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rtpengine
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TT#65052 support adding pause after DTMF PCM 

Change-Id: I0332ac2488f9d2d12ce4d84c3e8b60caf35d9c6c
changes/64/33764/1
Richard Fuchs 6 years ago
parent
3905a31629
commit
068bdb224f
5 changed files with 84 additions and 14 deletions
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  1. +11
    -1
      daemon/call_interfaces.c
  2. +15
    -4
      daemon/dtmf.c
  3. +1
    -1
      include/dtmf.h
  4. +6
    -0
      lib/dtmflib.c
  5. +51
    -8
      t/auto-daemon-tests.pl

+ 11
- 1
daemon/call_interfaces.c View File

@ -1865,6 +1865,16 @@ const char *call_play_dtmf_ng(bencode_item_t *input, bencode_item_t *output) {
ilog(LOG_WARN, "Invalid duration (%lli ms) specified, using 5000 ms instead", duration);
}
long long pause = bencode_dictionary_get_int_str(input, "pause", 100);
if (pause < 100) {
pause = 100;
ilog(LOG_WARN, "Invalid pause (%lli ms) specified, using 100 ms instead", pause);
}
else if (pause > 5000) {
pause = 5000;
ilog(LOG_WARN, "Invalid pause (%lli ms) specified, using 5000 ms instead", pause);
}
long long code = bencode_dictionary_get_int_str(input, "code", -1);
err = "Out of range 'code' specified";
if (code == -1) {
@ -1905,7 +1915,7 @@ const char *call_play_dtmf_ng(bencode_item_t *input, bencode_item_t *output) {
goto out;
found:;
err = dtmf_inject(media, code, volume, duration);
err = dtmf_inject(media, code, volume, duration, pause);
out:
if (call) {


+ 15
- 4
daemon/dtmf.c View File

@ -179,7 +179,7 @@ static char dtmf_code_to_char(int code) {
static const char *dtmf_inject_pcm(struct call_media *media, struct call_monologue *monologue,
struct packet_stream *ps, struct ssrc_ctx *ssrc_in, struct codec_handler *ch,
struct codec_ssrc_handler *csh,
int code, int volume, int duration)
int code, int volume, int duration, int pause)
{
struct call *call = monologue->call;
@ -187,13 +187,16 @@ static const char *dtmf_inject_pcm(struct call_media *media, struct call_monolog
if (!ssrc_out)
return "No output SSRC context present"; // XXX generate stream
int duration_samples = duration * ch->dest_pt.clock_rate / 1000;
int pause_samples = pause * ch->dest_pt.clock_rate / 1000;
// we generate PCM DTMF by simulating a detected RFC event packet
// XXX this shouldn't require faking an actual RTP packet
struct telephone_event_payload tep = {
.event = code,
.volume = -1 * volume,
.end = 1,
.duration = htons(duration * ch->dest_pt.clock_rate / 1000),
.duration = htons(duration_samples),
};
struct rtp_header rtp = {
.m_pt = 0xff,
@ -217,6 +220,14 @@ static const char *dtmf_inject_pcm(struct call_media *media, struct call_monolog
media->dtmf_injector->func(media->dtmf_injector, &packet);
// insert pause
tep.event = 0xff;
tep.duration = htons(pause_samples);
rtp.seq_num = htons(ssrc_in->parent->sequencer.seq);
media->dtmf_injector->func(media->dtmf_injector, &packet);
// skip generated samples
uint64_t pts_offset = codec_encoder_pts(csh) - encoder_pts;
codec_decoder_skip_pts(csh, av_rescale(pts_offset, ch->dest_pt.clock_rate, ch->source_pt.clock_rate));
@ -229,7 +240,7 @@ static const char *dtmf_inject_pcm(struct call_media *media, struct call_monolog
return 0;
}
const char *dtmf_inject(struct call_media *media, int code, int volume, int duration) {
const char *dtmf_inject(struct call_media *media, int code, int volume, int duration, int pause) {
struct call_monologue *monologue = media->monologue;
if (!media->streams.head)
@ -261,7 +272,7 @@ const char *dtmf_inject(struct call_media *media, int code, int volume, int dura
// if we don't have a DTMF payload type, we have to generate PCM
if (media->dtmf_injector->dtmf_payload_type == -1)
return dtmf_inject_pcm(media, monologue, ps, ssrc_in, ch, csh, code, volume, duration);
return dtmf_inject_pcm(media, monologue, ps, ssrc_in, ch, csh, code, volume, duration, pause);
ilog(LOG_DEBUG, "Injecting RFC DTMF event #%i for %i ms (vol %i) from '" STR_FORMAT "' (media #%u) "
"into RTP PT %i, SSRC %" PRIx32,


