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340 lines
8.3 KiB
340 lines
8.3 KiB
#!/usr/bin/perl
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use strict;
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use warnings;
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use Socket;
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use UUID;
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use BSD::Resource;
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use Getopt::Long;
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use Socket6;
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use Bencode qw( bencode bdecode );
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use Time::HiRes;
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my ($NUM, $RUNTIME, $STREAMS) = (1000, 30, 1);
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my ($NODEL, $IP, $IPV6, $KEEPGOING, $REINVITES, $BRANCHES);
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GetOptions(
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'no-delete' => \$NODEL,
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'num-calls=i' => \$NUM,
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'local-ip=s' => \$IP,
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'local-ipv6=s' => \$IPV6,
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'runtime=i' => \$RUNTIME,
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'keep-going' => \$KEEPGOING, # don't stop sending rtp if a packet doesn't go through
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'reinvites' => \$REINVITES,
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'branches' => \$BRANCHES,
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'max-streams=i' => \$STREAMS,
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) or die;
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($IP || $IPV6) or die("at least one of --local-ip or --local-ipv6 must be given");
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$SIG{ALRM} = sub { print "alarm!\n"; };
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setrlimit(RLIMIT_NOFILE, 8000, 8000);
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my @chrs = ('a' .. 'z', 'A' .. 'Z', '0' .. '9');
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sub rand_str {
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my ($len) = @_;
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return join('', (map {$chrs[rand(@chrs)]} (1 .. $len)));
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}
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my $fd;
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sub msg {
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my ($d) = @_;
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my $l = bencode($d);
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my $cookie = $$ . '_' . rand_str(10);
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my $r;
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while (1) {
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send($fd, "$cookie $l", 0) or die $!;
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my $err = '';
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alarm(1);
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recv($fd, $r, 0xffff, 0) or $err = "$!";
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alarm(0);
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$err =~ /interrupt/i and next;
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$err and die $err;
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last;
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}
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$r =~ s/^\Q$cookie\E +//s or die $r;
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$r =~ s/[\r\n]+$//s;
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return $r ? bdecode($r, 1) : undef;
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}
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socket($fd, AF_INET, SOCK_DGRAM, 0) or die $!;
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connect($fd, sockaddr_in(2223, inet_aton("127.0.0.1"))) or die $!;
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msg({command => 'ping'})->{result} eq 'pong' or die;
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my (@calls, %branches);
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sub send_receive {
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my ($send_fd, $receive_fd, $payload, $destination) = @_;
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send($send_fd, $payload, 0, $destination) or die $!;
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my $x;
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my $err = '';
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alarm(1);
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recv($receive_fd, $x, 0xffff, 0) or $err = "$!";
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alarm(0);
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$err && $err !~ /interrupt/i and die $err;
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return $x;
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}
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sub send_expect {
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my ($send_fd, $receive_fd, $payload, $expect, $destination) = @_;
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my $x = send_receive($send_fd, $receive_fd, $payload, $destination);
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if (($x || '') ne $expect) {
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return 0;
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}
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return 1;
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}
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sub rtcp_sr {
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my @now = Time::HiRes::gettimeofday();
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my $secs = $now[0] + 2208988800;
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my $frac = $now[1] / 1000000 * 2**32;
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my $sr = pack('CCnN NNN NN', (2 << 6) | 1, 200, 12, rand() * 2**32, $secs, $frac,
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12345, 0, 0);
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$sr .= pack('N CCCC NNNN', 0, 0, 0, 0, 0, 0, 0, 0, 0);
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return $sr;
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}
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sub rtcp_rtpfb {
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return pack('CCn NN', (2 << 6) | 1, 205, 2, rand() * 2**32, rand() * 2**32);
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}
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sub rtcp_avp {
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my ($recv, $send) = @_;
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my $sr = rtcp_sr();
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return ($sr, $sr);
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}
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sub rtcp_avpf {
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my ($recv, $send) = @_;
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my $sr = rtcp_sr();
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my $fb = rtcp_rtpfb();
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my $exp = $sr;
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$$recv{name} eq 'RTP/AVPF' and $exp .= $fb;
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return ($sr . $fb, $exp);
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}
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sub do_rtp {
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print("sending rtp\n");
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for my $c (@calls) {
