Comments (4)
spikelin
commented on September 21, 2024
谢谢指出问题。bug1的int和size_t类型转换确实不妥，我们会检查。bug2目前两个指针都只在_serialize_connect_packet内使用，运行不会有问题。不过确实Free之后应该置为NULL比较合理。
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zmqccj
commented on September 21, 2024
bug1在跑OTAdemo的时候应该会复现，下载时会出现段错误，因为len变量附近的一个指针被改了。第二个bug在自动重连的时候会复现，一方面是重复Free导致程序挂掉，另一方面是，这里Free掉了username和password，怎么重连上呢？你们的SDK真的测试过了么？
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spikelin
commented on September 21, 2024
请问你的运行环境是什么？可有改动过SDK的代码？64位系统在我们ubuntu14.04/16.04都有测试过，并没有出现你所说的问题。
关于bug2，你可以仔细看看代码，username和password在_serialize_connect_packet内使用前都是会重新malloc并赋值的，所以不会有问题。
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zmqccj
commented on September 21, 2024
我重新看了下，bug2是我们以前改了代码，和你们的SDK不一样了，你们这里是可以的。bug1你们没有复现应该是因为你们的优化选项是-Os，你们可以试下-O0，应该会出现Segmentation fault
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Related Issues (20)
- 此处应该以返回值小于rc作为失败条件，而非等于0，因为IOT_MQTT_Publish返回的正值为包的编号。 HOT 1
- 是否可以返回特定的错误码呢？ HOT 1
- SDK支持多个子设备上线 HOT 1
- 希望移植方面可以直接支持源码移植，而不是现在的交叉编译，这样更容易裁剪 HOT 1
- 希望移植方面可以直接支持源码移植，而不是现在的交叉编译，这样更容易裁剪 HOT 1
- cmake选项通过命令行指定 HOT 1
- ESP8266平台无法连接到服务器 HOT 1
- 使用SSL认证失败，直接使用的是mqtt_sample,同样的证书用MQTT.fx测试没有问题 HOT 2
- FEATURE_AT_OS_USED 关闭 编译出错 HOT 1
- at_client.c 多线程模式存在宕机问题 HOT 1
- 关闭ATsocket时，未判断指针是否为NULL HOT 1
- MQTT连接失败 HOT 3
- QCLOUD_IOT_DEVICE_SDK_VERSION的版本号内容未修改 HOT 1
- PATH_MAX在Linux下编译出现重定义 HOT 1
- samples/mqtt/multi_thread_mqtt_sample.c, multi_client_shadow_sample.c, ota_mqtt_sample.c存在内存DF和UAF问题。 HOT 2
- 如何设置遗愿消息 HOT 1
- linux编译失败失败。
- 腾讯云C-SDK中充斥着大量的不安全函数
- linux ubuntu18.04编译不过 HOT 1
- 连接成功后会立马出现这种错误，network read failed, rc: -708. MQTT Disconnect.
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