Use IPv6 addresses instead of hostname

SiteTests/FroNtier/tests/CE-cms-squid

@@ -2,7 +2,7 @@
 
 shopt -s expand_aliases
 
-SCRIPT_REVISION="2020-07-17"
+SCRIPT_REVISION="2020-11-26"
 MAINTAINERS="Dave Dykstra and Edita Kizinevic"
 SCRIPT_NAME=`basename "$0"`
 
@@ -132,9 +132,25 @@ echo
 cd $CMSREL/src
 cmsenv
 
+# Use IPv6 if frontier client version is 2.9 or greater
+frontier_client=`echo $FRONTIER_CLIENT | sed 's/.*frontier_client\///'`
+frontier_major_version=${frontier_client%%.*}
+frontier_minor_version=${frontier_client#*.}
+frontier_minor_version=${frontier_minor_version%%.*}
+use_IPv6=false
+re='^[0-9]+$'
+if [[ $frontier_major_version =~ $re ]] && [[ $frontier_minor_version =~ $re ]]; then
+    if [ "$frontier_major_version" -gt "2" ]; then
+        use_IPv6=true
+    elif [ "$frontier_major_version" -eq "2" ] && [ "$frontier_minor_version" -ge "9" ]; then
+        use_IPv6=true
+    fi
+fi
+
 # Function to check proxies
 # $1 - list of proxies
 # $2 - $pilot
+# $3 - $use_IPv6
 check_proxies() {
     # Script does not use backupproxyurl if it is SAM test, but script uses backupproxyurl if it is pilot
     if $2; then
@@ -151,12 +167,24 @@ check_proxies() {
                 found_proxy=true
                 hostname=${proxy#*//}
                 hostname=${hostname%:*}
-                # The frontier client does not work with IPv6 addresses in URLs for now
-                IP_addresses=`getent ahostsv4 $hostname | awk '/STREAM/{print $1}'`
-                if [ -z "$IP_addresses" ]; then
+                IPv4_addresses=`getent ahostsv4 $hostname | awk '/STREAM/{print $1}'`
+                IPv6_addresses=`getent ahostsv6 $hostname | awk '/STREAM/{print $1}' | grep -v ^::ffff:`
+                if $3; then
+                  if [ -z "$IPv4_addresses" ] && [ -z "$IPv6_addresses" ]; then
                     IP_addresses=$hostname
-                elif getent ahostsv6 $hostname | awk '/STREAM/{print $1}' | grep -qv ^::ffff:; then
-                    IP_addresses="$IP_addresses $hostname"
+                  else
+                    IP_addresses=$IPv4_addresses
+                    for IPv6_address in $IPv6_addresses; do
+                        IP_addresses="$IP_addresses [$IPv6_address]"
+                    done
+                  fi
+                else
+                  IP_addresses=$IPv4_addresses
+                  if [ -z "$IP_addresses" ]; then
+                      IP_addresses=$hostname
+                  elif [ ! -z "$IPv6_addresses" ]; then
+                      IP_addresses="$IP_addresses $hostname"
+                  fi
                 fi
                 for IP_address in $IP_addresses; do
                     if ($2 && ! $ever_succeeded) || ! $2; then
@@ -195,7 +223,7 @@ check_proxies() {
                         PROXYLIST="`sed -n '/returned "PROXY/{s/.*returned "//;s/PROXY /(proxyurl=/g;s/;/)/g;s/"/)/;p;q}' $debug_output`"
                         PROXYLIST=`echo $PROXYLIST | sed "s/(proxyurl=http:\/\/cmsbpfrontier.cern.ch/(backupproxyurl=http:\/\/cmsbpfrontier.cern.ch/g"`
                         PROXYLIST=`echo $PROXYLIST | sed "s/(proxyurl=http:\/\/cmsbproxy.fnal.gov/(backupproxyurl=http:\/\/cmsbproxy.fnal.gov/g"`
-                        check_proxies "$PROXYLIST" $2
+                        check_proxies "$PROXYLIST" $2 $3
                     fi
                     echo "Converting $proxy_config_url proxyconfigurl to proxyurl/backupproxyurl ended:" `date`
                     echo
@@ -218,7 +246,7 @@ ever_failed=false
 ever_succeeded=false
 found_proxyconfig=false
 found_proxy=false
-check_proxies "$FNCONNECT" $pilot
+check_proxies "$FNCONNECT" $pilot $use_IPv6
 
 #Check test results
 if [ "$failover" == true ]; then