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Merged revisions 332756 via svnmerge from

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https://origsvn.digium.com/svn/asterisk/branches/10

........
  r332756 | mnicholson | 2011-08-22 11:29:45 -0500 (Mon, 22 Aug 2011) | 4 lines
  
  add a way to disable and/or modify the gateway timeout
  
  ASTERISK-18219
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@332757 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Matthew Nicholson
2011-08-22 16:31:59 +00:00
parent 3a50145436
commit 91d3a7d3a1
2 changed files with 70 additions and 14 deletions
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2
include/asterisk/res_fax.h
View File

@@ -172,6 +172,8 @@ struct ast_fax_session_details {
struct ast_fax_t38_parameters their_t38_parameters;
/*! the id of the t.38 gateway framehook for this channel */
int gateway_id;
/*! the timeout for this gateway in seconds */
int gateway_timeout;
};
struct ast_fax_tech;

82
res/res_fax.c
View File

@@ -192,6 +192,9 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
<enum name="gateway">
<para>R/W T38 Gateway Enabled (yes/no)</para>
</enum>
<enum name="timeout">
<para>R/W Gateway fax activity timeout in seconds (yes/no/seconds)</para>
</enum>
<enum name="pages">
<para>R/O Number of pages transferred.</para>
</enum>
@@ -452,6 +455,7 @@ static struct ast_fax_session_details *session_details_new(void)
d->minrate = general_options.minrate;
d->maxrate = general_options.maxrate;
d->gateway_id = -1;
d->gateway_timeout = FAX_GATEWAY_TIMEOUT;
return d;
}
@@ -2419,7 +2423,7 @@ static struct fax_gateway *fax_gateway_new(struct ast_fax_session_details *detai
ast_dsp_set_faxmode(gateway->peer_dsp, DSP_FAXMODE_DETECT_V21);
details->caps = AST_FAX_TECH_GATEWAY;
if (!(gateway->s = fax_session_reserve(details, &gateway->token))) {
if (details->gateway_timeout && !(gateway->s = fax_session_reserve(details, &gateway->token))) {
details->caps |= ~AST_FAX_TECH_GATEWAY;
ast_log(LOG_ERROR, "Can't reserve a FAX session, gateway attempt failed.\n");
ao2_ref(gateway, -1);
@@ -2503,6 +2507,7 @@ static struct ast_frame *fax_gateway_request_t38(struct fax_gateway *gateway, st
gateway->t38_state = T38_STATE_NEGOTIATING;
gateway->timeout_start = ast_tvnow();
details->gateway_timeout = FAX_GATEWAY_TIMEOUT;
ast_debug(1, "requesting T.38 for gateway session for %s\n", chan->name);
return fp;
@@ -2595,6 +2600,7 @@ static struct ast_frame *fax_gateway_detect_t38(struct fax_gateway *gateway, str
t38_parameters_ast_to_fax(&details->their_t38_parameters, control_params);
gateway->t38_state = T38_STATE_UNKNOWN;
gateway->timeout_start = ast_tvnow();
details->gateway_timeout = FAX_GATEWAY_TIMEOUT;
ao2_ref(details, -1);
return f;
} else if (state == T38_STATE_UNAVAILABLE || state == T38_STATE_REJECTED) {
@@ -2632,6 +2638,7 @@ static struct ast_frame *fax_gateway_detect_t38(struct fax_gateway *gateway, str
t38_parameters_ast_to_fax(&details->their_t38_parameters, control_params);
gateway->t38_state = T38_STATE_UNKNOWN;
gateway->timeout_start = ast_tvnow();
details->gateway_timeout = FAX_GATEWAY_TIMEOUT;
ast_debug(1, "%s is attempting to negotiate T.38 after we already sent a negotiation request based on v21 preamble detection\n", active->name);
ao2_ref(details, -1);
@@ -2810,10 +2817,23 @@ static void fax_gateway_framehook_destroy(void *data) {
