429 Too Many Requests
{
    "code": 276001,
    "message": "Rate limit exceeded error"
}

#### 正常响应
```text
{
    "type": "system.started",
    "code": 0,
    "message": "success",
    "headers": {
        "session_id": "xxx"
               }
}
```

#### 异常响应
```text
{
    "type": "system.started",
    "code": 216100,
    "message": "语速参数错误, 请输入0-15的整数",
    "headers": {
        "session_id": "xxx"
               }
}
```

#### 正常响应
```text
WebSocket opcode`：`binary
WebSocket消息体：音频二进制数据
```

#### 异常响应
```text
{
    "type": "system.error",
    "code": 216103,
    "message": "文本过长, 请控制在1000字以内",
    "headers": {
        "session_id": "xxx"
    }
}
```

{
    "type":"system.finished",
    "code": 0,
    "message": "success",
}