QuincyGao created an issue (kamailio/kamailio#4189)
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### Description
<!--
Explain what you did, what you expected to happen, and what actually happened.
-->
I used dmq on two machines, registered two softphones on the 111 machine, and then used one phone to call another. After the call was connected, dmq sent a dialog message with an error message 400 bad request.
Here is the 111 config, 113 almost same to 111:
```
loadmodule "dmq.so"
modparam("dmq", "server_address", "sip:172.16.4.111:5464")
modparam("dmq", "server_socket", "udp:172.16.4.111:5464")
modparam("dmq", "notification_address", "sip:172.16.4.113:5464")
modparam("dmq", "notification_channel", "peers")
modparam("dmq", "num_workers", 4)
modparam("dmq", "ping_interval", 30)
loadmodule "dmq_usrloc.so"
modparam("dmq_usrloc", "enable", 1)
modparam("dmq_usrloc", "sync", 1)
modparam("dmq_usrloc", "batch_msg_contacts", 50) # 50 contacts / message
modparam("dmq_usrloc", "batch_size", 10000) # 10000 contacts / batch
modparam("dmq_usrloc", "batch_usleep", 500000)
loadmodule "dialog.so"
modparam("dialog", "enable_stats", 1)
modparam("dialog", "enable_dmq", 1)
...
if (is_method("INVITE")) {
setflag(FLT_ACC); # do accounting
dlg_manage();
}
```
Here is the sip:
<img width="836" alt="Image" src="https://github.com/user-attachments/assets/df609e21-77bb-43e9-a8aa-112069a3…" />
the 113 log error:
```
dialog [dlg_dmq.c:127]: dlg_dmq_handle_msg(): no content length header found
```
### Troubleshooting
#### Reproduction
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If the issue can be reproduced, describe how it can be done.
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The inevitable bug
#### Debugging Data
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local variables and the list of the code at the issue location.
gdb /path/to/kamailio /path/to/corefile
bt full
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```
(paste your debugging data here)
```
#### Log Messages
<!--
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).
-->
```
113 log:
22(4389) DEBUG: <core> [core/udp_server.c:708]: udp_rcv_loop(): received on udp socket: (106/100/767) [[KDMQ sip:dialog@172.16.4.113:5464 SIP/2.0 0D 0A Via: SIP/2.0/UDP 172.16.4.111:5464;branch=z9hG4bK28e.2ec7]]
22(4389) DEBUG: <core> [core/receive.c:190]: ksr_evrt_received(): event route core:msg-received not defined
22(4389) DEBUG: <core> [core/parser/parse_fline.c:249]: parse_first_line(): first line type 1 (request) flags 1
22(4389) DEBUG: <core> [core/parser/msg_parser.c:722]: parse_msg(): SIP Request:
22(4389) DEBUG: <core> [core/parser/msg_parser.c:724]: parse_msg(): method: <KDMQ>
22(4389) DEBUG: <core> [core/parser/msg_parser.c:726]: parse_msg(): uri: <sip:dialog@172.16.4.113:5464>
22(4389) DEBUG: <core> [core/parser/msg_parser.c:728]: parse_msg(): version: <SIP/2.0>
22(4389) DEBUG: <core> [core/parser/parse_hname2.c:316]: parse_sip_header_name(): parsed header name [Via] type 1
22(4389) DEBUG: <core> [core/parser/parse_via.c:1312]: parse_via_param(): Found param type 232, <branch> = <z9hG4bK28e.2ec78467000000000000000000000000.0>; state=16
22(4389) DEBUG: <core> [core/parser/parse_via.c:2663]: parse_via(): end of header reached, state=5
22(4389) DEBUG: <core> [core/parser/msg_parser.c:592]: parse_headers(): Via found, flags=2
22(4389) DEBUG: <core> [core/parser/msg_parser.c:594]: parse_headers(): this is the first via
22(4389) DEBUG: <core> [core/parser/parse_hname2.c:316]: parse_sip_header_name(): parsed header name [To] type 3
22(4389) DEBUG: <core> [core/parser/parse_addr_spec.c:904]: parse_addr_spec(): end of header reached, state=10
22(4389) DEBUG: <core> [core/parser/msg_parser.c:173]: get_hdr_field(): <To> [32]; uri=[sip:dialog@172.16.4.113:5464]
22(4389) DEBUG: <core> [core/parser/msg_parser.c:176]: get_hdr_field(): to body (32)[<sip:dialog@172.16.4.113:5464>
], to tag (0)[]
22(4389) DEBUG: <core> [core/parser/parse_hname2.c:316]: parse_sip_header_name(): parsed header name [From] type 4
22(4389) DEBUG: <core> [core/parser/parse_hname2.c:316]: parse_sip_header_name(): parsed header name [CSeq] type 5
22(4389) DEBUG: <core> [core/parser/msg_parser.c:154]: get_hdr_field(): cseq <CSeq>: <10> <KDMQ>
22(4389) DEBUG: <core> [core/parser/parse_hname2.c:316]: parse_sip_header_name(): parsed header name [Call-ID] type 6
22(4389) DEBUG: <core> [core/receive.c:397]: receive_msg(): --- received sip message - request - call-id: [6ecc0d71033645ea-1972(a)172.16.4.111] - cseq: [10 KDMQ]
22(4389) DEBUG: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| <core> [core/receive.c:263]: ksr_evrt_pre_routing(): event route core:pre-routing not defined
22(4389) DEBUG: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| <core> [core/receive.c:474]: receive_msg(): preparing to run routing scripts...
