Tell us more about working with WebRTC and calls in UrbanMedic.

In the UrbanMedic project, I worked on integrating WebRTC to enable video calls between patients and doctors. The main tasks included setting up peer-to-peer connections, handling signaling through a signaling server, and ensuring connection stability in unstable internet conditions.

For this, I used the WebRTC API to create RTCPeerConnection, manage ICE candidates, and exchange SDP messages. I also implemented logic for reconnection attempts and monitoring connection quality.

An example of simplified code for creating a connection:

const peerConnection = new RTCPeerConnection(configuration);

// Add local media stream
navigator.mediaDevices.getUserMedia({ video: true, audio: true })
  .then(stream => {
    stream.getTracks().forEach(track => peerConnection.addTrack(track, stream));
  });

// Handle incoming ICE candidates
peerConnection.onicecandidate = event => {
  if (event.candidate) {
    sendCandidateToRemote(event.candidate);
  }
};

// Create an offer
peerConnection.createOffer()
  .then(offer => peerConnection.setLocalDescription(offer))
  .then(() => sendOfferToRemote(peerConnection.localDescription));

This experience allowed me to gain a deeper understanding of WebRTC's features and ensure high-quality communication in the application.