# Module with embedded jetty server for websockets break Ignition GAN connections

**URL:** <https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343>\
**Category:** Module Development\
**Tags:** ignition81\
**Created:** [March 14, 2024, 3:16pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343 "2024-03-14T15:16:20Z")\
**Posts on this page:** 20\
**Page:** 1

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [March 14, 2024, 3:16pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/1 "2024-03-14T15:16:20Z")

</div>

I write a module who need to start an **embedded jetty server** to reply to web sockets.  
The server run on the same ip address as Ignition but on another port (not 8060).

When the first client connect on the websocket Ignition GAN connections are suddenly disconnected (redundancy connection or connection with other gateway).

I don't understand what can interact with **Ignition websocket communication ?**

```auto
// Create a Server instance.
this.server = new Server(this.threadPool);

// connector http ?
if (this.port != -1){
	httpConnector = new ServerConnector(server);
	if (!host.isEmpty()) {
		httpConnector.setHost(host);
	}
	httpConnector.setPort(port);
	server.addConnector(httpConnector);
}

// connector https ?
if (this.httpsPort != -1){
	// The HTTP configuration object.
	HttpConfiguration httpConfig = new HttpConfiguration();
	// Add the SecureRequestCustomizer because we are using TLS.
	//httpConfig.addCustomizer(new SecureRequestCustomizer());

	SecureRequestCustomizer src = new SecureRequestCustomizer();
	src.setSniHostCheck(false);
	httpConfig.addCustomizer(src);

	// The ConnectionFactory for HTTP/1.1.
	HttpConnectionFactory http11 = new HttpConnectionFactory(httpConfig);

	// Configure the SslContextFactory with the keyStore information.
	SslContextFactory.Server sslContextFactory = new SslContextFactory.Server();

	if (sniRequired != null){
		sslContextFactory.setSniRequired(sniRequired);
	}

	if (needClientAuth != null) {
		sslContextFactory.setNeedClientAuth(needClientAuth);
	}

	if (wantClientAuth != null) {
		sslContextFactory.setWantClientAuth(wantClientAuth);
	}

	sslContextFactory.setKeyStorePath(keyStorePath);
	if (!keyStorePassword.isEmpty()){
		sslContextFactory.setKeyStorePassword(keyStorePassword);
	}

	// The ConnectionFactory for TLS.
	SslConnectionFactory tls = new SslConnectionFactory(sslContextFactory, http11.getProtocol());

	// The ServerConnector instance.
	httpsConnector = new ServerConnector(server, tls, http11);
	httpsConnector.setPort(httpsPort);

	if (!host.isEmpty()) {
		httpsConnector.setHost(host);
	}
	server.addConnector(httpsConnector);

}

// Setup the basic application "context" for this application at "/"
// This is also known as the handler tree (in jetty speak)
ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
context.setContextPath("/");

ResourceHandler resource_handler = new ResourceHandler();
resource_handler.setDirectoriesListed(true);
resource_handler.setResourceBase(pathForStaticFiles);
HandlerList handlers = new HandlerList();
handlers.setHandlers(new Handler[] { resource_handler, context});
server.setHandler(handlers);

// Configure specific websocket behavior
JettyWebSocketServletContainerInitializer.configure(context, (servletContext, wsContainer) ->
{
	// Configure default max size
	wsContainer.setMaxTextMessageSize(65535);
	// Add websockets
	wsContainer.addMapping("/signaling", new JettyEventEndpointCreator());
});

...

server.start();
server.join();

    public class JettyEventEndpointCreator implements JettyWebSocketCreator
    {
        @Override
        public Object createWebSocket(JettyServerUpgradeRequest jettyServerUpgradeRequest, JettyServerUpgradeResponse jettyServerUpgradeResponse)
        {
            return new JettyEventEndpoint();
        }
    }

    public class JettyEventEndpoint extends WebSocketAdapter
    {
        private final Logger logger = LoggerFactory.getLogger(getClass());
        private final CountDownLatch closureLatch = new CountDownLatch(1);

        @Override
        public void onWebSocketConnect(Session session)
        {
            super.onWebSocketConnect(session);
            try {
                String sessionId = String.valueOf(session.hashCode());
                logger.debug("sessionId = {} - onConnect", sessionId);
                sendMessage(session, createSignalingMessage(MESSAGE_READY, ""));
            } catch (Exception e) {
                logger.error("onConnect : Exception : ", e);
            }
        }

        @Override
        public void onWebSocketText(String message)
        {
            super.onWebSocketText(message);
			...
		}
	}

