I'm (still) trying to migrate an application from JBoss 7,.2.0.Final to WildFly 8.2.0.Final, and I find that some cookies are not written to the servlet response. I've tracked it down to io.undertow.servlet.spec.HttpServletResponseImpl.addCookie().
@Override
public void addCookie(final Cookie cookie) {
if (insideInclude) {
return;
}
final ServletCookieAdaptor servletCookieAdaptor = new ServletCookieAdaptor(cookie);
if (cookie.getVersion() == 0) {
servletCookieAdaptor.setVersion(servletContext.getDeployment().getDeploymentInfo().getDefaultCookieVersion());
}
exchange.setResponseCookie(servletCookieAdaptor);
}
Apparently the insideCookie flag has been set to true at the point we're calling HttpServletResponse.addCookie(), so WildFly/Undertow just quietly throws it away and leaves me scratching my head trying to figure out what went wrong.
When I search back up the call stack I see that our servlet is including a JSP page in its response like this
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(page);
dispatcher.include(state.getRequest(), state.getResponse());
So, it makes sense that insideInclude is true, since the code that's trying to set the cookie is being called from inside RequestDispatcher.include(), but I don't understand why WildFly/Undertow just arbitrarily throws it away.
