feat: socket config 추가(#87)

be/build.gradle

@@ -57,6 +57,9 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-websocket'
     implementation 'org.webjars:stomp-websocket:2.3.3-1'
     implementation 'org.webjars:sockjs-client:1.1.2'
+
+    // redis
+    implementation 'org.springframework.boot:spring-boot-starter-data-redis'
 }
 
 tasks.named('bootBuildImage') {

be/src/main/java/yeonba/be/config/WebSocketConfig.java

@@ -0,0 +1,30 @@
+package yeonba.be.config;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.messaging.simp.config.MessageBrokerRegistry;
+import org.springframework.web.socket.config.annotation.EnableWebSocket;
+import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
+import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
+import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;
+
+@Configuration
+@EnableWebSocket
+@RequiredArgsConstructor
+@EnableWebSocketMessageBroker
+public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
+
+    @Override
+    public void configureMessageBroker(MessageBrokerRegistry config) {
+
+        config.enableSimpleBroker("/chat/sub");
+        config.setApplicationDestinationPrefixes("/chat/pub");
+    }
+
+    @Override
+    public void registerStompEndpoints(StompEndpointRegistry registry) {
+
+        registry.addEndpoint("/chat")
+            .withSockJS();
+    }
+}