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res_pjsip_session.c: End call on initial invalid SDP negotiation.

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When an incoming call defers SDP negotiation and then sends us an invalid
SDP in the ACK, we need to send a BYE to disconnect the call.  In this
case SDP negotiation has failed and we don't have valid media streams
negotiated.

ASTERISK-25772

Change-Id: Ia358516b0fc1e6c4c139b78246f10b9da7a2dfb8
This commit is contained in:
Richard Mudgett
2016-06-27 17:19:08 -05:00
parent e6e12c752c
commit 08d3b9a89e
1 changed files with 32 additions and 4 deletions
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36
res/res_pjsip_session.c
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@@ -2513,6 +2513,36 @@ static int check_request_status(pjsip_inv_session *inv, pjsip_event *e)
return 1;
}
static void handle_incoming_before_media(pjsip_inv_session *inv,
struct ast_sip_session *session, pjsip_rx_data *rdata)
{
pjsip_msg *msg;
handle_incoming(session, rdata, AST_SIP_SESSION_BEFORE_MEDIA);
msg = rdata->msg_info.msg;
if (msg->type == PJSIP_REQUEST_MSG
&& msg->line.req.method.id == PJSIP_ACK_METHOD
&& pjmedia_sdp_neg_get_state(inv->neg) != PJMEDIA_SDP_NEG_STATE_DONE) {
pjsip_tx_data *tdata;
/*
* SDP negotiation failed on an incoming call that delayed
* negotiation and then gave us an invalid SDP answer. We
* need to send a BYE to end the call because of the invalid
* SDP answer.
*/
ast_debug(1,
"Endpoint '%s(%s)': Ending session due to incomplete SDP negotiation. %s\n",
ast_sorcery_object_get_id(session->endpoint),
session->channel ? ast_channel_name(session->channel) : "",
pjsip_rx_data_get_info(rdata));
if (pjsip_inv_end_session(inv, 400, NULL, &tdata) == PJ_SUCCESS
&& tdata) {
ast_sip_session_send_request(session, tdata);
}
}
}
static void session_inv_on_state_changed(pjsip_inv_session *inv, pjsip_event *e)
{
struct ast_sip_session *session = inv->mod_data[session_module.id];
@@ -2534,8 +2564,7 @@ static void session_inv_on_state_changed(pjsip_inv_session *inv, pjsip_event *e)
handle_outgoing(session, e->body.tx_msg.tdata);
break;
case PJSIP_EVENT_RX_MSG:
handle_incoming(session, e->body.rx_msg.rdata,
AST_SIP_SESSION_BEFORE_MEDIA);
handle_incoming_before_media(inv, session, e->body.rx_msg.rdata);
break;
case PJSIP_EVENT_TSX_STATE:
ast_debug(3, "Source of transaction state change is %s\n", pjsip_event_str(e->body.tsx_state.type));
@@ -2546,8 +2575,7 @@ static void session_inv_on_state_changed(pjsip_inv_session *inv, pjsip_event *e)
break;
case PJSIP_EVENT_RX_MSG:
if (!check_request_status(inv, e)) {
handle_incoming(session, e->body.tsx_state.src.rdata,
AST_SIP_SESSION_BEFORE_MEDIA);
handle_incoming_before_media(inv, session, e->body.tsx_state.src.rdata);
}
break;
case PJSIP_EVENT_TRANSPORT_ERROR: