ERROR
HTTP错误码：ERROR：<err code>
HTTP错误码会以ERROR:<err code>形式上报。
<err code>定义：
| 取值 | 英文说明 | 中文说明 |
|---|---|---|
| 0 | Unknown session id | 未知的会话ID |
| 1 | File is too short | 文件的内容太短 |
| 2 | DNS is fail | 域名解析失败 |
| 3 | HTTP is busy | HTTP任务正忙 |
| 4 | Socket is wrong | 套接字失败 |
| 5 | Connect fail | 连接失败 |
| 6 | File is error | 文件错误 |
| 7 | Connection is closed | 连接已关闭 |
| 8 | Connection is destroyed | 连接已销毁 |
| 9 | HTTP header is not found | HTTP头不存在 |
| 10 | HTTP authentication scheme is not supported | HTTP认证机制不支持 |
| 11 | PDP active is wrong | PDP激活失败 |
| 12 | Param is wrong | 参数有误 |
| 13 | No buffer | 缓冲区不足 |
| 14 | PDP deactive is wrong | PDP去激活失败 |