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SIP Trace Plugin

Name

nksip_trace

Description

This plugin allows to trace sent and received SIP messages to console or disk. You can start tracing any specific Service, and for any IP or a specific set of IPs.

See the nksip_trace option bellow.

Dependant Plugins

None

Configuration Values

Service configuration values

Option Default Description
sip_trace - Configures tracing for this Service (see bellow)

You can use the following options for nksip_trace:

  • {sip_trace, console}: Tracing for all IPs will be sent to the console
  • {sip_trace, File::string()}: Tracing will be sent to this file
  • {sip_trace, {console, IpSpec::list()}}: Trace to console, but only for this IPs (see bellow)
  • {sip_trace, {File::string(), IpSpec::list()}}: Trace to file, but only for this IPs (see bellow)

IpSpec can be an IP (like "10.0.0.1"), list of IPs (like ["10.0.0.1", "10.0.0.2"]) or a regular expression or list of regular expressions (like ["10.0.0.1", "^11.*"])

Tracing will be much faster if you don't use IP filtering.

API functions

get_all/0

get_all() ->
    [{App::nksip:srv_name(), File::console|binary(), IpList::all|[binary()]}].

Get all Services currently tracing messages.

start/0

start() -> 
    [{nksip:srv_name(), ok|{error, term()}}].

Equivalent to start(AppId, console, all) for all started Services.

start/1

start(App::nksip:srv_id()|nksip:srv_name()) -> 
    ok | {error, term()}.

Equivalent to start(AppId, console, all) for a started Service.

start/2

start(App::nksip:srv_id()|nksip:srv_name(), File::file()) -> 
    ok | {error, term()}.

Equivalent to start(AppId, File, all) for a started Service.

start/3

start(nksip:srv_id()|nksip:srv_id(), file(), ip_list()) ->
    ok | {error, term()}.

Configures a Service to start tracing SIP messages. Under the hood, it calls nksip:update/2 to modify the Service configuration and include the corresponding nksip_trace option.

stop/0

stop() -> 
    ok.

Stop all tracing processes, closing all open files.

stop/1

stop(App::nksip:srv_id()|nksip:srv_name()) ->
    ok | {error, term()}.

Stop tracing in a specific Service, closing trace file if it is opened.

print/1

print(Msg::nksip:request()|nksip:response()) ->
 ok.

Pretty-print a nksip:request() or nksip:response().

print/2

print(Tag::string()|binary(), Msg::nksip:request()|nksip:response()) ->
    ok.

Pretty-print a nksip:request() or nksip:response() with a Tag.

Examples

nksip_trace:start("my_app", "/tmp/1.trace", ["10.0.0.1", "^11.*"]).

or using the Service configuration file:

nksip:start("my_app", nksip_callbacks, [], [
				{plugins, [nksip_trace]},
				{sip_trace, {"/tmp/1.trace", ["10.0.0.1", "^11.*"]}}]).

removing the trace:

nksip:update("my_app", [{plugins, []}]).