[BUG] B2BUA does not add < > brackets in generated To-Headers for reponses (for requests this was fixed, cf. issue 2843)

Summary Bug Description

The bug described in https://github.com/OpenSIPS/opensips/issues/2843 has not been fixed for replies. I run into a case with a 407 reply (to an INVITE request, via B2BUA), where he SIP-URI of the To Header Field is still not enclosed in angle brackets (<....>) as in the following example (A calls B via a B2BUA):

In (from B): To: <sip:0123456789@example.com>;tag=8e14b31b8709851a3d139fba84110914.5f1bdd99
Out: (to A) To: sip:0123456789@example.com;tag=B2B.256.222.1718881474.159853479

Reproduce Behavior:

Relevant Parts of Configuration:

[...]
loadmodule "b2b_entities.so"
loadmodule "b2b_logic.so"
modparam("b2b_entities", "script_req_route", "b2b_request")
modparam("b2b_entities", "script_reply_route", "b2b_reply")
modparam("b2b_logic", "custom_headers", "Proxy-Authenticate;Test")

route{
  [...]
  if (  is_method("INVITE") && !has_totag() ) {
      b2b_init_request("top hiding");
      exit;
  } 
  [...]
}

route[b2b_request] {
  xlog("b2b_request ($ci)\n");
}

route[b2b_reply] {
 xlog("b2b_reply ($ci)\n");
}

[...]

Steps to reproduce behavior
1. Start OpenSIPS (containing above B2BUA "top hiding" configuration)
2. A sends an INVITE to B
3. Proxy sends back a "407 Proxy Authentication Required" response
4. Inspect traces
5. Look at the To Header Field

Expected behavior

In (from B): To: <sip:0123456789@example.com>;tag=8e14b31b8709851a3d139fba84110914.5f1bdd99
Out: (to A) To: <sip:0123456789@example.com>;tag=B2B.256.222.1718881474.159853479

Observed behavior

In (from B): To: <sip:0123456789@example.com>;tag=8e14b31b8709851a3d139fba84110914.5f1bdd99
Out: (to A) To: sip:0123456789@example.com;tag=B2B.256.222.1718881474.159853479

Relevant System Logs

N/A

OS/environment information

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 24.04 LTS
Release:    24.04
Codename:   noble

$ uname -a
Linux imp-test 6.8.0-35-generic #35-Ubuntu SMP PREEMPT_DYNAMIC Mon May 20 15:51:52 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

$ opensips -V
version: opensips 3.4.5 (x86_64/linux)
flags: STATS: On, DISABLE_NAGLE, USE_MCAST, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC, HP_MALLOC, DBG_MALLOC, FAST_LOCK-ADAPTIVE_WAIT
ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535
poll method support: poll, epoll, sigio_rt, select.
git revision: 099e771b3
main.c compiled on  with gcc 13

Additional context

Related Bug report: https://github.com/OpenSIPS/opensips/issues/2843
Related Commit: https://github.com/OpenSIPS/opensips/commit/9af192693f419751ff3fc704d5286274752171b1

Note that this bug appears to have been fixed only for requests, but not replies

OpenSIPS / opensips

[BUG] B2BUA does not add < > brackets in generated To-Headers for reponses (for requests this was fixed, cf. issue 2843) #3419