mqtt开启ssl后发送AT指令程序crash reset定位分析_cmqttsslcfg指令

1、背景

展锐8910dm 模组固件只有MQTT功能的AT指令集，需要开发MQTTS的功能。但是在开发过程中遇到程序crash和reset问题，需要排查并解决。

2、定位分析

代码在这里开启ssl。

        if (g_mqtt_ssl_enable_flag == true) {
 
            sprintf(cUrl, "ssl://%s:%s", g_stMqttOpts.m_pcHost, g_stMqttOpts.m_pcPort);
 
        }
 
        else {
 
            sprintf(cUrl, "%s:%s", g_stMqttOpts.m_pcHost, g_stMqttOpts.m_pcPort);
 
        }
 
 
 
    if (g_mqtt_ssl_enable_flag == true) {
 
        MQTTAsync_SSLOptions ssl_opts = MQTTAsync_SSLOptions_initializer;
 
 
 
        bool ret = 0;
 
        ret = mqtts_setCrt(CG_MQTTS_CA_CRT, &mqtts_ca_cert);
 
        if (ret == true && mqtts_ca_cert) {
 
            mqtts_setCrt(CG_MQTTS_CLIENT_CRT, &mqtts_client_cert);
 
            mqtts_setCrt(CG_MQTTS_CLIENT_PRIVATE_KEY, &mqtts_client_key);
 
        }
 
        else {
 
            OSI_LOGI(0, "[MQTT