> For the complete documentation index, see [llms.txt](https://socket.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://socket.gitbook.io/docs/3-ke-hu-duan-apiclientapi/3.1-io/initialization_examples_with_a_custom_parser.md).

# 3.1.9 初始化示例-自定义解析器

默认的[解析器](https://github.com/socketio/socket.io-parser)以牺牲性能为代价来提升兼容性（对`blob`、`文件`、二进制检查的支持）。可以提供一个定制的解析器来满足应用程序的需求。请看[这里](https://github.com/socketio/socket.io/tree/master/examples/custom-parsers)的例子。

```javascript
const parser = require('socket.io-msgpack-parser');//or require('socket.io-json-parser')
const socket=io({
    parser
})

// 服务器端必须具有相同的解析器，才能进行通信
const io= require('socekt.io')({
    parser
})
```