Connectivity test failed for config 'WebSockets_Config'. on Web Sockets connector deployment on Cloudhub

Question

I created an app with below global configuration:

<websocket:config name="WebSockets_Config" doc:name="WebSockets Config" doc:id="c252cefb-a74d-4f1c-a5f2-fd589ac692ed" >
    <websocket:connection >
        <websocket:server-settings listenerConfig="HTTP_Listener_config" idleSocketTimeout="60"/>
    </websocket:connection>
</websocket:config>
<http:listener-config name="HTTP_Listener_config" doc:name="HTTP Listener config" doc:id="d5e2b3f6-7485-474a-924d-71550194c0e7" basePath="/api">
    <http:listener-connection host="0.0.0.0" port="${http.port}" />
</http:listener-config>

With http.port = 8081

However, on Cloudhud logs I see an error:

Connectivity test failed for config 'WebSockets_Config'. Application deployment will continue. Error was: Server on host 0.0.0.0 and port 8081 is stopped.
org.mule.runtime.api.connection.ConnectionException: Server stopped.
    at com.mulesoft.connectors.ws.internal.connection.FluxCapacitorProvider.validate(FluxCapacitorProvider.java:167)
    at com.mulesoft.connectors.ws.internal.connection.FluxCapacitorProvider.validate(FluxCapacitorProvider.java:60)
    

When I try to connect to it I get

Error during WebSocket handshake: Unexpected response code: 403
    

How can I fix this problem? I couldn't find the root problem.

Answer 1

That it works locally seems to indicate that the issue is infrastructure related. The URL that you are using doesn't go through a Dedicated Load Balancer as the documentation recommends to use the WebSockets connector in CloudHub 1.0. The documentation says to use port 8091 which is expected when using a Dedicated Load Balancer.