+ 1
- 1
include/dtmf.h View File

@ -22,7 +22,7 @@ int dtmf_event(struct media_packet *, str *, int);
int dtmf_event_payload(str *, uint64_t *, uint64_t, struct dtmf_event *, GQueue *);
void dtmf_event_free(void *);
int dtmf_code_from_char(char);
const char *dtmf_inject(struct call_media *media, int code, int volume, int duration);
const char *dtmf_inject(struct call_media *media, int code, int volume, int duration, int pause);
#endif

+ 6
- 0
lib/dtmflib.c View File

@ -41,6 +41,12 @@ void dtmf_samples(void *buf, unsigned long offset, unsigned long num, unsigned i
int16_t *samples = buf;
const struct dtmf_freq *df;
if (event == 0xff) {
// pause - silence samples
memset(samples, 0, num * 2);
return;
}
if (event > G_N_ELEMENTS(dtmf_freqs)) {
ilog(LOG_WARN | LOG_FLAG_LIMIT, "Unsupported DTMF event %u", event);
memset(buf, 0, num * 2);


+ 51
- 8
t/auto-daemon-tests.pl View File

@ -616,7 +616,7 @@ snd($sock_a, $port_b, rtp(0, 1001, 3160, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1001, 3160, $ssrc, "\x00" x 160));
$resp = rtpe_req('play DTMF', 'inject DTMF towards B',
{ 'from-tag' => $ft, code => 'C', volume => 5, duration => 120 });
{ 'from-tag' => $ft, code => 'C', volume => 5, duration => 120, pause => 110 });
snd($sock_a, $port_b, rtp(0, 1002, 3320, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1002, 3320, $ssrc, "\xff\x93\x94\xbc\x2e\x56\xbf\x2b\x13\x1b\xa7\x8e\x98\x47\x25\x41\xe2\x24\x16\x2b\x99\x8e\x9f\x28\x1e\x3d\x5b\x23\x1c\xdf\x92\x8f\xb6\x1c\x1c\x40\x5d\x26\x25\xaa\x8f\x95\x3b\x15\x1d\x5e\xde\x2c\x38\x9d\x8f\x9e\x1f\x11\x20\xc0\xc1\x37\xdd\x99\x92\xb7\x15\x10\x2c\xac\xb5\x49\xb8\x97\x99\x37\x0f\x13\x58\xa0\xae\x67\xae\x99\xa4\x1f\x0d\x1a\xae\x9b\xad\x7b\xad\x9d\xbf\x16\x0e\x27\x9d\x98\xb0\x55\xb1\xa6\x3a\x11\x11\x63\x95\x98\xbf\x3e\xbb\xb4\x26\x10\x1a\xa9\x90\x9a\x4e\x30\xce\xd4\x1e\x12\x29\x99\x8e\xa1\x2d\x29\x6d\x4b\x1c\x18\xef\x91\x8f\xb6\x1f\x24\x57\x3e\x1d\x20\xa9\x8e\x95\x3e\x19\x23\x67\x3e\x21\x31\x9c\x8e\x9e\x22\x14\x26\xcd\x4a"));
@ -630,8 +630,19 @@ snd($sock_a, $port_b, rtp(0, 1006, 3960, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1006, 3960, $ssrc, "\xd6\xc6\x9d\x9b\x3d\x0f\x11\x49\x9c\xa1\xd4\xbf\x9f\xa6\x22\x0e\x18\xaf\x96\xa2\x6e\xc6\xa5\xbe\x19\x0e\x24\x9d\x93\xa8\x40\xe1\xae\x42\x15\x12\x4e\x94\x93\xb7\x2e\x4e\xbe\x2d\x14\x1a\xab\x8f\x97\x52\x25\x3e\xdc\x26\x16\x28\x9b\x8e\x9e\x2b\x1e\x3a\x61\x25\x1b\x5d\x93\x8f\xaf\x1d\x1c\x3d\x67\x27\x24\xad\x8f\x93\x45\x15\x1c\x53\xd7\x2d\x35\x9f\x8f\x9c\x22\x11\x1f\xc5\xbe\x38\x7a\x9a\x91\xb0\x17\x10\x29\xad\xb3\x4a\xbc\x98\x98\x3e\x10\x12\x48\xa1\xad\x6a\xb1\x9a\xa1\x21\x0e\x18\xb3\x9b\xab\x7d\xaf\x9d\xb9\x18\x0e\x23\x9f\x97\xae\x55\xb4\xa5\x40\x12\x10\x49\x96\x97\xbb\x3d\xbd\xb2\x29\x10\x18\xac\x90\x99\x5d\x2f\xd4\xcd\x1f\x12\x25\x9b"));