22(4389) exec: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| *** cfgtrace:dbg_cfg_trace(): request_route=[DEFAULT_ROUTE] c=[/usr/local/bin/../etc/kamailio/conf/kamailio.cfg] l=584 a=26 n=xlog
22(4389) INFO: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| <script>: 172.16.4.111:5464|172.16.4.113:5464|udp|KDMQ
22(4389) exec: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| *** cfgtrace:dbg_cfg_trace(): request_route=[DEFAULT_ROUTE] c=[/usr/local/bin/../etc/kamailio/conf/kamailio.cfg] l=592 a=16 n=if
22(4389) exec: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| *** cfgtrace:dbg_cfg_trace(): request_route=[DEFAULT_ROUTE] c=[/usr/local/bin/../etc/kamailio/conf/kamailio.cfg] l=589 a=25 n=is_method
22(4389) exec: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| *** cfgtrace:dbg_cfg_trace(): request_route=[DEFAULT_ROUTE] c=[/usr/local/bin/../etc/kamailio/conf/kamailio.cfg] l=590 a=24 n=dmq_process_message
22(4389) DEBUG: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| dmq [message.c:154]: ki_dmq_process_message_rc(): dmq_handle_message [KDMQ sip:dialog@172.16.4.113:5464]
22(4389) DEBUG: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| dmq [message.c:168]: ki_dmq_process_message_rc(): dmq_handle_message peer found: dialog
22(4389) DEBUG: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| <core> [core/parser/parse_addr_spec.c:185]: parse_to_param(): add param: tag=6c399121368d030ed41b62758342ea91-0405b528
22(4389) DEBUG: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| <core> [core/parser/parse_addr_spec.c:904]: parse_addr_spec(): end of header reached, state=29
22(4389) DEBUG: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| dialog [dlg_dmq.c:124]: dlg_dmq_handle_msg(): dmq message received
22(4389) ERROR: |25-03-26 15:25:01|6ecc0d71033645ea-1972@172.16.4.111| dialog [dlg_dmq.c:127]: dlg_dmq_handle_msg(): no content length header found
```
#### 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).
-->
```
(paste your sip traffic here)
```
### 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.
-->
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
version: kamailio 5.8.5 (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, MEM_JOIN_FREE, 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_SEND_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:
compiled on 11:27:01 Mar 21 2025 with gcc 4.8.5
```
* **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 `lsb_release -a` and `uname -a`)
-->
```
centos7.9
```
--
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https://github.com/kamailio/kamailio/issues/4189
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Message ID: <kamailio/kamailio/issues/4189(a)github.com>
Module: kamailio
Branch: master
Commit: a0a870118a7fdf7993114741eee6e299e9fbb963
URL: https://github.com/kamailio/kamailio/commit/a0a870118a7fdf7993114741eee6e29…
Author: Kamailio Dev <kamailio.dev(a)kamailio.org>
Committer: Kamailio Dev <kamailio.dev(a)kamailio.org>
Date: 2025-07-21T14:31:09+02:00
modules: readme files regenerated - sipdump ... [skip ci]
---
Modified: src/modules/sipdump/README
---
Diff: https://github.com/kamailio/kamailio/commit/a0a870118a7fdf7993114741eee6e29…
Patch: https://github.com/kamailio/kamailio/commit/a0a870118a7fdf7993114741eee6e29…
---
diff --git a/src/modules/sipdump/README b/src/modules/sipdump/README
index a8cf9a6a544..a5714e7c411 100644
--- a/src/modules/sipdump/README
+++ b/src/modules/sipdump/README
@@ -193,7 +193,7 @@ modparam("sipdump", "wait", 2000)
If set to 1, the module uses a pthread mutex and contion to signal when
SIP messages are available to the writer process. It should use less
- CPU when idle (on no SIP traffic) than the default pooling on timer,
+ CPU when idle (on no SIP traffic) than the default polling on timer,
but be sure that the OS supports process-shared pthread mutexes and
conditions (latest Linux distros have support for them).
