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### Description
Hello ,
i would like to have parameter in topos and topoh to disable comma separated values in one single **Via**, **Record-Route** or **Route** header.
some ua we are interacting with dont handle that (even if its rfc compliant).
and so most scenario calls fail with those particular ua.
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Explain what you did, what you expected to happen, and what actually happened.
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### Expected behavior
#### Actual observed behavior
#### Debugging Data
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(paste your debugging data here)
```
#### Log Messages
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#### SIP Traffic
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### Possible Solutions
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### Additional Information
* **Kamailio Version** - output of `kamailio -v`
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* **Operating System**:
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Reply to this email directly or view it on GitHub:
https://github.com/kamailio/kamailio/issues/3216
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Message ID: <kamailio/kamailio/issues/3216(a)github.com>
Module: kamailio
Branch: master
Commit: 5dbee20d7d44bae21f3a225966808576285ef2eb
URL: https://github.com/kamailio/kamailio/commit/5dbee20d7d44bae21f3a22596680857…
Author: Kamailio Dev <kamailio.dev(a)kamailio.org>
Committer: Kamailio Dev <kamailio.dev(a)kamailio.org>
Date: 2022-08-21T15:46:09+02:00
modules: readme files regenerated - topos ... [skip ci]
---
Modified: src/modules/topos/README
---
Diff: https://github.com/kamailio/kamailio/commit/5dbee20d7d44bae21f3a22596680857…
Patch: https://github.com/kamailio/kamailio/commit/5dbee20d7d44bae21f3a22596680857…
---
diff --git a/src/modules/topos/README b/src/modules/topos/README
index 774cc4f347..1f8e8c191d 100644
--- a/src/modules/topos/README
+++ b/src/modules/topos/README
@@ -500,11 +500,11 @@ modparam("topos", "methods_nocontact", "CANCEL,PRACK")
List of headers to disable multiple comma separated values inserted in
compact form. Altough compact form is RFC compliant this paramter gives
- possibilty to disable compact form header values for UA that dont
- support/handle it. The following options are available: (1) - disable
- multiple comma separated values for Via header (2) - disable multiple
- comma separated values for Record-Route header (4) - disable multiple
- comma separated values for Route header
+ possibilty to disable compact form header values for UA that don't
+ support or can't handle it. The following options are available: (1) -
+ disable multiple comma separated values for Via header (2) - disable
+ multiple comma separated values for Record-Route header (4) - disable
+ multiple comma separated values for Route header
Default value is “0”.
Module: kamailio
Branch: master
Commit: 7dd3658e248a6c64b1606ebebac76869a006b911
URL: https://github.com/kamailio/kamailio/commit/7dd3658e248a6c64b1606ebebac7686…
Author: Henning Westerholt <hw(a)gilawa.com>
Committer: Henning Westerholt <hw(a)gilawa.com>
Date: 2022-08-21T13:31:51Z
topos: small doc improvements related to header_mode parameter
---
Modified: src/modules/topos/doc/topos_admin.xml
---
Diff: https://github.com/kamailio/kamailio/commit/7dd3658e248a6c64b1606ebebac7686…
Patch: https://github.com/kamailio/kamailio/commit/7dd3658e248a6c64b1606ebebac7686…
---
diff --git a/src/modules/topos/doc/topos_admin.xml b/src/modules/topos/doc/topos_admin.xml
index c15fcf245e..dcf61a0fed 100644
--- a/src/modules/topos/doc/topos_admin.xml
+++ b/src/modules/topos/doc/topos_admin.xml
@@ -551,11 +551,11 @@ modparam("topos", "methods_nocontact", "CANCEL,PRACK")
<para>
List of headers to disable multiple comma separated values inserted in compact form.
Altough compact form is RFC compliant this paramter gives possibilty to disable
- compact form header values for UA that dont support/handle it.
+ compact form header values for UA that don't support or can't handle it.
The following options are available:
- (1) - disable multiple comma separated values for Via header
+ (1) - disable multiple comma separated values for Via header
(2) - disable multiple comma separated values for Record-Route header
(4) - disable multiple comma separated values for Route header
<!-- Kamailio Pull Request Template -->
Topos module always put a single Via header with multiple comma separated values.
Even if this behaviour is RFC compliant there should a possibilty to disable that behaviour four uas that dont support/handle that.
this pull request adds a new parameter topos module to disable that behaviour if needed otherwise the default topos compact form is used.
```
modparam("topos", "separate_via", 1)
```
<!--
IMPORTANT:
- for detailed contributing guidelines, read:
https://github.com/kamailio/kamailio/blob/master/.github/CONTRIBUTING.md
- pull requests must be done to master branch, unless they are backports
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#### Pre-Submission Checklist
<!-- Go over all points below, and after creating the PR, tick all the checkboxes that apply -->
<!-- All points should be verified, otherwise, read the CONTRIBUTING guidelines from above-->
<!-- If you're unsure about any of these, don't hesitate to ask on sr-dev mailing list -->
- [x] Commit message has the format required by CONTRIBUTING guide
- [x] Commits are split per component (core, individual modules, libs, utils, ...)
