db_url (string)db_table (string)registrar (string)reminder (string)outbound_proxy (string)expire_time (int)check_time (int)send_time (int)clean_period (int)use_contact (int)sc_mid (string)sc_from (string)sc_to (string)sc_uri_user (string)sc_uri_host (string)sc_body (string)sc_ctype (string)sc_exp_time (string)sc_inc_time (string)sc_snd_time (string)snd_time_avp (str)add_date (int)max_messages (int)m_store([owner])m_dump([owner])m_store usagem_dump usageThis modules provides offline message storage for the Open SIP Express Router. It stores received messages for an offline user and sends them when the user becomes online.
For each message, the modules stores "Request-URI" ("R-URI") only if it is a complete address of record ("username@hostname"), URI from "To" header, URI from "From" header, incoming time, expiration time, content type and body of the message. If "R-URI" is not an address of record (it might be the contact address for current SIP session) the URI from "To" header will be used as R-URI.
When the expiration time passed, the message is discarded from database. Expiration time is computed based on incoming time and one of the module's parameters.
Every time when a user registers with OpenSER, the module is looking in database for offline messages intended for that user. All of them will be sent to contact address provided in REGISTER request.
It may happen the SIP user to be registered but his SIP User Agent to have no support for MESSAGE request. In this case it should be used the "failure_route" to store the undelivered requests.
The following modules must be loaded before this module:
database module - mysql, dbtext or other module that implements the "db" interface and provides support for storing/receiving data to/from a database system.
TM--transaction module--is used to send SIP requests.
The following libraries or applications must be installed before running OpenSER with this module:
none.
db_url (string)Database URL.
Default value is "mysql://openser:openserrw@localhost/openser".
registrar (string)The SIP address used to inform users that destination of their message is not online and the message will be delivered next time when that user goes online. If the parameter is not set, the module will not send any notification. All requests intended for this SIP address will not be stored for lately delivery.
Default value is "NULL".
reminder (string)The SIP address used to send reminder messages. If this value is not set, the reminder feature is disabled.
Default value is "NULL".
outbound_proxy (string)The SIP address used as next hop when sending the message. Very useful when using OpenSER with a domain name not in DNS, or when using a separate OpenSER instance for msilo processing. If not set, the message will be sent to the address in destination URI.
Default value is "NULL".
expire_time (int)Expire time of stored messages - seconds. When this time passed, the message is silently discarded from database.
Default value is "259200 (72 hours = 3 days)".
check_time (int)Timer interval to check if dumped messages are sent OK - seconds. The module keeps each request send by itself for a new online user and if the reply is 2xx then the message is deleted from database.
Default value is "30".
send_time (int)Timer interval in seconds to check if there are reminder messages. The module takes all reminder messages that must be sent at that moment or before that moment.
If the value is 0, the reminder feature is disabled.
Default value is "0".
clean_period (int)Number of "check_time" cycles when to check if there are expired messages in database.
Default value is "5".
use_contact (int)Turns on/off the usage of the Contact address to send notification back to sender whose message is stored by MSILO.
Default value is "1 (0 = off, 1 = on)".
sc_mid (string)The name of the column in silo table, storing message id.
Default value is "mid".
sc_from (string)The name of the column in silo table, storing the source address.
Default value is "src_addr".
sc_to (string)The name of the column in silo table, storing the destination address.
Default value is "dst_addr".
sc_uri_user (string)The name of the column in silo table, storing the user name.
Default value is "username".
sc_uri_host (string)The name of the column in silo table, storing the domain.
Default value is "domain".
sc_body (string)The name of the column storing the message body in silo table.
Default value is "body".
sc_ctype (string)The name of the column in silo table, storing content type.
Default value is "ctype".
sc_exp_time (string)The name of the column in silo table, storing the expire time of the message.
Default value is "exp_time".
sc_inc_time (string)The name of the column in silo table, storing the incoming time of the message.
Default value is "inc_time".
sc_snd_time (string)The name of the column in silo table, storing the send time for the reminder.
Default value is "snd_time".
snd_time_avp (str)The name of an AVP which may contain the time when to sent the received message as reminder.The AVP is used ony by m_store().
If the parameter is not set, the module does not look for this AVP. If the value is set to a valid AVP name, then the module expects in the AVP to be a time value in format YYYYMMDDHHMMSS (e.g., 20060101201500).
Default value is "null".
add_date (int)Wheter to add as prefix the date when the message was stored.
Default value is "1" (1==on/0==off).
max_messages (int)Maximum number of stored message for an AoR. Value 0 equals to no limit.