snd($sock_a, $port_b, rtp(0, 1007, 4120, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1007, 4120, $ssrc, "\x8e\x9f\x2f\x28\x5f\x51\x1d\x17\x52\x92\x8f\xaf\x20\x22\x50\x42\x1e\x1f\xad\x8e\x93\x4b\x19\x21\x5d\x42\x22\x2e\x9d\x8e\x9c\x25\x14\x24\xd0\x4f\x2a\x68\x97\x8f\xae\x18\x12\x2c\xb7\xdf\x36\xb6\x94\x95\x41\x11\x14\x48\xaa\xc3\x4a\xaa\x95\x9e\x21\x0e\x19\xb8\xa0\xba\xfe\xa5\x99\xb4\x17\x0e\x24\xa2\x9c\xba\xe0\xa6\x9e\x40\x10\x10\x45\x99\x9b\xc2\x6d\xaa\xab\x26\x0f\x17\xae\x93\x9c\x6a\x48\xb2\xc3\x1c\x0f\x23\x9c\x90\xa2\x37\x38\xbf\x4b\x19\x14\x4b\x93\x90\xb1\x27\x2e\xd8\x36\x19\x1c\xad\x8e\x94\x52\x1d\x2b\x7d\x30\x1b\x2a\x9c\x8d\x9c\x28\x19\x2b\xe7\x31\x20\x5a\x95\x8f\xad\x1a\x16\x32\xc8\x39\x2b\xb2\x91\x94\x46\x13\x17\x4a\xb6\x48\x3c"));
# pause
snd($sock_a, $port_b, rtp(0, 1008, 4280, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1008, 4280, $ssrc, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1008, 4280, $ssrc, "\xff" x 160));
snd($sock_a, $port_b, rtp(0, 1009, 4440, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1009, 4440, $ssrc, "\xff" x 160));
snd($sock_a, $port_b, rtp(0, 1010, 4600, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1010, 4600, $ssrc, "\xff" x 160));
snd($sock_a, $port_b, rtp(0, 1011, 4760, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1011, 4760, $ssrc, "\xff" x 160));
snd($sock_a, $port_b, rtp(0, 1012, 4920, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1012, 4920, $ssrc, "\xff" x 160));
snd($sock_a, $port_b, rtp(0, 1013, 5080, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(0, 1013, 5080, $ssrc, "\xff" x 80 . "\x00" x 80));
@ -641,7 +652,7 @@ snd($sock_b, $port_a, rtp(0, 4001, 8160, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4001, 8160, $ssrc, "\x00" x 160));
$resp = rtpe_req('play DTMF', 'inject DTMF towards A',
{ 'from-tag' => $tt, code => '4', volume => 3, duration => 150 });
{ 'from-tag' => $tt, code => '4', volume => 3, duration => 150, pause => 100 });
