Added configurable cors definition

.gitignore

@@ -0,0 +1,2 @@
+.idea
+target

src/main/java/io/snyk/snyklabs/MultiroomChatApplication.java

@@ -2,13 +2,19 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import io.vavr.jackson.datatype.VavrModule;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.Bean;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
 @SpringBootApplication
 public class MultiroomChatApplication {
 
+	@Value("#{ @environment['cors.allowed_domains']}")
+	private String[] corsAllowedDomains;
+
 	public static void main(String[] args) {
 		SpringApplication.run(MultiroomChatApplication.class, args);
 	}
@@ -19,4 +25,14 @@ public ObjectMapper jacksonBuilder() {
 		return mapper.registerModule(new VavrModule());
 	}
 
+	@Bean
+	public WebMvcConfigurer corsConfigurer() {
+		return new WebMvcConfigurer() {
+			@Override
+			public void addCorsMappings(CorsRegistry registry) {
+				registry.addMapping("/ws/**").allowedOrigins(corsAllowedDomains);
+			}
+		};
+	}
+
 }

src/main/java/io/snyk/snyklabs/app/websocket/WebSocketConfig.java

@@ -1,5 +1,6 @@
 package io.snyk.snyklabs.app.websocket;
 
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.messaging.simp.config.MessageBrokerRegistry;
 import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
@@ -10,6 +11,9 @@
 @EnableWebSocketMessageBroker
 public class WebSocketConfig implements WebSocketMessageBrokerConfigurer {
 
+    @Value("#{ @environment['stomp.allowed_domains']}")
+    private String[] stompAllowedDomains;
+
     @Override
     public void configureMessageBroker(MessageBrokerRegistry config) {
         config.enableSimpleBroker("/chat");
@@ -19,8 +23,7 @@ public void configureMessageBroker(MessageBrokerRegistry config) {
     @Override
     public void registerStompEndpoints(StompEndpointRegistry registry) {
         registry.addEndpoint("/ws")
-                .setAllowedOrigins("http://localhost:3000",
-                        "chrome-extension://ggnhohnkfcpcanfekomdkjffnfcjnjam")
+                .setAllowedOrigins(stompAllowedDomains)
                 .withSockJS();
     }
 }