```

As soon as my client connect to th websocket I have the following message:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/d/9d3d9a8e575b01c9244191f1adc2f71d9b43a573.png)

```auto
java.lang.Exception: A connection with system name or id 'ignition-tz4-backup' already exists on the GatewayNetwork! The new connection from https://10.0.2.12:8060/system has been rejected

at com.inductiveautomation.metro.impl.protocol.websocket.MetroWebSocket.onConnect(MetroWebSocket.java:170)

at org.eclipse.jetty.websocket.common.JettyWebSocketFrameHandler.onOpen(JettyWebSocketFrameHandler.java:177)

at org.eclipse.jetty.websocket.core.internal.WebSocketCoreSession.lambda$onOpen$6(WebSocketCoreSession.java:411)

at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1469)

at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1488)

at org.eclipse.jetty.websocket.core.server.internal.AbstractHandshaker$1.handle(AbstractHandshaker.java:212)

at org.eclipse.jetty.websocket.core.internal.WebSocketCoreSession.onOpen(WebSocketCoreSession.java:411)

at org.eclipse.jetty.websocket.core.internal.WebSocketConnection.onOpen(WebSocketConnection.java:542)

at org.eclipse.jetty.io.AbstractEndPoint.upgrade(AbstractEndPoint.java:451)

at org.eclipse.jetty.server.HttpConnection.upgrade(HttpConnection.java:419)

at org.eclipse.jetty.server.HttpConnection.onCompleted(HttpConnection.java:450)

at org.eclipse.jetty.server.HttpChannel.onCompleted(HttpChannel.java:968)

at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:485)

at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)

at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314)

at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)

at org.eclipse.jetty.io.ssl.SslConnection$DecryptedEndPoint.onFillable(SslConnection.java:558)

at org.eclipse.jetty.io.ssl.SslConnection.onFillable(SslConnection.java:379)

at org.eclipse.jetty.io.ssl.SslConnection$2.succeeded(SslConnection.java:146)

at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)

at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)

at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:416)

at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:385)

at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:272)

at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.lambda$new$0(AdaptiveExecutionStrategy.java:140)

at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411)

at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969)

at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194)

at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149)

at java.base/java.lang.Thread.run(Unknown Source)

```

---

<div class="post-metadata">

**Author:** ![bmusson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/bmusson/32/87530_2.png) [@bmusson](https://forum.inductiveautomation.com/u/bmusson)\
**Post date:** [March 15, 2024, 1:04am UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/2 "2024-03-15T01:04:26Z")

</div>

You should really be registering a servlet instead of starting a whole new server.

```auto
context.getWebResourceManager().addServlet​(name, class)

```

~~Check out `org.eclipse.jetty.websocket.servlet.WebSocketServlet` for WebSocket support.~~

Edit: Advice is for the wrong version of Jetty.

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [March 15, 2024, 6:59am UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/3 "2024-03-15T06:59:32Z")

</div>

Can you please share an exemple, for adding a websocket ?  
Sure it will be better if I can avoid to start a whole new jetty server.

or perhaps someone at IA ? @paul-griffith ? can share a snipped to add some custom WebSocket without launching another jetty server.

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [March 15, 2024, 6:18pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/4 "2024-03-15T18:18:24Z")

</div>

1. Register your websocket servlet:

2. Extend `JettyWebSocketServlet`:

3. Override your creator and any other websocket initialization settings in `configure`:

4. Implement `JettyWebSocketCreator`:

5. Conditionally (by whatever authorization logic you need), create a new websocket class in `createWebSocket`:

6. Create your websocket class instance, which should be annotated with `@WebSocket` and have various annotated methods for the things you care about listening to:

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [March 15, 2024, 7:36pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/5 "2024-03-15T19:36:56Z")

</div>

In your example server will be configured to reply to : ws://localhost:8088/pws ?

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [March 15, 2024, 8:49pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/6 "2024-03-15T20:49:29Z")

</div>

`/system/pws`. Pick a different endpoint so you don't conflict with Perspective 🙂

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [March 18, 2024, 4:41pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/7 "2024-03-18T16:41:02Z")

</div>

Conditionally (by whatever authorization logic you need), create a new websocket class in `createWebSocket`:

```auto
@Override
public WebSocketChannel createWebSocket(JettyServerUpgradeRequest req, JettyServe

```

You mean ?

```auto
    private static class PerspectiveWebSocketCreator implements JettyWebSocketCreator {

        @Override
        public Object createWebSocket(JettyServerUpgradeRequest jettyServerUpgradeRequest, JettyServerUpgradeResponse jettyServerUpgradeResponse) {
               return new WebSocketChannel();
           }
    }

```

why PerspectiveWebSocketCreator must be static ?

