[asterisk-users] [1.4.39.1/AGI] ast_carefulwrite: write() returned error: Broken pipe

[Warren Selby]

You're not properly reading in the response after each NoOp you send out. Each time you send something to asterisk in AGI, you must read the response in your script. 

Thanks,
--Warren Selby, dCAP

On Feb 22, 2011, at 4:39 AM, Gilles <codecomplete at free.fr> wrote:

> Hello
> 
>    Incoming calls from the FXO trigger an AGI script which simply NOOP
> data sent by Asterisk through stdin.
> 
> The first two NOOP work fine, but after this, Asterisk isn't happy:
> 
> ============= extensions.conf
> ...
> [from_fxo]
> exten => s,1,Wait(2)
> exten => s,n,Set(CID=${CALLERID(num)})
> exten => s,n,AGI(/var/tmp/test.lua)
> exten => s,n,Wait(5)
> exten => s,n,Hangup
> 
> ============= /var/tmp/test.lua
> #!/usr/bin/lua
> 
> --Must empty stdin for CHANNEL STATUS to work
> while true do
>        local line = io.read()
>        if line == "" then break end
>        io.write("NOOP ",line,"\n")
> end
> 
> ============= Console
> centos*CLI>
>    -- Starting simple switch on 'DAHDI/1-1'
>    -- Executing [s at from_fxo:1] Wait("DAHDI/1-1", "2") in new stack
>    -- Executing [s at from_fxo:2] Set("DAHDI/1-1", "CID=123465") in new
> stack
>    -- Executing [s at from_fxo:3] AGI("DAHDI/1-1", "/var/tmp/test.lua")
> in new stack
>    -- Launched AGI Script /var/tmp/test.lua
> AGI Tx >> agi_request: /var/tmp/test.lua
> AGI Tx >> agi_channel: DAHDI/1-1
> AGI Tx >> agi_language: en
> AGI Tx >> agi_type: DAHDI
> AGI Tx >> agi_uniqueid: 1298367207.9
> AGI Tx >> agi_callerid: 0177628460
> AGI Tx >> agi_calleridname: unknown
> AGI Tx >> agi_callingpres: 0
> AGI Tx >> agi_callingani2: 0
> AGI Tx >> agi_callington: 0
> AGI Tx >> agi_callingtns: 0
> AGI Tx >> agi_dnid: unknown
> AGI Tx >> agi_rdnis: unknown
> AGI Tx >> agi_context: from_fxo
> AGI Tx >> agi_extension: s
> AGI Tx >> agi_priority: 3
> AGI Tx >> agi_enhanced: 0.0
> AGI Tx >> agi_accountcode:
> AGI Tx >>
> AGI Rx << NOOP agi_request: /var/tmp/test.lua
> AGI Tx >> 200 result=0
> AGI Rx << NOOP agi_channel: DAHDI/1-1
> AGI Tx >> 200 result=0
> [Feb 22 10:33:30] ERROR[5444]: utils.c:967 ast_carefulwrite: write()
> returned error: Broken pipe
> AGI Rx << NOOP agi_language: en
> AGI Tx >> 200 result=0
> [Feb 22 10:33:30] ERROR[5444]: utils.c:967 ast_carefulwrite: write()
> returned error: Broken pipe
> =================
> 
> Has someone experienced the same thing? Am I doing it wrong, or is
> 1.4.39.1 broken and I should downgrade to a known, good build?
> 
> Thank you.
> 
> 
> --
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