### Description
I want convert INVITE message with SDP body to multypart body. To do this is
used patch for reference kamailio.cfg
```
[root@safarov-dell kamailio]# diff -u kamailio.cfg kamailio2.cfg
--- kamailio.cfg 2018-11-09 18:28:36.000000000 +0300
+++ kamailio2.cfg 2018-11-10 22:49:43.604132033 +0300
@@ -1,5 +1,10 @@
#!KAMAILIO
#
+#!define WITH_DEBUG
+#!define WITH_MYSQL
+#!define WITH_AUTH
+#!define WITH_USRLOCDB
+#
# Kamailio (OpenSER) SIP Server v5.2 - default configuration script
# - web: https://www.kamailio.org
# - git: https://github.com/kamailio/kamailio
@@ -286,6 +291,8 @@
loadmodule "debugger.so"
#!endif
+loadmodule "textopsx.so"
+
# ----------------- setting module-specific parameters ---------------
@@ -495,6 +502,10 @@
# account only INVITEs
if (is_method("INVITE")) {
setflag(FLT_ACC); # do accounting
+ set_body_multipart("test", "text/plain", "delimiter");
+ msg_apply_changes();
+ # # $var(b) = "7e Od 04 55 75 69 20 4d 61 6b 65 43 61 6c 6c";
+ # # append_body_part("$var(b)",
"application/vnd.cirpack.isdn-ext", "signal;handling=required");
}
# dispatch requests to foreign domains
```
After `msg_apply_changes` kamailio send INVITE without original SDP and without
trailing delimiter.
```
INVITE sip:safarov@192.168.100.28:43749;transport=tcp SIP/2.0
Record-Route: <sip:192.168.100.31;transport=tcp;r2=on;lr>
Record-Route: <sip:192.168.100.31;r2=on;lr>
Via: SIP/2.0/TCP
192.168.100.31;branch=z9hG4bK9a1.9a042f2f4fe26e1e0fa9b65185f3a733.0
Via: SIP/2.0/UDP
192.168.100.31:35060;received=192.168.100.31;rport=35060;branch=z9hG4bK1985869670
From: <sip:safarov@aio.kazoo>;tag=988293340
To: <sip:safarov@aio.kazoo>
Call-ID: 1851253425
CSeq: 21 INVITE
Contact: <sip:safarov@192.168.100.31:35060>
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE,
INFO
Max-Forwards: 69
User-Agent: Linphone/3.6.1 (eXosip2/3.6.0)
Subject: Phone call
Content-Length: 60
Content-Type: multipart/mixed;boundary="delimiter"
Mime-Version: 1.0
--delimiter
Content-Type: text/plain
test
--delimiter
```
### Troubleshooting
NA
#### Reproduction
1) Need to apply patch provided above;
2) create any sip account;
3) register SIP client using auth data for created sip account;
4) place call for created account.
#### Debugging Data
NA
#### Log Messages
[kamailio.log](https://github.com/kamailio/kamailio/files/2568706/kamailio.log)
#### SIP Traffic
[kamailio.pcapng.gz](https://github.com/kamailio/kamailio/files/2568707/kamailio.pcapng.gz)
### Possible Solutions
Not known
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
Tested current master
```
version: kamailio 5.3.0-dev0 (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 14:49:40 Nov 9 2018 with gcc 8.2.0
```
* **Operating System**:
```
/etc/kamailio # 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"
/etc/kamailio #
```
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