2 # The RBN connection system
4 # Copyright (c) 2020 Dirk Koopman G1TLH
21 use Math::Round qw(nearest nearest_floor);
23 use Time::HiRes qw(gettimeofday);
70 our $DATA_VERSION = 1;
72 our @ISA = qw(DXChannel);
74 our $startup_delay = 5*60; # don't send anything out until this timer has expired
75 # this is to allow the feed to "warm up" with duplicates
76 # so that the "big rush" doesn't happen.
78 our $respottime = 3*60; # the time between respots of a callsign - if a call is
79 # still being spotted (on the same freq) and it has been
80 # spotted before, it's spotted again after this time
81 # until the next respottime has passed.
84 our $beacontime = 5*60; # same as minspottime, but for beacons (and shorter)
86 our $dwelltime = 10; # the amount of time to wait for duplicates before issuing
87 # a spot to the user (no doubt waiting with bated breath).
89 our $limbotime = 5*60; # if there are fewer than $minqual candidates and $dwelltime
90 # has expired then allow this spot to live a bit longer. It may
91 # simply be that it is not in standard spot coverage. (ask G4PIQ
94 our $cachetime = 60*60; # The length of time spot data is cached
96 our $filterdef = $Spot::filterdef; # we use the same filter as the Spot system. Can't think why :-).
98 my $spots; # the GLOBAL spot cache
99 my $qrg; # the GlOBAL (ephemeral) qrg cache (generated on re-read of cache)
102 my %runtime; # how long each channel has been running
104 our $cachefn = localdata('rbn_cache');
105 our $cache_valid = 4*60; # The cache file is considered valid if it is not more than this old
107 our $maxqrgdiff = 10; # the maximum
108 our $minqual = 2; # the minimum quality we will accept for output
109 our $maxqual = 9; # if there is enough quality, then short circuit any remaining dwelltime.
112 my $noinrush = 0; # override the inrushpreventor if set
113 our $maxdeviants = 5; # the number of deviant QRGs to record for skimmer records
115 our %seeme; # the list of users that want to see themselves
125 $spots = {VERSION=>$DATA_VERSION};
127 if (defined $DB::VERSION) {
136 my $self = DXChannel::alloc(@_);
138 # routing, this must go out here to prevent race condx
145 $self->{nouser} = {};
147 $self->{noraw10} = 0;
148 $self->{nospot10} = 0;
149 $self->{nouser10} = {};
150 $self->{norbn10} = 0;
151 $self->{nospothour} = 0;
152 $self->{nouserhour} = {};
153 $self->{norbnhour} = 0;
154 $self->{norawhour} = 0;
156 $self->{lasttime} = $main::systime;
157 $self->{respottime} = $respottime;
158 $self->{beacontime} = $beacontime;
159 $self->{showstats} = 0;
160 $self->{pingint} = 0;
161 $self->{nopings} = 0;
169 my ($self, $line, $sort) = @_;
170 my $user = $self->{user};
171 my $call = $self->{call};
172 my $name = $user->{name};
175 unless ($self->{hostname}) {
176 $self->{hostname} = $self->{conn}->peerhost || 'unknown';
179 $self->{name} = $name ? $name : $call;
180 $self->state('prompt'); # a bit of room for further expansion, passwords etc
181 $self->{lang} = $user->lang || $main::lang || 'en';
182 if ($line =~ /host=/) {
183 my ($h) = $line =~ /host=(\d+\.\d+\.\d+\.\d+)/;
184 $line =~ s/\s*host=\d+\.\d+\.\d+\.\d+// if $h;
186 ($h) = $line =~ /host=([\da..fA..F:]+)/;
187 $line =~ s/\s*host=[\da..fA..F:]+// if $h;
191 $self->{hostname} = $h;
194 $self->{width} = 80 unless $self->{width} && $self->{width} > 80;
195 $self->{consort} = $line; # save the connection type
197 LogDbg('DXCommand', "$call connected from $self->{hostname}");
199 # set some necessary flags on the user if they are connecting
200 $self->{registered} = 1;
201 # sort out privilege reduction
206 $nossid =~ s/-\d+$//;
208 $self->{inrbnfilter} = Filter::read_in('rbn', $call, 1)
209 || Filter::read_in('rbn', 'node_default', 1);
