final case classOffsetFromLast(idx: Int) extends ClientIPHeaderValueToUse with Product with Serializable
Reverse the list and use the value at the passed in index offset
e.g. idx=0 1.2.3.4,5.6.7.8,9.10.11.12 => 9.10.11.12 (same as Last)
e.g. idx=1 1.2.3.4,5.6.7.8,9.10.11.12 => 5.6.7.8
e.g. idx=2 1.2.3.4,5.6.7.8,9.10.11.12 => 1.2.3.4
e.g. idx=5 1.2.3.4,5.6.7.8,9.10.11.12 => 1.2.3.4 (use next available value)
Reverse the list and use the value at the passed in index offset
e.g. idx=0 1.2.3.4,5.6.7.8,9.10.11.12 => 9.10.11.12 (same as Last) e.g. idx=1 1.2.3.4,5.6.7.8,9.10.11.12 => 5.6.7.8 e.g. idx=2 1.2.3.4,5.6.7.8,9.10.11.12 => 1.2.3.4 e.g. idx=5 1.2.3.4,5.6.7.8,9.10.11.12 => 1.2.3.4 (use next available value)