sr-users January 2006

sr-users@lists.kamailio.org

134 participants
259 discussions

FW: [Serusers] ser live database and mysql
by Richard C. Thompson 24 Jan '06

24 Jan '06

Frank Thanks for the reply I thought that setting "modparam("usrloc", "db_mode", 2)" to 1 did the same thing. ie it updates the table whenever anything changes. I had it set to 1 but the "location" sql database swelled to over 9000 and ser wouldn't restart until I truncated the table. My concern is that ser can't delete records in sql even though I checked the grants and privileges for user ser and they seem to be ok. Also serctl alias rm doesn't remove the aliases record from the table, again an issue with grants. But serctl alias add works. | Grants for ser@localhost | +--------------------------------------------------------------------------- --------+ | GRANT USAGE ON *.* TO 'ser'@'localhost' IDENTIFIED BY PASSWORD '*******************************' | | GRANT ALL PRIVILEGES ON `ser`.* TO 'ser'@'localhost' | +--------------------------------------------------------------------------- --------+ Got any ideas? Rick _____ From: Frank Fischer [mailto:frank.fischer@digitalnomads.ch] Sent: Tuesday, January 24, 2006 3:25 AM To: RThompson(a)vir2com.com Subject: RE: [Serusers] ser live database and mysql ser keeps the location table in memory for performance reasons and does synchronisation with the backend database sometimes. As far as i understand, this could lead to differences between in-memory data and in database-data. To avoid this situation and force SER to write all data to the database, you could use the experimental module "usrloc-cl". It works fine for me. - Frank _____ From: serusers-bounces(a)iptel.org [mailto:serusers-bounces@lists.iptel.org] On Behalf Of Richard C. Thompson Sent: Monday, January 23, 2006 9:55 PM To: serusers(a)lists.iptel.org Subject: [Serusers] ser live database and mysql Hi all Hopefully someone can answer this. I am running ser with mysql and I have noticed that serctl moni shows a smaller number in "location" than the mysql "location" table. Eg serctl moni shows 404 in location mysql shows 556 in location I have modparam("usrloc", "db_mode", 2) even when I refresh the sql query many times over a long time, the tables never match. It seems that ser can't delete some of the entries Any help or hints would be appreciated Rick

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[Users] trusting gateways through radius
by Jayesh Nambiar 24 Jan '06

24 Jan '06

Hi all, I have configured openser(1.0.0) to authenticate and account via freeradius. It is working properly and fine. But one problem that I am facing is trusting the gateways. I dont want to authenticate the gateways but trust them through their IP address. Is there a way I can do it in freeradius? If avp_radius can be used, pls explain where do i store the IPs that I trust in freeradius. If anyone can help in this regard it would be appreciated. Thanks a lot in advance. Jayesh. Send instant messages to your online friends http://in.messenger.yahoo.com

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[Users] SER as loadbalancer and NAT
by Andreas Granig 24 Jan '06

24 Jan '06

Hi, A question to the NAT experts: I wonder if there are known side effects if I use fix_nated_contact() in combination with nat_flag in the registrar module instead of fix_nated_register() to save NATed contacts? What I want to do is checking for NAT on a stateless SER acting as load balancer, then forwarding it to a proxy in the LAN, like: # remove P-Nated-HF here if present... if(method == REGISTER && !search("^Contact:[ ]*\*") && client_nat_test("7")) { fix_nated_contact(); append_hf("P-Nated: 1\r\n"); force_rport(); } # forwarding to proxy using dispatcher module And in the proxy: modparam("registrar", "nat_flag", 1) # ... if(method == REGISTER) { if(is_present_hf("P-Nated")) setflag(1); save("location"); } # ... if(method == INVITE) { # a request for a local user... lookup("location"); setdsturi("sip:<address of loadbalancer>"); t_relay(); } Of course a mechanism has to be provided to let the loadbalancer or an external application NAT-ping the address provided in the rewritten contact. As far as I have seen, the difference is that this approach would save the NAT-adress of the contact in usrloc with an empty received-param, while fix_nated_register() saves the private adress of the contact with the NAT-adress in the received-param. I would assume (not verified yet), that in the case of using fix_nated_contact(), the NAT-address is set as r-uri after a lookup, with an empty dst-uri, which will have to be set to the load balancer's address to traverse the client-side NAT. In case of using fix_nated_register(), I assume the r-uri is set to the client's private address, and the received-address as dst-uri. Traversing the client's NAT wouldn't be that easy in this case because you would have to save the received-address somewhere in the message and forward the request to the load-balancer, which in turn has to forward it to the client's NAT address. So would this approach using fix_nated_contact() for REGISTERs make sense for using a SER-based load balancer? Or are there any limitations I haven't considered? Thanks, Andy

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[Users] cancel method problem
by unplug 24 Jan '06

