fix propagation of circular referencing D records

[spider.git] / perl / DXProtHandle.pm

diff --git a/perl/DXProtHandle.pm b/perl/DXProtHandle.pm
index 7839e11c55ea868a81a159aa395b28188c50d98c..b6f4473d5c7bf2f1e75da328621a7a021a173fb0 100644 (file)
--- a/perl/DXProtHandle.pm
+++ b/perl/DXProtHandle.pm
@@ -43,11 +43,12 @@ use vars qw($pc11_max_age $pc23_max_age $last_pc50 $eph_restime $eph_info_restim
                        $investigation_int $pc19_version $myprot_version
                        %nodehops $baddx $badspotter $badnode $censorpc
                        $allowzero $decode_dk0wcy $send_opernam @checklist
-                       $eph_pc15_restime $pc9x_past_age
+                       $eph_pc15_restime $pc9x_past_age $pc9x_dupe_age
                        $pc10_dupe_age $pc92_slug_changes $last_pc92_slug
                        $pc92Ain $pc92Cin $pc92Din $pc92Kin $pc9x_time_tolerance
                   );
 
+$pc9x_dupe_age = 60;                   # catch loops of circular (usually) D records
 $pc10_dupe_age = 45;                   # just something to catch duplicate PC10->PC93 conversions
 $pc92_slug_changes = 60;               # slug any changes going outward for this long
 $last_pc92_slug = 0;                   # the last time we sent out any delayed add or del PC92s
@@ -1608,6 +1609,11 @@ sub handle_92
        my $t = $_[2];
        my $sort = $_[3];
 
+       # this catches loops of A/Ds
+#      if (eph_dup($line, $pc9x_dupe_age)) {
+#              return;
+#      }
+
        if ($pcall eq $main::mycall) {
                dbg("PCPROT: looped back, ignored") if isdbg('chanerr');
                return;
@@ -1631,7 +1637,9 @@ sub handle_92
                return;
        }
 
-       my $parent = check_pc9x_t($pcall, $t, 92, 1) || return;
+       # don't create routing entries for D records that don't already exist
+       # this is what causes all those PC92 loops!
+       my $parent = check_pc9x_t($pcall, $t, 92, $sort ne 'D') || return;
        my $oparent = $parent;
 
        $parent->do_pc9x(1);