- [x] Each component has a single commit (if not, squash them into one commit)
- [x] No commits to README files for modules (changes must be done to docbook files
in `doc/` subfolder, the README file is autogenerated)
#### Type Of Change
- [ ] Small bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds new functionality)
- [ ] Breaking change (fix or feature that would change existing functionality)
#### Checklist:
<!-- Go over all points below, and after creating the PR, tick the checkboxes that apply -->
- [x] PR should be backported to stable branches
- [x] Tested changes locally
- [ ] Related to issue #3216
#### Description
<!-- Describe your changes in detail -->
You can view, comment on, or merge this pull request online at:
https://github.com/kamailio/kamailio/pull/3220
-- Commit Summary --
* topos: enable multiple Via values in separate via header
-- File Changes --
M src/modules/topos/topos_mod.c (2)
M src/modules/topos/tps_msg.c (48)
-- Patch Links --
https://github.com/kamailio/kamailio/pull/3220.patchhttps://github.com/kamailio/kamailio/pull/3220.diff
--
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Message ID: <kamailio/kamailio/pull/3220(a)github.com>
Module: kamailio
Branch: master
Commit: 54fe9d29d15bd15b60950035ad348baacbb868fe
URL: https://github.com/kamailio/kamailio/commit/54fe9d29d15bd15b60950035ad348ba…
Author: Mvondo Eric <106535097+emvondo(a)users.noreply.github.com>
Committer: GitHub <noreply(a)github.com>
Date: 2022-08-21T15:19:51+02:00
topos: disable multiple comma separated values in One Single Via, Record-Route or Route header if needed (#3220)
* topos: enable multiple Via values in separate via header
* topos: disable multiple comma separated values in One Single Via, Record-Route or Route header
* topos: disable multiple comma separated values in One Single Via, Record-Route or Route header
* topos: disable multiple comma separated values in One Single Via, Record-Route or Route header
* change parameter name for disabling compact form values
---
Modified: src/modules/topos/doc/topos_admin.xml
Modified: src/modules/topos/topos_mod.c
Modified: src/modules/topos/tps_msg.c
Modified: src/modules/topos/tps_msg.h
---
Diff: https://github.com/kamailio/kamailio/commit/54fe9d29d15bd15b60950035ad348ba…
Patch: https://github.com/kamailio/kamailio/commit/54fe9d29d15bd15b60950035ad348ba…
#### Pre-Submission Checklist
- [X] Commit message has the format required by CONTRIBUTING guide
- [X] Commits are split per component (core, individual modules, libs, utils, ...)
- [ ] Each component has a single commit (if not, squash them into one commit)
- [X] No commits to README files for modules (changes must be done to docbook files
in `doc/` subfolder, the README file is autogenerated)
#### Type Of Change
- [X] Small bug fix (non-breaking change which fixes an issue)
- [X] New feature (non-breaking change which adds new functionality)
- [ ] Breaking change (fix or feature that would change existing functionality)
#### Checklist:
- [ ] PR should be backported to stable branches (no, it is a requirement to use UDP/IPv6 with everyone)
- [X] Tested changes locally (same results as before with the Kamailio test framework)
- [ ] Related to issue #3119
#### Description
The IPv6 support for Path MTU discovery is absent, but IPv6 has no DF flag to allow downstream fragmentation. See Issue #3119 for my discovery / learning path. In short, unconnected UDP sockets do not learn Path MTU problems, so a message dropped once will be dropped again on resend. Using `IPV6_PMTUDISC_WANT`, any knowledge in the kernel can be used to fragment the message at sending time, as intended for IPv6.
These patches actually correct two IPv6-related things in the `core/udp_server.c`,
1. Benefit from any kernel knowledge about Path MTU for IPv6
2. The same option to learn from UDP_ERRORS is now available for IPv6
Do note that the last has not been implemented for IPv4 or IPv6. It is more useful for IPv6, allowing instant "tm" resends for Path MTU, but not "sl" I think. I cannot do that work, but this brings IPv6 to the same level as IPv4.
