- unless (defined $rhdr && $rhdr =~ $ehdr) {
- print STDERR "\n*** Mismatch on $hdrname: $rhdr =~ $ehdr\n";
- return undef;
+ if ($must_not_match = ($hdrname =~ /^!(\w+)/)) {
+ $hdrname = $1;
+ }
+ my $rhdr = $req->header ($hdrname);
+ if ($must_not_match) {
+ if (defined $rhdr && $rhdr =~ $ehdr) {
+ $rhdr = '' unless defined $rhdr;
+ print STDERR "\n*** Match forbidden $hdrname: $rhdr =~ $ehdr\n";
+ return undef;
+ }
+ } else {
+ unless (defined $rhdr && $rhdr =~ $ehdr) {
+ $rhdr = '' unless defined $rhdr;
+ print STDERR "\n*** Mismatch on $hdrname: $rhdr =~ $ehdr\n";
+ return undef;
+ }