Loop/QA/WebRTC Lab

Setting Up Your Own WebRTC Sunny Day Environment

Purpose

QA has a "Sunny Day" minimal network environment stood up for automated testing of WebRTC.

Location and Machines

The Sunny Day environment is in the MTV QA Lab within the MTV network environment, and comprises the following machines:

• WebRTC server
  • Runs a Steeplechase instance to split WebRTC session tests between two clients
  • Runs other signaling servers (TURN, STUN, ntpd, etc.) needed to enable the session.
  • First WebRTC test client
  • Second WebRTC test client

These systems all have static IPs with DNS entries. These URLs will not work outside the MTV internal network. From outside the office, you may access them via the VPN. Both clients use internal video cards and (TODO) USB sound hardware.

Daemons

Signaling Server

• Does basic call setup between the two clients
• Runs on the server instance

1. Install build command and runtime dependencies: apt-get install nodejs npm
2. Clone from https://github.com/luser/simplesignalling
3. Install socket.io for Node: npm install socket.io@0.9.6
   • Note: simplesignalling server does not work with socket.io >=1.0
   • Note: On Ubuntu LTS right after the heartbleed attack npm refused to work, the following commands allowed the installation BUT degrades the security of your system
   1. npm cache clean -f
   2. npm install -g n
   3. npm set ca null
   • I could not get that to work; I did:
   1. sudo npm config set registry http://registry.npmjs.org/
   • Note that this command takes security out of the loop entirely.
4. Invoke with node ./server.js in base directory

• The init script /etc/init.d/simplesignaling allows to start/stop and restart the process

Negatus (SUT Agent)

• Listens for steeplechase to receive binaries and invoke test commands
• Runs on each client instance

Linux

1. Install required commands and build dependencies: apt-get install git g++ libnspr4-dev
2. Clone Git repository from https://github.com/mozilla/Negatus
3. Build with make -f Makefile.linux
4. Invoke with ./agent in base directory post-build

The init script /etc/init.d/negatus allows to start/stop and restart the daemon

Mac

1. Install Xcode and command-line tools.
2. Build nspr.
   1. Download latest from https://ftp.mozilla.org/pub/mozilla.org/nspr/releases/
   2. Unpack the archive.
   3. From the top-level, do the following commands:
      1. configure
      2. make
      3. sudo make install
3. Clone Git repository from https://github.com/sydvicious/Negatus.
4. Build with make -f Makefile.macosx
5. Invoke with ./agent in base directory post-build. Note that if you have a firewall turned on, the Mac will put up an alert asking you to let it open ports. I have not done much investigation, but it appears that Negatus would need to be a signed app for that not to happen. I am going to run it in VMs with no firewalls turned on, at least initially.

Tests

Firefox Binary and Tests

• Stage on server instance -- will be distributed to clients by steeplechase

1. Download from http://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/ (or alternate location as desired)
2. Download firefox-*.en-US.linux-x86_64.tar.bz2
3. Download firefox-*.en-US.linux-x86_64.tests.zip
4. Untar/extract both into separate directories

Steeplechase

• Execute on server instance

1. Install require binaries and dependencies: apt-get install git python-setuptools
2. Clone Git repository from https://github.com/mozilla/steeplechase/
3. From within the steeplechase directory, install dependencies with sudo python setup.py install
   
4. Invoke runsteeplechase.py with appropriate command line options.

Example:

(Assumes you cloned steeplechase into ~/src, extracted Firefox into ~/bin/firefox, and extracted tests into ~/tests)

/usr/bin/env python ~/src/steeplechase/steeplechase/runsteeplechase.py --binary ~/bin/firefox/firefox --specialpowers-path ~/tests/steeplechase/specialpowers --prefs-file ~/tests/steeplechase/prefs_general.js --signalling-server 'http://10.252.73.224:8080/' --html-manifest ~/tests/steeplechase/tests/steeplechase.ini --host1 10.252.73.222:20701 --host2 10.252.73.223:20701

Change IP addresses/hostnames as appropriate for your network.

Running in VMs

VM Setup

You can use 3 VMs of Ubuntu 14.04 Desktop with 2 cores, 2GB RAM, 20GB disk space. Install using above instructions. Then, invoke the tests using the command line given, with webrtc-steeplechase, webrtc-slave1, and webrtc-slave2 as the host names.

Build Environment

To fix and develop tests yourself please follow these instructions on how to setup your build environment locally https://wiki.mozilla.org/QA/Automation/Projects/WebRTC