Grails 3.0.9 WebSocket 404 Error

Question

I am trying to create a chat application using grails. I am using grails 3.0.9 and tomcat-8.0.28

Sorry for the duplicate

I read this question and this ... but this does not solve my problem.

I am already modifying javax.websocket-api so that it is:

provided 'javax.websocket:javax.websocket-api:1.0' 

but I still get this error:

Firefox : Firefox cannot establish a connection to the server at http://103.56.148.50/chat/chatEndPoint/C001D939F2564251C86E646B9127495D "

Chrome : WebSocket handshake error: Unexpected response code: 404

you can see this site ...

this is my code

 package com.akiong import grails.util.Environment import grails.util.Holders import javax.servlet.ServletContext import javax.servlet.ServletContextEvent import javax.servlet.ServletContextListener import javax.servlet.annotation.WebListener import javax.websocket.EndpointConfig import javax.websocket.OnClose import javax.websocket.OnError import javax.websocket.OnMessage import javax.websocket.OnOpen import javax.websocket.Session import javax.websocket.server.PathParam import javax.websocket.server.ServerContainer import javax.websocket.server.ServerEndpoint import com.akiong.services.ChatService import javax.websocket.EncodeException //import org.codehaus.groovy.grails.commons.ApplicationHolder as AH import javax.servlet.annotation.WebListener import java.util.concurrent.CopyOnWriteArraySet @WebListener @ServerEndpoint(value="/chat/chatEndPoint/{username}") public class ServerEndPointDemo implements ServletContextListener { private static HashMap<String, String> usersMap = new HashMap<String, String>(); private static final Set<ServerEndPointDemo> connections = new CopyOnWriteArraySet<>(); private String username private Session session @OnOpen public void handleOpen(Session session,@PathParam("username") String user){ System.out.println("-------------------------------------"); System.out.println(session.getId() + " has opened a connection"); println "user = "+user connections.add(this); this.username = user this.session = session } @OnClose public void handleClose(Session session){ System.out.println("Session " +session.getId()+" has ended"); } @OnMessage public String handleMessage(String message,Session session){ println "message = "+message println "session= "+session.getId() } @OnError public void handleError(Throwable t){ connections.remove(this); println "username = "+username removeUserInMap(session.getId(), username); } } 

this is in javascript

 var wsUri = "ws://103.56.148.50/chat/chatEndPoint/"+room; var webSocket = new WebSocket(wsUri); webSocket.onopen = function(message) {OnOpen(message);}; webSocket.onclose = function(message) {OnClose(message);}; webSocket.onerror = function(message) {OnError(message);}; webSocket.onmessage = function(message) {OnMessage(message);}; function OnOpen(message){ console.log("Open Socket"); } function OnClose(message){ console.log("Close = "+message); webSocket.close(); } function OnError(message){ console.log("ERROR = "+message); } function OnMessage(message){ webSocket.send("success"); } 

these are my dependencies in the build.gradle file

 dependencies { compile "org.springframework.boot:spring-boot-starter-logging" compile "org.springframework.boot:spring-boot-starter-actuator" compile "org.springframework.boot:spring-boot-autoconfigure" provided "org.springframework.boot:spring-boot-starter-tomcat" compile "org.grails:grails-dependencies" compile "org.grails:grails-web-boot" compile "org.grails.plugins:hibernate" compile "org.grails.plugins:cache" compile "org.hibernate:hibernate-ehcache" compile "org.grails.plugins:scaffolding" runtime "org.grails.plugins:asset-pipeline" testCompile "org.grails:grails-plugin-testing" testCompile "org.grails.plugins:geb" console "org.grails:grails-console" //-----------------------------------here i add my code------------------- compile 'org.grails.plugins:spring-security-core:3.0.0.M1' runtime 'mysql:mysql-connector-java:5.1.20' compile "org.grails.plugins:mail:2.0.0.RC2" compile 'org.grails.plugins:jms:2.0.0.M1' //http://gpc.imtqy.com/jms/snapshot/guide/introduction.html runtime 'org.apache.activemq:activemq-spring:5.11.1' provided 'javax.websocket:javax.websocket-api:1.0' } 

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I tried to run: grails prod run-app

my websocket is not working ...

but it works if I run grails run-app

is that since ServerEndPointDemo.groovy am I placed in /src/main/groovy/com.akiong/ServerEndPointDemo.groovy ?

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I get this error after removing if (Environment.current == Environment.DEVELOPMENT)

 Configuring Spring Security Core ... ... finished configuring Spring Security Core anc Environment.current = PRODUCTION Environment.DEVELOPMENT = DEVELOPMENT Environment.current = PRODUCTION Environment.DEVELOPMENT = DEVELOPMENT 26-Nov-2015 23:29:40.407 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file 26-Nov-2015 23:29:40.420 SEVERE [localhost-startStop-1] org.apache.catalina.core.StandardContext.startInternal Context [] startup failed due to previous errors 26-Nov-2015 23:29:40.769 SEVERE [localhost-startStop-1] org.apache.catalina.loader.WebappClassLoaderBase.checkThreadLocalMapForLeaks The web application [ROOT] created a ThreadLocal with key of type [org.grails.web.converters.configuration.ConvertersConfigurationHolder$2] (value [org.grai ls.web.converters.configuration.ConvertersConfigurationHolder$2@ 5ce7a180]) and a value of type [java.util.HashMap] (value [{}]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak. 26-Nov-2015 23:29:40.794 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive /root/apache-tomcat-8.0.28/webapps/ROOT.war has finished in 94,084 ms 26-Nov-2015 23:29:40.796 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-80"] 26-Nov-2015 23:29:40.802 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"] 26-Nov-2015 23:29:40.803 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 94281 ms