Getting started with VR-EXP

The easiest way to get started on VR-EXP is to download the pre-configured virtual machine.

1. Download and install the Virtual Box virtualisation system. https://www.virtualbox.org/

2. Download the Virtual Machine (approx. 6GB). https://drive.google.com/open?id=1QgUPzpEth5eqsfsbdX0vxV8r2EuBHt_o

3. After the download is complete, import the vrexp.ova file into your system by using the option VirtualBox -> “Import Appliance”.

4. (Optional) If you want to access the virtual machine via SSH, it will be necessary to add a Host Only interface (VirtualBox preferences). Next, run the following command: ssh [email protected] Login credentials: Username: vrexp Password: vrexp

5. Using VR-EXP:

Quick test: Usage: vrexp <video_id> <segment_count> <tilling scheme - vertical split (lines) - horizontal split (columns)>

Example (as root):

Output file: /home/vrexp/videologs/id0001.log Tile-based VR videos directory: /var/www/html/ Head track traces: /usr/local/src/viewport_traces/

(Optional) Automated execution with enforced network performance:

a. Define the experiment parameters in the following files:

• run.sh
• Topo.py
• Topology.txt

If you want to perform a simple test, the provided example files should be ok.

b. (Optional) - To enforce controlled network performance conditions, run the SDN controller: cd /usr/local/src nohup sudo ryu-manager Controller.py &

c. (Optional) - Simulate a network topology.

d. Run apache2 on the mininet CDN node:

e. (Optional) - For automated execution, use the sample script /usr/local/bin/run.sh (the script run.sh is responsible for both varying the network conditions and executing the VR-EXP)

f. For a standalone execution using mininet:

Extra: If you need to recompile VR-EXP, you will need the following libs:

pthread.h stdio.h stdlib.h unistd.h string.h curl.h errno.h stdio.h math.h

To compile the source code: