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82 lines
2.3 KiB
Markdown
82 lines
2.3 KiB
Markdown
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# socket.io-parser
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[](https://github.com/socketio/socket.io-parser/actions)
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[](http://badge.fury.io/js/socket.io-parser)
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A socket.io encoder and decoder written in JavaScript complying with version `5`
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of [socket.io-protocol](https://github.com/socketio/socket.io-protocol).
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Used by [socket.io](https://github.com/automattic/socket.io) and
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[socket.io-client](https://github.com/automattic/socket.io-client).
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Compatibility table:
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| Parser version | Socket.IO server version | Protocol revision |
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|----------------| ------------------------ | ----------------- |
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| 3.x | 1.x / 2.x | 4 |
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| 4.x | 3.x | 5 |
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## Parser API
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socket.io-parser is the reference implementation of socket.io-protocol. Read
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the full API here:
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[socket.io-protocol](https://github.com/learnboost/socket.io-protocol).
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## Example Usage
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### Encoding and decoding a packet
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```js
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var parser = require('socket.io-parser');
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var encoder = new parser.Encoder();
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var packet = {
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type: parser.EVENT,
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data: 'test-packet',
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id: 13
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};
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encoder.encode(packet, function(encodedPackets) {
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var decoder = new parser.Decoder();
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decoder.on('decoded', function(decodedPacket) {
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// decodedPacket.type == parser.EVENT
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// decodedPacket.data == 'test-packet'
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// decodedPacket.id == 13
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});
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for (var i = 0; i < encodedPackets.length; i++) {
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decoder.add(encodedPackets[i]);
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}
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});
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```
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### Encoding and decoding a packet with binary data
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```js
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var parser = require('socket.io-parser');
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var encoder = new parser.Encoder();
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var packet = {
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type: parser.BINARY_EVENT,
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data: {i: new Buffer(1234), j: new Blob([new ArrayBuffer(2)])},
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id: 15
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};
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encoder.encode(packet, function(encodedPackets) {
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var decoder = new parser.Decoder();
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decoder.on('decoded', function(decodedPacket) {
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// decodedPacket.type == parser.BINARY_EVENT
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// Buffer.isBuffer(decodedPacket.data.i) == true
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// Buffer.isBuffer(decodedPacket.data.j) == true
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// decodedPacket.id == 15
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});
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for (var i = 0; i < encodedPackets.length; i++) {
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decoder.add(encodedPackets[i]);
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}
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});
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```
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See the test suite for more examples of how socket.io-parser is used.
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## License
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MIT
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