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add preliminary support for SIP timers (issue #4359)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6362 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.2-netsec
Kevin P. Fleming 20 years ago
parent c9287324ea
commit 3480297607
3 changed files with 218 additions and 72 deletions
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261
channels/chan_sip.c
Unescape View File

@ -111,8 +111,9 @@ static int default_expiry = DEFAULT_DEFAULT_EXPIRY;
#define DEFAULT_FREQ_OK 60 * 1000 /* How often to check for the host to be up */
#define DEFAULT_FREQ_NOTOK 10 * 1000 /* How often to check, if the host is down... */
#define DEFAULT_RETRANS 2000 /* How frequently to retransmit */
#define MAX_RETRANS 5 /* Try only 5 times for retransmissions */
#define DEFAULT_RETRANS 1000 /* How frequently to retransmit */
/* 2 * 500 ms in RFC 3261 */
#define MAX_RETRANS 7 /* Try only 7 times for retransmissions */
#define DEBUG_READ 0 /* Recieved data */
@ -364,6 +365,7 @@ static int videosupport = 0;
static int compactheaders = 0; /* send compact sip headers */
static int recordhistory = 0; /* Record SIP history. Off by default */
static int dumphistory = 0; /* Dump history to verbose before destroying SIP dialog */
static char global_musicclass[MAX_MUSICCLASS] = ""; /* Global music on hold class */
#define DEFAULT_REALM "asterisk"
@ -505,6 +507,7 @@ static struct sip_pvt {
ast_group_t pickupgroup; /* Pickup group */
int lastinvite; /* Last Cseq of invite */
unsigned int flags; /* SIP_ flags */
int timer_t1; /* SIP timer T1, ms rtt */
unsigned int sipoptions; /* Supported SIP sipoptions on the other end */
int capability; /* Special capability (codec) */
int jointcapability; /* Supported capability at both ends (codecs ) */
@ -609,6 +612,8 @@ struct sip_pkt {
unsigned int flags; /* non-zero if this is a response packet (e.g. 200 OK) */
struct sip_pvt *owner; /* Owner call */
int retransid; /* Retransmission ID */
int timer_a; /* SIP timer A, retransmission timer */
int timer_t1; /* SIP Timer T1, estimated RTT or 500 ms */
int packetlen; /* Length of packet */
char data[0];
};
@ -823,6 +828,7 @@ static struct sip_auth *add_realm_authentication(struct sip_auth *authlist, char
static struct sip_auth *find_realm_authentication(struct sip_auth *authlist, char *realm); /* Find authentication for a specific realm */
static void append_date(struct sip_request *req); /* Append date to SIP packet */
static int determine_firstline_parts(struct sip_request *req);
static void sip_dump_history(struct sip_pvt *dialog); /* Dump history to LOG_DEBUG at end of dialog, before destroying data */
/* Definition of this channel for channel registration */
static const struct ast_channel_tech sip_tech = {
@ -1036,69 +1042,111 @@ static int append_history(struct sip_pvt *p, char *event, char *data)
/*--- retrans_pkt: Retransmit SIP message if no answer ---*/
static int retrans_pkt(void *data)
{
struct sip_pkt *pkt=data, *prev, *cur;
int res = 0;
struct sip_pkt *pkt=data, *prev, *cur = NULL;
char iabuf[INET_ADDRSTRLEN];
int reschedule = DEFAULT_RETRANS;
/* Lock channel */
ast_mutex_lock(&pkt->owner->lock);
if (pkt->retrans < MAX_RETRANS) {
char buf[80];
pkt->retrans++;
if (sip_debug_test_pvt(pkt->owner)) {
