[asterisk-dev] Problem using the sip_header-function

Michael Hirschbichler sipp at hirschbichler.biz
Thu May 8 10:21:26 CDT 2008

Watkins, Bradley schrieb:
> Michael Hirschbichler wrote:
>> Yeah! You were right, the console output looks now this way:
>>   Executing [1226 at sip-incoming:2] NoOp("SIP/1226-081e44b0", 
>> "First Via: 
>> SIP/2.0/UDP;branch=z9hG4bK8c22.c21cc2c2.0 Second Via: 
>> SIP/2.0/UDP;branch=z9hG4bK8c22.c21cc2c2.0 Third Via: 
>> SIP/2.0/UDP 
>>;received=;branch=z9hG4bK4ce3b398") in 
>> new stack
> My only "solution" has been to grab the header(s) I need ASAP and store
> them in channel variables.  Then I can use them later whenever I
> actually need them.
> This obviously may or may not work for you and your application, but
> it's the only thing I've got. :)

Hmm, as I am quite new to Asterisk, I do not really understand this 
timing problem:
In the extensions.conf, the lines look this way:

exten => 1226,1,NoOp(First Via: ${SIP_HEADER(VIA,1)} Second Via: 
${SIP_HEADER(VIA,2)} Third Via: ${SIP_HEADER(VIA,3)})
exten => 1226,n,agi,dosomething.pl|${SIP_HEADER(VIA,1)}
exten => 1226,n,agi,dosomething.pl|${SIP_HEADER(VIA,2)}
exten => 1226,n,agi,dosomething.pl|${SIP_HEADER(Via,3)}

so, in line 1, I still have the Vias available, in the following lines, 
they are gone?

Thanks and BR

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