[asterisk-dev] [Code Review] 2764: Add edit-MASTER-channel option to CHANNEL() function. To work around channel optimization removing my channel settings.

[wdoekes]

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Review request for Asterisk Developers.


Repository: Asterisk


Description
-------

I'm trying to set a musicclass from a Local channel.

After the channels get bridged, the Local channels get optimized away
and now I get the wrong musicclass.

This patch fixes so I can alter the master CHANNEL settings instead.

Instead of:

  Set(CHANNEL(musicclass)=special)

We do:

  Set(CHANNEL(musicclass,M)=special)

If there is some other way I should've done this, I'd like to hear how :)


Diffs
-----

  /trunk/funcs/func_channel.c 396839 

Diff: https://reviewboard.asterisk.org/r/2764/diff/


Testing
-------

=== extensions.conf ===

[general]

[default]
exten => 1,1,Goto(direct,1)
exten => 2,1,Goto(local,1)
exten => 3,1,Goto(localm,1)

exten => direct,1,NoOp(Direct)
	same => n,Set(CHANNEL(musicclass)=special)
	same => n,NoOp(musicclass: ${CHANNEL(musicclass)})
	same => n,Goto(dial,1)

exten => local,1,Dial(Local/local2 at default)
exten => local2,1,NoOp(Local, no Master)
	same => n,Set(CHANNEL(musicclass)=special)
	same => n,NoOp(musicclass: ${CHANNEL(musicclass)})
	same => n,Goto(dial,1)

exten => localm,1,Dial(Local/localm2 at default)
exten => localm2,1,NoOp(Local, with Master)
	same => n,Set(CHANNEL(musicclass,M)=special)
	same => n,NoOp(musicclass: ${CHANNEL(musicclass,M)})
	same => n,Goto(dial,1)

exten => dial,1,Dial(SIP/victim)

=== musiconhold.conf ===

[general]

[default]
mode=files
directory=moh

[special]
mode=files
directory=moh

=== output ===

`caller` calls `victim`, and `victim` presses hold.

Like expected, the only direct and localm channels get the right musicclass set.

1:
    -- Executing [direct at default:1] NoOp("SIP/caller-00000000", "Direct") in new stack
    -- Executing [direct at default:2] Set("SIP/caller-00000000", "CHANNEL(musicclass)=special") in new stack
    -- Executing [direct at default:3] NoOp("SIP/caller-00000000", "musicclass: special") in new stack
...
    -- Started music on hold, class 'special', on SIP/caller-00000000

2:
    -- Executing [local at default:1] Dial("SIP/caller-00000004", "Local/local2 at default") in new stack
    -- Called Local/local2 at default
    -- Executing [local2 at default:1] NoOp("Local/local2 at default-00000001;2", "Local, no Master") in new stack
    -- Executing [local2 at default:2] Set("Local/local2 at default-00000001;2", "CHANNEL(musicclass)=special") in new stack
    -- Executing [local2 at default:3] NoOp("Local/local2 at default-00000001;2", "musicclass: special") in new stack
...
    -- Move-swap optimizing Local/local2 at default-00000001;1 <-- SIP/victim-00000005.
...
    -- Started music on hold, class 'default', on SIP/caller-00000004

3:
    -- Executing [localm at default:1] Dial("SIP/caller-0000000c", "Local/localm2 at default") in new stack
    -- Executing [localm2 at default:1] NoOp("Local/localm2 at default-00000005;2", "Local, with Master") in new stack
    -- Called Local/localm2 at default
    -- Executing [localm2 at default:2] Set("Local/localm2 at default-00000005;2", "CHANNEL(musicclass,M)=special") in new stack
    -- Executing [localm2 at default:3] NoOp("Local/localm2 at default-00000005;2", "musicclass: special") in new stack
...
    -- Move-swap optimizing Local/localm2 at default-00000002;1 <-- SIP/victim-00000007.
...
    -- Started music on hold, class 'special', on SIP/caller-00000006


Thanks,

wdoekes

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