if (!pkt->timer_t1) { /* Re-schedule using timer_a and timer_t1 */
if (sipdebug && option_debug > 3)
ast_log(LOG_DEBUG, "SIP TIMER: Not rescheduling id #%d:%s (Method %d) (No timer T1)\n", pkt->retransid, sip_methods[pkt->method].text, pkt->method);
} else {
int siptimer_a;
if (sipdebug && option_debug > 3)
ast_log(LOG_DEBUG, "SIP TIMER: Rescheduling retransmission #%d (%d) %s - %d\n", pkt->retransid, pkt->retrans, sip_methods[pkt->method].text, pkt->method);
if (!pkt->timer_a)
pkt->timer_a = 2 ;
else
pkt->timer_a = 2 * pkt->timer_a;
/* For non-invites, a maximum of 4 secs */
if (pkt->method != SIP_INVITE && pkt->timer_a > 4000)
pkt->timer_a = 4000;
siptimer_a = pkt->timer_t1 * pkt->timer_a; /* Double each time */
/* Reschedule re-transmit */
reschedule = siptimer_a;
if (option_debug > 3)
ast_log(LOG_DEBUG, "** SIP timers: Rescheduling retransmission %d to %d ms (t1 %d ms (Retrans id #%d)) \n", pkt->retrans +1, siptimer_a, pkt->timer_t1, pkt->retransid);
}
if (pkt->owner && sip_debug_test_pvt(pkt->owner)) {
if (ast_test_flag(pkt->owner, SIP_NAT) & SIP_NAT_ROUTE)
ast_verbose("Retransmitting #%d (NAT) to %s:%d:\n%s\n---\n", pkt->retrans, ast_inet_ntoa(iabuf, sizeof(iabuf), pkt->owner->recv.sin_addr), ntohs(pkt->owner->recv.sin_port), pkt->data);
else
ast_verbose("Retransmitting #%d (no NAT) to %s:%d:\n%s\n---\n", pkt->retrans, ast_inet_ntoa(iabuf, sizeof(iabuf), pkt->owner->sa.sin_addr), ntohs(pkt->owner->sa.sin_port), pkt->data);
}
append_history(pkt->owner, "ReTx", pkt->data);
snprintf(buf, sizeof(buf), "ReTx %d", reschedule);
append_history(pkt->owner, buf, pkt->data);
__sip_xmit(pkt->owner, pkt->data, pkt->packetlen);
res = 1;
} else {
ast_mutex_unlock(&pkt->owner->lock);
return reschedule;
}
/* Too many retries */
if (pkt->owner && pkt->method != SIP_OPTIONS) {
ast_log(LOG_WARNING, "Maximum retries exceeded on call %s for seqno %d (%s %s)\n", pkt->owner->callid, pkt->seqno, (ast_test_flag(pkt, FLAG_FATAL)) ? "Critical" : "Non-critical", (ast_test_flag(pkt, FLAG_RESPONSE)) ? "Response" : "Request");
append_history(pkt->owner, "MaxRetries", (ast_test_flag(pkt, FLAG_FATAL)) ? "(Critical)" : "(Non-critical)");
pkt->retransid = -1;
if (ast_test_flag(pkt, FLAG_FATAL)) {
while(pkt->owner->owner && ast_mutex_trylock(&pkt->owner->owner->lock)) {
ast_mutex_unlock(&pkt->owner->lock);
usleep(1);
ast_mutex_lock(&pkt->owner->lock);
}
if (pkt->owner->owner) {
ast_set_flag(pkt->owner, SIP_ALREADYGONE);
ast_queue_hangup(pkt->owner->owner);
ast_mutex_unlock(&pkt->owner->owner->lock);
} else {
/* If no owner, destroy now */
ast_set_flag(pkt->owner, SIP_NEEDDESTROY);
}
} else {
if (pkt->method == SIP_OPTIONS && sipdebug)
ast_log(LOG_WARNING, "Cancelling retransmit of OPTIONs (call id %s) \n", pkt->owner->callid);
}
append_history(pkt->owner, "MaxRetries", (ast_test_flag(pkt, FLAG_FATAL)) ? "(Critical)" : "(Non-critical)");
pkt->retransid = -1;
if (ast_test_flag(pkt, FLAG_FATAL)) {
while(pkt->owner->owner && ast_mutex_trylock(&pkt->owner->owner->lock)) {
ast_mutex_unlock(&pkt->owner->lock);
usleep(1);
ast_mutex_lock(&pkt->owner->lock);
}
/* In any case, go ahead and remove the packet */
prev = NULL;
cur = pkt->owner->packets;
while(cur) {
if (cur == pkt)
break;
prev = cur;
cur = cur->next;
if (pkt->owner->owner) {
ast_set_flag(pkt->owner, SIP_ALREADYGONE);
