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apachetomcatnioajp

org.apache.coyote.ajp.AjpMessage.processHeader Invalid message received with signature 18245

Occasionally we see the following in the Tomcat logs:

SEVERE [ajp-nio-8009-exec-3] org.apache.coyote.ajp.AjpMessage.processHeader Invalid message received with signature 18245

Any thoughts on what could be causing this?

Solution

  • it means that one of internal process has tried calling that port with http protocol. In my case, you got this issue when I use "wget"; it's not support a ajp protocol.

    Either you listen to your port on http protocol, or you open another http port where your internal process should call.