# Reconstruct ROS topics from the data received by voxl-portal?

Source: https://forum.modalai.com/topic/2594/reconstruct-ros-topics-from-the-data-received-by-voxl-portal
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2023-08-24 20:48:14 UTC by Wei Cui 0
Replies: 1 · Views: 572

## Wei Cui 0 · 2023-08-24 20:48:14 UTC

We have some issues getting ROS topics transmitted from VOXL2 to ground station reliably, but notice voxl-portal is very reliable.   I am curious if we can intercept the data from http traffic and reconstruct ros topics from the data?   Thank you.

## Reply by Moderator (ModalAI staff) · 2023-08-25 00:40:58 UTC

@Wei-Cui-0 Sure, it's just http traffic. You would have to parse on your own of course and reverse engineer from the source code [here](https://gitlab.com/voxl-public/voxl-sdk/services/voxl-portal/-/tree/master/src?ref_type=heads)

The image streams are just standard mjpeg though, so those should be easy to grab