CC3220SF-LAUNCHXL: Fragmentation in HTTP Message Transfer from Server(CC3220SF) To client (Any other Device)

Hi,

I am trying to send the http message from CC3220SF Http Server to a Laptop based http client where CC3220SF also working as access point. I have to send huge data (approx 10kB) in response for each http request. I tried sending 2kB with 4 fragments of each size 500B (total 2kB) which is working fine and the code is as below - 

int32_t dataGetCallback(uint8_t requestIdx, uint8_t *argcCallback, uint8_t **argvCallback, SlNetAppRequest_t *netAppRequest)
{
    uint8_t *pPayload;
    uint16_t metadataLen, sendDatalen;



    char sendDataStr1[500] = "1Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so1.";
    char sendDataStr2[500] = "2Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so2.";
    char sendDataStr3[500] = "3Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so3.";
    char sendDataStr4[500] = "4Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so4.";
    char sendDataStr5[500] = "4Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so5.";

    pPayload = gPayloadBuffer;



    sl_Memcpy (pPayload, sendDataStr1, sizeof(sendDataStr1));
    pPayload += sizeof(sendDataStr1);

    /* NULL terminate the payload */
    *(pPayload) = '\0';

    sendDatalen = sizeof(sendDataStr1) + sizeof(sendDataStr2) + sizeof(sendDataStr3)+ sizeof(sendDataStr4); //+sizeof(sendDataStr5);

    metadataLen = prepareGetMetadata(0, sendDatalen, HttpContentTypeList_TextPlain);

    pthread_mutex_lock(&spiMutex);

    sl_NetAppSend (netAppRequest->Handle, metadataLen, gMetadataBuffer, (SL_NETAPP_REQUEST_RESPONSE_FLAGS_CONTINUATION | SL_NETAPP_REQUEST_RESPONSE_FLAGS_METADATA));
    sl_NetAppSend (netAppRequest->Handle,sizeof(sendDataStr1), gPayloadBuffer, SL_NETAPP_REQUEST_RESPONSE_FLAGS_CONTINUATION); /* mark as last segment */


    pPayload = gPayloadBuffer;
    sl_Memcpy (pPayload, sendDataStr2, sizeof(sendDataStr2));
    pPayload += sizeof(sendDataStr2);

    /* NULL terminate the payload */
    *(pPayload) = '\0';

    sl_NetAppSend (netAppRequest->Handle,sizeof(sendDataStr3), gPayloadBuffer, SL_NETAPP_REQUEST_RESPONSE_FLAGS_CONTINUATION); /* mark as last segment */

    pPayload = gPayloadBuffer;
    sl_Memcpy (pPayload, sendDataStr3, sizeof(sendDataStr3));
    pPayload += sizeof(sendDataStr3);

    /* NULL terminate the payload */
    *(pPayload) = '\0';

   sl_NetAppSend (netAppRequest->Handle,sizeof(sendDataStr3), gPayloadBuffer, SL_NETAPP_REQUEST_RESPONSE_FLAGS_CONTINUATION); /* mark as last segment */

    pPayload = gPayloadBuffer;
    sl_Memcpy (pPayload, sendDataStr4, sizeof(sendDataStr4));
    pPayload += sizeof(sendDataStr4);

    /* NULL terminate the payload */
    *(pPayload) = '\0';

    sl_NetAppSend (netAppRequest->Handle,sizeof(sendDataStr4), gPayloadBuffer, 0); /* mark as last segment */

    pthread_mutex_unlock(&spiMutex);

    return 0;
}

The response is as below - 

But when I try sending more fragments or/and four fragments with larger size it stuck is the request only and then show 404 error as shown below - 

int32_t dataGetCallback(uint8_t requestIdx, uint8_t *argcCallback, uint8_t **argvCallback, SlNetAppRequest_t *netAppRequest)
{
    uint8_t *pPayload;
    uint16_t metadataLen, sendDatalen;



    char sendDataStr1[500] = "1Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so1.";
    char sendDataStr2[500] = "2Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so2.";
    char sendDataStr3[500] = "3Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so3.";
    char sendDataStr4[500] = "4Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so4.";
    char sendDataStr5[500] = "4Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine learning algorithms build a model based on sample data, known as training data, in order to make predictions or decisions without being explicitly programmed to do so5.";

    pPayload = gPayloadBuffer;



    sl_Memcpy (pPayload, sendDataStr1, sizeof(sendDataStr1));
    pPayload += sizeof(sendDataStr1);

//    /* NULL terminate the payload */
    *(pPayload) = '\0';

    sendDatalen = sizeof(sendDataStr1) + sizeof(sendDataStr2) + sizeof(sendDataStr3)+ sizeof(sendDataStr4)+sizeof(sendDataStr5);

    metadataLen = prepareGetMetadata(0, sendDatalen, HttpContentTypeList_TextPlain);

    pthread_mutex_lock(&spiMutex);

    sl_NetAppSend (netAppRequest->Handle, metadataLen, gMetadataBuffer, (SL_NETAPP_REQUEST_RESPONSE_FLAGS_CONTINUATION | SL_NETAPP_REQUEST_RESPONSE_FLAGS_METADATA));
    sl_NetAppSend (netAppRequest->Handle,sizeof(sendDataStr1), gPayloadBuffer, SL_NETAPP_REQUEST_RESPONSE_FLAGS_CONTINUATION); /* mark as last segment */


    pPayload = gPayloadBuffer;
    sl_Memcpy (pPayload, sendDataStr2, sizeof(sendDataStr2));
    pPayload += sizeof(sendDataStr2);

//    /* NULL terminate the payload */
    *(pPayload) = '\0';

    sl_NetAppSend (netAppRequest->Handle,sizeof(sendDataStr3), gPayloadBuffer, SL_NETAPP_REQUEST_RESPONSE_FLAGS_CONTINUATION); /* mark as last segment */

    pPayload = gPayloadBuffer;
    sl_Memcpy (pPayload, sendDataStr3, sizeof(sendDataStr3));
    pPayload += sizeof(sendDataStr3);

//    /* NULL terminate the payload */
    *(pPayload) = '\0';

   sl_NetAppSend (netAppRequest->Handle,sizeof(sendDataStr3), gPayloadBuffer, SL_NETAPP_REQUEST_RESPONSE_FLAGS_CONTINUATION); /* mark as last segment */

    pPayload = gPayloadBuffer;
    sl_Memcpy (pPayload, sendDataStr4, sizeof(sendDataStr4));
    pPayload += sizeof(sendDataStr4);

////    /* NULL terminate the payload */
    *(pPayload) = '\0';

    sl_NetAppSend (netAppRequest->Handle,sizeof(sendDataStr4), gPayloadBuffer, SL_NETAPP_REQUEST_RESPONSE_FLAGS_CONTINUATION); /* mark as last segment */

     pPayload = gPayloadBuffer;
     sl_Memcpy (pPayload, sendDataStr5, sizeof(sendDataStr5));
     pPayload += sizeof(sendDataStr5);

 ////    /* NULL terminate the payload */
     *(pPayload) = '\0';

    sl_NetAppSend (netAppRequest->Handle,sizeof(sendDataStr5), gPayloadBuffer, 0); /* mark as last segment */

    pthread_mutex_unlock(&spiMutex);

    return 0;
}

The response of the client in Postman is shown below (same response occurred in html page) --

When the next request is placed then it shows 404 error after 30 s - 

Can anyone help, whats wrong going here?

Thanks & Regards,

Kuldeep