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  1. Undertow
  2. UNDERTOW-833

[Proxy] No failover on empty response from node

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • 2.0.0.Beta1, 1.4.4.Final
    • 1.4.0.Final
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      1. Start worker with servlet that has System.exit(1) call inside
      2. Start Eap as balancer
      3. Make request to servlet via balancer (curl BALANCER_ADDRESS:BALANCER_PORT/SERVLET)
      Expected :
      response with 50x response code
      Actual:
      No response, curl hang

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      1. Start worker with servlet that has System.exit(1) call inside 2. Start Eap as balancer 3. Make request to servlet via balancer (curl BALANCER_ADDRESS:BALANCER_PORT/SERVLET) Expected : response with 50x response code Actual: No response, curl hang

      Undertow balancer do not recognizes empty response as an error.
      Can happen when JVM got killed when handling request (System.exit())

      @Override
        public void failed(final HttpServerExchange exchange) {
            final long time = System.currentTimeMillis();
            if (tries++ < maxRetryAttempts) { 
            ...

      Undertow make curl hang.
      Apache httpd correctly recognizes empty response as error and starts fail over method. If unsuccessful, 50x is returned in response.

            sdouglas1@redhat.com Stuart Douglas
            bsikora Bogdan Sikora (Inactive)
            Jan Kašík Jan Kašík
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              Created:
              Updated:
              Resolved: