[asterisk-bugs] [JIRA] (ASTERISK-21065) Asterisk 11 TCP AGI fail

[Jeremy Kister (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-21065?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=202829#comment-202829 ] 

Jeremy Kister commented on ASTERISK-21065:
------------------------------------------


{noformat}
2. You put in localhost:port/url
{noformat}

that fails [mostly] the same way:
{code}
[Feb 12 12:55:46] DEBUG[14462][C-00000002]: netsock2.c:138 ast_sockaddr_split_hostport: Splitting 'localhost:4573' into...
[Feb 12 12:55:46] DEBUG[14462][C-00000002]: netsock2.c:192 ast_sockaddr_split_hostport: ...host 'localhost' and port '4573'.
[Feb 12 12:55:46] ERROR[14462][C-00000002]: utils.c:1187 ast_carefulwrite: write() returned error: Connection refused
[Feb 12 12:55:46] WARNING[14462][C-00000002]: res_agi.c:1528 launch_netscript: Connect to 'agi://localhost:4573/url=http%3A%2F%2Fexample.net%3A8081%2Fcgi-bin%2Favxml' failed: Connection refused
{code}

{noformat}
1. You put in the explicit IPv4 address/port that you are listening on?
{noformat}

that works..  okay, so it's some sort of ipv6 resolver issue?

{code}
pbx1> dig a localhost
[...]
;; ANSWER SECTION:
localhost.              0       IN      A       127.0.0.1
{code}

hmm.

{code}
pbx1> grep localhost /etc/hosts
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
{code}

okay, interesting.  my host has some ipv6 on the interfaces-- but it's all default:
{code}
pbx1> ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:00:29:07:00:8e  
          inet addr:10.9.1.3  Bcast:10.9.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe07:398e/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:25200579 errors:5 dropped:2 overruns:0 frame:0
          TX packets:21607036 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:4288193164 (3.9 GiB)  TX bytes:3481644916 (3.2 GiB)
          Interrupt:18 Base address:0x2000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:501151 errors:0 dropped:0 overruns:0 frame:0
          TX packets:501151 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:60945765 (58.1 MiB)  TX bytes:60945765 (58.1 MiB)
{code}

commenting out the ipv6 localhost in /etc/hosts hides the problem.

                
> Asterisk 11 TCP AGI fail
> ------------------------
>
>                 Key: ASTERISK-21065
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21065
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_agi
>    Affects Versions: 11.2.1
>            Reporter: Jeremy Kister
>         Attachments: 21065-1.patch, console_debug.txt, console.txt, extensions.conf
>
>
> exten => 1,1,AGI(agi://localhost/foo) always fails with "Connect failed"

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