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Make more timers settable in SIP so that we can force timeout earlier on non-responsive SIP servers.

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Thanks, jcmoore, for the patch!

Reported by: jcmoore
Patches: 
      peer_t1_timerb_trunk_v3.patch.txt uploaded by jcmoore (license 9)
(closes issue #9771)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@93159 65c4cc65-6c06-0410-ace0-fbb531ad65f3
1.6.0
Olle Johansson 18 years ago
parent 28705e1bba
commit d8795b4542
2 changed files with 64 additions and 9 deletions
Show Stats Download Patch File Download Diff File

66
channels/chan_sip.c
Unescape View File

@ -181,8 +181,8 @@ static int expiry = DEFAULT_EXPIRY;
#define DEFAULT_RETRANS 1000 /*!< How frequently to retransmit Default: 2 * 500 ms in RFC 3261 */
#define MAX_RETRANS 6 /*!< Try only 6 times for retransmissions, a total of 7 transmissions */
#define SIP_TIMER_T1 500 /* SIP timer T1 (according to RFC 3261) */
#define SIP_TRANS_TIMEOUT 32000 /*!< SIP request timeout (rfc 3261) 64*T1
#define SIP_TIMER_T1 500 /* SIP timer T1 (according to RFC 3261) */
#define SIP_TRANS_TIMEOUT 64 * SIP_TIMER_T1/*!< SIP request timeout (rfc 3261) 64*T1
\todo Use known T1 for timeout (peerpoke)
*/
#define DEFAULT_TRANS_TIMEOUT -1 /* Use default SIP transaction timeout */
@ -636,7 +636,9 @@ static char global_sdpsession[AST_MAX_EXTENSION]; /*!< SDP session name for the
static char global_sdpowner[AST_MAX_EXTENSION]; /*!< SDP owner name for the SIP channel */
static int allow_external_domains; /*!< Accept calls to external SIP domains? */
static int global_callevents; /*!< Whether we send manager events or not */
static int global_t1; /*!< T1 time */
static int global_t1min; /*!< T1 roundtrip time minimum */
static int global_timer_b; /*!< Timer B - RFC 3261 Section 17.1.1.2 */
static int global_regextenonqualify; /*!< Whether to add/remove regexten when qualifying peers */
static int global_autoframing; /*!< Turn autoframing on or off. */
static enum transfermodes global_allowtransfer; /*!< SIP Refer restriction scheme */
@ -1088,6 +1090,7 @@ struct sip_pvt {
char notext; /*!< Text not supported (?) */
int timer_t1; /*!< SIP timer T1, ms rtt */
int timer_b; /*!< SIP timer B, ms */
unsigned int sipoptions; /*!< Supported SIP options on the other end */
struct ast_codec_pref prefs; /*!< codec prefs */
int capability; /*!< Special capability (codec) */
@ -1349,6 +1352,8 @@ struct sip_peer {
struct ast_variable *chanvars; /*!< Variables to set for channel created by user */
struct sip_pvt *mwipvt; /*!< Subscription for MWI */
int autoframing;
int timer_t1; /*!< The maximum T1 value for the peer */
int timer_b; /*!< The maximum timer B (transaction timeouts) */
};
@ -2502,8 +2507,10 @@ static int __sip_autodestruct(const void *data)
static void sip_scheddestroy(struct sip_pvt *p, int ms)
{
if (ms < 0) {
if (p->timer_t1 == 0)
p->timer_t1 = SIP_TIMER_T1; /* Set timer T1 if not set (RFC 3261) */
if (p->timer_t1 == 0) {
p->timer_t1 = global_t1; /* Set timer T1 if not set (RFC 3261) */
p->timer_b = global_timer_b; /* Set timer B if not set (RFC 3261) */
}
ms = p->timer_t1 * 64;
}
if (sip_debug_test_pvt(p))
@ -3449,8 +3456,19 @@ static int create_addr_from_peer(struct sip_pvt *dialog, struct sip_peer *peer)
/* Set timer T1 to RTT for this peer (if known by qualify=) */
