sr-dev November 2019

sr-dev@lists.kamailio.org

22 participants
380 discussions

[kamailio/kamailio] Solve the high potential of having conflicts for internal dialog id in multiple simultaneous kamailio instances (#1500)
by alexsosic 23 Nov '23

23 Nov '23

Regarding the issue 1274 (https://github.com/kamailio/kamailio/issues/1274) there's a problem in highly scalable environments to avoid conflicts in storing dialogs in the same DB. As @miconda pointed out: > The internal id is made from two integers, hash entry and hash id (h_entry, h_id). h_entry is the index of the slot in the hash table used to store the dialog structure, computed by hashing over call id. h_id is an incremented integer specific for each hash table slot. > > So, when loading a new record from database, if its h_id is not conflicting with an existing dialog on the same hash table slot, all is ok, otherwise the module is not going to work properly with two dialogs having same h_id. > > So, when loading a new record from database, if its h_id is not conflicting with an existing dialog on the same hash table slot, all is ok, otherwise the module is not going to work properly with two dialogs having same h_id. > > Among solutions I thought of: > > 1. have the servers generating non conflicting h_id, by having a start value different per server and an increment step larger than the number of servers. Iirc, here was at some point a similar attempt, but somehow didn't make it. Let's say one has two servers, first server starts allocating h_id from 1 and increments by 2 (e.g: 1, 3, 5, ...) and the seconds start from 2 and increments with 2 (2, 4, 6, ...). Those values can be set via mod params, eventually with an option to rely on server_id. > This should be the least intrusive in the other modules built on top of dialog. But it is rather rigid, with the example above, if one adds an extra server, it needs to reconfigure the old ones, so each server starts from either 1, 2 or 3 and increment by 3. Of course, one can set increment step to a larger value, like 100, and then has flexibility to deploy up to 1 hundred servers before having to reconfigure in case there is need for more server. > > 2. add server_id as the third field in the dialog id. It will require review of other modules using dialog and eventual code updates in those modules. One column to store the server_id needs to be added to dialog db tables. > > 3. switch from this conflicting id system to something like string unique ids, similar to what we have in usrloc records. This will require coding in other modules, changes to database schema, etc., so more work comparing with the above two, but could be the best in long term. It would be great to have the option 3 developed if possible but we would also be satisfied with the option 2 to have a third field, server_id, in the dialog id. Thank You! -- Alex -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/1500

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[kamailio/kamailio] allow more than one tcp/tls connection to same destination (#1107)
by juha-h 23 Nov '23

23 Nov '23

When K connects to another SIP proxy over TCP or TLS, the connection is shared for all requests to that destination. If the receiving SIP proxy is K, it means that only one worker process is handling all those requests. This may become a bottleneck if processing of requests is time consuming, e.g., because of DB operations. It should therefore be possible one way or another to establish more than one parallel TCP or TLS connections to the same destination. One solution could be based on a function call, such as t_forward_connect(number), to be called before t_relay specifying the desired number of parallel connections shared randomly by outgoing requests. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/1107

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[kamailio/kamailio] kazoo: incomplete documentation (#976)
by Ovidiu Sas 23 Nov '23

23 Nov '23

There are lots of module parameters that are not documented in the README file: "amqp_timmer_process_interval" "amqp_consumer_ack_timeout_micro" "amqp_consumer_ack_timeout_sec" "amqp_interprocess_timeout_micro" "amqp_interprocess_timeout_sec" "amqp_waitframe_timeout_micro" "amqp_waitframe_timeout_sec" "amqp_consumer_workers" "amqp_query_timeout_micro" "amqp_query_timeout_sec" "pua_include_entity" "json_escape_char" "app_name" "use_federated_exchange" "federated_exchange" "amqp_heartbeats" "amqp_primary_zone" "amqp_command_hashtable_size" "amqp_result_avp" "amqps_ca_cert" "amqps_cert" "amqps_key" "amqps_verify_peer" "amqps_verify_hostname" Also, the follwing functions are not documented: "kazoo_json_keys" "kazoo_async_query" -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/976

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[kamailio/kamailio] Presentity tabla, faster update when drop TCP/TLS connection (#915)
by jresende 23 Nov '23

23 Nov '23

Hello, I'm testing kamailio with a SIP client with presence support, when I get a connection drop from a client (i.e when the client lost the access to the Internet connection) I do not receive the change in the status to offline immediately, I just received when the timeout from the presentity database finishes. I know that I'm able to change the expiry parameter from the presentity table, but that increases my battery consumption and the data exchange, the same happens if I reduce the publish interval on the client side. The connection with the server are connected with the TLS or TCP. @miconda Suggested that a solution could be: "For TCP/TLS, what can work, it's to use tcpops module which can execute an event route when a tcp/tls connection is dropped. If you track the association of connection id with the call-id of the presence publish, then you may be able to do some tricks and lower the expires of the published presence state. I haven't had the time to see what's possible there, but could worth investing. An alternative would be to enhance presence module to behave as registrar/usrloc (which can delete contact records on connection drop) to expire documents when tcp/tls connection is closed (not sure if anyone already added it)." -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/915

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[kamailio/kamailio] support valgrind when *_MALLOC is used (#949)
by Victor Seva 23 Nov '23

