Saqib Ali Saqib Ali - 1 month ago 50
Apache Configuration Question

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?

Answer

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.