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Various changes of RTP timeout handling to handle timeouts on single streams #1403

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Various changes of RTP timeout handling to handle timeouts on single streams #1403

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36 changes: 31 additions & 5 deletions daemon/call.c
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Original file line number Diff line number Diff line change
Expand Up @@ -145,7 +145,8 @@ void call_make_own_foreign(struct call *c, bool foreign) {
static void call_timer_iterator(struct call *c, struct iterator_helper *hlp) {
GList *it;
unsigned int check;
bool good = false;
bool good = false; // gets true if any stream has active media
bool failed = false; // gets true if any stream has a timeout event
struct packet_stream *ps;
struct stream_fd *sfd;
int tmp_t_reason = UNKNOWN;
Expand Down Expand Up @@ -176,6 +177,12 @@ static void call_timer_iterator(struct call *c, struct iterator_helper *hlp) {
goto out;
}

if (c->timeout_mode == TIMEOUT_OFF)
goto out;

if (c->timeout_activated > rtpe_now.tv_sec)
goto out;

if (c->deleted && rtpe_now.tv_sec >= c->deleted
&& c->last_signal <= c->deleted)
goto delete;
Expand Down Expand Up @@ -206,6 +213,16 @@ static void call_timer_iterator(struct call *c, struct iterator_helper *hlp) {

/* valid stream */

// ignore RTCP Streams
if (PS_ISSET(ps, RTCP))
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I think it might be more appropriate to use if (!PS_ISSET(ps, RTP)) here? (Streams can be both RTP and RTCP in case of RTCP-mux)

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Yes, this sounds better. I hadn't RTCP-mux in mind, because it's not used in our case.

goto next;

// ignore Streams which are already marked fot deletion
if (ps->media->monologue->mark_deleted) {
ilog(LOG_DEBUG, "Ignoring deleted monologue");
goto next;
}

css = call_stream_state_machine(ps);

if (css == CSS_ICE)
Expand All @@ -216,12 +233,12 @@ static void call_timer_iterator(struct call *c, struct iterator_helper *hlp) {
g_hash_table_insert(hlp->addr_sfd, &sfd->socket.local, obj_get(sfd));

no_sfd:
if (good)
if (failed && c->timeout_mode == TIMEOUT_ANY)
goto next;

check = rtpe_config.timeout;
tmp_t_reason = TIMEOUT;
if (!MEDIA_ISSET(ps->media, RECV) || !sfd) {
if (!MEDIA_ISSET(ps->media, RECV) || !sfd || !MEDIA_ISSET(ps->media, SEND)) {
check = rtpe_config.silent_timeout;
tmp_t_reason = SILENT_TIMEOUT;
}
Expand All @@ -230,8 +247,14 @@ static void call_timer_iterator(struct call *c, struct iterator_helper *hlp) {
tmp_t_reason = OFFER_TIMEOUT;
}

if (rtpe_now.tv_sec - atomic64_get(timestamp) < check)
if (rtpe_now.tv_sec - atomic64_get(timestamp) < check) {
ps->missed_packet_counter = 0;
good = true;
} else {
ps->missed_packet_counter++;
if (ps->missed_packet_counter > 2)
failed = true;
}

next:
;
Expand All @@ -243,7 +266,7 @@ static void call_timer_iterator(struct call *c, struct iterator_helper *hlp) {
hlp->transcoded_media++;
}

if (good || IS_FOREIGN_CALL(c)) {
if (!failed || (good && (c->timeout_mode == TIMEOUT_ALL)) || IS_FOREIGN_CALL(c)) {
goto out;
}

