David,
Just to clarify, are you sure you're not using this function twice
across the config?
Regards,
Ihor
Le 19/05/2026 à 06:15, David Escartin Almudevar via sr-users a écrit :
Hello,
I am seeing a possible issue with `uac_replace_to()` in Kamailio 6.1.2.
Version:
```text
kamailio 6.1.2 (x86_64/linux) 1b2dad-dirty
```
I am calling `uac_replace_to()` passing both a display name and a To URI.
```text
DEBUG: uac [uac.c:588]: ki_replace_to(): dsp=0x7ffca81777a0 (len=15) ,
uri=0x7ffca81777b0 (len=41)
DEBUG: uac [replace.c:341]: replace_uri(): adding new display ["+818067029073"]
DEBUG: uac [replace.c:368]: replace_uri(): uri to replace
[sip:[email protected]:5065]
DEBUG: uac [replace.c:369]: replace_uri(): replacement uri is
[sip:[email protected];user=phone]
DEBUG: uac [replace.c:434]: replace_uri(): Stored <_uac_to> var in dialog with
value sip:[email protected]:5065
DEBUG: uac [replace.c:454]: replace_uri(): Stored <_uac_tonew> var in dialog
with value sip:[email protected];user=phone
DEBUG: uac [replace.c:468]: replace_uri(): Stored <_uac_tdp> var in dialog with
value
DEBUG: uac [replace.c:483]: replace_uri(): Stored <_uac_tdpne> var in dialog with value
"+818067029073"
```
The replacement seems to work internally, but the outgoing INVITE sent to the
callee contains double angle brackets in the `To` header.
The resulting header is:
```text
To: "+818067029073" <<sip:[email protected];user=phone>>
```
And I get the folloing error when processing the response from UAS
```
May 19 03:42:19 ip-10-100-10-19 /usr/local/kamailio/sbin/kamailio[3562]: ERROR:
<core> [core/parser/parse_addr_spec.c:754]: parse_addr_spec(): unexpected char
[</60] in status 5: [+818067029073 <] .
May 19 03:42:19 ip-10-100-10-19 /usr/local/kamailio/sbin/kamailio[3562]: ERROR:
<core> [core/parser/parse_to.c:56]: parse_to_body(): bad to header
May 19 03:42:19 ip-10-100-10-19 /usr/local/kamailio/sbin/kamailio[3562]: ERROR: <core>
[core/parser/msg_parser.c:342]: parse_headers(): bad header field [To: +818067029073
<<sip:[email protected];user=phone>>;tag=1803SIPpTag011
May 19 03:42:19 ip-10-100-10-19 /usr/local/kamailio/sbin/kamailio[3562]: ERROR:
<core> [core/receive.c:398]: receive_msg(): parsing relevant headers failed
May 19 03:42:19 ip-10-100-10-19 /usr/local/kamailio/sbin/kamailio[3562]: ERROR:
<core> [core/receive.c:558]: receive_msg(): required headers not found in reply
```
If a pass the replace uri enclosed in brackets
(<sip:[email protected];user=phone>), then i obtain a To header with triple
<....> and I get the folowing error processing the response from callee
```text
May 19 03:43:31 ip-10-100-10-19 /usr/local/kamailio/sbin/kamailio[4136]: ERROR:
<core> [core/parser/parse_to.c:56]: parse_to_body(): bad to header
May 19 03:43:31 ip-10-100-10-19 /usr/local/kamailio/sbin/kamailio[4136]: ERROR: <core>
[core/parser/msg_parser.c:342]: parse_headers(): bad header field [To: +818067029073
<<<sip:[email protected];user=phone>>>;tag=1803SIPpTag012
```
Is this a known issue in 6.1.2, or am I passing the URI/display name in the
wrong format?
>From the debug logs, the replacement URI appears to be stored without angle
brackets, but the final generated `To` header contains:
```text
<<sip:[email protected];user=phone>>
```
Thanks in advance.
David Escartín
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