/// <summary>
/// Disconnect from FreeSwitch mod_event_socket
/// </summary>
/// <returns></returns>
/// <summary>
/// Wait for all messages to be sent and close the connection
/// </summary>
/// <returns>Async task</returns>
public async Task CloseAsync()
{
await ShutdownGracefully();
await _channel.CloseAsync();
_authenticated = false;
_channel = null;
}
/// <summary>
/// Wait for all messages to be sent and close the connection
/// </summary>
/// <returns>Async task</returns>
public async Task CloseAsync()
{
await _channel.CloseAsync();
_channel = null;
}