4.0.0 org.springframework.boot spring-boot-samples 1.5.20.BUILD-SNAPSHOT spring-boot-sample-websocket-undertow Spring Boot WebSocket Undertow Sample Spring Boot WebSocket Undertow Sample https://projects.spring.io/spring-boot/ Pivotal Software, Inc. https://www.spring.io ${basedir}/../.. org.springframework.boot spring-boot-starter-websocket org.springframework.boot spring-boot-starter-tomcat org.springframework.boot spring-boot-starter-undertow org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-maven-plugin