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[![Build Status](https://secure.travis-ci.org/einaros/ws.png)](http://travis-ci.org/einaros/ws) | ||
# `wslite`: a simple, pure node.js websocket library # | ||
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# ws: a node.js websocket library # | ||
This project is based on the excellent `ws` library by Einar Otto Stangvik. `ws` can be found at https://github.com/einaros/ws | ||
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`ws` is a simple to use websocket implementation, up-to-date against RFC-6455, and [probably the fastest WebSocket library for node.js](http://hobbycoding.posterous.com/the-fastest-websocket-module-for-nodejs). | ||
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Passes the quite extensible Autobahn test suite. See http://einaros.github.com/ws for the full reports. | ||
## Differences between `wslite` and `ws` ## | ||
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Comes with a command line utility, `wscat`, which can either act as a server (--listen), or client (--connect); Use it to debug simple websocket services. | ||
- Fewer dependencies (only `options` and `commander` required) | ||
- Pure JavaScript, although fully compatible (and automatically detects) `bufferutil` and `validation` utilities from `ws` | ||
- Rewritten WebSocketServer, simplified/extended API incompatible with original | ||
- Build scripts/benchmarks/examples/tests/docs removed (tests will return in the near future) | ||
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## Protocol support ## | ||
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* **Hixie draft 76** (Old and deprecated, but still in use by Safari and Opera. Added to ws version 0.4.2, but server only. Can be disabled by setting the `disableHixie` option to true.) | ||
* **HyBi drafts 07-12** (Use the option `protocolVersion: 8`, or argument `-p 8` for wscat) | ||
* **HyBi drafts 13-17** (Current default, alternatively option `protocolVersion: 13`, or argument `-p 13` for wscat) | ||
## So which should I use? ## | ||
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_See the echo.websocket.org example below for how to use the `protocolVersion` option._ | ||
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## Usage ## | ||
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### Installing ### | ||
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`npm install ws` | ||
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### Sending and receiving text data ### | ||
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```js | ||
var WebSocket = require('ws'); | ||
var ws = new WebSocket('ws://www.host.com/path'); | ||
ws.on('open', function() { | ||
ws.send('something'); | ||
}); | ||
ws.on('message', function(data, flags) { | ||
// flags.binary will be set if a binary data is received | ||
// flags.masked will be set if the data was masked | ||
}); | ||
``` | ||
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### Sending binary data ### | ||
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```js | ||
var WebSocket = require('ws'); | ||
var ws = new WebSocket('ws://www.host.com/path'); | ||
ws.on('open', function() { | ||
var array = new Float32Array(5); | ||
for (var i = 0; i < array.length; ++i) array[i] = i / 2; | ||
ws.send(array, {binary: true, mask: true}); | ||
}); | ||
``` | ||
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Setting `mask`, as done for the send options above, will cause the data to be masked according to the websocket protocol. The same option applies for text data. | ||
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### Server example ### | ||
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```js | ||
var WebSocketServer = require('ws').Server | ||
, wss = new WebSocketServer({port: 8080}); | ||
wss.on('connection', function(ws) { | ||
ws.on('message', function(message) { | ||
console.log('received: %s', message); | ||
}); | ||
ws.send('something'); | ||
}); | ||
``` | ||
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### echo.websocket.org demo ### | ||
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```js | ||
var WebSocket = require('ws'); | ||
var ws = new WebSocket('ws://echo.websocket.org/', {protocolVersion: 8, origin: 'http://websocket.org'}); | ||
ws.on('open', function() { | ||
console.log('connected'); | ||
ws.send(Date.now().toString(), {mask: true}); | ||
}); | ||
ws.on('close', function() { | ||
console.log('disconnected'); | ||
}); | ||
ws.on('message', function(data, flags) { | ||
console.log('Roundtrip time: ' + (Date.now() - parseInt(data)) + 'ms', flags); | ||
setTimeout(function() { | ||
ws.send(Date.now().toString(), {mask: true}); | ||
}, 500); | ||
}); | ||
``` | ||
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### wscat against echo.websocket.org ### | ||
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$ npm install -g ws | ||
$ wscat -c ws://echo.websocket.org -p 8 | ||
connected (press CTRL+C to quit) | ||
> hi there | ||
< hi there | ||
> are you a happy parrot? | ||
< are you a happy parrot? | ||
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### Other examples ### | ||
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For a full example with a browser client communicating with a ws server, see the examples folder. | ||
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Otherwise, see the test cases. | ||
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### Running the tests ### | ||
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`make test` | ||
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## API Docs ## | ||
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_Note: This api documentation is currently incomplete. For a better understanding of the api, see the test set._ | ||
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### WebSocket | ||
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`supports.binary` | ||
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> Returns true or false based on whether the underlying protocol (hixie, hybi, etc) has binary support. | ||
Example: | ||
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```js | ||
var wss = new WebSocketServer({port: 8080}); | ||
wss.on('connection', function(client) { | ||
if (client.supports.binary) ... | ||
}); | ||
``` | ||
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## Todos ## | ||
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* Expose Sender and Receiver configuration options through WebSocket, and test that properly. | ||
* Cleanup configuration for Sender, and add similar bits to Receiver. | ||
* Either expose a configurable setting indicating favoring speed or memory use, or do a timer based shrink of Receiver's pools. | ||
* Make necessary changes to also support the even older hixie-75? Or at least write a few more tests for Hixie-76 to verify that fragmented nonce transfers really work. | ||
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## License ## | ||
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(The MIT License) | ||
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Copyright (c) 2011 Einar Otto Stangvik <einaros@gmail.com> | ||
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Permission is hereby granted, free of charge, to any person obtaining | ||
a copy of this software and associated documentation files (the | ||
'Software'), to deal in the Software without restriction, including | ||
without limitation the rights to use, copy, modify, merge, publish, | ||
distribute, sublicense, and/or sell copies of the Software, and to | ||
permit persons to whom the Software is furnished to do so, subject to | ||
the following conditions: | ||
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The above copyright notice and this permission notice shall be | ||
included in all copies or substantial portions of the Software. | ||
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THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, | ||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | ||
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | ||
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | ||
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
In short: `ws`. This library has been stripped down and repurposed for a specific use case |
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{ | ||
"author": "Einar Otto Stangvik <einaros@gmail.com> (http://2x.io)", | ||
"name": "ws", | ||
"description": "simple to use, blazing fast and thoroughly tested websocket client, server and console for node.js, up-to-date against RFC-6455", | ||
"author": "Jeremy Debate <jezzadebate@mac.com>", | ||
"name": "wslite", | ||
"description": "simple, pure node.js websocket library based on the 'ws' library by einaros", | ||
"version": "0.4.7", | ||
"repository": { | ||
"type": "git", | ||
"url": "git://github.com/einaros/ws.git" | ||
}, | ||
"bin": { | ||
"wscat": "./bin/wscat" | ||
}, | ||
"scripts": { | ||
"test": "make test", | ||
"preinstall": "make" | ||
"url": "git://github.com/jezzadebate/wslite.git" | ||
}, | ||
"engines": { | ||
"node": ">=0.4.0" | ||
}, | ||
"dependencies": { | ||
"commander": "0.5.0", | ||
"options": "latest" | ||
}, | ||
"devDependencies": { | ||
"mocha": "0.8.x", | ||
"should": "0.4.2", | ||
"benchmark": "0.3.x", | ||
"tinycolor": "0.x" | ||
} | ||
} |