[Devel] Blacklist and failover

[Bogdan-Andrei Iancu]

Hi Alex,

the 408 timeout was locally generated by openser or was received? if it 
is the first case, was there any provisional reply received from UAS?

I'm asking because a local generated 408 timeout with no reply received 
is considered a failure that triggers DNS-based failover (RFC3262) and 
if disable_dns_blacklist=no, the destination IP address will be 
blacklisted for 4 minutes.

can you check if this was the case?

you can inspect the content of the blacklist via MI command 
"list_blacklists"

regards,
bogdan


Alex wrote:
> Hello, 
>
>   
>> if you got into failure route, it was because of a negative reply - what 
>> was that code?  an IP because blacklisted only if it was a DNS-based 
>> failover which is not visible in failure_route (not triggered).
>>
>> can you post (or send privately) the debug log for such a call?
>>     
>
> Sorry, I can not send you log, but You can reproduce it with script below
>
> route {
>     xlog("L_ERR", "main route $rm $cs\n");
>     rewriteuri("sip:my ip:wrong port");
>     t_on_failure("1");
>     if (!t_relay())
> 	sl_reply_error();
> }
>
> failure_route[1] {
>     xlog("L_ERR", "failure_route $rm $cs\n");
>     append_branch("sip:my ip:another wrong port");
>     t_relay();
> }
>
> With this script i got next output:
>
> 1: main route REGISTER 1
> 2: main route REGISTER 1
> 3: main route REGISTER 1
> 4: failure_route REGISTER 1
> 5: main route REGISTER 1
>
> // "408 Request Timeout" was returned
>
> 6: main route REGISTER 1
>
> // "477 Unfortunately error on sending to next hop occurred (477/TM)" was returned
>
>