ast_log(LOG_WARNING, "Hanging up call %s - no reply to our critical packet.\n", pkt->owner->callid);
ast_queue_hangup(pkt->owner->owner);
ast_mutex_unlock(&pkt->owner->owner->lock);
} else {
/* If no channel owner, destroy now */
ast_set_flag(pkt->owner, SIP_NEEDDESTROY);
}
if (cur) {
if (prev)
prev->next = cur->next;
else
pkt->owner->packets = cur->next;
ast_mutex_unlock(&pkt->owner->lock);
free(cur);
pkt = NULL;
} else
ast_log(LOG_WARNING, "Weird, couldn't find packet owner!\n");
}
/* In any case, go ahead and remove the packet */
prev = NULL;
cur = pkt->owner->packets;
while(cur) {
if (cur == pkt)
break;
prev = cur;
cur = cur->next;
}
if (cur) {
if (prev)
prev->next = cur->next;
else
pkt->owner->packets = cur->next;
ast_mutex_unlock(&pkt->owner->lock);
free(cur);
pkt = NULL;
} else
ast_log(LOG_WARNING, "Weird, couldn't find packet owner!\n");
if (pkt)
ast_mutex_unlock(&pkt->owner->lock);
return res;
return 0;
}
/*--- __sip_reliable_xmit: transmit packet with retransmits ---*/
static int __sip_reliable_xmit(struct sip_pvt *p, int seqno, int resp, char *data, int len, int fatal, int sipmethod)
{
struct sip_pkt *pkt;
int siptimer_a = DEFAULT_RETRANS;
pkt = malloc(sizeof(struct sip_pkt) + len + 1);
if (!pkt)
return -1;
@ -1111,10 +1159,16 @@ static int __sip_reliable_xmit(struct sip_pvt *p, int seqno, int resp, char *dat
pkt->seqno = seqno;
pkt->flags = resp;
pkt->data[len] = '\0';
pkt->timer_t1 = p->timer_t1; /* Set SIP timer T1 */
if (fatal)
ast_set_flag(pkt, FLAG_FATAL);
if (pkt->timer_t1)
siptimer_a = pkt->timer_t1 * 2;
/* Schedule retransmission */
pkt->retransid = ast_sched_add(sched, DEFAULT_RETRANS, retrans_pkt, pkt);
pkt->retransid = ast_sched_add_variable(sched, siptimer_a, retrans_pkt, pkt, 1);
if (option_debug > 3 && sipdebug)
ast_log(LOG_DEBUG, "*** SIP TIMER: Initalizing retransmit timer on packet: Id #%d\n", pkt->retransid);
pkt->next = p->packets;
p->packets = pkt;
@ -1185,6 +1239,7 @@ static int __sip_ack(struct sip_pvt *p, int seqno, int resp, int sipmethod)
if ((cur->seqno == seqno) && ((ast_test_flag(cur, FLAG_RESPONSE)) == resp) &&
((ast_test_flag(cur, FLAG_RESPONSE)) ||
(!strncasecmp(msg, cur->data, strlen(msg)) && (cur->data[strlen(msg)] < 33)))) {
ast_mutex_lock(&p->lock);
if (!resp && (seqno == p->pendinginvite)) {
ast_log(LOG_DEBUG, "Acked pending invite %d\n", p->pendinginvite);
p->pendinginvite = 0;
@ -1195,16 +1250,20 @@ static int __sip_ack(struct sip_pvt *p, int seqno, int resp, int sipmethod)
prev->next = cur->next;
else
p->packets = cur->next;
if (cur->retransid > -1)
if (cur->retransid > -1) {
if (sipdebug && option_debug > 3)
ast_log(LOG_DEBUG, "** SIP TIMER: Cancelling retransmit of packet (reply received) Retransid #%d\n", cur->retransid);
ast_sched_del(sched, cur->retransid);
}
free(cur);
ast_mutex_unlock(&p->lock);
res = 0;
break;
}
prev = cur;
cur = cur->next;
}
ast_log(LOG_DEBUG, "Stopping retransmission on '%s' of %s %d: %s\n", p->callid, resp ? "Response" : "Request", seqno, res ? "Not Found" : "Found");
ast_log(LOG_DEBUG, "Stopping retransmission on '%s' of %s %d: Match %s\n", p->callid, resp ? "Response" : "Request", seqno, res ? "Not Found" : "Found");
return res;
}
@ -1215,7 +1274,7 @@ static int __sip_pretend_ack(struct sip_pvt *p)
while(p->packets) {
if (cur == p->packets) {