```
commit 0f90cff05c1a448eb2f85f83b4c087ab32ede11
Author: Rick van Rein <rick(a)openfortress.nl>
Date: Sat Jun 11 10:57:32 2022 +0000
core: Issue 3119. Handling ICMPv6 Packet too Big
- This was only defined for IPv4 under flag UDP_ERRORS
- IPv6 has no toggle DF to clear for en-route fragmentation
- Kamailio currently does not collect with recvmsg(...,MSG_ERRQUEUE)
- The benefits of adding that can be instant resends for "tm" messages
- Note that "sl" messages will have been forgotten at this point
commit 6b404b5f9807174177bee36eaf3543be0794f55e
Author: Rick van Rein <rick(a)openfortress.nl>
Date: Sat Jun 11 10:44:27 2022 +0000
core: Issue #3119. Path MTU kernel info for IPv6
- For IPv4, DF is an option; for IPv6 it is always active
- This makes pmtu_discover an IPv4-only option
- This means that we should set IPV6_MTU_DISCOVER to IPV6_PMTUDISC_WANT
- Unconnected UDP sockets can now learn from ICMPv6 "Packet too Big"
- As a result, hitting a Path MTU upper bound is a learning process
- This should stop consistent SIP packet drops due to Path MTU
```
You can view, comment on, or merge this pull request online at:
https://github.com/kamailio/kamailio/pull/3141
-- Commit Summary --
* core: Issue #3119. Path MTU kernel info for IPv6
* core: Issue 3119. Handling ICMPv6 Packet too Big
-- File Changes --
M doc/misc/NEWS (2)
M src/core/udp_server.c (44)
-- Patch Links --
https://github.com/kamailio/kamailio/pull/3141.patchhttps://github.com/kamailio/kamailio/pull/3141.diff
--
Reply to this email directly or view it on GitHub:
https://github.com/kamailio/kamailio/pull/3141
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Message ID: <kamailio/kamailio/pull/3141(a)github.com>
Module: kamailio
Branch: master
Commit: a022dbd6b30d8301053950756cd30a2b478433e0
URL: https://github.com/kamailio/kamailio/commit/a022dbd6b30d8301053950756cd30a2…
Author: Henning Westerholt <hw(a)gilawa.com>
Committer: Henning Westerholt <hw(a)gilawa.com>
Date: 2022-08-21T12:38:16Z
core: add pmtu_discovery=2 for IPv4 and IPv6 - set IP_PMTUDISC_WANT/IPV6_PMTUDISC_WANT (GH #3141)
- add pmtu_discovery=2 for IPv4 and IPv6 - set IP_PMTUDISC_WANT/IPV6_PMTUDISC_WANT
- related to GH #3141
- for IPv4: will fragment a datagram if needed according to the path MTU,
or will set the don't-fragment flag otherwise
- for IPv6: will fragment a datagram if needed according to the path MTU for IPv6
---
Modified: src/core/udp_server.c
---
Diff: https://github.com/kamailio/kamailio/commit/a022dbd6b30d8301053950756cd30a2…
Patch: https://github.com/kamailio/kamailio/commit/a022dbd6b30d8301053950756cd30a2…
---
diff --git a/src/core/udp_server.c b/src/core/udp_server.c
index 7c501f0dab..3edf485199 100644
--- a/src/core/udp_server.c
+++ b/src/core/udp_server.c
@@ -349,9 +349,19 @@ int udp_init(struct socket_info* sock_info)
#endif
#if defined (__OS_linux)
if (addr->s.sa_family==AF_INET){
- /* If pmtu_discovery=1 then set DF bit and do Path MTU discovery
- * disabled by default. Specific to IPv4. */
- optval= (pmtu_discovery) ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT;
+ /* If pmtu_discovery=1 then set DF bit and do Path MTU discovery,
+ * disabled by default. Specific to IPv4. If pmtu_discovery=2
+ * then the datagram will be fragmented if needed according to
+ * path MTU, or will set the don't-fragment flag otherwise */
+ switch (pmtu_discovery) {
+ case 1: optval=IP_PMTUDISC_DO;
+ break;
+ case 2: optval=IP_PMTUDISC_WANT;
+ break;
+ case 0:
+ default: optval=IP_PMTUDISC_DONT;
+ break;
+ }
if(setsockopt(sock_info->socket, IPPROTO_IP, IP_MTU_DISCOVER,
(void*)&optval, sizeof(optval)) ==-1){
LM_ERR("IPv4 setsockopt: %s\n", strerror(errno));
@@ -359,9 +369,19 @@ int udp_init(struct socket_info* sock_info)
}
} else if (addr->s.sa_family==AF_INET6){
/* IPv6 never fragments but sends ICMPv6 Packet too Big,
- * If pmtu_discovery=1 then set DF bit and do Path MTU discovery
- * disabled by default. Specific to IPv6. */
- optval= (pmtu_discovery) ? IPV6_PMTUDISC_DO : IPV6_PMTUDISC_DONT;
+ * If pmtu_discovery=1 then set DF bit and do Path MTU discovery,
+ * disabled by default. Specific to IPv6. If pmtu_discovery=2
+ * then the datagram will be fragmented if needed according to
+ * path MTU */
+ switch (pmtu_discovery) {
+ case 1: optval=IPV6_PMTUDISC_DO;
+ break;
+ case 2: optval=IPV6_PMTUDISC_WANT;
+ break;
+ case 0:
+ default: optval=IPV6_PMTUDISC_DONT;
+ break;
+ }
if(setsockopt(sock_info->socket, IPPROTO_IPV6,
IPV6_MTU_DISCOVER,
(void*)&optval, sizeof(optval)) ==-1){