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$c or next;
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my ($fds,$outputs,$protos,$cfds,$trans) = @$c{qw(fds outputs protos rtcp_fds transports)};
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for my $j (0 .. $#{$$fds[0]}) {
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for my $i ([0,1],[1,0]) {
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my ($a, $b) = @$i;
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my $pr = $$protos[$a];
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my $addr = inet_pton($$pr{family}, $$outputs[$b][$j][1]);
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my $payload = rand_str(100);
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my $dst = $$pr{sockaddr}($$outputs[$b][$j][0], $addr);
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if (!send_expect($$fds[$a][$j], $$fds[$b][$j], $payload, $payload, $dst)) {
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warn("no rtp reply received, ports $$outputs[$b][$j][0] and $$outputs[$a][$j][0]");
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$KEEPGOING or undef($c);
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}
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my $expect;
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($payload, $expect) = $$trans[$a]{rtcp_func}($$trans[$b], $$trans[$a]);
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$dst = $$pr{sockaddr}($$outputs[$b][$j][0] + 1, $addr);
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my $repl = send_receive($$cfds[$a][$j], $$cfds[$b][$j], $payload, $dst);
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$repl eq $expect or die;
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}
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}
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}
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}
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my %proto_defs = (
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ipv4 => {
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code => 'I',
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family => AF_INET,
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reply => '4',
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address => $IP,
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sockaddr => \&sockaddr_in,
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family_str => 'IP4',
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direction => 'internal',
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},
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ipv6 => {
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code => 'E',
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family => AF_INET6,
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reply => '6',
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address => $IPV6,
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sockaddr => \&sockaddr_in6,
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family_str => 'IP6',
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direction => 'external',
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},
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);
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my @protos_avail;
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$IP and push(@protos_avail, $proto_defs{ipv4});
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$IPV6 and push(@protos_avail, $proto_defs{ipv6});
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my @sides = qw(A B);
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my @transports = (
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{
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name => 'RTP/AVP',
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rtcp_func => \&rtcp_avp,
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},
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{
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name => 'RTP/AVPF',
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rtcp_func => \&rtcp_avpf,
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},
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);
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sub callid {
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my $i = rand_str(50);
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$BRANCHES or return [$i];
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rand() < .5 and return [$i];
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if (rand() < .5) {
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my @k = keys(%branches);
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@k and $i = $k[rand(@k)];
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}
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my $b = rand_str(20);
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push(@{$branches{$i}}, $b);
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return [$i, $b];
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}
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sub update_lookup {
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my ($c, $i) = @_;
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my $j = $i ^ 1;
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my $c_v = $$c{callid_viabranch} || ($$c{callid_viabranch} = callid());
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my ($callid, $viabranch) = @$c_v;
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my $protos = $$c{protos} || ($$c{protos} = []);
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my $trans = $$c{transports} || ($$c{transports} = []);
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my $fds_a = $$c{fds} || ($$c{fds} = []);
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my $cfds_a = $$c{rtcp_fds} || ($$c{rtcp_fds} = []);
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for my $x (0,1) {
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$$protos[$x] and next;
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$$protos[$x] = $protos_avail[rand(@protos_avail)];
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undef($$fds_a[$x]);
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}
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for my $x (0,1) {
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$$trans[$x] and next;
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#$$trans[$x] = $transports[rand(@transports)];
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$$trans[$x] = $transports[rand(@transports)];
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}
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my ($pr, $pr_o) = @$protos[$i, $j];
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my ($tr, $tr_o) = @$trans[$i, $j];
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my @commands = qw(offer answer);
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my $ports_a = $$c{ports} || ($$c{ports} = []);
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my $ports_t = $$ports_a[$i] || ($$ports_a[$i] = []);
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my $ips_a = $$c{ips} || ($$c{ips} = []);
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my $ips_t = $$ips_a[$i] || ($$ips_a[$i] = []);
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my $fds_t = $$fds_a[$i] || ($$fds_a[$i] = []);
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my $fds_o = $$fds_a[$j];
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my $cfds_t = $$cfds_a[$i] || ($$cfds_a[$i] = []);
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my $cfds_o = $$cfds_a[$j];
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my $num_streams = int(rand($STREAMS));
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($fds_o && @$fds_o) and $num_streams = $#$fds_o;
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for my $j (0 .. $num_streams) {
