basic-connect 出现 AWS_ERROR_MQTT_UNEXPECTED_HANGUP 同時错误码為1049。

Question

【以下的问题经过翻译处理】 我无法运行样例 [basic-connect](https://github.com/aws/aws-iot-device-sdk-cpp-v2/tree/main/samples/mqtt/basic_connect)，我收到以下错误信息：

```
[ERROR] [2022-10-05T13:09:04Z] [00005b28] [socket] - id=000001C5BE6C1E30 handle=0000000000000214: connect completion triggered with error -1073741252
[ERROR] [2022-10-05T13:09:04Z] [00005b28] [socket] - id=000001C5BE6C1E30 handle=0000000000000214: connection error with code 1049
Connection failed with error libaws-c-mqtt: AWS_ERROR_MQTT_UNEXPECTED_HANGUP, The connection was closed unexpectedly.
Connection failed
```

当我运行以下命令时：

> basic-connect.exe --client\_id "ME" --endpoint "[...]-ats.iot.eu-west-1.amazonaws.com" --cert "[...]/Certificate.crt" --key "[...]/private.key" --verbosity "Info"

完整输出为：

```
[INFO] [2022-10-05T13:09:04Z] [00007020] [pki-utils] - static: loading certificate chain with 3 certificates.
Connecting...
[INFO] [2022-10-05T13:09:04Z] [00007020] [mqtt-client] - id=000001C5BE6AE5F0: using ping timeout of 3000000000 ns
[INFO] [2022-10-05T13:09:04Z] [00007020] [thread] - id=000001C5BE69BFD0: cpu affinity of cpu_id 0 was specified, attempting to honor the value.
[INFO] [2022-10-05T13:09:04Z] [00005bd8] [socket] - static: initializing WinSock
[INFO] [2022-10-05T13:09:04Z] [00005bd8] [socket] - static: loading WSAID_CONNECTEX function
[INFO] [2022-10-05T13:09:04Z] [00005bd8]

Answer

【以下的回答经过翻译处理】 '-1073741252是0xC000023C，代表状态为STATUS\_NETWORK\_UNREACHABLE，和AWS\_IO\_SOCKET\_NO\_ROUTE\_TO\_HOST一样，看起来你可能有一些本地网络问题。请仔细检查您正在使用的IoT Core终端节点是否正确，特别是您删去了的14个字符的唯一标识符。
更新：请还要检查您的IoT策略（如下面的评论交流所述）。

basic-connect 出现 AWS_ERROR_MQTT_UNEXPECTED_HANGUP 同時错误码為1049。

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