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No response sent for SIP CC subscribe/resubscribe request.

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Asterisk does not send a response if we try to subscribe for call
completion after we have received a 180 Ringing.  You can only subscribe
for call completion when the call has been cleared.

When we receive the 180 Ringing, for this call, its call-completion state
is 'CC_AVAILABLE'.  If we then send a subscribe message to Asterisk, it
trys to change the call-completion state to 'CC_CALLER_REQUESTED'.
Because this is an invalid state change, it just ignores the message.  The
only state Asterisk will accept our subscribe message is in the
'CC_CALLER_OFFERED' state.

Asterisk will go into the 'CC_CALLER_OFFERED' when the SIP client clears
the call by sending a CANCEL.

Asterisk should always send a response.  Even if its a negative one.


The fix is to allow for the CCSS core to notify a CC agent that a failure
has occurred when CC is requested.  The "ack" callback is replaced with a
"respond" callback.  The "respond" callback has a parameter indicating
either a successful response or a specific type of failure that may need
to be communicated to the requester.

(closes issue #18336)
Reported by: GeorgeKonopacki
Tested by: mmichelson, rmudgett

JIRA SWP-2633

(closes issue #18337)
Reported by: GeorgeKonopacki
Tested by: mmichelson

JIRA SWP-2634


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@307879 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2011-02-15 16:13:55 +00:00
parent bff7dd69e0
commit a5f6367057
6 changed files with 117 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
channels/sig_pri.h
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@@ -514,7 +514,7 @@ void sig_pri_fixup(struct ast_channel *oldchan, struct ast_channel *newchan, str
int sig_pri_cc_agent_init(struct ast_cc_agent *agent, struct sig_pri_chan *pvt_chan);
int sig_pri_cc_agent_start_offer_timer(struct ast_cc_agent *agent);
int sig_pri_cc_agent_stop_offer_timer(struct ast_cc_agent *agent);
void sig_pri_cc_agent_req_ack(struct ast_cc_agent *agent);
void sig_pri_cc_agent_req_rsp(struct ast_cc_agent *agent, enum ast_cc_agent_response_reason reason);
int sig_pri_cc_agent_status_req(struct ast_cc_agent *agent);
int sig_pri_cc_agent_stop_ringing(struct ast_cc_agent *agent);
int sig_pri_cc_agent_party_b_free(struct ast_cc_agent *agent);