[sr-dev] [kamailio/kamailio] path: rr_callback wrong dst uri (#1205)
Rick
notifications at github.com
Fri Aug 4 11:02:14 CEST 2017
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### Description
Im using the path module on loadbalancer, the update to the path module, seems to break the default behavior.
<!--
Explain what you did, what you expected to happen, and what actually happened.
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### Troubleshooting
#### Reproduction
```
/* ----- rr params --------------------------------------------------------- */
/** add value to ;lr param (helps with some UAs) */
modparam("rr", "enable_full_lr", 1)
modparam("rr", "append_fromtag", 1)
/* ----- maxfwd params ----------------------------------------------------- */
modparam("maxfwd", "max_limit", 70)
/* ----- path params ------------------------------------------------------- */
modparam("path", "use_received", 1)
```
#### Debugging Data
#### Log Messages
<!--
Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->
```
2(71369) DEBUG: rr [loose.c:85]: is_preloaded(): is_preloaded: Yes
2(71369) DEBUG: <core> [core/socket_info.c:564]: grep_sock_info(): checking if host==us: 12==12 && [x.x.x.126] == [x.x.x.126]
2(71369) DEBUG: <core> [core/socket_info.c:567]: grep_sock_info(): checking if port 5060 (advertise 0) matches port 5060
2(71369) DEBUG: rr [loose.c:788]: after_loose(): Topmost route URI: 'sip:x.x.x.126;lr;received=sip:y.y.y.y:47056%3Btransport%3Dtls' is me
2(71369) DEBUG: <core> [core/parser/msg_parser.c:89]: get_hdr_field(): found end of header
2(71369) DEBUG: rr [loose.c:180]: find_next_route(): No next Route HF found
2(71369) DEBUG: rr [loose.c:813]: after_loose(): No next URI found
2(71369) DEBUG: rr [rr_cb.c:95]: run_rr_callbacks(): callback id 0 entered with <lr;received=sip:y.y.y.y:47056%3Btransport%3Dtls>
2(71369) DEBUG: <core> [core/strutils.c:214]: unescape_user(): unescaped string is <sip:y.y.y.y:47056;transport=tls>
2(71369) DEBUG: path [path.c:424]: path_rr_callback(): setting dst uri: sip:sip:y.y.y.y:47056%3Btranspo
2(71369) DEBUG: pv [pv_core.c:951]: pv_get_useragent(): no User-Agent header
2(71369) DEBUG: rr [loose.c:1068]: check_route_param(): route params checking against [;lr;received=sip:y.y.y.y:47056%3Btransport%3Dtls] (orig: [lr;received=sip:y.y.y.y:47056%3Btransport%3Dtls])
2(71369) DEBUG: rr [loose.c:1073]: check_route_param(): params are <;lr;received=sip:y.y.y.y:47056%3Btransport%3Dtls>
2(71369) DEBUG: tm [t_lookup.c:1302]: t_newtran(): msg id=4 , global msg id=4 , T on entrance=0x0
2(71369) DEBUG: tm [t_lookup.c:459]: t_lookup_request(): start searching: hash=16463, isACK=0
2(71369) DEBUG: tm [t_lookup.c:417]: matching_3261(): RFC3261 transaction matching failed
2(71369) DEBUG: tm [t_lookup.c:641]: t_lookup_request(): no transaction found
2(71369) DEBUG: <core> [core/md5utils.c:67]: MD5StringArray(): MD5 calculated: 076837eff630cf1e80bed191da066432
2(71369) DEBUG: <core> [core/parser/parse_uri.c:1262]: parse_uri(): parse_uri: bad char ':' in state 3 parsed: <sip:sip:y.y.y.y> (21) / <sip:sip:y.y.y.y:47056%3Btranspo> (37)
2(71369) ERROR: tm [./ut.h:245]: uri2dst2(): bad_uri: [sip:sip:y.y.y.y:47056%3Btranspo]
2(71369) ERROR: tm [t_fwd.c:1735]: t_forward_nonack(): failure to add branches
2(71369) DEBUG: tm [t_funcs.c:330]: t_relay_to(): t_forward_nonack returned error -478 (-478)
2(71369) DEBUG: tm [t_funcs.c:348]: t_relay_to(): -478 error reply generation delayed
2(71369) DEBUG: <core> [core/msg_translator.c:159]: check_via_address(): (x.x.x.124, x.x.x.124, 0)
2(71369) ERROR: sl [sl_funcs.c:362]: sl_reply_error(): stateless error reply used: Unresolvable destination (478/SL)
2(71369) DEBUG: <core> [core/receive.c:283]: receive_msg(): request-route executed in: 2594 usec
2(71369) DEBUG: tm [t_lookup.c:1458]: t_unref(): delayed error reply generation(-478)
2(71369) DEBUG: <core> [core/msg_translator.c:159]: check_via_address(): (x.x.x.124, x.x.x.124, 0)
2(71369) DEBUG: tm [t_reply.c:1631]: cleanup_uac_timers(): RETR/FR timers reset
2(71369) DEBUG: tm [t_reply.c:598]: _reply_light(): reply sent out. buf=0x8018e77b0: SIP/2.0 478 Unresolv..., shmem=0x8086bbc30: SIP/2.0 478 Unresolv
2(71369) DEBUG: tm [t_reply.c:608]: _reply_light(): finished
```
#### SIP Traffic
<!--
If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->
```
2017/08/04 10:27:55.690224 x.x.x.124:5060 -> x.x.x.126:5060
OPTIONS sip:user at y.y.y.y:43098;transport=TLS SIP/2.0
Via: SIP/2.0/UDP x.x.x.124:5060;branch=z9hG4bK2840489
Route: <sip:x.x.x.126;lr;received=sip:y.y.y.y:43098%3Btransport%3Dtls>
From: sip:pinger at hostname-xxx;tag=uloc-7c-5982da6d-4c09-11-0-7d68
To: sip:user at y.y.y.y:43098;transport=TLS
Call-ID: 1e57ca12-c3d5f614-8b5c49 at 5.159.56.124
CSeq: 1 OPTIONS
Content-Length: 0
```
### Possible Solutions
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If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix.
-->
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
# kamailio -v
version: kamailio 5.1.0-dev5 (x86_64/freebsd)
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, 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 8MB
poll method support: poll, select, kqueue.
id: unknown
compiled on 23:35:16 Aug 3 2017 with clang 3.8
```
* **Operating System**:
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Kernel details (output of `uname -a`)
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```
# uname -a
FreeBSD hostname-xxx 11.0-RELEASE-p9 FreeBSD 11.0-RELEASE-p9 #0: Tue Apr 11 08:48:40 UTC 2017 root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
```
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