snd($sock_b, $port_a, rtp(0, 4002, 8320, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4002, 8320, $ssrc, "\xff\x90\x8a\x93\xd9\x1b\x18\x27\x65\xe5\x33\x29\x4c\x9e\x8f\x91\xb8\x15\x09\x0d\x32\x98\x8e\x96\xbb\x2c\x2b\x4c\xd8\x34\x1c\x18\x2e\x9d\x8c\x8c\xa5\x1a\x0b\x0d\x27\xa3\x97\x9e\xbd\x4f\xc4\xaa\xb2\x2c\x12\x0e\x1e\xa1\x8b\x8a\x9c\x25\x0e\x10\x25\xb7\xa7\xb7\x5e\xcb\xa2\x98\x9f\x30\x0f\x0a\x16\xae\x8d\x8a\x98\x3a\x18\x19\x2c\xdd\xfd\x30\x2b\xce\x99\x8e\x95\x4c\x0f\x09\x10\xdf\x93\x8e\x9a\xec\x28\x2c\x56\xee\x2d\x1a\x1a\x48\x97\x8b\x8e\xba\x14\x0a\x0f\x39\x9d\x96\xa1\xcd\x4e\xbe\xab\xbe\x23\x10\x10\x2b\x99\x8a\x8c\xa7\x1b\x0d\x12\x2f\xad\xa7\xbc\x5e\xbd\x9f\x99\xa8\x23\x0d\x0b\x1d\x9f\x8b\x8c\x9f\x29\x16\x1b\x34\xcd\x60\x2f\x2f\xb6\x96"));
@ -658,7 +669,18 @@ rcv($sock_a, $port_b, rtpm(0, 4007, 9120, $ssrc, "\x24\x9b\x8a\x8b\xa2\x1f\x10\x
snd($sock_b, $port_a, rtp(0, 4008, 9280, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4008, 9280, $ssrc, "\x97\x98\xc7\x16\x0a\x0e\x3a\x94\x8a\x90\xbb\x1e\x1a\x27\x56\x6f\x2f\x25\x3b\xa0\x8e\x8f\xaa\x19\x09\x0c\x28\x9c\x8f\x95\xb2\x31\x2e\x59\xcc\x37\x1b\x16\x26\xa1\x8c\x8b\x9d\x1f\x0c\x0c\x20\xab\x99\x9e\xbb\x5d\xbe\xa7\xac\x32\x13\x0d\x1a\xab\x8c\x89\x97\x2e\x10\x10\x21\xc3\xab\xbc\x4f\xd4\xa2\x96\x9c\x3f\x10\x0a\x12\xc4\x8f\x8a\x95\x57\x1b\x1a\x2b\xfd\x5d\x2d\x27\x62\x9b\x8e\x92\xc9\x12\x09\x0e\x3f\x97\x8e\x98\xc6\x2c\x2f\x6b\xd9\x2e\x1a\x18\x34\x9a\x8b\x8d\xab\x18\x0a\x0e\x2d\xa1\x98\xa1\xc7\x5b\xb9\xa7\xb4\x27\x10\x0e\x22\x9d\x8a\x8b\x9f\x20\x0e\x12\x2a\xb4\xaa\xc0\x50\xc0\x9e\x97\xa1\x2a\x0e\x0a\x19\xa8\x8c\x8b\x9b\x31\x18\x1b\x31"));
snd($sock_b, $port_a, rtp(0, 4009, 9440, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4009, 9440, $ssrc, "\xda\x50\x2c\x2b\xc0\x97\x8e\x97\x39\x0e\x09\x13\xbf\x92\x8e\x9c\x57\x29\x31\xef\x72\x28\x19\x1b\x6d\x94\x8a\x8f\xce\x11\x0a\x11\x48\x9c\x98\xa5\xdc\x5e\xb5\xa9\xc6\x1f\x0f\x10\x31\x96\x89\x8d\xad\x19\x0e\x15\x37\xac\xaa\xc8\x57\xb7\x9c\x98\xac\x1e\x0c\x0c\x21\x9c\x8b\x8d\xa4\x25\x17\x1d\x3b\xcf\x48\x2b\x30\xae\x93\x8e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"));
rcv($sock_a, $port_b, rtpm(0, 4009, 9440, $ssrc, "\xda\x50\x2c\x2b\xc0\x97\x8e\x97\x39\x0e\x09\x13\xbf\x92\x8e\x9c\x57\x29\x31\xef\x72\x28\x19\x1b\x6d\x94\x8a\x8f\xce\x11\x0a\x11\x48\x9c\x98\xa5\xdc\x5e\xb5\xa9\xc6\x1f\x0f\x10\x31\x96\x89\x8d\xad\x19\x0e\x15\x37\xac\xaa\xc8\x57\xb7\x9c\x98\xac\x1e\x0c\x0c\x21\x9c\x8b\x8d\xa4\x25\x17\x1d\x3b\xcf\x48\x2b\x30\xae\x93\x8e" . "\xff" x 80));
# pause
snd($sock_b, $port_a, rtp(0, 4010, 9600, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4010, 9600, $ssrc, "\xff" x 160));
snd($sock_b, $port_a, rtp(0, 4011, 9760, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4011, 9760, $ssrc, "\xff" x 160));
snd($sock_b, $port_a, rtp(0, 4012, 9920, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4012, 9920, $ssrc, "\xff" x 160));
