How to use

setAsyncSupported

method

in

org.apache.tomcat.util.descriptor.web.FilterDef

@Override
public void deployConfig(WebApplicationContext wac, Filter... filters) {
  Assert.state(this.port != -1, "setup() was never called.");
  this.context = this.tomcatServer.addContext("", System.getProperty("java.io.tmpdir"));
  this.context.addApplicationListener(WsContextListener.class.getName());
  Tomcat.addServlet(this.context, "dispatcherServlet", new DispatcherServlet(wac)).setAsyncSupported(true);
  this.context.addServletMappingDecoded("/", "dispatcherServlet");
  for (Filter filter : filters) {
    FilterDef filterDef = new FilterDef();
    filterDef.setFilterName(filter.getClass().getName());
    filterDef.setFilter(filter);
    filterDef.setAsyncSupported("true");
    this.context.addFilterDef(filterDef);
    FilterMap filterMap = new FilterMap();
    filterMap.setFilterName(filter.getClass().getName());
    filterMap.addURLPattern("/*");
    filterMap.setDispatcher("REQUEST,FORWARD,INCLUDE,ASYNC");
    this.context.addFilterMap(filterMap);
  }
}

@Override
public void setAsyncSupported(boolean asyncSupported) {
  filterDef.setAsyncSupported(Boolean.valueOf(asyncSupported).toString());
}

@Override
public void setAsyncSupported(boolean asyncSupported) {
  filterDef.setAsyncSupported(Boolean.valueOf(asyncSupported).toString());
}

@Override
public void setAsyncSupported(boolean asyncSupported) {
  filterDef.setAsyncSupported(Boolean.valueOf(asyncSupported).toString());
}

private void configureAdditionalHeaders(Context context)
{
  FilterDef additionalHeadersFilter = new FilterDef();
  additionalHeadersFilter.setFilterName(AdditionalHeadersFilter.class.getSimpleName());
  additionalHeadersFilter.setFilterClass(AdditionalHeadersFilter.class.getName());
  additionalHeadersFilter.setAsyncSupported("true");
  additionalHeadersFilter.addInitParameter("additionalHeaders", additionalHeaders);
  context.addFilterDef(additionalHeadersFilter);
  FilterMap additionalHeadersFilterMap = new FilterMap();
  additionalHeadersFilterMap.setFilterName(AdditionalHeadersFilter.class.getSimpleName());
  additionalHeadersFilterMap.addURLPattern("/*");
  context.addFilterMap(additionalHeadersFilterMap);
}

private static boolean mergeFilter(FilterDef src, FilterDef dest,
    boolean failOnConflict) {
  if (dest.getAsyncSupported() == null) {
    dest.setAsyncSupported(src.getAsyncSupported());
  } else if (src.getAsyncSupported() != null) {
    if (failOnConflict &&

private static boolean mergeFilter(FilterDef src, FilterDef dest,
    boolean failOnConflict) {
  if (dest.getAsyncSupported() == null) {
    dest.setAsyncSupported(src.getAsyncSupported());
  } else if (src.getAsyncSupported() != null) {
    if (failOnConflict &&

  @Override
  public void addFilterMapping(final FilterMap filterMap) {
    // we need to add this one before the mapping cause of tomcat validation (ie dont make deployment fail)
    if ("CDI Conversation Filter".equals(filterMap.getFilterName()) && !cdiConversation) {
      final FilterDef conversationFilter = new FilterDef();
      conversationFilter.setAsyncSupported("true");
      conversationFilter.setDescription("CDI Conversation Filter");
      conversationFilter.setDisplayName("CDI Conversation Filter");
      conversationFilter.setFilterName("CDI Conversation Filter");
      conversationFilter.setFilterClass(WebConversationFilter.class.getName());
      addFilter(conversationFilter);
      cdiConversation = true;
    }
    super.addFilterMapping(filterMap);
  }
}

private static boolean mergeFilter(FilterDef src, FilterDef dest,
    boolean failOnConflict) {
  if (dest.getAsyncSupported() == null) {
    dest.setAsyncSupported(src.getAsyncSupported());
  } else if (src.getAsyncSupported() != null) {
    if (failOnConflict &&

private void configureResponseSecurityHeaders(Context context)
{
  FilterDef httpHeaderFilter = new FilterDef();
  httpHeaderFilter.setFilterName(HttpHeaderSecurityFilter.class.getSimpleName());
  httpHeaderFilter.setFilterClass(HttpHeaderSecurityFilter.class.getName());
  httpHeaderFilter.setAsyncSupported("true");
  // X-Frame-Options
  httpHeaderFilter.addInitParameter("antiClickJackingEnabled", "true");
  httpHeaderFilter.addInitParameter("antiClickJackingOption", antiClickJackingOption);
  if (!StringUtils.isEmpty(antiClickJackingUri))
    httpHeaderFilter.addInitParameter("antiClickJackingUri", antiClickJackingUri);
  // X-XSS-Protection
  httpHeaderFilter.addInitParameter("xssProtectionEnabled", "true");
  // X-Content-Type-Options
  httpHeaderFilter.addInitParameter("blockContentTypeSniffingEnabled", "true");
  // HTTP Strict-Transport-Security
  httpHeaderFilter.addInitParameter("hstsEnabled", "true");
  httpHeaderFilter.addInitParameter("hstsIncludeSubDomains", Boolean.toString(hstsIncludeSubdomains));
  httpHeaderFilter.addInitParameter("hstsMaxAgeSeconds", Integer.toString(hstsMaxAgeSeconds));
  context.addFilterDef(httpHeaderFilter);
  FilterMap httpHeaderFilterMap = new FilterMap();
  httpHeaderFilterMap.setFilterName(HttpHeaderSecurityFilter.class.getSimpleName());
  httpHeaderFilterMap.addURLPattern("/*");
  context.addFilterMap(httpHeaderFilterMap);
}

filterDef.setAsyncSupported("true");
filterDef.setDescription(description);
filterDef.setFilterName(description);

asyncOwbFilter.setAsyncSupported("true");
asyncOwbFilter.setDescription("OpenEJB CDI Filter - to propagate @RequestScoped in async tasks");
asyncOwbFilter.setDisplayName("OpenEJB CDI");

filterDef.setFilterName(filterName);
filterDef.setFilterClass(filterDescriptor.getClazz().getName());
filterDef.setAsyncSupported("true");
ctx.addFilterDef(filterDef);

filterDef.setFilterName(filterName);
filterDef.setFilterClass(filterDescriptor.getClazz().getName());
filterDef.setAsyncSupported("true");
ctx.addFilterDef(filterDef);

if (filterDef.getAsyncSupported() == null) {
  filterDef
      .setAsyncSupported(evp.getValue().stringifyValue());

if (filterDef.getAsyncSupported() == null) {
  filterDef
      .setAsyncSupported(evp.getValue().stringifyValue());

if (filterDef.getAsyncSupported() == null) {
  filterDef
      .setAsyncSupported(evp.getValue().stringifyValue());

filter.setAsyncSupported("false");

filter.setAsyncSupported("false");

filter.setAsyncSupported("false");