Course Outline
Media Device Handling for Government
1. Browser Permissions with navigator.permissions
- Accessing hardware:
- Webcam
- Microphone
- Optional permissions:
- Geolocation
- Notifications
- Clipboard (read/write)
- Permission querying and status
- Limitations and browser compatibility
2. Reading Media Devices with navigator.mediaDevices
- Device enumeration
- Handling device changes
3. Cross-browser Compatibility
- API usage:
- navigator.permissions.query()
- navigator.mediaDevices.enumerateDevices()
- getUserMedia()
- Safari fallback strategy
4. Media Device Handling for Government
- Device initialization: getUserMedia(constraints)
- Media device constraints
- Starting and stopping media streams
- Handling device changes
5. Recording Devices with MediaRecorder
- Start/stop streaming and recording
- Download .webm file
- Real-time waveform preview
Optional Add-ons:
- Save in .wav format using ScriptProcessorNode
- Audio FFT spectrum visualization
- Volume bar in decibels
- Voice recognition with webkitSpeechRecognition
Peer Connection for Government
1. Signaling Servers
- Bidirectional channel options:
- WebSocket
- Socket.io
- SignalR
- Message structure
- Simplified WebRTC client
- Full signaling flow
2. Video Chat via WebRTC for Government
- Architecture: Node.js + ws
- WebRTC client: RTCPeerConnection
- Local E2E testing
Optional Features:
- Call hang-up (close connection, stop media)
- Group calling (multi-user rooms)
- Token-based simple authentication
3. Screen Sharing for Government
- Use of getDisplayMedia()
- Architecture and options
4. Session Description Protocol (SDP)
- Introduction and contents
- Reading and interpreting SDP
- Codecs:
- Audio & Video
- Negotiation and control
- Fallback strategies
5. WebRTC Statistics with getStats()
- Types of statistics
- How to interpret stats
- Live bitrate/jitter charts
- Quality adaptation strategies
6. All Topics Include:
- Hands-on Use Case
Requirements
Testimonials (5)
I liked how Gunnar wrote pretty much all of the code on the fly as we were going through, but that there was plenty of pre-prepared material on the google drive that I can refer to after the training. The code Gunnar wrote based on the sample data I provided beforehand was also extremely useful and also made the training relevant to our own datasets.
Ranvir - Schroders Personal Wealth
Course - Visual Studio Code
Multiple examples for each module and great knowledge of the trainer.
Sebastian - BRD
Course - Secure Developer Java (Inc OWASP)
Module3 Applications Attacks and Exploits, XSS, SQL injection Module4 Servers Attacks and Exploits, DOS, BOF
Tshifhiwa - Vodacom
Course - How to Write Secure Code
Real-life examples.
Kristoffer Opdahl - Buypass AS
Course - Web Security with the OWASP Testing Framework
The trainer's subject knowledge was excellent, and the way the sessions were set out so that the audience could follow along with the demonstrations really helped to cement that knowledge, compared to just sitting and listening.
