C.37. DeadAGI()

Führt ein AGI-konformes Skript auf einem toten (aufgelegten) Channel aus.
DeadAGI(Skript[,Parameter1[,Parameter2[,...]]])
DeadAGI() funktioniert wie AGI() (Abschnitt C.7, „AGI()“), wurde aber speziell für tote (d. h. aufgelegte) Kanäle entwickelt, weil das Standard-AGI-Interface nicht funktioniert, nachdem der Channel aufgelegt wurde. Dass der Channel „tot“ ist, ist allerdings keine Voraussetzung für den Start eines DeadAGI-Skripts.
Liefert -1 zurück, falls die Anwendung ein Auflegen angefordert hat, oder 0 beim Austritt ohne Auflegen.
; mit einem bereits aufgelegten (h) Kanal noch ein AGI-Skript ausführen:
exten => h,1,DeadAGI(agi-test)

Wichtig

Der Channel wird so lange als aktiv angesehen, bis das Skript beendet wird, was z. B. für CDRs von Bedeutung sein kann.
Beachten Sie, dass auch DeadAGI-Skripte beim Auflegen des Channels ein SIGHUP-Signal erhalten, was ggf. ignoriert werden muss:
Perl
$SIG{HUP} = "IGNORE";
PHP
pcntl_signal(SIGHUP, SIG_IGN);
(PHP muss mit --enable-pcntl kompiliert worden sein, was per Default nicht der Fall ist!)
Ruby
trap('SIGHUP','IGNORE')
Es ist auch wichtig, dass Sie nach dem Auflegen nicht mehr mit Asterisk kommunizieren, sonst erhält das Skript ein SIGPIPE, was das Skript beendet, sofern Sie es nicht ignorieren.
Asterisk-Versionen:
————————| 1.2 |————————| 1.4 |————————| 1.6 |————————
Interner Hilfetext zu dieser Applikation in Asterisk 1.4:
  -= Info about application 'DeadAGI' =-

[Synopsis]
Executes AGI on a hungup channel

[Description]
  [E|Dead]AGI(command|args): Executes an Asterisk Gateway Interface compliant
program on a channel. AGI allows Asterisk to launch external programs
written in any language to control a telephony channel, play audio,
read DTMF digits, etc. by communicating with the AGI protocol on stdin
and stdout.
  This channel will stop dialplan execution on hangup inside of this
application, except when using DeadAGI.  Otherwise, dialplan execution
will continue normally.
  A locally executed AGI script will receive SIGHUP on hangup from the channel
except when using DeadAGI. This can be disabled by setting the AGISIGHUP channel
variable to "no" before executing the AGI application.
  Using 'EAGI' provides enhanced AGI, with incoming audio available out of band
on file descriptor 3

  Use the CLI command 'agi show' to list available agi commands
  This application sets the following channel variable upon completion:
     AGISTATUS      The status of the attempt to the run the AGI script
                    text string, one of SUCCESS | FAILURE | HANGUP
Differenz des internen Hilfetexts von Asterisk 1.2 zu 1.4:
--- in Asterisk 1.2
+++ in Asterisk 1.4
@@ -9,9 +9,16 @@
   written in any language to control a telephony channel, play audio,
   read DTMF digits, etc. by communicating with the AGI protocol on stdin
   and stdout.
-  Returns -1 on hangup (except for DeadAGI) or if application requested
-   hangup, or 0 on non-hangup exit.
-  Using 'EAGI' provides enhanced AGI, with incoming audio available out of band
+    This channel will stop dialplan execution on hangup inside of this
+  application, except when using DeadAGI.  Otherwise, dialplan execution
+  will continue normally.
+    A locally executed AGI script will receive SIGHUP on hangup from the channel
+  except when using DeadAGI. This can be disabled by setting the AGISIGHUP channel
+  variable to "no" before executing the AGI application.
+    Using 'EAGI' provides enhanced AGI, with incoming audio available out of band
   on file descriptor 3

-  Use the CLI command 'show agi' to list available agi commands
+    Use the CLI command 'agi show' to list available agi commands
+    This application sets the following channel variable upon completion:
+       AGISTATUS      The status of the attempt to the run the AGI script
+                      text string, one of SUCCESS | FAILURE | HANGUP
Differenz des internen Hilfetexts von Asterisk 1.4 zu 1.6:
--- in Asterisk 1.4
+++ in Asterisk 1.6
@@ -4,21 +4,22 @@
   Executes AGI on a hungup channel

   [Description]
-    [E|Dead]AGI(command|args): Executes an Asterisk Gateway Interface compliant
-  program on a channel. AGI allows Asterisk to launch external programs
-  written in any language to control a telephony channel, play audio,
-  read DTMF digits, etc. by communicating with the AGI protocol on stdin
-  and stdout.
-    This channel will stop dialplan execution on hangup inside of this
-  application, except when using DeadAGI.  Otherwise, dialplan execution
-  will continue normally.
+    [E|Dead]AGI(command,args): Executes an Asterisk Gateway Interface compliant
+  program on a channel. AGI allows Asterisk to launch external programs written
+  in any language to control a telephony channel, play audio, read DTMF digits,
+  etc. by communicating with the AGI protocol on stdin and stdout.
+    As of 1.6.0, this channel will not stop dialplan execution on hangup inside
+  of this application. Dialplan execution will continue normally, even upon
+  hangup until the AGI application signals a desire to stop (either by exiting
+  or, in the case of a net script, by closing the connection).
     A locally executed AGI script will receive SIGHUP on hangup from the channel
-  except when using DeadAGI. This can be disabled by setting the AGISIGHUP channel
-  variable to "no" before executing the AGI application.
+  except when using DeadAGI. A fast AGI server will correspondingly receive a
+  HANGUP in OOB data. Both of these signals may be disabled by setting the
+  AGISIGHUP channel variable to "no" before executing the AGI application.
     Using 'EAGI' provides enhanced AGI, with incoming audio available out of band
-  on file descriptor 3
+  on file descriptor 3.

-    Use the CLI command 'agi show' to list available agi commands
+    Use the CLI command 'agi show' to list available agi commands.
     This application sets the following channel variable upon completion:
        AGISTATUS      The status of the attempt to the run the AGI script
-                      text string, one of SUCCESS | FAILURE | HANGUP
+                      text string, one of SUCCESS | FAILURE | NOTFOUND | HANGUP
Siehe auch
Abschnitt C.7, „AGI()“, Abschnitt C.45, „EAGI()“