Getting UT010026 error when try to use async request on JBoss EAP 7

Solution Verified - Updated -


In a environment that has the following architecture:

client -> (https) Apache httpd with mod_cluster -> (https) JBoss EAP 7.2.0 Undertow

When the io.undertow.servlet.spec.HttpServletRequestImpl.startAsync method is invoked by a servlet, the following exception is thrown:

java.lang.IllegalStateException: UT010026: Async is not supported for this request, as not all filters or Servlets were marked as supporting async
        at io.undertow.servlet.spec.HttpServletRequestImpl.startAsync(
        at javax.servlet.ServletRequestWrapper.startAsync(
        ... 52 more

What parameter has to be set in the httpd virtual host configuration with mod_cluster to support async requests?


  • Red Hat JBoss Enterprise Application Platform (EAP)
    • 6.x
    • 7.x
  • Apache HTTPD
    • 2.4
  • mod_cluster
    • 1.3.x

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