ast_log(LOG_WARNING, "Have a packet that doesn't want to give up!\n");
ast_log(LOG_WARNING, "Have a packet that doesn't want to give up! %s\n", sip_methods[cur->method].text);
return -1;
}
cur = p->packets;
@ -1246,8 +1305,11 @@ static int __sip_semi_ack(struct sip_pvt *p, int seqno, int resp, int sipmethod)
((ast_test_flag(cur, FLAG_RESPONSE)) ||
(!strncasecmp(msg, cur->data, strlen(msg)) && (cur->data[strlen(msg)] < 33)))) {
/* this is our baby */
if (cur->retransid > -1)
if (cur->retransid > -1) {
if (option_debug > 3 && sipdebug)
ast_log(LOG_DEBUG, "*** SIP TIMER: Cancelling retransmission #%d - %s (got response)\n", cur->retransid, msg);
ast_sched_del(sched, cur->retransid);
}
cur->retransid = -1;
res = 0;
break;
@ -1718,6 +1780,9 @@ static int create_addr_from_peer(struct sip_pvt *r, struct sip_peer *peer)
r->maxtime = peer->maxms;
r->callgroup = peer->callgroup;
r->pickupgroup = peer->pickupgroup;
/* Set timer T1 to RTT for this peer (if known by qualify=) */
if (peer->maxms && peer->lastms)
r->timer_t1 = peer->lastms;
if (ast_test_flag(r, SIP_DTMF) == SIP_DTMF_RFC2833)
r->noncodeccapability |= AST_RTP_DTMF;
else
@ -1733,7 +1798,7 @@ static int create_addr_from_peer(struct sip_pvt *r, struct sip_peer *peer)
/*--- create_addr: create address structure from peer name ---*/
/* Or, if peer not found, find it in the global DNS */
/* returns TRUE (-1) on failure, FALSE on success */
static int create_addr(struct sip_pvt *r, char *opeer)
static int create_addr(struct sip_pvt *dialog, char *opeer)
{
struct hostent *hp;
struct ast_hostent ahp;
@ -1750,12 +1815,13 @@ static int create_addr(struct sip_pvt *r, char *opeer)
*port = '\0';
port++;
}
r->sa.sin_family = AF_INET;
dialog->sa.sin_family = AF_INET;
dialog->timer_t1 = 500; /* Default SIP retransmission timer T1 (RFC 3261) */
p = find_peer(peer, NULL, 1);
if (p) {
found++;
if (create_addr_from_peer(r, p))
if (create_addr_from_peer(dialog, p))
ASTOBJ_UNREF(p, sip_destroy_peer);
}
if (!p) {
@ -1780,10 +1846,10 @@ static int create_addr(struct sip_pvt *r, char *opeer)
}
hp = ast_gethostbyname(hostn, &ahp);
if (hp) {
ast_copy_string(r->tohost, peer, sizeof(r->tohost));
memcpy(&r->sa.sin_addr, hp->h_addr, sizeof(r->sa.sin_addr));
r->sa.sin_port = htons(portno);
memcpy(&r->recv, &r->sa, sizeof(r->recv));
ast_copy_string(dialog->tohost, peer, sizeof(dialog->tohost));
memcpy(&dialog->sa.sin_addr, hp->h_addr, sizeof(dialog->sa.sin_addr));
dialog->sa.sin_port = htons(portno);
memcpy(&dialog->recv, &dialog->sa, sizeof(dialog->recv));
return 0;
} else {
ast_log(LOG_WARNING, "No such host: %s\n", peer);
@ -1914,6 +1980,10 @@ static void __sip_destroy(struct sip_pvt *p, int lockowner)
if (sip_debug_test_pvt(p))
ast_verbose("Destroying call '%s'\n", p->callid);
if (dumphistory)
sip_dump_history(p);
if (p->stateid > -1)
ast_extension_state_del(p->stateid, NULL);
if (p->initid > -1)
@ -1951,6 +2021,7 @@ static void __sip_destroy(struct sip_pvt *p, int lockowner)
p->history = p->history->next;
free(hist);
}
cur = iflist;
while(cur) {
if (cur == p) {
@ -1969,17 +2040,19 @@ static void __sip_destroy(struct sip_pvt *p, int lockowner)
}
if (p->initid > -1)
ast_sched_del(sched, p->initid);
while((cp = p->packets)) {
p->packets = p->packets->next;
if (cp->retransid > -1)
if (cp->retransid > -1) {
ast_sched_del(sched, cp->retransid);
