[sr-dev] [tracker] Task opened: tcp_connect_timeout has no effect (Attachment added)

[sip-router]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Iñaki Baz Castillo (ibc) 

Attached to Project - sip-router
Summary - tcp_connect_timeout has no effect
Task Type - Bug Report
Category - tcp
Status - Assigned
Assigned To - Andrei Pelinescu-Onciul
Operating System - Linux
Severity - Low
Priority - Normal
Reported Version - Development
Due in Version - Undecided
Due Date - Undecided
Details - It seems that tcp_connect_timeout has no effect at all. I set it to 3 seconds and try sending a request with RURI "sip:lalalala at 91.121.79.216:7777;transport=tcp". The server 91.121.79.216 refuses the TCP connection (REJECT action in iptables rather than DROP), try yourself:

  ~# telnet 91.121.79.216 7777                                                                                                                      
  Trying 91.121.79.216...                                                                                                                                                 
  telnet: Unable to connect to remote host: Connection refused

However when my Kamailio tries to open a TCP connection with such destination, it produces a local 408 after 30 seconds (fr_timer = 30000)!

Since Kamailio should detect that the TCP connection is rejected, I expect that it should generate a local 503 for the client transaction as RFC 3261 states, am I wrong?

PS: I attach the log of a call to "sip:lalalala at 91.121.79.216:7777;transport=tcp".

Kamailio info:

version: kamailio 3.2.0-dev5 (x86_64/linux) 552425                                                                                                                      
flags: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, DBG_QM_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES                                                                
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 4MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.                                                                                                        
id: 552425                                                                                                                                                              
compiled on 09:46:21 Jun 15 2011 with gcc 4.5.2

One or more files have been attached.

More information can be found at the following URL:
http://sip-router.org/tracker/index.php?do=details&task_id=136

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