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [March 18, 2024, 5:51pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/8 "2024-03-18T17:51:35Z")

</div>

It doesn't _have_ to be static, but in our codebase it's a nested class inside the servlet and in general it's better to make things static if they can be, to help avoid memory leaks and enforce separation of concerns.

> [@mazeyrat](#):
>
> You mean ?

Yes. But creating websockets is relatively "expensive", so you may want to put some kind of authorization on that endpoint before you actually create a real connection. Depends what your use case is and what your threat model is.

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [March 18, 2024, 6:55pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/9 "2024-03-18T18:55:38Z")

</div>

I probably miss something, when I connect the client websocket I have the following error:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/a/cad36d7dd8adf34e7a8564967c4bf439a7315e8f.png)

```auto
public class WebRTCJettyServer{

	public void init(){

		WebResourceManager web = gatewayContext.getWebResourceManager();
		web.addServlet("byes-signaling", PerspectiveWebSocketServlet.class);

	...
	}

	public class PerspectiveWebSocketServlet extends JettyWebSocketServlet {
        @Override
        protected void configure(JettyWebSocketServletFactory jettyWebSocketServletFactory) {
            jettyWebSocketServletFactory.setMaxTextMessageSize(65536);
            jettyWebSocketServletFactory.setCreator(new PerspectiveWebSocketCreator());
        }
    }

	public class PerspectiveWebSocketCreator implements JettyWebSocketCreator {

        private final Logger logger = LoggerFactory.getLogger(getClass());

        @Override
        public Object createWebSocket(JettyServerUpgradeRequest jettyServerUpgradeRequest, JettyServerUpgradeResponse jettyServerUpgradeResponse) {

            logger.info("createWebSocket");
            return new WebSocketChannel();
        }
    }

	@WebSocket
	public class WebSocketChannel{
        private final Logger logger = LoggerFactory.getLogger(getClass());

        @OnWebSocketConnect
        public void onWebSocketConnect(Session session)
        {

            try {
                sendMessage(session, createSignalingMessage(MESSAGE_READY, ""));
            } catch (Exception e) {
                logger.error("onConnect : Exception : ", e);
            }
        }
		
		...		
	
	}

```

Error detail:

```auto
java.lang.InstantiationException: com.bouyguesenergiesservices.ignition.gateway.videoviewer.WebRTCJettyServer$PerspectiveWebSocketServlet

at java.base/java.lang.Class.newInstance(Unknown Source)

at com.inductiveautomation.ignition.gateway.bootstrap.MapServlet.service(MapServlet.java:74)

at org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1410)

at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764)

at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1665)

at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:527)

at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)

at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:578)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)

at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)

at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1570)

at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)

at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1384)

at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)

at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:484)

at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1543)

at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)

at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1306)

at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)

at com.inductiveautomation.catapult.handlers.RemoteHostNameLookupHandler.handle(RemoteHostNameLookupHandler.java:121)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)

at org.eclipse.jetty.rewrite.handler.RewriteHandler.handle(RewriteHandler.java:301)

at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51)

at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:141)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)

at org.eclipse.jetty.server.Server.handle(Server.java:563)

at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:505)

at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:762)

at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:497)

at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)

at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:314)

at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)

at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)

at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:416)

at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:385)

at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:272)

at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.lambda$new$0(AdaptiveExecutionStrategy.java:140)

at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:411)

at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:969)

at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1194)

at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1149)

at java.base/java.lang.Thread.run(Unknown Source)

Caused by: java.lang.NoSuchMethodException: com.bouyguesenergiesservices.ignition.gateway.videoviewer.WebRTCJettyServer$PerspectiveWebSocketServlet.()

at java.base/java.lang.Class.getConstructor0(Unknown Source)

```

---

<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [March 18, 2024, 7:02pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/10 "2024-03-18T19:02:46Z")

</div>

You _ **must** _ have a no-args constructor on your servlet class. That is what will be created by jetty to handle your endpoints. You _ **must** _ use static methods elsewhere for your servlet to get its initialization data.

