How to connect securely using HTTP Client Library

I would like to use the HTTP Client Library to connect securely using TLS.

I cannot find or work out the required steps to get this to function, I always get a -102 error returned when I call HTTPCli_connect

I know all my settings are correct, the certificate is installed and so on, as everything is fine when I use the ssl example (which does not use the HTTP Client Library)

I followed the details provided in the PDF for the http_client_demo example for using TLS, but I still get the -102 error.

What are the steps to get TLS working with the HTTP Client Library?

Here is my code

//*****************************************************************************
//
//! Function to connect to HTTP server
//!
//! \param  httpClient - Pointer to HTTP Client instance
//!
//! \return Error-code or SUCCESS
//!
//*****************************************************************************
static int ConnectToHTTPServer(HTTPCli_Handle httpClient)
{
    long lRetVal = -1;
    struct sockaddr_in addr;
    struct HTTPCli_SecureParams sparams;
  
#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

    SlDateTime_t dt;

    /* Set current Date to validate certificate */
    dt.sl_tm_day = 28;
    dt.sl_tm_mon = 6;
    dt.sl_tm_year = 2015;
    dt.sl_tm_hour = 4;
    dt.sl_tm_min = 45;
    dt.sl_tm_sec = 0;
    sl_DevSet(SL_DEVICE_GENERAL_CONFIGURATION, SL_DEVICE_GENERAL_CONFIGURATION_DATE_TIME, sizeof(SlDateTime_t), (unsigned char *)(&dt));

    /* 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);
    }

    /* Set secure TLS connection  */
    /* Security parameters */
    sparams.method.secureMethod = SL_SO_SEC_METHOD_TLSV1_2;
    sparams.mask.secureMask = SL_SEC_MASK_SSL_RSA_WITH_RC4_128_SHA; //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);

    /* 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);

    HTTPCli_construct(httpClient);

    lRetVal = HTTPCli_connect(httpClient, (struct sockaddr *)&addr, HTTPCli_TYPE_TLS, NULL);
    if(lRetVal < 0)
    {
        UART_PRINT("Failed to connect securely to server. error(%d)\n\r", lRetVal);
        return lRetVal;
        //ASSERT_ON_ERROR(SERVER_CONNECTION_FAILED);
    }
    else
    {
        UART_PRINT("Connection to server created successfully\r\n");
    }

    return 0;
}