## Connect

Attach to an existing Live session. Do not send session.start again.

**WebSocket** `wss://api.openai.com/v1/live/sessions/{session_id}/attach`

### Example

```ruby
require "openai"
require "async"

# Use an eligible existing Live session ID owned by your project.
client = OpenAI::Client.new
Sync do |task|
  # Stop waiting if the peer never sends the expected events.
  task.with_timeout(60) do
    # This block releases only the observer, not the owner's session.
    client.live.sideband.connect('sess_123') do |connection|
      complete = false
      connection.each do |event|
        case event
        when OpenAI::Live::ErrorEvent
          raise "Live reported a session error."
        when OpenAI::Live::SessionUsageUpdatedEvent
          puts "Current cumulative usage: #{event.usage}"
          complete = true
          break
        when OpenAI::Live::SessionClosedEvent
          puts "Final usage: #{event.usage}"
          complete = true
          break
        end
      end
      raise "Observer disconnected before a usage update or session.closed" unless complete
    end
  end
end
```