snd($sock_b, $port_a, rtp(0, 4013, 10080, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4013, 10080, $ssrc, "\xff" x 160));
snd($sock_b, $port_a, rtp(0, 4014, 10240, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4014, 10240, $ssrc, "\xff" x 80 . "\x00" x 80));
@ -731,8 +753,20 @@ snd($sock_a, $port_b, rtp(0, 1006, 3960, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(8, 1006, 3960, $ssrc, "\xf0\xe2\xb7\xb1\x14\x3a\x3b\x61\xb6\x88\xf3\xeb\xb5\x8d\x09\x24\x32\x85\xbd\x89\x5c\xe2\x8c\x95\x30\x24\x0e\xb7\xb9\x83\x68\xc3\x85\x6e\x3f\x38\x7a\xbe\xb9\x92\x05\x7a\x95\x07\x3e\x30\x86\xa5\xbd\x7c\x0f\x15\xcb\x0d\x3d\x03\xb1\xa4\xb4\x01\x34\x11\x40\x0f\x36\x48\xb9\xa5\x85\x37\x36\x14\x45\x02\x0f\x84\xa5\xbe\x6d\x3c\x36\x7d\xf1\x04\x1c\xb5\xa5\xb7\x09\x3b\x35\xed\xea\x13\x57\xb0\xb8\x9b\x3d\x3a\x00\x84\x9e\x66\x97\xb2\xb2\x15\x3a\x38\x60\x8b\x87\x58\x98\xb0\x88\x08\x24\x32\x9e\xb1\x86\x54\x9a\xb7\x90\x32\x24\x0e\xb5\xb2\x84\x73\x9f\x8c\x68\x38\x3b\x61\xbc\xbd\x96\x14\x94\x99\x03\x3b\x32\x87\xba\xb3\x48\x1a\xf2\xe5\x0a\x39\x0c\xb1"));
snd($sock_a, $port_b, rtp(0, 1007, 4120, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(8, 1007, 4120, $ssrc, "\xa4\xb5\x1a\x02\x4c\x7f\x37\x32\x7c\xb9\xa5\x9a\x0a\x09\x7e\x6e\x34\x35\x87\xa5\xbe\x67\x33\x0b\x48\x6e\x08\x05\xb7\xa4\xb6\x0f\x3f\x0e\xfe\x79\x00\x5a\xbd\xa5\x85\x32\x39\x07\x92\xcd\x1d\x9d\xbe\xbc\x69\x3b\x3e\x60\x80\xef\x66\x80\xbf\xb5\x08\x24\x30\x90\x8b\x91\xd5\x8c\xb3\x9f\x3d\x24\x0e\x89\xb7\x91\xc2\x8c\xb5\x68\x3b\x3a\x6d\xb3\xb1\xee\x5c\x81\x81\x0c\x25\x3d\x85\xb9\xb7\x58\x60\x99\xef\x37\x3a\x0e\xb6\xba\x89\x12\x13\xeb\x67\x33\x3e\x67\xb9\xba\x98\x02\x05\xf7\x1d\x33\x36\x87\xa4\xbe\x7c\x34\x01\x54\x1a\x31\x01\xb6\xa4\xb6\x03\x33\x06\xda\x18\x0a\x75\xbf\xa5\x84\x31\x3d\x19\xe0\x10\x01\x99\xbb\xbe\x62\x39\x3d\x66\x9d\x60\x17"));
# pause
snd($sock_a, $port_b, rtp(0, 1008, 4280, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(8, 1008, 4280, $ssrc, "\x2a" x 160));
rcv($sock_b, $port_a, rtpm(8, 1008, 4280, $ssrc, "\xd5" x 160));
snd($sock_a, $port_b, rtp(0, 1009, 4440, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(8, 1009, 4440, $ssrc, "\xd5" x 160));
snd($sock_a, $port_b, rtp(0, 1010, 4600, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(8, 1010, 4600, $ssrc, "\xd5" x 160));
snd($sock_a, $port_b, rtp(0, 1011, 4760, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(8, 1011, 4760, $ssrc, "\xd5" x 160));
snd($sock_a, $port_b, rtp(0, 1012, 4920, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(8, 1012, 4920, $ssrc, "\xd5" x 160));
snd($sock_a, $port_b, rtp(0, 1013, 5080, 0x1234, "\x00" x 160));
