[asterisk-bugs] [JIRA] Commented: (ASTERISK-20294) Asterisk is unable to execute AGI commands longer than 2048 bytes

[Matt Jordan (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-20294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=196077#comment-196077 ] 

Matt Jordan commented on ASTERISK-20294:
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This is a limitation of AGI and is not a bug.  Changing this to accept commands greater than 2048 bytes, e.g., of unlimited length, would be an improvement.  You will also run into limitations in the dialplan for the length of allowed arguments to applications - so this is probably going to run into general improvements in other areas of Asterisk as well.

> Asterisk is unable to execute AGI commands longer than 2048 bytes
> -----------------------------------------------------------------
>
>                 Key: ASTERISK-20294
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20294
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_agi
>    Affects Versions: 10.7.0
>            Reporter: Pavlo Lavrenenko
>         Attachments: agi.log, testagi.pl
>
>
> Asterisk is unable to execute AGI commands longer than 2048 bytes, which are limited by statically allocated char buf[AGI_BUF_LEN]; buffer in res/res_agi.c::3466
> What was done:
> 1. Asterisk 10.7.0 from http://svn.asterisk.org/svn/asterisk/tags/10.7.0 configured and installed with --refix=/opt/asterisk-10.7.0;
> 2. Sample configs have been installed with make samples;
> 3. Peer added to sip.conf, Linksys UA registered;
> 4. exten => 000112, 1, AGI(/home/santa/sandbox/testagi.pl) added to [default] context in extensions.conf;
> 5. testagi.pl executes Background AGI application with concatenated promts as a parameter and total length > 4k;
> 6. A test call has been made to 000112.
> Expected results:
> Asterisk plays all the prompts sequentially.
> Real results:
> Asterisk reads up to 2048 bytes on each fgets() iteration, the command is being cutted up and not all prompts are being played.
> See agi log and testagi.pl code in attachment.

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