CC3200-LAUNCHXL: CC3200 HTTPS client Connection to server failed. error(-102)

Hello guys,

I used the CC3200 example "http_client_demo"  to do as a "https client" . I downloaded secure_http_client_demo.7z. Then i added file main.c into http_client demo project. I have generated the certificate as per the document and flashed it . The time is set to the current time.But An error occurred"Connection to server failed.error(-102)".

The ConnectToHTTPServer  function  code：

static int ConnectToHTTPServer(HTTPCli_Handle httpClient)
{
    long lRetVal = -1;
    struct sockaddr_in addr;

#ifdef USE_PROXY
    struct sockaddr_in paddr;
    paddr.sin_family = AF_INET;
    paddr.sin_port = htons(PROXY_PORT);
    paddr.sin_addr.s_addr = sl_Htonl(PROXY_IP);
    HTTPCli_setProxy((struct sockaddr *)&paddr);
#endif

#ifdef SECURE
    SlDateTime_t dt;

    /* Set current Date to validate certificate */
    dt.sl_tm_day = 3;
    dt.sl_tm_mon = 6;
    dt.sl_tm_year = 2017;
    dt.sl_tm_hour = 9;
    dt.sl_tm_min = 51;
    dt.sl_tm_sec = 0;
    sl_DevSet(SL_DEVICE_GENERAL_CONFIGURATION, SL_DEVICE_GENERAL_CONFIGURATION_DATE_TIME, sizeof(SlDateTime_t), (unsigned char *)(&dt));
#endif

    /* Resolve HOST NAME/IP */
    lRetVal = sl_NetAppDnsGetHostByName((signed char *)HOST_NAME,
                                          strlen((const char *)HOST_NAME),
                                          &g_ulDestinationIP,SL_AF_INET);
    if(lRetVal < 0)
    {
        ASSERT_ON_ERROR(GET_HOST_IP_FAILED);
    }

#ifdef SECURE
#define SL_SSL_CA_CERT	"/cert/129.der"
    struct HTTPCli_SecureParams sparams;
    /* Set secure TLS connection  */
    /* Security parameters */
    sparams.method.secureMethod = SL_SO_SEC_METHOD_TLSV1_2;
    sparams.mask.secureMask =SL_SEC_MASK_TLS_RSA_WITH_AES_256_CBC_SHA256 ; //SL_SEC_MASK_TLS_RSA_WITH_AES_256_CBC_SHA;
    strncpy(sparams.cafile, SL_SSL_CA_CERT, sizeof(SL_SSL_CA_CERT));
    sparams.privkey[0] = 0;
    sparams.cert[0] = 0;
    sparams.dhkey[0] = 0;
    HTTPCli_setSecureParams(&sparams);
#endif
    /* Set up the input parameters for HTTP Connection */
    addr.sin_family = AF_INET;
    addr.sin_port = htons(HOST_PORT);
    addr.sin_addr.s_addr = sl_Htonl(g_ulDestinationIP);

    /* Testing HTTPCli open call: handle, address params only */
    HTTPCli_construct(httpClient);
#ifdef SECURE
    lRetVal = HTTPCli_connect(httpClient, (struct sockaddr *)&addr, HTTPCli_TYPE_TLS, NULL);
#else
    lRetVal = HTTPCli_connect(httpClient, (struct sockaddr *)&addr, 0, NULL);
#endif
    if (lRetVal < 0)
    {
        UART_PRINT("Connection to server failed. error(%d)\n\r", lRetVal);
        ASSERT_ON_ERROR(SERVER_CONNECTION_FAILED);
    }    
    else
    {
        UART_PRINT("Connection to server created successfully\r\n");
    }

    return 0;
}

Host name and the port：

#define HOST_NAME  "www.howsmyssl.com" //"<host name>"

#define HOST_PORT  44 3

I programed the certificate into the targert device by UniFlash.

 the version information is CC3200SDK_1.3.0 

When i run the project in IAR,it always returned "Connection to server failed. error(-102)" in this code " lRetVal = HTTPCli_connect(httpClient, (struct sockaddr *)&addr, HTTPCli_TYPE_TLS, NULL)"

who can help me?Grateful！

Regards,

Guojing PAN.