211 # clean up qra locators
212 my $qra = $user->qra;
213 $qra = undef if ($qra && !DXBearing::is_qra($qra));
215 my $lat = $user->lat;
216 my $long = $user->long;
217 $user->qra(DXBearing::lltoqra($lat, $long)) if (defined $lat && defined $long);
220 # if we have been running and stopped for a while
221 # if the cache is warm enough don't operate the inrush preventor
222 $self->{inrushpreventor} = exists $runtime{$call} && $runtime{$call} > $startup_delay || $noinrush ? 0 : $main::systime + $startup_delay;
223 dbg("RBN: noinrush: $noinrush, setting inrushpreventor on $self->{call} to $self->{inrushpreventor}");
226 my @queue; # the queue of spots ready to send
233 my $dbgrbn = isdbg('rbn');
235 # remove leading and trailing spaces
242 my $now = $main::systime;
245 dbg "RBN:RAW,$line" if isdbg('rbnraw');
246 return unless $line=~/^DX\s+de/;
248 my (undef, undef, $origin, $qrg, $call, $mode, $s, $m, $spd, $u, $sort, $t, $tx) = split /[:\s]+/, $line;
250 # fix up FT8 spots from 7001
251 $t = $u, $u = '' if !$t && is_ztime($u);
252 $t = $sort, $sort = '' if !$t && is_ztime($sort);
253 my $qra = $spd, $spd = '' if is_qra($spd);
256 # is this anything like a callsign?
257 unless (is_callsign($call)) {
258 dbg("RBN: ERROR $call from $origin on $qrg is invalid, dumped");
263 if ($DXProt::baddx->in($call)) {
264 dbg("RBN: Bad DX spot '$call', ignored");
265 dbg($line) if isdbg('nologchan');
270 # remove all extraneous crap from the origin - just leave the base callsign
271 my $norigin = basecall($origin);
273 dbg("RBN: ERROR '$origin' is an invalid callsign, dumped");
278 # is this callsign in badspotter list?
279 if ($DXProt::badspotter->in($origin) || $DXProt::badnode->in($origin)) {
280 dbg("RBN: ERROR $origin is a bad spotter/node, dumped");
285 unless ($qrg =~ /^\d+\.\d{1,3}$/) {
286 dbg("RBN: ERROR qrg $qrg from $origin invalid, dumped");
293 dbg qq{RBN:input decode or:$origin qr:$qrg ca:$call mo:$mode s:$s m:$m sp:$spd u:$u sort:$sort t:$t tx:$tx qra:$qra} if $dbgrbn && isdbg('rbn');
297 ++$self->{norawhour};
303 # fix up times for things like 'NXDXF B' etc
304 if ($tx && is_ztime($t)) {
313 if ($sort && $sort eq 'NCDXF') {
317 if ($sort && $sort eq 'BEACON') {
320 if ($mode =~ /^PSK/) {
323 if ($mode eq 'RTTY') {
327 # The main de-duping key is [call, $frequency], but we probe a bit around that frequency to find a
328 # range of concurrent frequencies that might be in play.
330 # The key to this is deducing the true callsign by "majority voting" (the greater the number of spotters
331 # the more effective this is) together with some lexical analsys probably in conjuction with DXSpider
332 # data sources (for singleton spots) to then generate a "centre" from and to zone (whatever that will mean if it isn't the usual one)
333 # and some heuristical "Kwalitee" rating given distance from the zone centres of spotter, recipient user
334 # and spotted. A map can be generated once per user and spotter as they are essentially mostly static.
335 # The spotted will only get a coarse position unless other info is available. Programs that parse
336 # DX bulletins and the online data online databases could be be used and then cached.
338 # Obviously users have to opt in to receiving RBN spots and other users will simply be passed over and
341 # Clearly this will only work in the 'mojo' branch of DXSpider where it is possible to pass off external
342 # data requests to ephemeral or semi resident forked processes that do any grunt work and the main
343 # process to just the standard "message passing" which has been shown to be able to sustain over 5000
344 # per second (limited by the test program's output and network speed, rather than DXSpider's handling).
