for all protocols
   ws.on('register_event_name', callback);                               // register event
   ws.once('register_once_event_name', callback);                        // register event once
   ws.off('remove_event_name', callback);                                // remove event
   ws.emit('trigger_event_name', [arg1], [arg2], [...]);                 // trigger event (broadcast)
   ws.send('target_id', 'trigger_event_name', [arg1], [arg2], [...]);    // trigger event (target socket connection)
   
   // wspackage default event
   ws.on('listen', callback);      // server listen
   ws.on('open', callback);        // websocket connection open
   ws.on('close', callback);       // websocket connection closed
   ws.on('error', callback);       // websocket connection throw error
   
   // event handler for sub protocol
   const conn1 = ws.protocol('protocol1');
   conn1.on('trigger_event_name', callback);
   const conn2 = ws.protocol('protocol2');
   conn2.on('trigger_event_name', callback);
   
   // other definition in wspackage
   ws.close();                     // close all websocket connection
   

   Client Example (JavaScript ES6):

   // client.js
   import { WSPack } from './browser-client.esm.js';
   
   let callback = (e, ...args) => {
       console.log(e);
       console.log(args);
   };
   
   let conn1 = WSPack('ws://127.0.0.1:1234', 'protocol1');
   
   // event handler
   conn1.on('register_event_name', callback);                  // register event
   conn1.once('register_once_event_name', callback);           // register event once
   conn1.off('remove_event_name', callback);                   // remove event
   conn1.emit('trigger_event_name', [arg1], [arg2], [...]);    // trigger event
   
   // wspackage default event
   conn1.on('open', callback);         // websocket connection open
   conn1.on('close', callback);        // websocket connection closed
   conn1.on('error', callback);        // websocket connection throw error
   
   // other definition in wspackage
   conn1.close();                      // close websocket connection between protocol1 and server
   
   // event handler for another sub protocol
   let conn2 = WSPack('ws://127.0.0.1:1234', 'protocol2');
   conn2.on('trigger_event_name', callback);
   

   • acceptedProtocol can only use lowercase in wsServer config.
   • Please refer to Event Emitter for other event handler usages.
   • Callback parameter is based on ws.

2. Run command line:

   node server.js

3. Run client page

---

For maintainer

Install project

• Clone project:

  git clone <project-url>

• Install dependency package:

  npm install --production

Build and Run

• Run test basic server (use node):

  node ./test/basic/server.js

• Run test basic server (use npm):

  npm run test_basic

• Run test multiple protocol server (use node):

  node ./test/multiple/server.js

• Run test multiple protocol server (use npm):

  npm run test_multiple

• Run test shutdown server (use node):

  node ./test/shutdown/server.js

• Run test shutdown server (use npm):

  npm run test_shutdown