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res_pjsip_session: Enable RFC3578 overlap dialing support.

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Support for RFC3578 overlap dialling (i.e. 484 Response to partially matched
destinations) as currently provided by chan_sip is missing from res_pjsip.
This patch adds a new endpoint attribute (allow_overlap) [defaults to yes]
which when set to yes enables 484 responses to partial destination
matches rather than the current 404.

ASTERISK-26864

Change-Id: Iea444da3ee7c7d4f1fde1d01d138a3d7b0fe40f6
This commit is contained in:
Richard Begg
2017-03-15 08:45:06 +11:00
committed by Joshua Colp
parent fdea369852
commit 398e5ec16c
7 changed files with 65 additions and 4 deletions
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6
res/res_pjsip.c
View File

@@ -100,6 +100,9 @@
<configOption name="allow">
<synopsis>Media Codec(s) to allow</synopsis>
</configOption>
<configOption name="allow_overlap" default="yes">
<synopsis>Enable RFC3578 overlap dialing support.</synopsis>
</configOption>
<configOption name="aors">
<synopsis>AoR(s) to be used with the endpoint</synopsis>
<description><para>
@@ -2122,6 +2125,9 @@
<parameter name="SubscribeContext">
<para><xi:include xpointer="xpointer(/docs/configInfo[@name='res_pjsip']/configFile[@name='pjsip.conf']/configObject[@name='endpoint']/configOption[@name='subscribe_context']/synopsis/node())"/></para>
</parameter>
<parameter name="Allowoverlap">
<para><xi:include xpointer="xpointer(/docs/configInfo[@name='res_pjsip']/configFile[@name='pjsip.conf']/configObject[@name='endpoint']/configOption[@name='allow_overlap']/synopsis/node())"/></para>
</parameter>
</syntax>
</managerEventInstance>
</managerEvent>

1
res/res_pjsip/pjsip_configuration.c
View File

@@ -1939,6 +1939,7 @@ int ast_res_pjsip_initialize_configuration(const struct ast_module_info *ast_mod
ast_sorcery_object_field_register_custom(sip_sorcery, "endpoint", "contact_user", "", contact_user_handler, contact_user_to_str, NULL, 0, 0);
ast_sorcery_object_field_register(sip_sorcery, "endpoint", "asymmetric_rtp_codec", "no", OPT_BOOL_T, 1, FLDSET(struct ast_sip_endpoint, asymmetric_rtp_codec));
ast_sorcery_object_field_register(sip_sorcery, "endpoint", "rtcp_mux", "no", OPT_BOOL_T, 1, FLDSET(struct ast_sip_endpoint, rtcp_mux));
ast_sorcery_object_field_register(sip_sorcery, "endpoint", "allow_overlap", "yes", OPT_BOOL_T, 1, FLDSET(struct ast_sip_endpoint, allow_overlap));
if (ast_sip_initialize_sorcery_transport()) {
ast_log(LOG_ERROR, "Failed to register SIP transport support with sorcery\n");

24
res/res_pjsip_session.c
View File

@@ -1984,10 +1984,17 @@ static enum sip_get_destination_result get_destination(struct ast_sip_session *s
return SIP_GET_DEST_EXTEN_FOUND;
}
/* XXX In reality, we'll likely have further options so that partial matches
* can be indicated here, but for getting something up and running, we're going
* to return a "not exists" error here.
/*
* Check for partial match via overlap dialling (if enabled)
*/
if (session->endpoint->allow_overlap && (
!strncmp(session->exten, pickupexten, strlen(session->exten)) ||
ast_canmatch_extension(NULL, session->endpoint->context, session->exten, 1, NULL))) {
/* Overlap partial match */
return SIP_GET_DEST_EXTEN_PARTIAL;
}
return SIP_GET_DEST_EXTEN_NOT_FOUND;
}
@@ -2104,8 +2111,17 @@ static int new_invite(void *data)
pjsip_inv_terminate(invite->session->inv_session, 416, PJ_TRUE);
}
goto end;
case SIP_GET_DEST_EXTEN_NOT_FOUND:
case SIP_GET_DEST_EXTEN_PARTIAL:
ast_debug(1, "Call from '%s' (%s:%s:%d) to extension '%s' - partial match\n", ast_sorcery_object_get_id(invite->session->endpoint),
invite->rdata->tp_info.transport->type_name, invite->rdata->pkt_info.src_name, invite->rdata->pkt_info.src_port, invite->session->exten);
if (pjsip_inv_initial_answer(invite->session->inv_session, invite->rdata, 484, NULL, NULL, &tdata) == PJ_SUCCESS) {
ast_sip_session_send_response(invite->session, tdata);
} else {
pjsip_inv_terminate(invite->session->inv_session, 484, PJ_TRUE);
}
goto end;
case SIP_GET_DEST_EXTEN_NOT_FOUND:
default:
ast_log(LOG_NOTICE, "Call from '%s' (%s:%s:%d) to extension '%s' rejected because extension not found in context '%s'.\n",
ast_sorcery_object_get_id(invite->session->endpoint), invite->rdata->tp_info.transport->type_name, invite->rdata->pkt_info.src_name,