347 my $nqrg = nearest(1, $qrg * 10); # normalised to nearest Khz
348 my $sp = "$call|$nqrg"; # hopefully the skimmers will be calibrated at least this well!
350 # deal with the unix time
351 my ($hh,$mm) = $t =~ /(\d\d)(\d\d)Z$/;
352 my $utz = $hh*3600 + $mm*60 + $main::systime_daystart; # possible issue with late spot from previous day
353 $utz -= 86400 if $utz > $now+3600; # too far ahead, drag it back one day
356 # But before we do anything, if this call is in the seeme hash then just send the spot to them
358 if (exists $seeme{$call} && (my $ref = $seeme{$call})) {
359 foreach my $rcall ( @$ref) {
360 my $uchan = DXChannel::get($rcall);
362 if ($uchan->is_user) {
363 if (isdbg('seeme')) {
365 dbg( qq{seemme:decode or:$origin qr:$qrg ca:$call mo:$mode s:$s m:$m sp:$spd u:$u sort:$sort t:$t tx:$tx qra:$qra});
367 my @s = Spot::prepare($qrg, $call, $utz, sprintf("%-3s %2ddB **SEEME**", $mode, $s), $origin.'-#');
368 my $buf = $uchan->format_dx_spot(@s);
369 dbg("seeme: result '$buf'") if isdbg('seeme');
370 $uchan->local_send('S', $buf);
372 LogDbg("RBN Someone is playing silly persons $rcall is not a user and cannot do 'seeme', ignored and reset");
380 my $cand = $spots->{$sp};
383 for ($i = $nqrg; !$cand && $i <= $nqrg+$search; $i += 1) {
385 $cand = $spots->{$new}, last if exists $spots->{$new};
388 my $diff = $i - $nqrg;
389 dbg(qq{RBN: QRG Diff using $new (+$diff) for $sp for qrg $qrg}) if (isdbg('rbnqrg') || ($dbgrbn && isdbg('rbn')));
395 for ($i = $nqrg; !$cand && $i >= $nqrg-$search; $i -= 1) {
397 $cand = $spots->{$new}, last if exists $spots->{$new};
400 my $diff = $nqrg - $i;
401 dbg(qq{RBN: QRG Diff using $new (-$diff) for $sp for qrg $qrg}) if (isdbg('rbnqrg') || ($dbgrbn && isdbg('rbn')));
406 # if we have one and there is only one slot and that slot's time isn't expired for respot then return
408 if ($cand && ref $cand) {
409 if (@$cand <= CData) {
410 if ($self->{respottime} > 0 && $now - $cand->[CTime] < $self->{respottime}) {
411 dbg("RBN: key: '$sp' call: $call qrg: $qrg DUPE \@ ". atime(int $cand->[CTime])) if $dbgrbn && isdbg('rbn');
415 dbg("RBN: key: '$sp' RESPOTTING call: $call qrg: $qrg last seen \@ ". atime(int $cand->[CTime])) if $dbgrbn && isdbg('rbn');
416 $cand->[CTime] = $now;
420 # otherwise we have a spot being built up at the moment
422 dbg("RBN: key '$sp' = '$cand' not ref");
425 # new spot / frequency
426 $spots->{$sp} = $cand = [$now, 0];
427 dbg("RBN: key: '$sp' call: $call qrg: $qrg NEW" . ($respot ? ' RESPOT' : '')) if $dbgrbn && isdbg('rbn');
430 # add me to the display queue unless we are waiting for initial in rush to finish
431 return unless $noinrush || $self->{inrushpreventor} < $main::systime;
433 # build up a new record and store it in the buildup
434 # create record and add into the buildup
435 my $r = [$origin, nearest(.1, $qrg), $call, $mode, $s, $t, $utz, $respot, $u];
436 my @s = Spot::prepare($r->[RQrg], $r->[RCall], $r->[RUtz], '', $r->[ROrigin]);
438 dbg("RBN: ERROR invalid prefix/callsign $call from $origin-# on $qrg, dumped");
442 if ($self->{inrbnfilter}) {
443 my ($want, undef) = $self->{inrbnfilter}->it($s);
446 $r->[RSpotData] = \@s;
448 ++$self->{queue}->{$sp};# unless @$cand>= CData; # queue the KEY (not the record)
450 dbg("RBN: key: '$sp' ADD RECORD call: $call qrg: $qrg origin: $origin respot: $respot") if $dbgrbn && isdbg('rbn');
455 dbg "RBN:DATA,$line" if $dbgrbn && isdbg('rbn');
459 # we should get the spot record minus the time, so just an array of record (arrays)
468 ++$self->{norbnhour};
470 # $r = [$origin, $qrg, $call, $mode, $s, $utz, $respot];
472 my $mode = $cand->[CData]->[RMode]; # as all the modes will be the same;
474 my @dxchan = DXChannel::get_all();
476 foreach my $dxchan (@dxchan) {
477 next unless $dxchan->is_user;
478 my $user = $dxchan->{user};
479 next unless $user && $user->wantrbn;
481 # does this user want this sort of spot at all?