23 Nov '23

As explain at https://www.kamailio.org/wiki/tutorials/troubleshooting/memory#pkg_with_sys… valgrind can be used to check memory leaks if kamailio is compiled without ``*_MALLOC``. I would like to support valgrind even if kamailio is compiled to use its own memory managers. In order to archive this, valgrind has to be informed of how those managers control the memory as described at http://valgrind.org/docs/manual/mc-manual.html#mc-manual.mempools -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/949

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[kamailio/kamailio] dnssec: stop using libdnsval-dev for DNSSEC validation (#851)
by Victor Seva 23 Nov '23

23 Nov '23

From https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=843477 > From: Ondřej Surý <ondrej(a)debian.org> > To: Debian Bug Tracking System <submit(a)bugs.debian.org> > Subject: src:kamailio: stop using libval-dev for DNSSEC validation > > Package: src:kamailio > Version: 4.4.3-2 > Severity: serious > > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA512 > > Dear maintainer, > > please stop using libdnsval-dev for DNSSEC validation. src:dnsval > is very poorly upstream maintained (SVN repository, issue tracker, > mailing list are non-functional) and I am going to schedule it for > removal for stretch. > > In a long term you should migrated to better and maintained library > (preferrably getdns or just libunbound), but now please just drop > it. > > Cheers, > Ondrej > > - -- System Information: > Debian Release: 8.6 > APT prefers stable-updates > APT policy: (500, 'stable-updates'), (500, 'proposed-updates'), (500, 'stable') > Architecture: amd64 (x86_64) > > Kernel: Linux 4.2.0-41-generic (SMP w/24 CPU cores) > Locale: LANG=en_DK.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8) > Shell: /bin/sh linked to /bin/dash > Init: systemd (via /run/systemd/system) > > -----BEGIN PGP SIGNATURE----- So I'm going to remove **dnssec** module from the official Debian package -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/851

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[kamailio/kamailio] track_cseq_updates does not update Rack SIP header in PRACK. (#801)
by scfcplummy 23 Nov '23

23 Nov '23

Hi, When using dialog module and track_cseq_updates when needing to update CSeq for authenticated invites, if early media is present the CSeq in the Rack header is not also incremented. Kamailio version: version: kamailio 4.4.2 (x86_64/linux) 892ad6 flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, 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_BLACKLIST, HAVE_RESOLV_RES ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: 892ad6 compiled on 11:18:36 Sep 28 2016 with gcc 5.4.0 -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/801

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[kamailio/kamailio] sca: implement db_mode only (#781)
by Victor Seva 23 Nov '23

23 Nov '23

Sipwise hat ON: We have more than one server and we need to keep things in db in order to share sca subscription/appearance between servers -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/781

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[kamailio/kamailio] Allow function set_advertised_address to receive variable as parameter (#2137)
by pwakano 17 Nov '23

17 Nov '23

### Description Currently the functions set_advertised_address and set_advertised_port only accept strings as parameters. Trying to use it with variable causes an error. Having the function using a hard coded value is not a good practice and in order to add flexibility to the script in different installations it would be nice to have this function accepting variables. Also, the 'advertise' option on the 'listen' parameter is not always desired because it apply for all messages sent via the socket, and there are situations where different advertised IP for the same interface are necessary. ### Expected behavior set_advertised_address should receive a variable as parameter and use its value to change the SIP headers. ### Actual observed behavior Kamailio won't start if set_advertised_address is used with a variable due to script parse error or it will set the SIP message with the literal string "$var(test)" for example, instead of using the value of $var(test). ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` # kamailio -v version: kamailio 5.2.2 (x86_64/linux) 67f967 flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, 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_BLACKLIST, 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: 67f967 compiled on 11:40:41 Mar 11 2019 with gcc 4.8.5 ``` * **Operating System**:  ``` # uname -a Linux voice-conn-kamailio-1 3.10.0-514.21.2.el7.x86_64 #1 SMP Tue Jun 20 12:24:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux ``` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2137

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[kamailio/kamailio] dialplan: implement Iterative dialplan matching (#764)
by Victor Seva 13 Nov '23

13 Nov '23

>From http://lists.kamailio.org/pipermail/sr-dev/2016-August/036231.html On 24/08/16 10:17, Andreas Granig wrote: > Hi, > > When translating strings with the dialplan module, you sometimes end up > with very complex patterns for sanitizing the target string and > performing some replacements, since for a given dialplan id, processing > stops on the first match within the dialplan entries for a given dpid. > > The idea is to introduce a "continue" flag (default 0) in the dialplan > table indicating to proceed with processing further dialplan entries > within the given dpid after a match. The use case is to have a sanitize > rule with highest priority which e.g. removes any spaces, dashes and > parentheses from the target string, then with a lower priority do > further processing with the cleaned up string, e.g. stripping leading > double-zeroes or a plus when normalizing to E164 numbers, or replacing a > single leading zero with the country code and so on. > > This is particularly useful when a user dials a number from an address > book of some sort (e.g. on a mobile app) where number formats are stored > with country-specific formating characters like "+1-(234)-567 890", and > catching all of that in one rule results in really messy match/replace > patterns. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/764

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sr-dev November 2019