static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct ast_frame *f, enum ast_framehook_event event, void *data) {
struct fax_gateway *gateway = data;
struct ast_channel *peer, *active;
struct ast_fax_session_details *details;
if (gateway->s) {
details = gateway->s->details;
ao2_ref(details, 1);
} else {
if (!(details = find_details(chan))) {
ast_log(LOG_ERROR, "no FAX session details found on chan %s for T.38 gateway session, odd\n", chan->name);
ast_framehook_detach(chan, gateway->framehook);
details->gateway_id = -1;
return f;
}
}
/* restore audio formats when we are detached */
if (event == AST_FRAMEHOOK_EVENT_DETACHED) {
set_channel_variables(chan, gateway->s->details);
set_channel_variables(chan, details);
if (gateway->bridged) {
ast_set_read_format(chan, &gateway->chan_read_format);
@@ -2826,20 +2846,24 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
}
}
ao2_ref(details, -1);
return NULL;
}
if (!f || (event == AST_FRAMEHOOK_EVENT_ATTACHED)) {
ao2_ref(details, -1);
return NULL;
};
/* this frame was generated by the fax gateway, pass it on */
if (ast_test_flag(f, AST_FAX_FRFLAG_GATEWAY)) {
ao2_ref(details, -1);
return f;
}
if (!(peer = ast_bridged_channel(chan))) {
/* not bridged, don't do anything */
ao2_ref(details, -1);
return f;
}
@@ -2848,16 +2872,19 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
if (ast_channel_get_t38_state(chan) == T38_STATE_UNAVAILABLE && ast_channel_get_t38_state(peer) == T38_STATE_UNAVAILABLE) {
ast_debug(1, "not starting gateway for %s and %s; neither channel supports T.38\n", chan->name, peer->name);
ast_framehook_detach(chan, gateway->framehook);
gateway->s->details->gateway_id = -1;
details->gateway_id = -1;
ast_string_field_set(gateway->s->details, result, "FAILED");
ast_string_field_set(gateway->s->details, resultstr, "neither channel supports T.38");
ast_string_field_set(gateway->s->details, error, "T38_NEG_ERROR");
set_channel_variables(chan, gateway->s->details);
ast_string_field_set(details, result, "FAILED");
ast_string_field_set(details, resultstr, "neither channel supports T.38");
ast_string_field_set(details, error, "T38_NEG_ERROR");
set_channel_variables(chan, details);
ao2_ref(details, -1);
return f;
}
gateway->timeout_start = ast_tvnow();
if (details->gateway_timeout) {
gateway->timeout_start = ast_tvnow();
}
/* we are bridged, change r/w formats to SLIN for v21 preamble
* detection and T.30 */
@@ -2878,15 +2905,16 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
}
if (gateway->bridged && !ast_tvzero(gateway->timeout_start)) {
if (ast_tvdiff_ms(ast_tvnow(), gateway->timeout_start) > FAX_GATEWAY_TIMEOUT) {
if (ast_tvdiff_ms(ast_tvnow(), gateway->timeout_start) > details->gateway_timeout) {
ast_debug(1, "no fax activity between %s and %s after %d ms, disabling gateway\n", chan->name, peer->name, FAX_GATEWAY_TIMEOUT);
ast_framehook_detach(chan, gateway->framehook);
gateway->s->details->gateway_id = -1;
details->gateway_id = -1;
ast_string_field_set(gateway->s->details, result, "FAILED");
ast_string_field_build(gateway->s->details, resultstr, "no fax activity after %d ms", FAX_GATEWAY_TIMEOUT);
ast_string_field_set(gateway->s->details, error, "TIMEOUT");
set_channel_variables(chan, gateway->s->details);
ast_string_field_set(details, result, "FAILED");
ast_string_field_build(details, resultstr, "no fax activity after %d ms", FAX_GATEWAY_TIMEOUT);
ast_string_field_set(details, error, "TIMEOUT");
set_channel_variables(chan, details);
