CODEWITHSUNDEEP
websocketjerseydropwizardatmosphere
Petter
Petter

Reputation: 4165

Accept:application/json fails with Atmosphere using Jersey with Dropwizard

I'm trying to set up some websocket enabled resources using Dropwizard and Atmosphere. I have based my setup on the code here: https://cvwjensen.wordpress.com/2014/08/02/websockets-in-dropwizard/

I use the following code to set up Atmosphere in Dropwizard:

AtmosphereServlet atmosphere = new AtmosphereServlet();
atmosphere.framework().addInitParameter(ApplicationConfig.ANNOTATION_PACKAGE, "my.classes");
atmosphere.framework().addInitParameter(ApplicationConfig.WEBSOCKET_SUPPORT, "true");
atmosphere.framework().addInitParameter(ApplicationConfig.PROPERTY_NATIVE_COMETSUPPORT, "true");
atmosphere.framework().addInitParameter(ApplicationConfig.PROPERTY_COMET_SUPPORT, "org.atmosphere.container.Jetty9AsyncSupportWithWebSocket");
ServletRegistration.Dynamic servlet = environment.servlets().addServlet("atmosphere", atmosphere);
servlet.addMapping("/APIWS/*");

And the resource I use to test it looks like this:

@GET
@Produces({"application/xml", "application/json"})
public SuspendResponse<JAXBElement<CustomerListType>> getUpdates(@Context BroadcasterFactory bf) {
    Broadcaster bc = getBroadcaster(bf, hash);
    registerBroadcaster(hash, query, apiContext.getUser());
    return new SuspendResponse.SuspendResponseBuilder<JAXBElement<CustomerListType>>()
            .broadcaster(bc)
            .build();
}

It mostly works, but if I set the header Accept: application/json in my Websocket request, it fails when the server tries to push something. Setting Accept: application/xml works fine.

I test it using the following curl command:

 curl -i -N -H "Accept: application/json"  -H "Connection: Upgrade" -H "Upgrade: websocket" -H "Sec-Websocket-Version: 13" -H "Sec-WebSocket-Key: 258E" http://localhost:8080/APIWS/customers

As soon as the server pushes some data, it fails with the following messages:

* STATE: PERFORM => DONE handle 0x80048248; line 1617 (connection #0)
* Curl_done
* Empty reply from server
* Connection #0 to host localhost left intact
curl: (52) Empty reply from server

Upvotes: 1

Views: 376

Answers (0)

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