/* Minimum is settable or default to 100 ms */
/* If there is a maxms and lastms from a qualify use that over a manual T1
value. Otherwise, use the peer's T1 value. */
if (peer->maxms && peer->lastms)
dialog->timer_t1 = peer->lastms < global_t1min ? global_t1min : peer->lastms;
else
dialog->timer_t1 = peer->timer_t1;
/* Set timer B to control transaction timeouts, the peer setting is the default and overrides
the known timer */
if (peer->timer_b)
dialog->timer_b = peer->timer_b;
else
dialog->timer_b = 64 * dialog->timer_t1;
if ((ast_test_flag(&dialog->flags[0], SIP_DTMF) == SIP_DTMF_RFC2833) ||
(ast_test_flag(&dialog->flags[0], SIP_DTMF) == SIP_DTMF_AUTO))
@ -3481,7 +3499,8 @@ static int create_addr(struct sip_pvt *dialog, const char *opeer)
if (port)
*port++ = '\0';
dialog->sa.sin_family = AF_INET;
dialog->timer_t1 = SIP_TIMER_T1; /* Default SIP retransmission timer T1 (RFC 3261) */
dialog->timer_t1 = global_t1; /* Default SIP retransmission timer T1 (RFC 3261) */
dialog->timer_b = global_timer_b; /* Default SIP transaction timer B (RFC 3261) */
peer = find_peer(peername, NULL, 1);
if (peer) {
@ -3633,7 +3652,7 @@ static int sip_call(struct ast_channel *ast, char *dest, int timeout)
p->invitestate = INV_CALLING;
/* Initialize auto-congest time */
p->initid = ast_sched_replace(p->initid, sched, SIP_TRANS_TIMEOUT,
p->initid = ast_sched_replace(p->initid, sched, p->timer_b,
auto_congest, dialog_ref(p));
}
@ -5067,8 +5086,10 @@ static struct sip_pvt *sip_alloc(ast_string_field callid, struct sockaddr_in *si
p->stateid = -1;
p->prefs = default_prefs; /* Set default codecs for this call */
if (intended_method != SIP_OPTIONS) /* Peerpoke has it's own system */
p->timer_t1 = SIP_TIMER_T1; /* Default SIP retransmission timer T1 (RFC 3261) */
if (intended_method != SIP_OPTIONS) { /* Peerpoke has it's own system */
p->timer_t1 = global_t1; /* Default SIP retransmission timer T1 (RFC 3261) */
p->timer_b = global_timer_b; /* Default SIP transaction timer B (RFC 3261) */
}
if (!sin)
p->ourip = internip;
@ -10377,6 +10398,15 @@ static enum check_auth_result check_peer_ok(struct sip_pvt *p, char *of,
p->callingpres = peer->callingpres;
if (peer->maxms && peer->lastms)
p->timer_t1 = peer->lastms < global_t1min ? global_t1min : peer->lastms;
else
p->timer_t1 = peer->timer_t1;
/* Set timer B to control transaction timeouts */
if (peer->timer_b)
p->timer_b = peer->timer_b;
else
p->timer_b = 64 * p->timer_t1;
if (ast_test_flag(&peer->flags[0], SIP_INSECURE_INVITE)) {
/* Pretend there is no required authentication */
ast_string_field_set(p, peersecret, NULL);
@ -11539,6 +11569,8 @@ static char *_sip_show_peer(int type, int fd, struct mansession *s, const struct
/* - is enumerated */
ast_cli(fd, " DTMFmode : %s\n", dtmfmode2str(ast_test_flag(&peer->flags[0], SIP_DTMF)));
ast_cli(fd, " Timer T1 : %d\n", peer->timer_t1);
ast_cli(fd, " Timer B : %d\n", peer->timer_b);
ast_cli(fd, " ToHost : %s\n", peer->tohost);
ast_cli(fd, " Addr->IP : %s Port %d\n", peer->addr.sin_addr.s_addr ? ast_inet_ntoa(peer->addr.sin_addr) : "(Unspecified)", ntohs(peer->addr.sin_port));
ast_cli(fd, " Defaddr->IP : %s Port %d\n", ast_inet_ntoa(peer->defaddr.sin_addr), ntohs(peer->defaddr.sin_port));
@ -11934,7 +11966,6 @@ static char *sip_show_settings(struct ast_cli_entry *e, int cmd, struct ast_cli_
ast_cli(a->fd, " Codec Order: ");
