Opensips::Mi

OpenSIPs management interface library. This library supports following management interfaces OpenSIPs modules:

• mi_datagram
• mi_fifo
• mi_http
• mi_xmlrpc

version 1+ supports only new MI jsonrpc used by opensips v3+. if you need older version with a plain text MI protocol install this library version 0.0.11

Installation

Add this line to your application's Gemfile:

gem 'opensips-mi'

And then execute:

$ bundle

Or install it yourself as:

$ gem install opensips-mi

Connecting management interfaces

Generic function to connect mi

Using generic function to connect management interface:

require 'opensips/mi'
Opensips::MI.connect INTERFACE, PARAMS

Parameters:

INTRFACE - interface name. One of the following:

• :datagram
• :fifo
• :http
• :xmlrpc

PARAMS - connection parameters. Depends on interface. See below.

This function will raise exceptions if there are parameters' or environment errors.

Datagram

require 'opensips/mi'
opensips = Opensips::MI.connect :datagram,
                                :host => "199.188.10.100",
                                :port => 8809,
                                :timeout => 3

Parameters hash:

• host: Hostname or IP address of OpenSIPs server
• port: Datagram port. See mi_datagram module configuration parameter: modparam("mi_datagram", "socket_name", "udp:192.168.2.133:8080")
• timeout: (OPTIONAL) Timeout in seconds to wait send/recv commands. Default 5 seconds.

FIFO

require 'opensips/mi'
opensips = Opensips::MI.connect :fifo, 
                                :fifo_name => '/tmp/opensips_fifo',
                                :reply_dir => '/tmp',
                                :timeout => 3

Parameters hash:

• fifo_name: OpenSIPs fifo file. See mi_fifo module parameter: modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo").
• reply_dir: (OPTIONAL) Path to directory of reply fifo file. This directory is defined by opensips module parameter modparam("mi_fifo", "reply_dir", "/home/opensips/tmp/"). Default is "/tmp"
• timeout: (OPTIONAL) Timeout in seconds read/write file timeout. Default 5 seconds.

HTTP

require 'opensips/mi'
opensips = Opensips::MI.connect :http,
                                :url => "http://192.168.0.1:8000/mi",
                                :timeout => 5

Parameters hash:

• url: HTTP MI url. Check OpenSIPS module mi_http for setting of IP, port and root path.
• timeout: Timeout in seconds to wait send/recv commands. Optional. Default 5 seconds.
• timeout: (OPTIONAL) Timeout in seconds to wait send/recv commands. Default 5 seconds.

XMLRPC

require 'opensips/mi'
opensips = Opensips::MI.connect :xmlrpc,
                                :url => "http://192.168.0.1/rpc",
                                :timeout => 5

Parameters hash:

• url: HTTP MI url. Check OpenSIPS module mi_http for setting of IP, port and root path.
• timeout: (OPTIONAL) Timeout in seconds to wait send/recv commands. Default 5 seconds.

Command function

Function "command" expects fifo command as a first argument, followed by command parameters. Command parameters' description can be found in module documentation. For example:

require 'opensips/mi'
opensips = Opensips::MI.connect :http,
                                :url => 'http://10.0.0.1/mi'

opensips.command('which')
opensips.command('get_statistics', 'dialog','tm')

Command method interface

It is also possible to use command names as a method interface. Parameters can be passed as array or hash too. Library will automatically fit it to defined protocol.

require 'opensips/mi'
opensips = Opensips::MI.connect :datagram,
                                :host => "192.168.122.128",
                                :port => 8809

opensips.which
opensips.get_statistics('dialog','tm')
opensips.uptime
opensips.ul_show_contact('location', 'alice')
opensips.lb_status([1, 0])

# NOTE: named parametters can be used in hash.
# Make sure you are using correct names
opensips.log_level({level: 3, pid: 1})

Response

Command function returns hash with root key :result and hash/array of respons data or root key :error with message or more data.

Example of response of "uptime" command:

{:result=>{
    "Now"=>"Wed Aug  9 19:41:28 2023",
    "Up since"=>"Wed Aug  9 18:44:18 2023",
    "Up time"=>"3430 [sec]"
    }
}

Error response example:

{:error=>{
    "code"=>-32602,
    "message"=>"Invalid params",
    "data"=>"Bad PID"
    }
}

Helper methods

Dialog methods

Dialog methods are interface to t_uac_dlg function of OpenSIPs' tm (transactions) module.