483 ++$want if $user->wantbeacon && $mode =~ /^BCN|DXF/;
484 ++$want if $user->wantcw && $mode =~ /^CW/;
485 ++$want if $user->wantrtty && $mode =~ /^RTT/;
486 ++$want if $user->wantpsk && $mode =~ /^PSK|FSK|MSK/;
487 ++$want if $user->wantft && $mode =~ /^FT/;
489 dbg(sprintf("RBN: spot selection for $dxchan->{call} mode: '$mode' want: $want flags rbn:%d ft:%d bcn:%d cw:%d psk:%d rtty:%d",
496 )) if isdbg('rbnll');
498 # send one spot to one user out of the ones that we have
499 $self->dx_spot($dxchan, $quality, $cand) if $want;
509 my $call = $dxchan->{call};
510 my $strength = 100; # because it could if we talk about FTx
516 ++$self->{nousers}->{$call};
517 ++$self->{nousers10}->{$call};
518 ++$self->{nousershour}->{$call};
521 my $rf = $dxchan->{rbnfilter} || $dxchan->{spotsfilter};
524 foreach my $r (@$cand) {
525 # $r = [$origin, $qrg, $call, $mode, $s, $t, $utz, $respot, $qra];
526 # Spot::prepare($qrg, $call, $utz, $comment, $origin);
527 next unless $r && ref $r;
529 $qra = $r->[RQra] if !$qra && $r->[RQra] && is_qra($r->[RQra]);
531 $comment = sprintf "%-3s %2ddB $quality", $r->[RMode], $r->[RStrength];
532 my $s = $r->[RSpotData]; # the prepared spot
533 $s->[SComment] = $comment; # apply new generated comment
535 ++$zone{$s->[SZone]}; # save the spotter's zone
537 # save the lowest strength one
538 if ($r->[RStrength] < $strength) {
539 $strength = $r->[RStrength];
541 dbg("RBN: STRENGTH spot: $s->[SCall] qrg: $s->[SQrg] origin: $s->[SOrigin] dB: $r->[RStrength] < $strength") if isdbg 'rbnll';
545 my ($want, undef) = $rf->it($s);
546 dbg("RBN: FILTERING for $call spot: $s->[SCall] qrg: $s->[SQrg] origin: $s->[SOrigin] dB: $r->[RStrength] com: '$s->[SComment]' want: " . ($want ? 'YES':'NO')) if isdbg 'rbnll';
553 $saver = $filtered; # if nothing passed the filter's lips then $saver == $filtered == undef !
