int cutilsTcpServerClientArrResize(cutilsTcpServerClientArr *arr, size_t size){
    if(size <= arr->capacity){
        arr->size = size;
        return CUTILS_OK;
    }
    TYPE *tmp = realloc(arr->data, sizeof(cutilsTcpServerClient)*size);
    if(tmp == NULL){
        return CUTILS_NOMEM;
    }
    arr->data = tmp;
    arr->size = size;
    arr->capacity = size;
    return CUTILS_OK;
}

int cutilsTcpServerClientArrPushBack(cutilsTcpServerClientArr *arr, cutilsTcpServerClient x){
    int err = cutilsTcpServerClientArrResize(arr, arr->size+1);
    if(err != CUTILS_OK){
        return err;
    }

    arr->data[arr->size] = x;
    arr->size++;
    return CUTILS_OK;
}