[sr-dev] [kamailio/kamailio] include_hf_value: Not expected behaviour (#1629)

[sergey-safarov]

### Description

I want modify `Accept` header using include_hf_value. Need to add additional values to current. I do this using.
```
include_hf_value("Accept", "application/sdp");
include_hf_value("Accept", "application/pidf+xml");
```
Expected result in SIP message
```
Accept: application/sdp, application/pidf+xml
```
Realy i get
```
Accept: application/sdp
Accept: application/pidf+xml
```

### Troubleshooting

#### Reproduction
Need to add this to kamailio config
```
Accept: application/sdp
Accept: application/pidf+xml
```

#### Debugging Data
None

#### Log Messages
None

#### SIP Traffic

PCAP file is attached.

### Possible Solutions
None

### Additional Information
Used kamailio 5.1 branch commit 9f04def504051dc8da3989b1f96e4b6633d31a75
Docker container kamailio/kamailio-ci
```
/ # kamailio -v
version: kamailio 5.1.5 (x86_64/linux) 
flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, 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_BLACKLIST, HAVE_RESOLV_RES
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 on 10:41:20 Aug 23 2018 with gcc 6.4.0
```

* **Operating System**:

```
/ # cat /etc/os-release 
NAME="Alpine Linux"
ID=alpine
VERSION_ID=3.8.0
PRETTY_NAME="Alpine Linux v3.8"
HOME_URL="http://alpinelinux.org"
BUG_REPORT_URL="http://bugs.alpinelinux.org"
/ # uname -a
Linux 088bedf3b82f 4.14.13-300.fc27.x86_64 #1 SMP Thu Jan 11 04:00:01 UTC 2018 x86_64 Linux
```


-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/kamailio/kamailio/issues/1629
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kamailio.org/pipermail/sr-dev/attachments/20180901/2c08eb17/attachment.html>