rcv($sock_b, $port_a, rtpm(8, 1013, 5080, $ssrc, "\x2a" x 160));
@ -759,9 +793,18 @@ rcv($sock_a, $port_b, rtpm(0, 4007, 9120, $ssrc, "\x24\x9b\x8a\x8b\xa2\x1f\x10\x
snd($sock_b, $port_a, rtp(8, 4008, 9280, 0x6543, "\x2a" x 160));
rcv($sock_a, $port_b, rtpm(0, 4008, 9280, $ssrc, "\x97\x98\xc7\x16\x0a\x0e\x3a\x94\x8a\x90\xbb\x1e\x1a\x27\x56\x6f\x2f\x25\x3b\xa0\x8e\x8f\xaa\x19\x09\x0c\x28\x9c\x8f\x95\xb2\x31\x2e\x59\xcc\x37\x1b\x16\x26\xa1\x8c\x8b\x9d\x1f\x0c\x0c\x20\xab\x99\x9e\xbb\x5d\xbe\xa7\xac\x32\x13\x0d\x1a\xab\x8c\x89\x97\x2e\x10\x10\x21\xc3\xab\xbc\x4f\xd4\xa2\x96\x9c\x3f\x10\x0a\x12\xc4\x8f\x8a\x95\x57\x1b\x1a\x2b\xfd\x5d\x2d\x27\x62\x9b\x8e\x92\xc9\x12\x09\x0e\x3f\x97\x8e\x98\xc6\x2c\x2f\x6b\xd9\x2e\x1a\x18\x34\x9a\x8b\x8d\xab\x18\x0a\x0e\x2d\xa1\x98\xa1\xc7\x5b\xb9\xa7\xb4\x27\x10\x0e\x22\x9d\x8a\x8b\x9f\x20\x0e\x12\x2a\xb4\xaa\xc0\x50\xc0\x9e\x97\xa1\x2a\x0e\x0a\x19\xa8\x8c\x8b\x9b\x31\x18\x1b\x31"));
snd($sock_b, $port_a, rtp(8, 4009, 9440, 0x6543, "\x2a" x 160));
rcv($sock_a, $port_b, rtpm(0, 4009, 9440, $ssrc, "\xda\x50\x2c\x2b\xc0\x97\x8e\x97\x39\x0e\x09\x13\xbf\x92\x8e\x9c\x57\x29\x31\xef\x72\x28\x19\x1b\x6d\x94\x8a\x8f\xce\x11\x0a\x11\x48\x9c\x98\xa5\xdc\x5e\xb5\xa9\xc6\x1f\x0f\x10\x31\x96\x89\x8d\xad\x19\x0e\x15\x37\xac\xaa\xc8\x57\xb7\x9c\x98\xac\x1e\x0c\x0c\x21\x9c\x8b\x8d\xa4\x25\x17\x1d\x3b\xcf\x48\x2b\x30\xae\x93\x8e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"));
rcv($sock_a, $port_b, rtpm(0, 4009, 9440, $ssrc, "\xda\x50\x2c\x2b\xc0\x97\x8e\x97\x39\x0e\x09\x13\xbf\x92\x8e\x9c\x57\x29\x31\xef\x72\x28\x19\x1b\x6d\x94\x8a\x8f\xce\x11\x0a\x11\x48\x9c\x98\xa5\xdc\x5e\xb5\xa9\xc6\x1f\x0f\x10\x31\x96\x89\x8d\xad\x19\x0e\x15\x37\xac\xaa\xc8\x57\xb7\x9c\x98\xac\x1e\x0c\x0c\x21\x9c\x8b\x8d\xa4\x25\x17\x1d\x3b\xcf\x48\x2b\x30\xae\x93\x8e" . "\xff" x 80));
# pause
snd($sock_b, $port_a, rtp(0, 4010, 9600, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4010, 9600, $ssrc, "\xff" x 160));
snd($sock_b, $port_a, rtp(0, 4011, 9760, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4011, 9760, $ssrc, "\xff" x 160));
snd($sock_b, $port_a, rtp(0, 4012, 9920, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4012, 9920, $ssrc, "\xff" x 160));
snd($sock_b, $port_a, rtp(0, 4013, 10080, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4013, 10080, $ssrc, "\xff" x 160));
snd($sock_b, $port_a, rtp(0, 4014, 10240, 0x6543, "\x00" x 160));
rcv($sock_a, $port_b, rtpm(0, 4014, 10240, $ssrc, "\xff" x 80 . "\x00" x 80));


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