558 # create a zone list of spotters
559 delete $zone{$saver->[SZone]}; # remove this spotter's zone (leaving all the other zones)
560 my $z = join ',', sort {$a <=> $b} keys %zone;
562 # alter spot data accordingly
563 $saver->[SComment] .= " Z:$z" if $z;
565 send_final($dxchan, $saver);
569 ++$self->{nospothour};
572 my $user = DXUser::get_current($saver->[SCall]) || DXUser->new($saver->[SCall]);
573 unless ($user->qra && is_qra($user->qra)) {
575 dbg("RBN: update qra on $saver->[SCall] to $qra");
577 # update lastseen if nothing else
587 my $call = $dxchan->{call};
590 dbg("RBN: SENDING to $call spot: $saver->[SCall] qrg: $saver->[SQrg] origin: $saver->[SOrigin] $saver->[SComment]") if isdbg 'rbnll';
591 if ($dxchan->{ve7cc}) {
592 my $call = $saver->[SOrigin];
593 $saver->[SOrigin] .= '-#';
594 $buf = VE7CC::dx_spot($dxchan, @$saver);
595 $saver->[SOrigin] = $call;
597 my $call = $saver->[SOrigin];
598 $saver->[SOrigin] = substr($call, 0, 6);
599 $saver->[SOrigin] .= '-#';
600 $buf = $dxchan->format_dx_spot(@$saver);
601 $saver->[SOrigin] = $call;
603 $dxchan->local_send('R', $buf);
609 my $rbnskim = isdbg('rbnskim');
611 foreach my $dxchan (DXChannel::get_all()) {
612 next unless $dxchan->is_rbn;
614 # At this point we run the queue to see if anything can be sent onwards to the punter
615 my $now = $main::systime;
616 my $ta = [gettimeofday];
619 # now run the waiting queue which just contains KEYS ($call|$qrg)
620 foreach my $sp (keys %{$dxchan->{queue}}) {
621 my $cand = $spots->{$sp};
624 unless ($cand && $cand->[CTime]) {
625 dbg "RBN Cand $sp " . ($cand ? 'def' : 'undef') . " [CTime] " . ($cand->[CTime] ? 'def' : 'undef') . " dwell $dwelltime";
626 delete $spots->{$sp};
627 delete $dxchan->{queue}->{$sp}; # remove
631 my $ctime = $cand->[CTime];
632 my $quality = @$cand - CData;
633 my $dwellsecs = $now - $ctime;
634 if ($quality >= $maxqual || $dwellsecs >= $dwelltime || $dwellsecs >= $limbotime) {
635 # we have a candidate, create qualitee value(s);
636 unless (@$cand > CData) {
637 dbg "RBN: QUEUE key '$sp' MISSING RECORDS, IGNORED" . dd($cand) if isdbg 'rbnqueue';
638 delete $spots->{$sp}; # don't remember it either - this means that a spot HAS to come in with sufficient spotters to be processed.
639 delete $dxchan->{queue}->{$sp};
642 dbg "RBN: QUEUE PROCESSING key: '$sp' $now >= $cand->[CTime]" if isdbg 'rbnqueue';
643 my $spotters = $quality;
645 # dump it and remove it from the queue if it is of unadequate quality, but only if it is no longer in Limbo and can be reasonably passed on to its demise
646 my $r = $cand->[CData];
647 if ($dwellsecs > $limbotime && $quality < $minqual) {
648 if ( $rbnskim && isdbg('rbnskim')) {
651 my $lastin = difft($ctime, $now, 2);
652 my $s = "RBN:SKIM time in Limbo exceeded DUMPED (lastin: $lastin Q:$quality < Q:$minqual) key: '$sp' = $r->[RCall] on $r->[RQrg] by $r->[ROrigin] \@ $r->[RTime] route: $dxchan->{call}";
656 delete $spots->{$sp}; # don't remember it either - this means that a spot HAS to come in with sufficient spotters to be processed.
657 delete $dxchan->{queue}->{$sp};
661 # we have a possible removal from Limbo, check for more than one skimmer and reset the quality if required
662 # DOES THIS TEST CAUSE RACES?
