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Websockets Spring Boot Project with JS Web-Client SockJS & Stomp

Base project

• Base project:

  • Library7 base
  • POM with dependencies:
    • STOMP websocket
    • webjar for SockJS
  • Intro to websocket: AWS ApiGateway with Lmabda-DynamoDB NoSQL, slack link
    • AWS Lambda with trigger API Websokcet Gateway

• To work from base-project

  • Stomp: Using WebSocket to build an interactive web application
  • resources/static JS client
  • example:
    • Create Spring Boot + WebSocket Application using STOMP and SockJS
    • Spring Boot + WebSocket Basic Example

• WebSocket general sheme

  

New tools

• WebSocketConfig is annotated with @Configuration to indicate that it is a Spring configuration class.

• @EnableWebSocketMessageBroker enables WebSocket message handling, backed by a message broker.

• configureMessageBroker() method implements the default method in WebSocketMessageBrokerConfigurer to configure the message broker.

• registerStompEndpoints() method registers the /gs-guide-websocket endpoint, enabling SockJS fallback options so that alternate transports can be used if WebSocket is not available.

  • The SockJS client will attempt to connect to /gs-guide-websocket and use the best available transport (websocket, xhr-streaming, xhr-polling, and so on).

• WebSocket vs HTTP

  

Versions

• version 1.0 : very basic project