<p></p>
<p dir="auto">I incremented sess-version w/ value <code class="notranslate">2147483648</code> via <code class="notranslate">$sdp(sess_version) = -1</code> as well as <code class="notranslate">$sdp(sess_version) = 2147483648</code>.<br>
sess-version in SDP should be 2147483649 but is <code class="notranslate">-1941279658</code>.</p>
<h3 dir="auto">Troubleshooting</h3>
<p dir="auto"><a href="https://datatracker.ietf.org/doc/html/rfc4566#section-5.2" rel="nofollow">RFC4566 5.2. Origin ("o=")</a></p>
<pre class="notranslate"><code class="notranslate"> <sess-version> is a version number for this session description. Its
usage is up to the creating tool, so long as <sess-version> is
increased when a modification is made to the session data. Again,
it is RECOMMENDED that an NTP format timestamp is used.
</code></pre>
<p dir="auto"><a href="https://en.wikipedia.org/wiki/Network_Time_Protocol#Timestamps" rel="nofollow">Wikipedia NTP Timestamps</a></p>
<pre class="notranslate"><code class="notranslate">The 64-bit binary fixed-point timestamps used by NTP consist of a 32-bit part for seconds and a 32-bit part for fractional second, giving a time scale that rolls over every 232 seconds (136 years) and a theoretical resolution of 2−32 seconds (233 picoseconds). NTP uses an epoch of January 1, 1900. Therefore, the first rollover occurs on February 7, 2036.[28][29]
</code></pre>
<h4 dir="auto">Reproduction</h4>
<p dir="auto">Receive SDP w/ sess-version greater equal 2^31 (2147483648) and increase version via <code class="notranslate">$sdp(sess-version) = -1</code> or setting a value greater than 2^31.</p>
<h4 dir="auto">Log Messages</h4>
<pre class="notranslate"><code class="notranslate">May 02 06:43:20.578496 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} <core> [core/parser/sdp/sdp_helpr_funcs.c:622]: extract_sess_version(): oline(46): >o=user1 53655765 2147483648 IN IP4 127.0.0.1
<
May 02 06:43:20.578501 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} <core> [core/parser/sdp/sdp_helpr_funcs.c:651]: extract_sess_version(): end 10: >2147483648<
May 02 06:43:20.578508 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} <core> [core/parser/sdp/sdp_helpr_funcs.c:506]: extract_mediaip(): located IP address [127.0.0.1] in `o=' field
May 02 06:43:20.578512 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} <core> [core/parser/sdp/sdp_helpr_funcs.c:506]: extract_mediaip(): located IP address [127.0.0.1] in `c=' field
May 02 06:43:20.578532 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:1918]: sdp_get_sess_version(): sdp_session_num 0 sess-version: 2147483648
May 02 06:43:20.578536 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:1923]: sdp_get_sess_version(): sdp_session_num 1
May 02 06:43:20.578576 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:1918]: sdp_get_sess_version(): sdp_session_num 0 sess-version: 2147483648
May 02 06:43:20.578581 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:1923]: sdp_get_sess_version(): sdp_session_num 1
May 02 06:43:20.578695 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:2111]: pv_set_sdp(): res->flags: 24
May 02 06:43:20.578702 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:2112]: pv_set_sdp(): PV_TYPE_INT: 16
May 02 06:43:20.578705 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:2113]: pv_set_sdp(): PV_VAL_INT: 8
May 02 06:43:20.578708 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:2116]: pv_set_sdp(): param.pvn.u.isname.name.n = 1
May 02 06:43:20.578710 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:2125]: pv_set_sdp(): do $sdp(sess_version) = -1941279658
May 02 06:43:20.578713 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:1918]: sdp_get_sess_version(): sdp_session_num 0 sess-version: 2147483648
May 02 06:43:20.578716 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:1923]: sdp_get_sess_version(): sdp_session_num 1
May 02 06:43:20.578750 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:1971]: sdp_set_sess_version(): old_sess_version_num: -2147483648 autoincrement: 0
May 02 06:43:20.578756 debian11 /usr/sbin/kamailio[121163]: DEBUG: {1 2 INVITE 1-121317@127.0.0.1} sdpops [sdpops_mod.c:1972]: sdp_set_sess_version(): *new_sess_version_num: -1941279658 autoincrement: 0
</code></pre>
<h3 dir="auto">Possible Solutions</h3>
<h3 dir="auto">Additional Information</h3>
<ul dir="auto">
<li><strong>Kamailio Version</strong> - output of <code class="notranslate">kamailio -v</code></li>
</ul>
<pre class="notranslate"><code class="notranslate">version: kamailio 5.5.4 (x86_64/linux)
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, TLS_PTHREAD_MUTEX_SHARED
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 with gcc 10.2.1
</code></pre>
<ul dir="auto">
<li><strong>Operating System</strong>:</li>
</ul>
<pre class="notranslate"><code class="notranslate">Distributor ID: Debian
Description: Debian GNU/Linux 11 (bullseye)
Release: 11
Codename: bullseye
Linux debian11 5.10.0-13-amd64 #1 SMP Debian 5.10.106-1 (2022-03-17) x86_64 GNU/Linux
</code></pre>
<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />Reply to this email directly, <a href="https://github.com/kamailio/kamailio/issues/3099">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/ABO7UZKLLCJ5XPHTNPMRCGTVH6YNPANCNFSM5U3UTEZA">unsubscribe</a>.<br />You are receiving this because you are subscribed to this thread.<img src="https://github.com/notifications/beacon/ABO7UZPKIETP7T33PGSAIWTVH6YNPA5CNFSM5U3UTEZKYY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4SHBUJGQ.gif" height="1" width="1" alt="" /><span style="color: transparent; font-size: 0; display: none; visibility: hidden; overflow: hidden; opacity: 0; width: 0; height: 0; max-width: 0; max-height: 0; mso-hide: all">Message ID: <span><kamailio/kamailio/issues/3099</span><span>@</span><span>github</span><span>.</span><span>com></span></span></p>
<script type="application/ld+json">[
{
"@context": "http://schema.org",
"@type": "EmailMessage",
"potentialAction": {
"@type": "ViewAction",
"target": "https://github.com/kamailio/kamailio/issues/3099",
"url": "https://github.com/kamailio/kamailio/issues/3099",
"name": "View Issue"
},
"description": "View this Issue on GitHub",
"publisher": {
"@type": "Organization",
"name": "GitHub",
"url": "https://github.com"
}
}
]</script>