How to join to already started session to stop/pause MediaChannel?

[Marcus-L]

In Program1:

var sender = new Sender();
var receiver = new Receiver()
{
    IPEndPoint = CreateIPEndPoint(...)
};
// Connect to the Chromecast
await sender.ConnectAsync(receiver);
var channel = sender.GetChannel<IMediaChannel>();
await sender.LaunchAsync(channel);
await channel.LoadAsync(new Media{  ContentId = "http://.../media.mp3"});

(starts playing the media.mp3 file)

Then in Program2:

var sender = new Sender();
var receiver = new Receiver()
{
    IPEndPoint = CreateIPEndPoint(...)
};
// Connect to the Chromecast
await sender.ConnectAsync(receiver);
var channel = sender.GetChannel<IMediaChannel>();
await sender.LaunchAsync(channel);
await channel.StopAsync();

Gets an exception about a null MediaSessionId. This is expected since we didn't start the session, but is there a way to stop the already playing stream?

[Marcus-L]

This is resolved with PR #7