### Description
When using a combination of TopoS+UACreg+Dialog, Kamailio fails to match received replies to a transaction in a dialog.
### Troubleshooting
modparam("topos", "storage", "redis")
modparam("topos", "sanity_checks", 0)
modparam("topos", "contact_mode", 0)
modparam("dialog", "track_cseq_updates", 1)
#### Reproduction
Load Topos + UAC + Dialog modules. Enable dialog cseq tracking.
Add some uacrec record. Register with remote peer.
Make a call towards the remote peer.
INVITE
- Cseq: 1, Branch number: 0. Kamailio will receive a 401 challenge.
- Cseq: 2, Branch number: 1, it will include the Digest auth and try again. . The mangled topos Contact username will be slightly different (supposed to be?)
- Next, the UAS will reply with 100 Trying. In response to that, Kamailio keeps retransmitting the same INVITE with Cseq 2 over and over again, presumably because it fails to match that reply to an existing transaction.
#### Debugging Data
```
DEBUG: {2 2 INVITE a19dfac7c4a65} tm [t_lookup.c:1009]: t_reply_matching(): failure to match a transaction
```
#### Log Messages
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Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->
```
(paste your log messages here)
```
#### 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).
-->
```
2021/02/26 12:10:16.213947 10.10.10.2:5060 -> 10.10.10.1:5060
INVITE sip:8882223333 at mypbx.mydomain.net SIP/2.0
Via: SIP/2.0/UDP mysbc.mydomain.com:5060;branch=z9hG4bK4f81.97f17905fe7afced720300fea57ef462.0;i=6a
FROM: Demo Five<sip:2385 at mypbx.mydomain.net>;tag=29e99c29147f425f914b73512fc13cf3
TO: <sip:8882223333 at mypbx.mydomain.net>
CSEQ: 1 INVITE
CALL-ID: 33c9034c136e57de9c1278daef7d02fb
MAX-FORWARDS: 69
CONTENT-LENGTH: 575
MIN-SE: 300
SUPPORTED: timer
USER-AGENT: UA
CONTENT-TYPE: application/sdp
ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY
SESSION-EXPIRES: 3600
Contact: <sip:btpsh-603922bd-3db9-1 at mysbc.mydomain.com:5060>
2021/02/26 12:10:16.215650 10.10.10.1:5060 -> 10.10.10.2:5060
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP mysbc.mydomain.com:5060;branch=z9hG4bK4f81.97f17905fe7afced720300fea57ef462.0;i=6a;received=10.10.10.2;rport=5060
From: Demo Five<sip:2385 at mypbx.mydomain.net>;tag=29e99c29147f425f914b73512fc13cf3
To: <sip:8882223333 at mypbx.mydomain.net>;tag=as7c952f5b
Call-ID: 33c9034c136e57de9c1278daef7d02fb
CSeq: 1 INVITE
Server: B2B
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer, path
WWW-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="4f8fcced"
Content-Length: 0
2021/02/26 12:10:16.238191 10.10.10.2:5060 -> 10.10.10.1:5060
ACK sip:8882223333 at mypbx.mydomain.net SIP/2.0
FROM: Demo Five<sip:2385 at mypbx.mydomain.net>;tag=29e99c29147f425f914b73512fc13cf3
To: <sip:8882223333 at mypbx.mydomain.net>;tag=as7c952f5b
CSEQ: 1 ACK
CALL-ID: 33c9034c136e57de9c1278daef7d02fb
MAX-FORWARDS: 69
Via: SIP/2.0/UDP mysbc.mydomain.com:5060;branch=z9hG4bK4f81.97f17905fe7afced720300fea57ef462.0;i=6a
CONTENT-LENGTH: 0
2021/02/26 12:10:16.280455 10.10.10.2:5060 -> 10.10.10.1:5060
INVITE sip:8882223333 at mypbx.mydomain.net SIP/2.0
Via: SIP/2.0/UDP mysbc.mydomain.com:5060;branch=z9hG4bK4f81.97f17905fe7afced720300fea57ef462.1.cs1;i=6a
FROM: Demo Five<sip:2385 at mypbx.mydomain.net>;tag=29e99c29147f425f914b73512fc13cf3
TO: <sip:8882223333 at mypbx.mydomain.net>
CSEQ: 2 INVITE
CALL-ID: 33c9034c136e57de9c1278daef7d02fb
MAX-FORWARDS: 69
CONTENT-LENGTH: 575
MIN-SE: 300
SUPPORTED: timer
USER-AGENT: UA
CONTENT-TYPE: application/sdp
ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY
SESSION-EXPIRES: 3600
Authorization: Digest username="2385", realm="asterisk", nonce="4f8fcced", uri="sip:8882223333 at mypbx.mydomain.net", response="ec1986d94b9a508c4e9761c3c1cb80eb", algorithm=MD5
Contact: <sip:btpsh-603922bd-3db0-4 at mysbc.mydomain.com:5060>
2021/02/26 12:10:16.284672 10.10.10.1:5060 -> 10.10.10.2:5060
SIP/2.0 100 Trying
Via: SIP/2.0/UDP mysbc.mydomain.com:5060;branch=z9hG4bK4f81.97f17905fe7afced720300fea57ef462.1.cs1;i=6a;received=10.10.10.2;rport=5060
From: Demo Five<sip:2385 at mypbx.mydomain.net>;tag=29e99c29147f425f914b73512fc13cf3
To: <sip:8882223333 at mypbx.mydomain.net>
Call-ID: 33c9034c136e57de9c1278daef7d02fb
CSeq: 2 INVITE
Server: B2B
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer, path
Session-Expires: 900;refresher=uas
Contact: <sip:8882223333 at 10.10.10.1:5060>
Content-Length: 0
2021/02/26 12:10:16.745320 10.10.10.2:5060 -> 10.10.10.1:5060
INVITE sip:8882223333 at mypbx.mydomain.net SIP/2.0
Via: SIP/2.0/UDP mysbc.mydomain.com:5060;branch=z9hG4bK4f81.97f17905fe7afced720300fea57ef462.1.cs1;i=6a
FROM: Demo Five<sip:2385 at mypbx.mydomain.net>;tag=29e99c29147f425f914b73512fc13cf3
TO: <sip:8882223333 at mypbx.mydomain.net>
CSEQ: 2 INVITE
CALL-ID: 33c9034c136e57de9c1278daef7d02fb
MAX-FORWARDS: 69
CONTENT-LENGTH: 575
MIN-SE: 300
SUPPORTED: timer
USER-AGENT: UA
CONTENT-TYPE: application/sdp
ALLOW: INVITE,ACK,OPTIONS,CANCEL,BYE,NOTIFY
SESSION-EXPIRES: 3600
Authorization: Digest username="2385", realm="asterisk", nonce="4f8fcced", uri="sip:8882223333 at mypbx.mydomain.net", response="ec1986d94b9a508c4e9761c3c1cb80eb", algorithm=MD5
Contact: <sip:btpsh-603922bd-3db0-4 at mysbc.mydomain.com:5060>
```
### Possible Solutions
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If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix.
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### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
version: kamailio 5.5.0-dev4 (x86_64/linux) 5ad3bd
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
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: 5ad3bd
compiled on 15:35:01 Feb 11 2021 with gcc 4.9.2
```
* **Operating System**:
<!--
Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...;
Kernel details (output of `uname -a`)
-->
```
Debian GNU/Linux 8 (jessie)
```
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https://github.com/kamailio/kamailio/issues/2654
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