AWS AppSync Real-Time Support for GraphQL for Unity…

The Asset GraphQL for Unity version 1.5.2 works now with AWS AppSync realtime Websocket connections. You can now subscribe to real-time value changes via a GraphQL Websocket connection with AWS AppSync. This was not possible before, because AWS has implemented it’s own specific protocol which is a little bit different to the Apollo Websocket protocol.

Source: https://docs.aws.amazon.com/appsync/latest/devguide/system-overview-and-architecture.html
GraphQL Websocket AWS App Sync Configuration