Interface to t_uac_dlg function of transaction (tm) module

Very cool method from OpenSIPs. Can generate and send SIP request method to a destination UAC. Example of usage:

• Send NOTIFY with special Event header to force restart SIP phone (equivalent of Asterisk's "sip notify peer")
• Send PUBLISH to trigger notification which changes device state
• Send REFER to transfer call
• etc., etc., etc.

Headers

Headers parameter "hf" is a hash of headers of format:

header-name => header-value

Example:

hf["From"] => "Alice Liddell <sip:alice@wanderland.com>;tag=843887163"

Special "nl" header with any value is used to input additional "\r\n". This is useful, for example, in message-summary event to separate application body. This is because t_uac_dlg expects body parameter as an xml only.

Thus, using multiple headers with same header-name is not possible. However, it is possible to use multiple header-values comma separated (rfc3261, section 7.3.1):

hf["Route"] => "<sip:alice@atlanta.com>, <sip:bob@biloxi.com>"

Which is equivalent to:

Route: <sip:alice@atlanta.com>
Route: <sip:bob@biloxi.com>

If there are no To and From headers found, then exception ArgumentError is raised. Also when body part is present, Content-Type and Content-length fields are required.

Parameters

• method: SIP request method (NOTIFY, PUBLISH etc)
• ruri: Request URI, ex.: sip:555@10.0.0.55:5060
• hf: Headers array. Additional headers will be added to request. At least "From" and "To" headers must be present. Headers' names are case-insensitive.
• nhop: Next hop SIP URI (OBP); use "." if no value.
• socket: Local socket to be used for sending the request; use "." if no value. Ex.: udp:10.130.8.21:5060
• body: (optional, may not be present) request body (if present, requires the "Content-Type" and "Content-length" headers)

Example of usage

opensips.uac_dlg "NOTIFY", "sip:alice@127.0.0.1:5066",
                  {
                    "From"  => "<sip:alice@wanderland.com>;tag=8755a8d01a12f7e903a6f4ccaf393f04",
                    "To"    => "<sip:alice@wanderland.com>",
                    "Event" => "check-sync"
                  }

NOTIFY check-sync like event

NOTIFY Events to restart phone, force configuration reload or report for some SIP IP phone models. Wrapper to uac_dlg function. The events list was taken from Asterisk configuration file (sip_notify.conf) Note that SIP IP phones usually should be configured to accept special notify event. For example, Polycom configuration option to enable special event would be:

  voIpProt.SIP.specialEvent.checkSync.alwaysReboot="1"

This function will generate To/From/Event headers. Will use random tag for From header.

NOTE: This function will not generate To header tag. This is not complying with SIP protocol specification (rfc3265). NOTIFY must be part of a subscription dialog. However, it works for the most of the SIP IP phone models.

Parameters

• uri: Valid client contact URI (sip:alice@10.0.0.100:5060). To get client URI use ul_show_contact => contact function
• event: One of the events from EVENTNOTIFY constant hash
• hf: Header fields. Add To/From header fields here if you do not want them to be auto-generated. Header field example: hf['To'] => '<sip:alice@wanderland.com>'

Example of usage Will reboot Polycom phone:

opensips.event_notify 'sip:alice@127.0.0.1:5060', :polycom_check_cfg

List of available events' keys:

• :astra_check_cfg
• :aastra_xml
• :digium_check_cfg
• :linksys_cold_restart
• :linksys_warm_restart
• :polycom_check_cfg
• :sipura_check_cfg
• :sipura_get_report
• :snom_check_cfg
• :snom_reboot
• :cisco_check_cfg
• :avaya_check_cfg

Presence MWI

Send message-summary NOTIFY Event to update phone voicemail status.

Parameters

• uri: Request URI (sip:alice@wanderland.com:5060). To get client URI use ul_show_contact function, contact value
• vmaccount:Message Account value. Ex.: sip:*97@asterisk.com
• new: Number of new messages. If more than 0 then Messages-Waiting header will be "yes". Set to 0 to clear phone MWI
• old: (optional) Old messages
• urg_new: (optional) New urgent messages
• urg_old: (optional) Old urgent messages

Example of usage

opensips.mwi_update 'sip:alice@wanderland.com:5060', 'sip:*97@voicemail.pbx.com', 5