F5 | 874877

Symptoms ... When a recv string is used with an HTTP/HTTP2/HTTPS/TCP monitor, the HTTP status code is collected and in the event of failure, the most recent value (from before the failure) is retrieved and used as part of the log output. ... This can result in a message that is misleading. ... Impact ... Generates a misleading log messages, difficulty in identifying the actual cause of the monitor failure. ... This occurs because the system stores the 'last error' string for these monitors. ... This can be misleading, especially when a receive string is used. ... Following is an example: -- A BIG-IP system is monitoring an HTTP server that is returning proper data (i.e., matching the receive string). -- The HTTP server goes down. ... Now the BIG-IP system will have a last error string of 'No successful responses received before deadline' or 'Unable to connect'. -- The HTTP server goes back up and works for a while. -- For some reason, the HTTP server's responses no longer match the ...