Expand Down Expand Up @@ -3418,6 +3441,8 @@ static struct call *call_create(const str *callid) {
c->created = rtpe_now;
c->dtls_cert = dtls_cert();
c->tos = rtpe_config.default_tos;
c->timeout_mode = rtpe_config.timeout_mode;
c->timeout_activated = rtpe_now.tv_sec;
if (rtpe_config.cpu_affinity)
c->cpu_affinity = call_socket_cpu_affinity++ % rtpe_config.cpu_affinity;
else
Expand Down Expand Up @@ -4022,6 +4047,7 @@ int call_delete_branch(const str *callid, const str *branch,
"(via-branch '" STR_FORMAT_M "') in %d seconds",
STR_FMT_M(&ml->tag), STR_FMT0_M(branch), delete_delay);
ml->deleted = rtpe_now.tv_sec + delete_delay;
ml->mark_deleted = 1;
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I'm not 100% sure, but could ml->deleted != 0 be used as a test for this instead of adding a new flag?

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As far as i remember i first tried it this way but there was an issue with it but i currently don't know what it was.
I need to make some tests and see, if i can reproduce the issues i had.

if (!c->ml_deleted || c->ml_deleted > ml->deleted)
c->ml_deleted = ml->deleted;
}
Expand Down
41 changes: 41 additions & 0 deletions daemon/call_interfaces.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1120,6 +1120,26 @@ static void call_ng_process_flags(struct sdp_ng_flags *out, bencode_item_t *inpu
}
}

out->timeout_mode = TIMEOUT_DEFAULT;
if (bencode_dictionary_get_str(input, "timeout", &s)) {
switch (__csh_lookup(&s)) {
case CSH_LOOKUP("off"):
out->timeout_mode=TIMEOUT_OFF;
break;
case CSH_LOOKUP("multi"):
case CSH_LOOKUP("all"):
out->timeout_mode=TIMEOUT_ALL;
break;
case CSH_LOOKUP("any"):
case CSH_LOOKUP("single"):
out->timeout_mode=TIMEOUT_ANY;
break;
default:
ilog(LOG_WARN, "Unknown 'timeout' flag encountered: '"STR_FORMAT"'",
STR_FMT(&s));
}
}

call_ng_flags_list(out, input, "rtcp-mux", call_ng_flags_rtcp_mux, NULL);
call_ng_flags_list(out, input, "RTCP-mux", call_ng_flags_rtcp_mux, NULL);
call_ng_flags_list(out, input, "SDES", ng_sdes_option, NULL);
Expand Down Expand Up @@ -1503,6 +1523,27 @@ static const char *call_offer_answer_ng(struct ng_buffer *ngbuf, bencode_item_t
call->drop_traffic = 0;
}

switch (flags.timeout_mode) {
case TIMEOUT_DEFAULT:
// NO CHANGE
break;
case TIMEOUT_OFF:
ilog(LOG_INFO, "Disable RTP timeout monitoring");
call->timeout_mode = TIMEOUT_OFF;
call->timeout_activated = 0;
break;
case TIMEOUT_ANY:
ilog(LOG_INFO, "Activating RTP any timeout monitoring");
call->timeout_mode = TIMEOUT_ANY;
call->timeout_activated = rtpe_now.tv_sec + rtpe_config.timeout;
break;
case TIMEOUT_ALL:
ilog(LOG_INFO, "Activating RTP all timeout monitoring");
call->timeout_mode = TIMEOUT_ALL;
call->timeout_activated = rtpe_now.tv_sec + rtpe_config.timeout;
break;
}

int do_dequeue = 1;

