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### Description the counting and values provides by $hfl and $hflc are wrong and imcomplete
<!-- Explain what you did, what you expected to happen, and what actually happened. -->
### Troubleshooting
#### Reproduction
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#### Debugging Data
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gdb /path/to/kamailio /path/to/corefile bt full info locals list
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``` route { $var(hname) = "Record-Route"; if (is_present_hf_pv("$var(hname)")){
$var(i) = 0; $var(hdrc) = $hflc($var(hname)); xlog("there are $var(hdrc) values for $var(hname)\r\n"); xlog("------------------------------------------\r\n"); while ($var(i) < $var(hdrc)){ $var(val) = $(hfl($var(hname))[$var(i)]); $var(sip_header_ip) = $(var(val){nameaddr.uri}{uri.host}); if ($var(sip_header_ip) != 0){ xlog("checking $var(sip_header_ip) in $var(hname) \r\n"); } $var(i) = $var(i) + 1;
} } }
```
#### Log Messages
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``` 0(3729) ERROR: <script>: there are 2 values for Record-Route 0(3729) ERROR: <script>: ------------------------------------------ 0(3729) ERROR: <script>: checking 1.1.1.1 in Record-Route 0(3729) ERROR: <script>: checking 2.2.2.2 in Record-Route ```
#### Expected Results ``` 0(3729) ERROR: <script>: there are 3 values for Record-Route 0(3729) ERROR: <script>: ------------------------------------------ 0(3729) ERROR: <script>: checking 1.1.1.1 in Record-Route 0(3729) ERROR: <script>: checking 2.2.2.2 in Record-Route 0(3729) ERROR: <script>: checking 3.3.3.3 in Record-Route ```
#### 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). -->
``` INVITE sip:+3226200866;trunk=PkGHOlui@127.0.0.1:5060;cid=EMDLfGdgrDD SIP/2.0 Via: SIP/2.0/UDP 127.0.0.1:3030;branch=z9hG4bK-3708-1-0 Record-Route: sip:1.1.1.1;lr=on;nat=yes Record-Route: sip:2.2.2.2:5060;lr;transport=udp,sip:3.3.3.3:22506;lr;transport=udp From: sip:8325000000@127.0.0.1:5060;tag=3708SIPpTag091 To: sip:++212-94939-43433226200866@127.0.0.1:5060 Call-ID: 1-3708@127.0.0.1 CSeq: 1 INVITE Max-Forwards: 70 Content-Type: application/sdp ```
### Possible Solutions
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### Additional Information
* **Kamailio Version** - output of `kamailio -v`
``` version: kamailio 5.6.1 (x86_64/linux) flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: unknown compiled with gcc 10.2.1 ```
* **Operating System**:
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``` (paste your output here) ```
OK it seems with static name the results are the one expected.
so $hflc(Record-Route) will not give the same results as $hflc($var(hname)) $var(hname) being Record-Route
Good to know, we probably should document this in the cook book, if not already there.
Added support for detecting known headers provided with variable. If not working, open a new issue providing log messages with debug=3.
Closed #3194 as completed.