ao2_ref(details, -1);
return f;
}
}
@@ -2900,6 +2928,7 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
case AST_FORMAT_ULAW:
break;
default:
ao2_ref(details, -1);
return f;
}
break;
@@ -2907,13 +2936,16 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
if (f->subclass.integer == AST_MODEM_T38) {
break;
}
ao2_ref(details, -1);
return f;
case AST_FRAME_CONTROL:
if (f->subclass.integer == AST_CONTROL_T38_PARAMETERS) {
break;
}
ao2_ref(details, -1);
return f;
default:
ao2_ref(details, -1);
return f;
}
@@ -2927,17 +2959,20 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
break;
default:
ast_log(LOG_WARNING, "unhandled framehook event %i\n", event);
ao2_ref(details, -1);
return f;
}
/* handle control frames */
if (f->frametype == AST_FRAME_CONTROL && f->subclass.integer == AST_CONTROL_T38_PARAMETERS) {
ao2_ref(details, -1);
return fax_gateway_detect_t38(gateway, chan, peer, active, f);
}
if (!gateway->detected_v21 && gateway->t38_state == T38_STATE_UNAVAILABLE && f->frametype == AST_FRAME_VOICE) {
/* not in gateway mode and have not detected v21 yet, listen
* for v21 */
ao2_ref(details, -1);
return fax_gateway_detect_v21(gateway, chan, peer, active, f);
}
@@ -2948,6 +2983,7 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
if ((f->frametype == AST_FRAME_VOICE) && (f->subclass.format.id != AST_FORMAT_SLINEAR)) {
if (active->readtrans && (f = ast_translate(active->readtrans, f, 1)) == NULL) {
f = &ast_null_frame;
ao2_ref(details, -1);
return f;
}
}
@@ -2958,6 +2994,7 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
* now we'll just ignore the return value. */
gateway->s->tech->write(gateway->s, f);
f = &ast_null_frame;
ao2_ref(details, -1);
return f;
}
@@ -2974,12 +3011,15 @@ static struct ast_frame *fax_gateway_framehook(struct ast_channel *chan, struct
ast_format_set(&silence_frame.subclass.format, AST_FORMAT_SLINEAR, 0);
memset(silence_buf, 0, sizeof(silence_buf));
ao2_ref(details, -1);
return ast_frisolate(&silence_frame);
} else {
ao2_ref(details, -1);
return &ast_null_frame;
}
}
ao2_ref(details, -1);
return f;
}
@@ -3432,6 +3472,8 @@ static int acf_faxopt_read(struct ast_channel *chan, const char *cmd, char *data
} else if (!strcasecmp(data, "t38gateway") || !strcasecmp(data, "gateway") ||
!strcasecmp(data, "t38_gateway") || !strcasecmp(data, "faxgateway")) {
ast_copy_string(buf, details->gateway_id != -1 ? "yes" : "no", len);
} else if (!strcasecmp(data, "timeout")) {
snprintf(buf, len, "%d", details->gateway_timeout / 1000);
} else if (!strcasecmp(data, "error")) {
ast_copy_string(buf, details->error, len);
} else if (!strcasecmp(data, "filename")) {
@@ -3527,6 +3569,18 @@ static int acf_faxopt_write(struct ast_channel *chan, const char *cmd, char *dat
} else {
ast_log(LOG_WARNING, "Unsupported value '%s' passed to FAXOPT(%s).\n", value, data);
}
} else if (!strcasecmp(data, "timeout")) {
const char *val = ast_skip_blanks(value);
int timeout;
if (ast_true(val)) {
details->gateway_timeout = FAX_GATEWAY_TIMEOUT;
} else if (ast_false(val)) {
details->gateway_timeout = 0;
} else if (sscanf(val, "%d", &timeout) == 1 && timeout > 0) {
details->gateway_timeout = timeout * 1000;
} else {
ast_log(LOG_WARNING, "Unsupported value '%s' passed to FAXOPT(%s).\n", value, data);
}
} else if (!strcasecmp(data, "headerinfo")) {
ast_string_field_set(details, headerinfo, value);
} else if (!strcasecmp(data, "localstationid")) {