}
free(cp);
}
ast_mutex_destroy(&p->lock);
if (p->chanvars) {
ast_variables_destroy(p->chanvars);
p->chanvars = NULL;
}
ast_mutex_destroy(&p->lock);
free(p);
}
@ -4680,6 +4753,11 @@ static int sip_reregister(void *data)
if (!r)
return 0;
if (recordhistory) {
char tmp[80];
snprintf(tmp, sizeof(tmp), "Account: %s@%s", r->username, r->hostname);
append_history(r->call, "RegistryRenew", tmp);
}
/* Since registry's are only added/removed by the the monitor thread, this
may be overkill to reference/dereference at all here */
if (sipdebug)
@ -4722,7 +4800,6 @@ static int sip_reg_timeout(void *data)
r->call = NULL;
ast_set_flag(p, SIP_NEEDDESTROY);
/* Pretend to ACK anything just in case */
/* OEJ: Ack what??? */
__sip_pretend_ack(p);
}
/* If we have a limit, stop registration and give up */
@ -4780,6 +4857,11 @@ static int transmit_register(struct sip_registry *r, int sipmethod, char *auth,
ast_log(LOG_WARNING, "Unable to allocate registration call\n");
return 0;
}
if (recordhistory) {
char tmp[80];
snprintf(tmp, sizeof(tmp), "Account: %s@%s", r->username, r->hostname);
append_history(p, "RegistryInit", tmp);
}
/* Find address to hostname */
if (create_addr(p,r->hostname)) {
/* we have what we hope is a temporary network error,
@ -4837,11 +4919,11 @@ static int transmit_register(struct sip_registry *r, int sipmethod, char *auth,
/* set up a timeout */
if (auth == NULL) {
if (r->timeout > -1) {
ast_log(LOG_WARNING, "Still have a registration timeout, %d\n", r->timeout);
ast_log(LOG_WARNING, "Still have a registration timeout, #%d - deleting it\n", r->timeout);
ast_sched_del(sched, r->timeout);
}
r->timeout = ast_sched_add(sched, global_reg_timeout * 1000, sip_reg_timeout, r);
ast_log(LOG_DEBUG, "Scheduled a registration timeout for %s : %d\n", r->hostname, r->timeout);
ast_log(LOG_DEBUG, "Scheduled a registration timeout for %s id #%d \n", r->hostname, r->timeout);
}
if (strchr(r->username, '@')) {
@ -7596,7 +7678,7 @@ static int sip_show_channel(int fd, int argc, char *argv[])
return RESULT_SUCCESS;
}
/*--- sip_show_channel: Show details of one call ---*/
/*--- sip_show_history: Show history details of one call ---*/
static int sip_show_history(int fd, int argc, char *argv[])
{
struct sip_pvt *cur;
@ -7613,7 +7695,7 @@ static int sip_show_history(int fd, int argc, char *argv[])
ast_mutex_lock(&iflock);
cur = iflist;
while(cur) {
if (!strncasecmp(cur->callid, argv[3],len)) {
if (!strncasecmp(cur->callid, argv[3], len)) {
ast_cli(fd,"\n");
if (cur->subscribed)
ast_cli(fd, " * Subscription\n");
@ -7638,6 +7720,34 @@ static int sip_show_history(int fd, int argc, char *argv[])
return RESULT_SUCCESS;
}
/*--- dump_history: Dump SIP history to debug log file at end of
lifespan for SIP dialog */
void sip_dump_history(struct sip_pvt *dialog)
{
int x;
struct sip_history *hist;
if (!dialog)
return;
ast_log(LOG_DEBUG, "\n---------- SIP HISTORY for '%s' \n", dialog->callid);
if (dialog->subscribed)
ast_log(LOG_DEBUG, " * Subscription\n");
else
ast_log(LOG_DEBUG, " * SIP Call\n");
x = 0;
hist = dialog->history;
while(hist) {
x++;
ast_log(LOG_DEBUG, " %d. %s\n", x, hist->event);
hist = hist->next;
}
if (!x)
ast_log(LOG_DEBUG, "Call '%s' has no history\n", dialog->callid);
ast_log(LOG_DEBUG, "\n---------- END SIP HISTORY for '%s' \n", dialog->callid);
}