663 if (!$r->[Respot] && $quality >= $minqual && $dwellsecs > $dwelltime+1) {
665 # because we don't need to check for repeats by the same skimmer in the normal case, we do here
668 foreach my $wr (@$cand) {
670 push @origin, $wr->[ROrigin];
671 if (exists $seen{$wr->[ROrigin]}) {
674 $seen{$wr->[ROrigin]} = $wr;
676 # reset the quality to ignore dupes
678 $quality = keys %seen;
679 if ($quality >= $minqual) {
680 if ( $rbnskim && isdbg('rbnskim')) {
681 my $lastin = difft($ctime, $now, 2);
682 my $sk = join ' ', keys %seen;
683 my $or = join ' ', @origin;
684 my $s = "RBN:SKIM promoted from Limbo - key: '$sp' (lastin: $lastin Q now: $quality was $oq skimmers now: $sk";
685 $s .= " was $or" if $or ne $sk;
689 } elsif ($oq != $quality) {
690 if ( $rbnskim && isdbg('rbnskim')) {
691 my $lastin = difft($ctime, $now, 2);
692 my $sk = join ' ', keys %seen;
693 my $or = join ' ', @origin;
694 my $s = "RBN:SKIM quality reset key: '$sp' (lastin: $lastin Q now: $quality was $oq skimmers now: $sk was: $or)";
698 my @ncand = (@$cand[CTime, CQual], values %seen);
699 $spots->{$sp} = \@ncand;
703 # we now kick this spot into Limbo
704 if ($quality < $minqual) {
708 $quality = 9 if $quality > 9;
709 $cand->[CQual] = $quality if $quality > $cand->[CQual];
711 # this scores each candidate according to its skimmer's QRG score (i.e. how often it agrees with its peers)
712 # what happens is hash of all QRGs in candidates are incremented by that skimmer's reputation for "accuracy"
713 # or, more exactly, past agreement with the consensus. This score can be from -5 -> +5.
719 foreach $r (@$cand) {
721 if (exists $seen{$r->[ROrigin]}) {
725 $seen{$r->[ROrigin]} = 1;
726 $band ||= int $r->[RQrg] / 1000;
727 $sk = "SKIM|$r->[ROrigin]|$band"; # thus only once per set of candidates
728 $skimmer = $spots->{$sk};
730 $skimmer = $spots->{$sk} = [1, 0, 0, $now, []]; # this first time, this new skimmer gets the benefit of the doubt on frequency.
731 dbg("RBN:SKIM new slot $sk " . $json->encode($skimmer)) if $rbnskim && isdbg('rbnskim');
733 $qrg{$r->[RQrg]} += ($skimmer->[DScore] || 1);
736 # determine the most likely qrg and then set it - NOTE (-)ve votes, generated by the skimmer scoring system above, are ignored
741 while (my ($k, $votes) = each %qrg) {
749 # Ignore possible spots with 0 QRG score - as determined by the skimmer scoring system above - as they are likely to be wrong
751 if ( $rbnskim && isdbg('rbnskim')) {
753 while (my ($k, $v) = (each %qrg)) {
758 foreach $r (@$cand) {
759 next unless $r && ref $r;
760 dbg "RBN:SKIM cand $i QRG likely wrong from '$sp' = $r->[RCall] on $r->[RQrg] by $r->[ROrigin] \@ $r->[RTime] (qrgs: $keys c: $c) route: $dxchan->{call}, ignored";
764 delete $spots->{$sp}; # get rid
765 delete $dxchan->{queue}->{$sp};
769 # detemine and spit out the deviants. Then adjust the scores according to whether it is a deviant or good
770 # NOTE: deviant nodes can become good (or less bad), and good nodes bad (or less good) on each spot that
771 # they generate. This is based solely on each skimmer's agreement (or not) with the "consensus" score generated
772 # above ($qrg). The resultant score + good + bad is stored per band and will be used the next time a spot
773 # appears on this band from each skimmer.
