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HTTP: Stop accepting requests on final system shutdown.

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There are three CLI commands to stop and restart Asterisk each.

1) core stop/restart now - Hangup all calls and stop or restart Asterisk.
New channels are prevented while the shutdown request is pending.

2) core stop/restart gracefully - Stop or restart Asterisk when there are
no calls remaining in the system.  New channels are prevented while the
shutdown request is pending.

3) core stop/restart when convenient - Stop or restart Asterisk when there
are no calls in the system.  New calls are not prevented while the
shutdown request is pending.

ARI has made stopping/restarting Asterisk more problematic.  While a
shutdown request is pending it is desirable to continue to process ARI
HTTP requests for current calls.  To handle the current calls while a
shutdown request is pending, a new committed to shutdown phase is needed
so ARI applications can deal with the calls until the system is fully
committed to shutdown.

* Added a new shutdown committed phase so ARI applications can deal with
calls until the final committed to shutdown phase is reached.

* Made refuse new HTTP requests when the system has reached the final
system shutdown phase.  Starting anything while the system is actively
releasing resources and unloading modules is not a good thing.

* Split the bridging framework shutdown to not cleanup the global bridging
containers when shutting down in a hurry.  This is similar to how other
modules prevent crashes on rapid system shutdown.

* Moved ast_begin_shutdown(), ast_cancel_shutdown(), and
ast_shutting_down().  You should not have to include channel.h just to
access these system functions.

ASTERISK-24752 #close
Reported by: Matthew Jordan

Review: https://reviewboard.asterisk.org/r/4399/


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@431692 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2015-02-11 17:28:13 +00:00
parent 29f3ff0b61
commit feddab7944
10 changed files with 214 additions and 70 deletions
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4
res/res_pjsip/pjsip_options.c
View File

@@ -655,6 +655,10 @@ static pj_bool_t options_on_rx_request(pjsip_rx_data *rdata)
ast_copy_pj_str(exten, &sip_ruri->user, sizeof(exten));
if (ast_shutting_down()) {
/*
* Not taking any new calls at this time.
* Likely a server availability OPTIONS poll.
*/
send_options_response(rdata, 503);
} else if (!ast_strlen_zero(exten) && !ast_exists_extension(NULL, endpoint->context, exten, 1, NULL)) {
send_options_response(rdata, 404);