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [March 18, 2024, 7:37pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/11 "2024-03-18T19:37:08Z")

</div>

I have the same error with adding a no-arg constructor:

```auto
    public class PerspectiveWebSocketServlet extends JettyWebSocketServlet {

        public PerspectiveWebSocketServlet() {
        }

        @Override
        protected void configure(JettyWebSocketServletFactory jettyWebSocketServletFactory) {
            jettyWebSocketServletFactory.setMaxTextMessageSize(65536);
            jettyWebSocketServletFactory.setCreator(new PerspectiveWebSocketCreator());
        }
    }

```

What do you mean by **"its initialization data"**?

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [March 18, 2024, 7:38pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/12 "2024-03-18T19:38:31Z")

</div>

You're not explicitly marking your inner class static, so it requires an implicit reference to the outer class to be constructed. Make it static and you should be able to construct it.

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [March 18, 2024, 9:41pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/13 "2024-03-18T21:41:26Z")

</div>

Yes it works better with static. Thanks again ! 👍  
Launching another Jetty inside the same JVM seems was the conflict source.  
I need to refactor portion of my initial code and run more test to confirm that I have no remaining conflicts with GAN ad redundancy websockets.

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [March 19, 2024, 10:33am UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/14 "2024-03-19T10:33:57Z")

</div>

My code doesn't launch anymore a separate Jetty server.

It's fine for **websockets** , but I need to expose few static **HTML and Javascript files**

For HTML it's ok with: (in the module Gateway Hook)

```auto

    @Override
    public Optional<String> getMountPathAlias(){
        return Optional.of(MOUNT_PATH_ALIAS);
    }

	@Override
	public void mountRouteHandlers(RouteGroup routes){

	routes.newRoute("/index.html")
				  .handler((req, res) -> getMountedData(req, res, "index.html"))
				  .type(RouteGroup.TYPE_TEXT_HTML)
				  .mount();

        routes.newRoute("/test.js")
                .handler((req, res) -> getMountedData(req, res, "test.js"))
                .type(RouteGroup.TYPE_PLAIN_TEXT)
                .mount();

```

But for JS **RouteGroup.TYPE\_PLAIN\_TEXT** generate the error in the browser:

```auto
Refused to execute script from 'http://127.0.0.1:8088/data/test.js' because its MIME type ('text/plain') is not executable, and strict MIME type checking is enabled.

```

**RouteGroup type have no type for JS MIME**

![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/4/b/4bdb0f7e156519c0fe0b0d7785360f48367a3f20.png)

**@paul-griffith, @pturmel Is there a way to expose JS file thru the SDK with ignition embedded Jetty ???otherwise than copying the JS files in:**

```auto
C:\Program Files\Inductive Automation\Ignition\webserver\webapps\main

```

As a site note: I don't have webdev module.

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [March 19, 2024, 1:23pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/15 "2024-03-19T13:23:10Z")

</div>

You don't have to use one of the constants in RouteGroup. You can just use any string you want as the content type.

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [March 19, 2024, 1:50pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/16 "2024-03-19T13:50:07Z")

</div>

Thanks again 🎯

```auto
        routes.newRoute("/test.js")
                .handler((req, res) -> getMountedData(req, res, "videoplayer.js"))
                .type("text/javascript")
                .mount();

```

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [June 6, 2024, 3:13pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/17 "2024-06-06T15:13:50Z")

</div>

is there a way to unmount or delete a route previously added ?  
For example if we use routes.newRoute to expose temporary files in Ignition webserver.

If we keep a reference to routes, can we add some newRoute after the gateway hook is executed ?

---

<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [June 6, 2024, 3:33pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/18 "2024-06-06T15:33:26Z")

</div>

I don't know, but why can you not add another servlet for that purpose, and handle the incoming URLs manually?

---

<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [June 6, 2024, 4:12pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/19 "2024-06-06T16:12:28Z")

</div>

There's no way to dynamically add routes, but couldn't you just add a route at the "root" and handle the remaining path programmatically? That is, throw a 404 or whatever if it doesn't exist per your business logic.

---

<div class="post-metadata">

**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\
**Post date:** [June 6, 2024, 8:24pm UTC](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343/20 "2024-06-06T20:24:48Z")

</div>

Yes that seems to be the solution, the only issue I see, is if we need to share data with several mime type ?

[Next page](https://forum.inductiveautomation.com/t/module-with-embedded-jetty-server-for-websockets-break-ignition-gan-connections/87343.md?page=2)