im.doctor/src/server/handlers/rtcSocketHandler.js

module.exports = function(io, streams) {

  io.on('connection', function(socket) {
    console.log('-- ' + socket.id + ' joined --');
      socket.emit('id', socket.id);

      socket.on('message', function (details) {
      var othersocket = io.sockets.connected[details.to];

      if (!othersocket) {
        return;
      }
        delete details.to;
        details.from = socket.id;
        othersocket.emit('message', details);
    });

      socket.on('readyToStream', function(options) {
      console.log('-- ' + socket.id + ' is ready to stream --');
      
      streams.addStream(socket.id, options.name); 
    });

      socket.on('update', function(options) {
      streams.update(socket.id, options.name);
    });

    function leave() {
      console.log('-- ' + socket.id + ' left --');
      streams.removeStream(socket.id);
    }

      socket.on('disconnect', leave);
      socket.on('leave', leave);
  });
};