# Websocket 通用标准头

[English ](https://en.apis.alltick.co/integration-process/universal-standard-header-description/websocket-common-standard-header)/ 中文

## 请求通用标准头介绍

| 字段      | 名称  | 类型     | 必填项         | 说明                        |
| ------- | --- | ------ | ----------- | ------------------------- |
| cmd\_id | 协议号 | uint32 | 详见各个接口定义有提供 |                           |
| seq\_id | 序列号 | uint32 | 是           | 请求者生成唯一，响应与请求将保持一致        |
| trace   | 跟踪号 | string | 是           | 请求者生成唯一，响应与请求将保持一致,最大长度64 |
| data    | 数据体 | object | 是           | 具体数据格式见各个接口定义             |

```
{
    "cmd_id":22000,
    "seq_id":123,
    "trace":"asdfsdfa",
    "data":{
    }
}
```

## 应答通用标准头介绍

| 字段      | 名称  | 类型     | 说明                                                                                                                                |
| ------- | --- | ------ | --------------------------------------------------------------------------------------------------------------------------------- |
| ret     | 返回值 | int32  | [错误码说明](https://github.com/alltick/realtime-forex-crypto-stock-tick-finance-websocket-api/blob/main/error_code_description_cn.md) |
| msg     | 消息  | string | 对成功或者失败具体的描述                                                                                                                      |
| cmd\_id | 协议号 | uint32 | 详见各个接口定义有提供                                                                                                                       |
| seq\_id | 序列号 | uint32 | 请求者生成唯一，响应与请求将保持一致                                                                                                                |
| trace   | 跟踪号 | string | 请求者生成唯一，响应与请求将保持一致,最大长度64                                                                                                         |
| data    | 数据体 | object | 具体数据格式见各个接口定义                                                                                                                     |

```
{
    "ret":201,
    "msg":"request header param invalid",
    "cmd_id":0,
    "seq_id":0,
    "trace":"",
    "data":{
    }    
}
```

***

#### AllTick网站

{% hint style="info" %}
官方网站：<https://alltick.co/>
{% endhint %}


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