EVENT_ROUTE module

Admin Guide

Overview

This module provides a simple way for handling different events, triggered through the OpenSIPS Event Interface, directly from the OpenSIPS script. For a specific event, a special route (event_route) has to be declared in the script, and should contain the code that handles the event. The route is executed by the module when the corresponding event is raised by the OpenSIPS Event Interface.

ROUTE events parameters

In order to retrieve the parameters of an event, the fetch_event_params(pvar_list) function is used. It receives a single parameter, that consists of a list of parameters names (optional) and the pseudo-variable where the values will be stored. The grammar is: [ param_name= ] pvar [; [ param_name= ] pvar ]*

Example:

fetch_even_params("$avp(first_param)");
fetch_even_params("ip=$avp(pike_ip)");
fetch_even_params("source=$avp(src);destination=$avp(dst)");

If the name of the parameter is not specified, the avp will be populated according to the order of the parameters, as exported by the event. The following code will populate the $avp(first) avp with the first parameter of the event, $avp(second) with the second one and so on.

fetch_event_params(“$avp(first);$avp(second);$avp(third)”);

NOTE: An event may be triggered within a different event, leading to nested processing. This function will retrieve the parameters of the currently processed event.

The event name can contain any non-quoted string character, but it is recommended to follow the syntax: E_MODULE_NAME_EXTRA_NAME

EVENT_ROUTE usage

In order to handle the E_PIKE_BLOCKED event, the following snippet can be used:

EVENT_ROUTE usage

  event_route[E_PIKE_BLOCKED] {
    fetch_event_params("ip=$avp(pike-ip)");
    xlog("IP $avp(pike-ip) has been blocked\n");
  }

EVENT_ROUTE socket syntax

As the OpenSIPS Event Interface requires, the event_route module uses a specific socket syntax: ‘route:’ event_name

Example: route:E_PIKE_BLOCKED

Dependencies

OpenSIPS Modules

The following modules must be loaded before this module:

• No dependencies on other OpenSIPS modules.

External Libraries or Applications

The following libraries or applications must be installed before running OpenSIPS with this module loaded:

• none

Exported Parameters

No parameter exported by this module. This module doesn’t export any parameter

Exported Functions

fetch_event_params(pvar_list)

Retrieves the parameters of the event. For more information, please read event route parameters.

The the pseudo variables list as described in event route parameters.

This function can be used from REQUEST_ROUTE and EVENT_ROUTE.

fetch_event_params usage

...
fetch_even_params("$avp(first_param)"); # fetch the first parameter of an event
fetch_even_params("ip=$avp(pike_ip)");  # fetch the ip parameter
fetch_even_params("source=$avp(src);destination=$avp(dst)"); # fetch the source and destination parameters
...

Frequently Asked Questions

Q: Can I declare more routes for handling the same event?

No, only a single event_route can be used for a particular event.

Q: Where can I find more about OpenSIPS?

Take a look at http://www.opensips.org/.

Q: Where can I post a question about this module?

First at all check if your question was already answered on one of our mailing lists:

E-mails regarding any stable OpenSIPS release should be sent to users@lists.opensips.org and e-mails regarding development versions should be sent to devel@lists.opensips.org.

If you want to keep the mail private, send it to users@lists.opensips.org.

Q: How can I report a bug?

Please follow the guidelines provided at: https://github.com/OpenSIPS/opensips/issues.

Contributors

By Commit Statistics

Top contributors by DevScore⁽¹⁾, authored commits⁽²⁾ and lines added/removed⁽³⁾

#	Name	DevScore	Commits	Lines++	Lines—
1.	Razvan Crainea (@razvancrainea)	16	8	808	14
2.	Stefan Darius (@dariusstefan)	6	3	221	40
3.	Liviu Chircu (@liviuchircu)	3	1	4	4
4.	Bogdan-Andrei Iancu (@bogdan-iancu)	3	1	1	1

(1) DevScore = author_commits + author_lines_added / (project_lines_added / project_commits) + author_lines_deleted / (project_lines_deleted / project_commits)

(2) including any documentation-related commits, excluding merge commits

(3) ignoring whitespace edits, renamed files and auto-generated files

By Commit Activity

#	Name	Commit Activity
1.	Stefan Darius (@dariusstefan)	Jun 2026 - Jul 2026
2.	Razvan Crainea (@razvancrainea)	Dec 2012 - Jun 2026
3.	Bogdan-Andrei Iancu (@bogdan-iancu)	May 2014 - May 2014
4.	Liviu Chircu (@liviuchircu)	Mar 2014 - Mar 2014

(1) including any documentation-related commits, excluding merge commits

Documentation

Contributors

Last edited by: Razvan Crainea (@razvancrainea).

License

All documentation files (i.e. .md extension) are licensed under the Creative Common License 4.0