The GameLink connection provides a persistent, publish-subscribe connection for data flow between game clients or servers and a massive live streaming audience.
A scalable server architecture, together with topic/channel communication, enable Muxy to provide real-time game data to viewers. The Muxy Cloud powers new and innovative viewer engagement interactions, with services that maintain developer-defined user and extension state, aggregate viewer input in variety of ways, and facilitate audience monetization actions.
The GameLink library provides these services through a persistent bidirectional connection to the Muxy Cloud. Hundreds of thousands of persistent connections are maintained for hours at a time. During peak events, the Authorizer/Router handles hundreds of thousands of requests per second, with 24/7 availability and low-latency responses, even under peak load.
GameLink services are available through the low-level native-code Muxy GameLink Library , and at a higher level through the MEDKit REST API and JavaScript.
GameLink Messaging and State Tracking
Extension data and messages are broadcast through an event system on top of underlying WebSocket connections.
- Game clients can subscribe to events on a named topic thread to receive updated information on audience participation.
- Clients can publish events to send information to all or a filtered subset of the live-streaming viewers.
- Clients can get and set developer-defined state values through the event system, and subscribe to state-update events.
The WebSocket protocol defines the following set of actions that a client can request.
| Action | Description |
|---|---|
authenticate | Requires a Client ID and authorization (PIN or JWT) |
subscribe, unsubscribe | Targets a named topic. Can contain developer-defined data. |
broadcast | Targets a named topic, and contains data (the message to broadcast). Can be filtered to a subset of all viewers. |
get, set state | Subscriptions target a path to a state key. The set call creates and manages developer-defined game-state key-value pairs, the get call returns the current value for a given key. |
GameLink Services
In addition, polling and transaction events are supported through special connection targets poll and transaction_completed.
| Event stream | Description |
|---|---|
| Polling and voting events | Subscriptions target the poll event stream. Create, manage, and delete audience polls, and receive real-time updates on voting results. |
| Purchasing events | Subscriptions target the transaction_completed event stream. When you offer products for sale through Twitch, respond to completed purchases of those products that are reported from Twitch. |