/*--- handle_request_info: Receive SIP INFO Message ---*/
/* Doesn't read the duration of the DTMF signal */
@ -7904,6 +8014,11 @@ static int do_register_auth(struct sip_pvt *p, struct sip_request *req, char *he
/* No old challenge */
return -1;
}
if (recordhistory) {
char tmp[80];
snprintf(tmp, sizeof(tmp), "Try: %d", p->authtries);
append_history(p, "RegistryAuth", tmp);
}
if (sip_debug_test_pvt(p) && p->registry)
ast_verbose("Responding to challenge, registration to domain/host name %s\n", p->registry->hostname);
return transmit_register(p->registry, SIP_REGISTER, digest, respheader);
@ -8514,7 +8629,7 @@ static int handle_response_register(struct sip_pvt *p, int resp, char *rest, str
else
expires_ms -= EXPIRY_GUARD_SECS * 1000;
if (sipdebug)
ast_log(LOG_NOTICE, "Outbound Registration: Expiry for %s is %d sec (Scheduling reregistration in %d ms)\n", r->hostname, expires, expires_ms);
ast_log(LOG_NOTICE, "Outbound Registration: Expiry for %s is %d sec (Scheduling reregistration in %d s)\n", r->hostname, expires, expires_ms/1000);
r->refresh= (int) expires_ms / 1000;
@ -8531,6 +8646,7 @@ static int handle_response_peerpoke(struct sip_pvt *p, int resp, char *rest, str
struct sip_peer *peer;
int pingtime;
struct timeval tv;
if (resp != 100) {
int statechanged = 0;
int newstate = 0;
@ -10113,12 +10229,13 @@ static int sip_poke_peer(struct sip_peer *peer)
return 0;
}
if (peer->call > 0) {
ast_log(LOG_NOTICE, "Still have a call...\n");
if (sipdebug)
ast_log(LOG_NOTICE, "Still have a QUALIFY dialog active, deleting\n");
sip_destroy(peer->call);
}
p = peer->call = sip_alloc(NULL, NULL, 0, SIP_OPTIONS);
if (!peer->call) {
ast_log(LOG_WARNING, "Unable to allocate call for poking peer '%s'\n", peer->name);
ast_log(LOG_WARNING, "Unable to allocate dialog for poking peer '%s'\n", peer->name);
return -1;
}
memcpy(&p->sa, &peer->addr, sizeof(p->sa));
@ -10938,6 +11055,8 @@ static int reload_config(void)
outboundproxyip.sin_family = AF_INET; /* Type of address: IPv4 */
videosupport = 0;
compactheaders = 0;
dumphistory = 0;
recordhistory = 0;
relaxdtmf = 0;
callevents = 0;
ourport = DEFAULT_SIP_PORT;
@ -11053,13 +11172,17 @@ static int reload_config(void)
default_expiry = atoi(v->value);
if (default_expiry < 1)
default_expiry = DEFAULT_DEFAULT_EXPIRY;
} else if (!strcasecmp(v->name, "sipdebug")){
} else if (!strcasecmp(v->name, "sipdebug")) {
sipdebug = ast_true(v->value);
} else if (!strcasecmp(v->name, "registertimeout")){
} else if (!strcasecmp(v->name, "dumphistory")) {
dumphistory = ast_true(v->value);
} else if (!strcasecmp(v->name, "recordhistory")) {
recordhistory = ast_true(v->value);
} else if (!strcasecmp(v->name, "registertimeout")) {
global_reg_timeout = atoi(v->value);
if (global_reg_timeout < 1)
global_reg_timeout = DEFAULT_REGISTRATION_TIMEOUT;
} else if (!strcasecmp(v->name, "registerattempts")){
} else if (!strcasecmp(v->name, "registerattempts")) {
global_regattempts_max = atoi(v->value);
} else if (!strcasecmp(v->name, "bindaddr")) {
if (!(hp = ast_gethostbyname(v->value, &ahp))) {
@ -11099,8 +11222,6 @@ static int reload_config(void)
ast_parse_allow_disallow(&prefs, &global_capability, v->value, 0);
} else if (!strcasecmp(v->name, "register")) {
sip_register(v->value, v->lineno);
} else if (!strcasecmp(v->name, "recordhistory")) {
