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Absinthe provides the absinthe_phoenix library, which allows a Phoenix application to register a new socket to receive GraphQL messages over a Phoenix channel. The downside of this is that clients of this must connect to the websocket with a Phoenix-specific client library.
The GraphQL over WebSocket Protocol is an attempt to define a generic transport protocol with few or no dependencies that is simple to implement.
This library implements a socket that can be use'd by a module and added to a Phoenix endpoint.