[SR-Users] [4.2.8] SUBSCRIBE message was not handled

[Daniel-Constantin Mierla]

Hello,

it means that the same SUBSCRIBE was aready processed and the current
one is a retransmission. Can you look at sip network traffic (using
ngrep, sngrep, ...) and see if there are two SUBSCRIBE requests received?

Cheers,
Daniel


On 05.10.17 11:34, Jack Wang wrote:
> Hello everyone,
>
> According to the routing flow set in kamailio.cfg
>
>  # handle retransmissions
>  if(t_precheck_trans()) {
>              t_check_trans();
>              exit;
>  }
> t_check_trans();
> After I traced the flow it seems that SUBSCRIBE message failed on
> t_check_trans() and stopped there.
> I add some logs to keep tracing this function and found that:
> int t_check_trans(struct sip_msg* msg) { struct cell* t; int branch;
> int ret; /* already processing a T */ if(is_route_type(FAILURE_ROUTE)
> || is_route_type(BRANCH_ROUTE) || is_route_type(BRANCH_FAILURE_ROUTE)
> || is_route_type(TM_ONREPLY_ROUTE)) { return 1; } if
> (msg->first_line.type==SIP_REPLY) { branch = 0; ret = (t_check_msg(
> msg , &branch)==1) ? 1 : -1; tm_ctx_set_branch_index(branch); return
> ret; } else if (msg->REQ_METHOD==METHOD_CANCEL) { return
> w_t_lookup_cancel(msg, 0, 0); } else { switch(t_check_msg(msg, 0)){
> case -2: /* possible e2e ack */ return 1; case 1: /* found */
> t=get_t(); if (msg->REQ_METHOD==METHOD_ACK){ /* ack to neg. reply or
> ack to local trans. => process it and end the script */ /* FIXME:
> there's no way to distinguish here between acks to local trans. and
> neg. acks */ if (unlikely(has_tran_tmcbs(t, TMCB_ACK_NEG_IN)))
> run_trans_callbacks(TMCB_ACK_NEG_IN, t, msg, 0, msg->REQ_METHOD);
> t_release_transaction(t); } else { /* is a retransmission */ if
> (unlikely(has_tran_tmcbs(t, TMCB_REQ_RETR_IN)))
> run_trans_callbacks(TMCB_REQ_RETR_IN, t, msg, 0, msg->REQ_METHOD);
> t_retransmit_reply(t); } /* no need for UNREF(t); set_t(0) - the
> end-of-script t_unref callback will take care of them */ return 0; /*
> exit from the script */ <---------------------------- THE POINT !!} /*
> not found or error */ } return -1; }
>
> If the line "return 0; /* exit from the script */" was changed to
> "return 1; /* exit from the script */" , it works ---- means that the
> configuration script can keep being proceeded now.
> Any suggestions?
>
>
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-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - www.asipto.com
Kamailio World Conference - www.kamailioworld.com

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