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if (!$$fds_t[$j]) {
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while (1) {
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undef($$fds_t[$j]);
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undef($$cfds_t[$j]);
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socket($$fds_t[$j], $$pr{family}, SOCK_DGRAM, 0) or die $!;
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socket($$cfds_t[$j], $$pr{family}, SOCK_DGRAM, 0) or die $!;
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my $port = rand(0x7000) << 1 + 1024;
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bind($$fds_t[$j], $$pr{sockaddr}($port,
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inet_pton($$pr{family}, $$pr{address}))) or next;
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bind($$cfds_t[$j], $$pr{sockaddr}($port + 1,
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inet_pton($$pr{family}, $$pr{address}))) or next;
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last;
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}
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my $addr = getsockname($$fds_t[$j]);
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my $ip;
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($$ports_t[$j], $ip) = $$pr{sockaddr}($addr);
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$$ips_t[$j] = inet_ntop($$pr{family}, $ip);
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}
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}
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my $tags = $$c{tags} || ($$c{tags} = []);
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$$tags[$i] or $$tags[$i] = rand_str(15);
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my $sdp = <<"!";
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v=0
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o=blah 123 123 IN $$pr{family_str} $$ips_t[0]
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s=session
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c=IN $$pr{family_str} $$ips_t[0]
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t=0 0
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!
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for my $p (@$ports_t) {
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my $cp = $p + 1;
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$sdp .= <<"!";
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m=audio $p $$tr{name} 8
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a=rtpmap:8 PCMA/8000
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a=rtcp:$cp
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!
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}
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my $dict = {sdp => $sdp, command => $commands[$i], 'call-id' => $callid,
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'from-tag' => $$tags[0],
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flags => [ qw( trust-address ) ],
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replace => [ qw( origin session-connection ) ],
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direction => [ $$pr{direction}, $$pr_o{direction} ],
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'received-from' => [ qw(IP4 127.0.0.1) ],
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'transport-protocol' => $$tr_o{name},
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};
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$viabranch and $dict->{'via-branch'} = $viabranch;
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$i == 1 and $dict->{'to-tag'} = $$tags[1];
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my $o = msg($dict);
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$$o{result} eq 'ok' or die;
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my ($rp_af, $rp_add) = $$o{sdp} =~ /c=IN IP([46]) (\S+)/s or die;
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my @rp_ports = $$o{sdp} =~ /m=audio (\d+) \Q$$tr_o{name}\E /gs or die;
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$rp_af ne $$pr_o{reply} and die "incorrect address family reply code";
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my $rpl_a = $$c{outputs} || ($$c{outputs} = []);
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my $rpl_t = $$rpl_a[$i] || ($$rpl_a[$i] = []);
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for my $rpl (@rp_ports) {
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$rpl == 0 and die "mediaproxy ran out of ports";
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push(@$rpl_t, [$rpl,$rp_add]);
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}
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}
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for my $iter (1 .. $NUM) {
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($iter % 10 == 0) and print("$iter\n"), do_rtp();
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my $c = {};
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update_lookup($c, 0);
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update_lookup($c, 1);
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push(@calls, $c);
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}
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my $end = time() + $RUNTIME;
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while (time() < $end) {
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sleep(1);
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do_rtp();
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@calls = sort {rand() < .5} grep(defined, @calls);
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if ($REINVITES) {
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my $c = $calls[rand(@calls)];
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print("simulating re-invite on $$c{callid_viabranch}[0]");
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for my $i (0,1) {
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if (rand() < .5) {
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print(", side $sides[$i]: new port");
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undef($$c{fds}[$i]);
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}
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else {
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print(", side $sides[$i]: same port");
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}
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}
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print("\n");
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update_lookup($c, 0);
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update_lookup($c, 1);
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}
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}
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if (!$NODEL) {
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print("deleting\n");
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for my $c (@calls) {
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$c or next;
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my ($tags, $c_v) = @$c{qw(tags callid_viabranch)};
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my ($callid, $viabranch) = @$c_v;
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my $dict = { command => 'delete', 'call-id' => $callid, 'from-tag' => $$tags[0],
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'to-tag' => $$tags[1],
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};
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$BRANCHES && rand() < .7 and $$dict{'via-branch'} = $viabranch;
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msg($dict);
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}
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}
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print("done\n");
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