ret = monologue_offer_answer(dialogue, &streams, &flags);
Expand Down
15 changes: 15 additions & 0 deletions daemon/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -428,6 +428,7 @@ static void options(int *argc, char ***argv) {
AUTO_CLEANUP_GBUF(dtmf_udp_ep);
AUTO_CLEANUP_GBUF(endpoint_learning);
AUTO_CLEANUP_GBUF(dtls_sig);
AUTO_CLEANUP_GBUF(timeout_mode);
double silence_detect = 0;
AUTO_CLEANUP_GVBUF(cn_payload);
AUTO_CLEANUP_GVBUF(dtx_cn_params);
Expand Down Expand Up @@ -460,6 +461,7 @@ static void options(int *argc, char ***argv) {
{ "silent-timeout",'s',0,G_OPTION_ARG_INT, &rtpe_config.silent_timeout,"RTP timeout for muted", "SECS" },
{ "final-timeout",'a',0,G_OPTION_ARG_INT, &rtpe_config.final_timeout, "Call timeout", "SECS" },
{ "offer-timeout",0,0, G_OPTION_ARG_INT, &rtpe_config.offer_timeout, "Timeout for incomplete one-sided calls", "SECS" },
{ "timeout-mode", 0, 0, G_OPTION_ARG_STRING, &timeout_mode, "Timeout Mode", "off|any|all" },
{ "port-min", 'm', 0, G_OPTION_ARG_INT, &rtpe_config.port_min, "Lowest port to use for RTP", "INT" },
{ "port-max", 'M', 0, G_OPTION_ARG_INT, &rtpe_config.port_max, "Highest port to use for RTP", "INT" },
{ "redis", 'r', 0, G_OPTION_ARG_STRING, &redisps, "Connect to Redis database", "[PW@]IP:PORT/INT" },
Expand Down Expand Up @@ -684,6 +686,19 @@ static void options(int *argc, char ***argv) {
if (rtpe_config.final_timeout <= 0)
rtpe_config.final_timeout = 0;

int to_config = TIMEOUT_ALL;
if (timeout_mode) {
if (!strcasecmp(timeout_mode, "all"))
to_config = TIMEOUT_ALL;
else if (!strcasecmp(timeout_mode, "any"))
to_config = TIMEOUT_ANY;
else if (!strcasecmp(timeout_mode, "off"))
to_config = TIMEOUT_OFF;
else
die("Invalid --timeout-mode option ('%s')", timeout_mode);
}
rtpe_config.timeout_mode = to_config;

if (redisps)
if (redis_ep_parse(&rtpe_config.redis_ep, &rtpe_config.redis_db, &rtpe_config.redis_auth, "RTPENGINE_REDIS_AUTH_PW", redisps))
die("Invalid Redis endpoint [IP:PORT/INT] '%s' (--redis)", redisps);
Expand Down
6 changes: 6 additions & 0 deletions include/call.h
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Original file line number Diff line number Diff line change
Expand Up @@ -342,6 +342,8 @@ struct packet_stream {

/* in_lock must be held for SETTING these: */
volatile unsigned int ps_flags;

unsigned int missed_packet_counter;
};

/* protected by call->master_lock, except the RO elements */
Expand Down Expand Up @@ -441,6 +443,7 @@ struct call_monologue {
unsigned int silence_media:1;
unsigned int rec_forwarding:1;
unsigned int inject_dtmf:1;
unsigned int mark_deleted:1;
};

struct call_iterator_list {
Expand Down Expand Up @@ -546,6 +549,9 @@ struct call {
unsigned int foreign_media:1; // for calls taken over, tracks whether we have media
unsigned int disable_jb:1;
unsigned int debug:1;

int timeout_mode;
time_t timeout_activated;
};


Expand Down
6 changes: 6 additions & 0 deletions include/call_interfaces.h
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Expand Up @@ -74,6 +74,12 @@ struct sdp_ng_flags {
MEO_BKW,
MEO_BOTH,
} media_echo:3;
enum {
TIMEOUT_DEFAULT = 0,
TIMEOUT_OFF,
TIMEOUT_ALL,
TIMEOUT_ANY
} timeout_mode:2;
unsigned int asymmetric:1,
protocol_accept:1,
no_redis_update:1,
Expand Down
1 change: 1 addition & 0 deletions include/main.h
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Expand Up @@ -39,6 +39,7 @@ struct rtpengine_config {
int silent_timeout;
int final_timeout;
int offer_timeout;
int timeout_mode;
int delete_delay;
GQueue redis_subscribed_keyspaces;
int redis_expires_secs;
Expand Down