Bandwidth control using https communication isn't effective in RHEL8(squid-4) and RHEL9.0(squid-5.2)

Issue

We set the delay_parameters option and verified downloading the web server's files from the web client using https communication.

We show the results of our verification below.

• When downloading the web server's files from the web client using https communication:
  We executed the ifstat command on the squid server and checked the amount of data received from the squid server to the web client using http communication, and the amount of data exceeded the limit.*1

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     Web Server   192.168.122.24
     squid Server 192.168.122.14(ens7) 192.168.122.14(ens8)  
     client       192.168.122.12

     - squid.conf (extract)
      acl rhel79-12 src 192.168.122.12    
      acl rhel84-24 dst 192.168.122.24
      acl SSL_ports port 443
      #acl Safe_ports port 80       # http
      acl Safe_ports port 443       # https
      delay_pools 1
      delay_class 1 1
      delay_access 1 allow rhel84-24
      delay_access 1 deny all
      delay_parameters 1 10240/10240  *1

     - client operation commands
      # curl -O https://192.168.122.24:443/bash-4.4.19-14.el8.src.rpm --proxy 192.168.122.14:3128

     - ifstat command (extract) squid server
      Interface        RX Pkts/Rate    TX Pkts/Rate    RX Data/Rate    TX Data/Rate
                       RX Errs/Drop    TX Errs/Drop    RX Over/Rate    TX Coll/Rate
      ens7                 183 0           545 0         10055 0      *1 3613K 0
                             0 0             0 0             0 0          4099 0
      ens8                2488 0           208 0         3701K 0         14171 0
                             0 0             0 0             0 0          1040 0
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