print_codec_to_cli(a->fd, &default_prefs);
ast_cli(a->fd, "\n");
ast_cli(a->fd, " T1 minimum: %d\n", global_t1min);
ast_cli(a->fd, " Relax DTMF: %s\n", cli_yesno(global_relaxdtmf));
ast_cli(a->fd, " Compact SIP headers: %s\n", cli_yesno(compactheaders));
ast_cli(a->fd, " RTP Keepalive: %d %s\n", global_rtpkeepalive, global_rtpkeepalive ? "" : "(Disabled)" );
@ -11955,6 +11986,9 @@ static char *sip_show_settings(struct ast_cli_entry *e, int cmd, struct ast_cli_
ast_cli(a->fd, " Auto-Framing: %s\n", cli_yesno(global_autoframing));
ast_cli(a->fd, " Outb. proxy: %s %s\n", ast_strlen_zero(global_outboundproxy.name) ? "<not set>" : global_outboundproxy.name,
global_outboundproxy.force ? "(forced)" : "");
ast_cli(a->fd, " Timer T1: %d\n", global_t1);
ast_cli(a->fd, " Timer T1 minimum: %d\n", global_t1min);
ast_cli(a->fd, " Timer B: %d\n", global_timer_b);
ast_cli(a->fd, "\nDefault Settings:\n");
ast_cli(a->fd, "-----------------\n");
@ -17801,6 +17835,8 @@ static void set_peer_defaults(struct sip_peer *peer)
peer->pickupgroup = 0;
peer->maxms = default_qualify;
peer->prefs = default_prefs;
peer->timer_t1 = global_t1;
peer->timer_b = global_timer_b;
clear_peer_mailboxes(peer);
}
@ -18076,6 +18112,16 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, str
ast_log(LOG_WARNING, "'%s' is not a valid RTP keepalive time at line %d. Using default.\n", v->value, v->lineno);
peer->rtpkeepalive = global_rtpkeepalive;
}
} else if (!strcasecmp(v->name, "timert1")) {
if ((sscanf(v->value, "%d", &peer->timer_t1) != 1) || (peer->timer_t1 < 0)) {
ast_log(LOG_WARNING, "'%s' is not a valid T1 time at line %d. Using default.\n", v->value, v->lineno);
peer->timer_t1 = global_t1;
}
} else if (!strcasecmp(v->name, "timerb")) {
if ((sscanf(v->value, "%d", &peer->timer_b) != 1) || (peer->timer_b < 0)) {
ast_log(LOG_WARNING, "'%s' is not a valid Timer B time at line %d. Using default.\n", v->value, v->lineno);
peer->timer_b = global_timer_b;
}
} else if (!strcasecmp(v->name, "setvar")) {
peer->chanvars = add_var(v->value, peer->chanvars);
} else if (!strcasecmp(v->name, "qualify")) {
@ -18296,6 +18342,8 @@ static int reload_config(enum channelreloadreason reason)
/* Misc settings for the channel */
global_relaxdtmf = FALSE;
global_callevents = FALSE;
global_t1 = SIP_TIMER_T1;
global_timer_b = 64 * SIP_TIMER_T1;
global_t1min = DEFAULT_T1MIN;
global_matchexterniplocally = FALSE;

7
configs/sip.conf.sample
Unescape View File

@ -83,6 +83,11 @@ srvlookup=yes ; Enable DNS SRV lookups on outbound calls
;defaultexpiry=120 ; Default length of incoming/outgoing registration
;t1min=100 ; Minimum roundtrip time for messages to monitored hosts
; Defaults to 100 ms
;timert1=500 ; Default T1 timer
; Defaults to 500 ms
;timerb=32000 ; Call setup timer. If a provisional response is not received
; in this amount of time, the call will autocongest
; Defaults to 64*timert1
;notifymimetype=text/plain ; Allow overriding of mime type in MWI NOTIFY
;buggymwi=no ; Cisco SIP firmware doesn't support the MWI RFC
; fully. Enable this option to not get error messages
@ -598,6 +603,8 @@ srvlookup=yes ; Enable DNS SRV lookups on outbound calls
; rfc2833compensate
; callbackextension
; registertrying
; timert1
; timerb
;[sip_proxy]
; For incoming calls only. Example: FWD (Free World Dialup)

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