What does the error message "all endpoints are disconnected" mean from mod_jk

Does anyone know the meaning of the info message "all endpoints are disconnected, detected by connect check (1), cping (0), send (0)"

This occurs with some regularity in my mod_开发者_JAVA技巧jk log, but I can't find information about whether this is a problem, or just something to ignore.

This means that tomcat has shut down the socket due to the soTimeout parameter of the AJP connector. mod_jk is going to reconnect next, therefore this is merely an [info] message. If the reconnect fails, an [error] will be logged. So this is entirely harmless.