Default value is 0.
m_store([owner])The method stores certain parts of the current SIP request (it should be called when the request type is MESSAGE and the destination user is offline or his UA does not support MESSAGE requests). If the user is registered with a UA which does not support MESSAGE requests you should not use mode="0" if you have changed the request uri with the contact address of user's UA.
Meaning of the parameters is as follows:
owner - is a string that must contain a SIP URI in whose inbox the message will be stored. It can have any pseudo variable. If "owner" is missing, the SIP address is taken from R-URI.
This function can be used from REQUEST_ROUTE, FAILURE_ROUTE.
m_dump([owner])The method sends stored messages for the SIP user that is going to register to his actual contact address. The method should be called when a REGISTER request is received and the "Expire" header has a value greater than zero.
Meaning of the parameters is as follows:
owner - is a string that must contain a SIP URI whose inbox will be dumped. It can have any pseudo variable. If "owner" is missing, the SIP address is taken from To URI.
This function can be used from REQUEST_ROUTE.
Next picture displays a sample usage of msilo.
Example 1-26. OpenSER config script - sample msilo usage
...
# $Id: msilo.cfg 1800 2007-03-10 16:12:47Z bogdan_iancu $
#
# MSILO usage example
#
#
debug=9 # debug level (cmd line: -dddddddddd)
fork=no # don't fork
log_stderror=yes # log to stderr (cmd line: -E)
children=2 # number of children
check_via=no # (cmd. line: -v)
dns=off # (cmd. line: -r)
rev_dns=off # (cmd. line: -R)
port=5060
listen=10.0.0.2 # listen address
# ------------------ module loading ----------------------------------
loadmodule "modules/print/print.so"
loadmodule "modules/textops/textops.so"
loadmodule "modules/sl/sl.so"
loadmodule "modules/mysql/mysql.so"
loadmodule "modules/maxfwd/maxfwd.so"
loadmodule "modules/msilo/msilo.so"
loadmodule "modules/tm/tm.so"
loadmodule "modules/registrar/registrar.so"
loadmodule "modules/usrloc/usrloc.so"
# ----------------- setting module-specific parameters ---------------
# -- registrar params --
modparam("registrar", "default_expires", 120)
# -- registrar params --
modparam("usrloc", "db_mode", 0)
# -- msilo params --
modparam("msilo","db_url","mysql://user:xxx@127.0.0.1/msilo")
modparam("msilo","registrar","sip:registrar@mydomain.com")
# -- tm params --
modparam("tm", "fr_timer", 10 )
modparam("tm", "fr_inv_timer", 15 )
modparam("tm", "wt_timer", 10 )
route{
if ( !mf_process_maxfwd_header("10") )
{
sl_send_reply("483","To Many Hops");
drop();
};
if (uri==myself) {
{
# for testing purposes, simply okay all REGISTERs
if (method=="REGISTER")
{
save("location");
log("REGISTER received -> dumping messages with MSILO\n");
# MSILO - dumping user's offline messages
if (m_dump())
{
log("MSILO: offline messages dumped - if they were\n");
}else{
log("MSILO: no offline messages dumped\n");
};
break;
};
# domestic SIP destinations are handled using our USRLOC DB
if(!lookup("location"))
{
if (! t_newtran())
{
sl_reply_error();
break;
};
# we do not care about anything else but MESSAGEs
if (!method=="MESSAGE")
{
if (!t_reply("404", "Not found"))
{
sl_reply_error();
};
break;
};
log("MESSAGE received -> storing using MSILO\n");
# MSILO - storing as offline message
if (m_store("$ru"))
{
log("MSILO: offline message stored\n");
if (!t_reply("202", "Accepted"))
{
sl_reply_error();
};
}else{
log("MSILO: offline message NOT stored\n");
if (!t_reply("503", "Service Unavailable"))
{
sl_reply_error();
};
};
break;
};
# if the downstream UA does not support MESSAGE requests
# go to failure_route[1]
t_on_failure("1");
t_relay();
break;
};
# forward anything else
t_relay();
}
failure_route[1] {
# forwarding failed -- check if the request was a MESSAGE
if (!method=="MESSAGE")
{
break;
};
log(1,"MSILO:the downstream UA doesn't support MESSAGEs\n");
# we have changed the R-URI with the contact address, ignore it now
if (m_store("$ou"))
{
log("MSILO: offline message stored\n");
t_reply("202", "Accepted");
}else{
log("MSILO: offline message NOT stored\n");
t_reply("503", "Service Unavailable");
};
}
...
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