774 foreach $r (@$cand) {
775 next unless $r && ref $r;
776 my $diff = $c > 1 ? nearest(.1, $r->[RQrg] - $qrg) : 0;
777 $sk = "SKIM|$r->[ROrigin]|$band";
778 $skimmer = $spots->{$sk};
780 ++$skimmer->[DBad] if $skimmer->[DBad] < $maxdeviants;
781 --$skimmer->[DGood] if $skimmer->[DGood] > 0;
782 push @deviant, sprintf("$r->[ROrigin]:%+.1f", $diff);
783 push @{$skimmer->[DEviants]}, $diff;
784 shift @{$skimmer->[DEviants]} while @{$skimmer->[DEviants]} > $maxdeviants;
786 ++$skimmer->[DGood] if $skimmer->[DGood] < $maxdeviants;
787 --$skimmer->[DBad] if $skimmer->[DBad] > 0;
788 shift @{$skimmer->[DEviants]};
790 $skimmer->[DScore] = $skimmer->[DGood] - $skimmer->[DBad];
791 if ($rbnskim && isdbg('rbnskim')) {
792 my $lastin = difft($skimmer->[DLastin], $now, 2);
793 my $difflist = join(', ', @{$skimmer->[DEviants]});
794 $difflist = " band qrg diffs: $difflist" if $difflist;
795 dbg("RBN:SKIM key $sp slot $sk $r->[RQrg] - $qrg = $diff Skimmer score: $skimmer->[DGood] - $skimmer->[DBad] = $skimmer->[DScore] lastseen:$lastin ago$difflist");
797 $skimmer->[DLastin] = $now;
798 $r->[RSpotData]->[SQrg] = $qrg if $qrg && $c > 1; # set all the QRGs to the agreed value
801 $qrg = (sprintf "%.1f", $qrg)+0;
804 my $squality = "Q:$cand->[CQual]";
805 $squality .= '*' if $c > 1;
806 $squality .= '+' if $r->[Respot];
808 if (isdbg('progress')) {
809 my $rt = difft($ctime, $now, 2);
810 my $s = "RBN: SPOT key: '$sp' = $r->[RCall] on $r->[RQrg] by $r->[ROrigin] \@ $r->[RTime] $squality route: $dxchan->{call} dwell:$rt";
812 $s .= " QRGScore: $mv Deviants: $td/$spotters";
813 $s .= ' (' . join(', ', sort @deviant) . ')' if $td;
817 # finally send it out to any waiting public
818 send_dx_spot($dxchan, $squality, $cand);
820 # clear out the data and make this now just "spotted", but no further action required until respot time
821 dbg "RBN: QUEUE key '$sp' cleared" if isdbg 'rbn';
823 delete $dxchan->{queue}->{$sp};
825 # calculate new sp (which will be 70% likely the same as the old one)
826 # we do this to cope with the fact that the first spotter may well be "wrongly calibrated" giving a qrg that disagrees with the majority.
827 # and we want to store the key that corresponds to majority opinion.
828 my $nqrg = nearest(1, $qrg * 10); # normalised to nearest Khz
829 my $nsp = "$r->[RCall]|$nqrg";
831 dbg("RBN:SKIM CHANGE KEY sp '$sp' -> '$nsp' for storage") if $rbnskim && isdbg('rbnskim');
832 delete $spots->{$sp};
833 $spots->{$nsp} = [$now, $cand->[CQual]];
835 $spots->{$sp} = [$now, $cand->[CQual]];
839 dbg sprintf("RBN: QUEUE key: '$sp' SEND time not yet reached %.1f secs left", $cand->[CTime] + $dwelltime - $now) if isdbg 'rbnqueue';
842 if (isdbg('rbntimer')) {
843 my $diff = _diffus($ta);
844 dbg "RBN: TIMER process queue for call: $dxchan->{call} $items spots $diff uS";
851 foreach my $dxchan (DXChannel::get_all()) {
852 next unless $dxchan->is_rbn;
853 dbg "RBN:STATS minute $dxchan->{call} raw: $dxchan->{noraw} retrieved spots: $dxchan->{norbn} delivered: $dxchan->{nospot} after filtering to users: " . scalar keys %{$dxchan->{nousers}} if isdbg('rbnstats');
854 if ($dxchan->{noraw} == 0 && $dxchan->{lasttime} > 60) {
855 LogDbg('RBN', "RBN: no input from $dxchan->{call}, disconnecting");
858 $dxchan->{noraw} = $dxchan->{norbn} = $dxchan->{nospot} = 0; $dxchan->{nousers} = {};