Module: kamailio
Branch: master
Commit: f0e1327bd6b01458cda0105929cb2a2d438a2dd7
URL: https://github.com/kamailio/kamailio/commit/f0e1327bd6b01458cda0105929cb2a2…
Author: Daniel-Constantin Mierla <miconda(a)gmail.com>
Committer: Daniel-Constantin Mierla <miconda(a)gmail.com>
Date: 2025-07-21T14:23:17+02:00
sipdump: docs - small typo
---
Modified: src/modules/sipdump/doc/sipdump_admin.xml
---
Diff: https://github.com/kamailio/kamailio/commit/f0e1327bd6b01458cda0105929cb2a2…
Patch: https://github.com/kamailio/kamailio/commit/f0e1327bd6b01458cda0105929cb2a2…
---
diff --git a/src/modules/sipdump/doc/sipdump_admin.xml b/src/modules/sipdump/doc/sipdump_admin.xml
index f8627d192b6..c345a389b1b 100644
--- a/src/modules/sipdump/doc/sipdump_admin.xml
+++ b/src/modules/sipdump/doc/sipdump_admin.xml
@@ -145,7 +145,7 @@ modparam("sipdump", "wait", 2000)
<para>
If set to 1, the module uses a pthread mutex and contion to signal
when SIP messages are available to the writer process. It should
- use less CPU when idle (on no SIP traffic) than the default pooling
+ use less CPU when idle (on no SIP traffic) than the default polling
on timer, but be sure that the OS supports process-shared pthread
mutexes and conditions (latest Linux distros have support for them).
</para>
Module: kamailio
Branch: master
Commit: 90ee1c6684495a6050e002d228a434e00274dd1b
URL: https://github.com/kamailio/kamailio/commit/90ee1c6684495a6050e002d228a434e…
Author: Daniel-Constantin Mierla <miconda(a)gmail.com>
Committer: Daniel-Constantin Mierla <miconda(a)gmail.com>
Date: 2025-07-21T12:42:32+02:00
sipdump: docs for parameter wait_mode
---
Modified: src/modules/sipdump/doc/sipdump_admin.xml
---
Diff: https://github.com/kamailio/kamailio/commit/90ee1c6684495a6050e002d228a434e…
Patch: https://github.com/kamailio/kamailio/commit/90ee1c6684495a6050e002d228a434e…
---
diff --git a/src/modules/sipdump/doc/sipdump_admin.xml b/src/modules/sipdump/doc/sipdump_admin.xml
index 3bcdc31fc46..f8627d192b6 100644
--- a/src/modules/sipdump/doc/sipdump_admin.xml
+++ b/src/modules/sipdump/doc/sipdump_admin.xml
@@ -123,7 +123,8 @@ modparam("sipdump", "mode", 3)
<section id="sipdump.p.wait">
<title><varname>wait</varname> (int)</title>
<para>
- Wait time (microseconds) when no SIP traffic is received.
+ Wait time (microseconds) when no SIP traffic is received
+ (for wait_time = 0).
</para>
<para>
<emphasis>
@@ -136,6 +137,29 @@ modparam("sipdump", "mode", 3)
...
modparam("sipdump", "wait", 2000)
...
+</programlisting>
+ </example>
+ </section>
+ <section id="sipdump.p.wait_mode">
+ <title><varname>wait_mode</varname> (int)</title>
+ <para>
+ If set to 1, the module uses a pthread mutex and contion to signal
+ when SIP messages are available to the writer process. It should
+ use less CPU when idle (on no SIP traffic) than the default pooling
+ on timer, but be sure that the OS supports process-shared pthread
+ mutexes and conditions (latest Linux distros have support for them).
+ </para>
+ <para>
+ <emphasis>
+ Default value is 0.
+ </emphasis>
+ </para>
+ <example>
+ <title>Set <varname>wait_mode</varname> parameter</title>
+ <programlisting format="linespecific">
+...
+modparam("sipdump", "wait_mode", 1)
+...
</programlisting>
</example>
</section>
@@ -360,4 +384,3 @@ route[TCLEAN] {
</section>
</chapter>
-