haproxy 1.8 or 1.9 URI always responds with HTTP v1.0

Solution In Progress - Updated -

Issue

  • HAProxy monitor-uri with HTTP/1.1 as haproxy is always responding back with HTTP/1.0 which some of our monitoring tools like Thousand Eyes are not honoring and rejecting the response with SSL READ error.

Environment

  • haproxy 1.8 or 1.9
    • haproxy-1.8.27-5.el8.x86_64

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