24 Jan '06

When UA1 makes a call to UA2, both ringing. Then UA1 cancels the call, a strange log message (from ngrep) will be got below. After that UA2 will ring 3 times itself. You can see in line 718, there is a cancel method. After that, there are many Record-Route, Via in the sip CANCEL method (line 763, line 1578 and many). Does anyone know what the problem is? http://meerkat.no-ip.com/openser/cancel.log

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[Serusers] Help require to install SER in RH9
by Dinesh TJ 24 Jan '06

24 Jan '06

Hello All, Am a newbee to SER and interested to know how it works. I am tryin to install SER in RH9 box and facing some issues. If somebody can send the detailed step by step procedure on how to install then it will be really helpful for me. I am facing problem in Mysql part, first of all am not familiar with Mysql moreover i need to connect mysql with SER which is quite difficult for me. Please help me on this regard Regards Dinesh

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[Serusers] ser live database and mysql
by Richard C. Thompson 23 Jan '06

23 Jan '06

Hi all Hopefully someone can answer this. I am running ser with mysql and I have noticed that serctl moni shows a smaller number in "location" than the mysql "location" table. Eg serctl moni shows 404 in location mysql shows 556 in location I have modparam("usrloc", "db_mode", 2) even when I refresh the sql query many times over a long time, the tables never match. It seems that ser can't delete some of the entries Any help or hints would be appreciated Rick

1 0

[Users] Call-specific AVP DBS storage for OpenSER
by Joachim Fabini 23 Jan '06

23 Jan '06

Hi all, Unfortunately the previous thread on this topic ended without a definitive statement or conclusion, probably because of the New Year holiday (btw, Happy New Year to all of you!). So here's another try: OpenSER is currently session stateful but not call stateful. This is valid also/especially for the AVP module: You can store AVPs on a per-contact base but (imho) _not_ specific to a call or dialog. The reason for this is that the AVP module does not allow/ implement the use of call-dependent variables as AVP names. Adding this feature to OpenSER doesn't require a change in interfaces (implementation effort is another topic ;). It's just about enabling the use of AVP or header values (like, e.g. call-id) as the _name_ of another AVP for DBS storage. I attach a specific example below. Can some of the developers and/or maintainers please comment and/or give some hints on the feasibility of this approach? Is it possible to add this feature to OpenSER? What effort is required to add this enhancement to the AVP module? Please come back if some details are unclear, I might have missed something important. Many thanks in advance for your reply and help, Best regards --Joachim PS: Example: The task is to process any SIP message that passes through our proxy. We must compute a unique ID specific to the call on the first message belonging to this call and store it in DBS. Whenever another message that is part of this call/dialog arrives, we retrieve the unique ID from the DBS and, e.g., append it as a specific header field value. The only way how this can be done is to use some call- specific AVP name (e.g. call-id), as we do not have any influence on the structure of the AVP value (so regexp- search based on AVP value does not help). # This is the AVP name that is required to retrieve # our specific, call-dependent AVP value from the # database whenever a message that belongs to this # call passes our OpenSER proxy. avp_printf("s:myTmpHeaderName", "$from/username$hdr(call-id)"); # This is the value we'd like to store. Could be also # only "$Ts", i.e., we can _not_ rely on regular # expression search for later retrieving the AVP # from the DBS based on its value. avp_printf("s:myTmpHeaderValue", "$hdr(call-id)-$Ts"); # This storing of the call-dependent info in DBS does # currently not work. OpenSER complains at start-up # about the variable AVP name/key on both of the # following lines. The former variant seems much more # flexible to me than the latter one. avp_db_store("s:myTmpHeaderName","s:myTmpHeaderValue"); avp_db_store("$hdr(call-id)","s:myTmpHeaderValue"); # This load obviously does also not work. avp_db_load("$hdr(call-id)","s:myTmpHeaderValue");

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[Serusers] Rtpproxy again
by Olivier Taylor 23 Jan '06

23 Jan '06

Another strange thing. When I call one of our users, it rings ok, but if I hangup and retry the same number, Ser seems not finding that user, if the user reset his phone, no problems, it rings again... Olivier

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[Serusers] Push a specific entry in /etc/hosts
by Walter Luis 23 Jan '06

23 Jan '06

Hi, Friends, Is there a way (line in the server.conf) to push a especif entry in /etc/hosts to openvpn clients? I mean, something like: "command" domain.com 20.x.x.x Then, from the start to the finish of the openvpn, the client always knows that domain.com is 200.X.X.X and won't consult the dns. []'s -- Walter Luis

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[Serusers] rtpproxy
by Olivier Taylor 23 Jan '06

23 Jan '06

Hi all, I have a ser(0.9.4/Freebsd) server well working, but in some cases, I have a strang behavior. I use rtpproxy for nat traversal,all my users can call pstn, but when we try to call one of our users from internal or from pstn, Ser sends many invites and callee never answer to these invite. I must conclude that they don't receive it... All the users having that problems are under a nated network. Any idea ? Olivier

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sr-users January 2006