Is it possible to process POST messages that exceed the packet pool size?

Question

When using the HTTP server function of NetXduo, is it possible to receive and process POST messages
that exceed the size of the packet pool registered by nx_packet_pool_create()?

If it is possible, could you please introduce a sample of how to do so?

Answer 1

It is possible to receive and process POST messages that exceeds the size of packet payload. Here is a piece of sample to show how to process post data.

#define BUFFER_SIZE 10240
UCHAR      buffer[BUFFER_SIZE];
static UINT server_request_callback(NX_WEB_HTTP_SERVER *server_ptr, UINT request_type, CHAR *resource, NX_PACKET *packet_ptr)
{
ULONG      offset;
ULONG      length = 0;
UINT       i = 0, actual_size;
UINT       status;

    if(request_type == NX_WEB_HTTP_SERVER_POST_REQUEST)
    {

        nx_web_http_server_content_length_get(packet_ptr, &length);
        if (length > sizeof(buffer))
        {
            error_counter++;
            return(NX_SUCCESS);
        }

        offset = 0;

        while (offset < length)
        {
            status = nx_web_http_server_content_get_extended(server_ptr, packet_ptr, total_length + offset, &buffer[offset], sizeof(pkt) - offset, &actual_size);
            offset += actual_size;

            if (actual_size == 0)
            {
                break;
            }
        }

        if (offset != length)
        {
            error_counter++;
            return(NX_SUCCESS);
        }

        /* Generate HTTP header.  */
        status = nx_web_http_server_callback_response_send_extended(server_ptr, NX_WEB_HTTP_STATUS_OK, sizeof(NX_WEB_HTTP_STATUS_OK) - 1, 
                                                                    "hello", 5, NX_NULL, 0);
        if(status)
        {
            error_counter++;
        }
    }
    else
    {
        return(NX_SUCCESS);
    }

    return(NX_WEB_HTTP_CALLBACK_COMPLETED);
}