recordhistory = ast_true(v->value);
} else if (!strcasecmp(v->name, "tos")) {
if (ast_str2tos(v->value, &tos))
ast_log(LOG_WARNING, "Invalid tos value at line %d, should be 'lowdelay', 'throughput', 'reliability', 'mincost', or 'none'\n", v->lineno);

17
include/asterisk/sched.h
Unescape View File

@ -62,10 +62,27 @@ typedef int (*ast_sched_cb)(void *data);
* Schedule an event to take place at some point in the future. callback
* will be called with data as the argument, when milliseconds into the
* future (approximately)
* If callback returns 0, no further events will be re-scheduled
* Returns a schedule item ID on success, -1 on failure
*/
extern int ast_sched_add(struct sched_context *con, int when, ast_sched_cb callback, void *data);
/*!Adds a scheduled event */
/*!
* \param con Schduler context to add
* \param when how many milliseconds to wait for event to occur
* \param callback function to call when the amount of time expires
* \param data data to pass to the callback
* \param variable If true, the result value of callback function will be
* used for rescheduling
* Schedule an event to take place at some point in the future. callback
* will be called with data as the argument, when milliseconds into the
* future (approximately)
* If callback returns 0, no further events will be re-scheduled
* Returns a schedule item ID on success, -1 on failure
*/
extern int ast_sched_add_variable(struct sched_context *con, int when, ast_sched_cb callback, void *data, int variable);
/*! Deletes a scheduled event */
/*!
* \param con scheduling context to delete item from

12
sched.c
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@ -42,6 +42,7 @@ struct sched {
int id; /* ID number of event */
struct timeval when; /* Absolute time event should take place */
int resched; /* When to reschedule */
int variable; /* Use return value from callback to reschedule */
void *data; /* Data */
ast_sched_cb callback; /* Callback */
};
@ -209,7 +210,8 @@ static int sched_settime(struct timeval *tv, int when)
return 0;
}
int ast_sched_add(struct sched_context *con, int when, ast_sched_cb callback, void *data)
int ast_sched_add_variable(struct sched_context *con, int when, ast_sched_cb callback, void *data, int variable)
{
/*
* Schedule callback(data) to happen when ms into the future
@ -227,6 +229,7 @@ int ast_sched_add(struct sched_context *con, int when, ast_sched_cb callback, vo
tmp->callback = callback;
tmp->data = data;
tmp->resched = when;
tmp->variable = variable;
tmp->when = ast_tv(0, 0);
if (sched_settime(&tmp->when, when)) {
sched_release(con, tmp);
@ -243,6 +246,11 @@ int ast_sched_add(struct sched_context *con, int when, ast_sched_cb callback, vo
return res;
}
int ast_sched_add(struct sched_context *con, int when, ast_sched_cb callback, void *data)
{
return ast_sched_add_variable(con, when, callback, data, 0);
}
int ast_sched_del(struct sched_context *con, int id)
{
/*
@ -359,7 +367,7 @@ int ast_sched_runq(struct sched_context *con)
* If they return non-zero, we should schedule them to be
* run again.
*/
if (sched_settime(&current->when, current->resched)) {
if (sched_settime(&current->when, current->variable? res : current->resched)) {
sched_release(con, current);
} else
schedule(con, current);

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