HTTPS Monitor Health - Receive String 200 OK Not Working

Hello,

Though we receive in https response header "HTTP/1.1 200 OK", the same string used as receive in Health Monitor does not work. F5 seems to ignore any character after HTTP/1.1.

In sum:

Not Working:
                    HTTP/1.1 200 OK
                    HTTP/1.1\s200
                    HTTP/1\.(0|1)
                    HTTP/1\.(0|1) (200)
                    HTTP/1\.(0|1)\s200
                    HTTP/1.1 200 OK
                    HTTP/1.1\s200\sOK
                    200

                    Only Working:
                    ==> HTTP/1.1 
                    ==> OK||200
                    ==> <bank>

Type: https, Alias Service port 443.

VIP is using TCP profile.

Extract from openssl capture

:

    ---
    HTTP/1.1 200 OK
    Date: Wed, 06 Nov 2024 23:52:28 GMT
    Content-Type: application/json; charset=UTF-8
    Content-Length: 153
    Connection: close
    X-Krakend: Version 2.2.0
    X-Krakend-Completed: false
    X-Processing-Time: 0.000029
    X-Request-Id: e187dac8-20f7-43fd-b99a-6e4671b7f8e6
    Expires: Wed, 06 Nov 2024 22:52:28 GMT
    Cache-Control: no-cache
    X-Frame-Options: DENY
    Strict-Transport-Security: max-age=31536000; includeSubdomains; preload
    X-XSS-Protection: 1; mode=block
    Client-Verify: NONE
    X-Content-Type-Options: nosniff
    X-Permitted-Cross-Domain-Policies: none
    Feature-Policy: geolocation 'none'; camera 'none'; speaker 'none'; microphone 'none';
    Referrer-Policy: strict-origin-when-cross-origin
    Expect-CT: enforce, max-age=72000
    Content-Security-Policy: default-src 'self' blob:;base-uri 'self'; form-action 'self'; frame-ancestors 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; font-src 'self' data:; object-src 'none'; img-src 'self' data:;
    Cache-Control: no-store

closed