CORSAtmosphereInterceptor.java

package org.atmosphere.interceptors;
 
import org.atmosphere.cpr.*;
 
public class CORSAtmosphereInterceptor implements AtmosphereInterceptor {
    @Override
    public void configure(AtmosphereConfig config) {
    }
 
    @Override
    public Action inspect(AtmosphereResource r) {
 
        AtmosphereRequest req = r.getRequest();
        AtmosphereResponse res = r.getResponse();
 
        if(req.getHeader("Origin") != null){
            res.addHeader("Access-Control-Allow-Origin", "*");
            res.addHeader("Access-Control-Expose-Headers", "X-Cache-Date, X-Atmosphere-tracking-id");
        }
 
        if("OPTIONS".equals(req.getMethod())){
            res.addHeader("Access-Control-Allow-Methods", "OPTIONS, GET, POST");
            res.addHeader("Access-Control-Allow-Headers", "Origin, Content-Type, X-Atmosphere-Framework, X-Cache-Date, X-Atmosphere-tracking-id, X-Atmosphere-Transport");
            res.addHeader("Access-Control-Max-Age", "-1");
        }
 
        return Action.CONTINUE;
    }
 
    @Override
    public void postInspect(AtmosphereResource r) {
    }
}

Atmosphere CORS Enabler Interceptor