859 $runtime{$dxchan->{call}} += 60;
862 # save the spot cache
863 write_cache() unless $main::systime + $startup_delay < $main::systime;;
870 while (my ($k,$cand) = each %{$spots}) {
871 next if $k eq 'VERSION';
872 next if $k =~ /^O\|/;
873 next if $k =~ /^SKIM\|/;
875 if ($main::systime - $cand->[CTime] > $cachetime) {
883 dbg "RBN:STATS spot cache remain: $count removed: $removed"; # if isdbg('rbn');
884 foreach my $dxchan (DXChannel::get_all()) {
885 next unless $dxchan->is_rbn;
886 my $nq = keys %{$dxchan->{queue}};
887 my $pc = $dxchan->{noraw10} ? sprintf("%.1f%%",$dxchan->{norbn10}*100/$dxchan->{noraw10}) : '0.0%';
888 dbg "RBN:STATS 10-minute $dxchan->{call} queue: $nq raw: $dxchan->{noraw10} retrieved spots: $dxchan->{norbn10} ($pc) delivered: $dxchan->{nospot10} after filtering to users: " . scalar keys %{$dxchan->{nousers10}};
889 $dxchan->{noraw10} = $dxchan->{norbn10} = $dxchan->{nospot10} = 0; $dxchan->{nousers10} = {};
895 foreach my $dxchan (DXChannel::get_all()) {
896 next unless $dxchan->is_rbn;
897 my $nq = keys %{$dxchan->{queue}};
898 my $pc = $dxchan->{norawhour} ? sprintf("%.1f%%",$dxchan->{norbnhour}*100/$dxchan->{norawhour}) : '0.0%';
899 dbg "RBN:STATS hour $dxchan->{call} queue: $nq raw: $dxchan->{norawhour} retrieved spots: $dxchan->{norbnhour} ($pc) delivered: $dxchan->{nospothour} after filtering to users: " . scalar keys %{$dxchan->{nousershour}};
900 $dxchan->{norawhour} = $dxchan->{norbnhour} = $dxchan->{nospothour} = 0; $dxchan->{nousershour} = {};
911 my $ta = [ gettimeofday ];
912 $json->indent(1)->canonical(1) if isdbg 'rbncache';
913 my $s = eval {$json->encode($spots)};
915 my $fh = IO::File->new(">$cachefn") or confess("writing $cachefn $!");
919 dbg("RBN:Write_cache error '$@'");
922 $json->indent(0)->canonical(0);
923 my $diff = _diffms($ta);
924 my $size = sprintf('%.3fKB', (length($s) / 1000));
925 dbg("RBN:WRITE_CACHE size: $size time to write: $diff mS");
931 my $mt = (stat($cachefn))[9];
932 my $t = $main::systime - $mt || 1;
933 my $p = difft($mt, 2);
934 if ($t < $cache_valid) {
935 dbg("RBN:check_cache '$cachefn' spot cache exists, created $p ago and not too old");
936 my $fh = IO::File->new($cachefn);
941 dbg("RBN:check_cache cache read size " . length $s);
944 dbg("RBN:check_cache file read error $!");
948 eval {$spots = $json->decode($s)};
949 if ($spots && ref $spots) {
950 if (exists $spots->{VERSION} && $spots->{VERSION} == $DATA_VERSION) {
951 # now clean out anything that has spot build ups in progress
952 while (my ($k, $cand) = each %$spots) {
953 next if $k eq 'VERSION';
954 next if $k =~ /^O\|/;
955 next if $k =~ /^SKIM\|/;
956 if (@$cand > CData) {
957 $spots->{$k} = [$cand->[CTime], $cand->[CQual]];
960 dbg("RBN:check_cache spot cache restored");
964 dbg("RBN::checkcache error decoding $@");
967 my $d = difft($main::systime-$cache_valid);
968 dbg("RBN::checkcache '$cachefn' created $p ago is too old (> $d), ignored");
971 dbg("RBN:check_cache '$cachefn' spot cache not present");
980 my $base = basecall($call);
981 my $ref = $seeme{$base} || [];
982 push @$ref, $call unless grep $_ eq $call, @$ref;
983 $seeme{$base} = $ref;
989 my $base = basecall($call);
990 my $ref = $seeme{$base};
991 return unless $ref && @$ref;
993 @$ref = grep {$_ ne $call} @$ref;
995 $seeme{$base} = $ref;
997 delete $seeme{basecall($call)};