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| module.exports = UA;
var C = {
// UA status codes
STATUS_INIT : 0,
STATUS_READY: 1,
STATUS_USER_CLOSED: 2,
STATUS_NOT_READY: 3,
// UA error codes
CONFIGURATION_ERROR: 1,
NETWORK_ERROR: 2
};
/**
* Expose C object.
*/
UA.C = C;
/**
* Dependencies.
*/
var util = require('util');
var events = require('events');
var debug = require('debug')('JsSIP:UA');
var debugerror = require('debug')('JsSIP:ERROR:UA');
debugerror.log = console.warn.bind(console);
var JsSIP_C = require('./Constants');
var Registrator = require('./Registrator');
var RTCSession = require('./RTCSession');
var Message = require('./Message');
var Transactions = require('./Transactions');
var Transport = require('./Transport');
var Socket = require('./Socket');
var Utils = require('./Utils');
var Exceptions = require('./Exceptions');
var URI = require('./URI');
var Grammar = require('./Grammar');
var Parser = require('./Parser');
var SIPMessage = require('./SIPMessage');
var sanityCheck = require('./sanityCheck');
/**
* The User-Agent class.
* @class JsSIP.UA
* @param {Object} configuration Configuration parameters.
* @throws {JsSIP.Exceptions.ConfigurationError} If a configuration parameter is invalid.
* @throws {TypeError} If no configuration is given.
*/
function UA(configuration) {
debug('new() [configuration:%o]', configuration);
this.cache = {
credentials: {}
};
this.configuration = {};
this.dynConfiguration = {};
this.dialogs = {};
//User actions outside any session/dialog (MESSAGE)
this.applicants = {};
this.sessions = {};
this.transport = null;
this.contact = null;
this.status = C.STATUS_INIT;
this.error = null;
this.transactions = {
nist: {},
nict: {},
ist: {},
ict: {}
};
// Custom UA empty object for high level use
this.data = {};
this.closeTimer = null;
Object.defineProperties(this, {
transactionsCount: {
get: function() {
var type,
transactions = ['nist','nict','ist','ict'],
count = 0;
for (type in transactions) {
count += Object.keys(this.transactions[transactions[type]]).length;
}
return count;
}
},
nictTransactionsCount: {
get: function() {
return Object.keys(this.transactions.nict).length;
}
},
nistTransactionsCount: {
get: function() {
return Object.keys(this.transactions.nist).length;
}
},
ictTransactionsCount: {
get: function() {
return Object.keys(this.transactions.ict).length;
}
},
istTransactionsCount: {
get: function() {
return Object.keys(this.transactions.ist).length;
}
}
});
/**
* Load configuration
*/
if(configuration === undefined) {
throw new TypeError('Not enough arguments');
}
try {
this.loadConfig(configuration);
} catch(e) {
this.status = C.STATUS_NOT_READY;
this.error = C.CONFIGURATION_ERROR;
throw e;
}
// Initialize registrator
this._registrator = new Registrator(this);
events.EventEmitter.call(this);
}
util.inherits(UA, events.EventEmitter);
//=================
// High Level API
//=================
/**
* Connect to the server if status = STATUS_INIT.
* Resume UA after being closed.
*/
UA.prototype.start = function() {
debug('start()');
if (this.status === C.STATUS_INIT) {
this.transport.connect();
} else if(this.status === C.STATUS_USER_CLOSED) {
debug('restarting UA');
// disconnect
if (this.closeTimer !== null) {
clearTimeout(this.closeTimer);
this.closeTimer = null;
this.transport.disconnect();
}
// reconnect
this.status = C.STATUS_INIT;
this.transport.connect();
} else if (this.status === C.STATUS_READY) {
debug('UA is in READY status, not restarted');
} else {
debug('ERROR: connection is down, Auto-Recovery system is trying to reconnect');
}
// Set dynamic configuration.
this.dynConfiguration.register = this.configuration.register;
};
/**
* Register.
*/
UA.prototype.register = function() {
debug('register()');
this.dynConfiguration.register = true;
this._registrator.register();
};
/**
* Unregister.
*/
UA.prototype.unregister = function(options) {
debug('unregister()');
this.dynConfiguration.register = false;
this._registrator.unregister(options);
};
/**
* Get the Registrator instance.
*/
UA.prototype.registrator = function() {
return this._registrator;
};
/**
* Registration state.
*/
UA.prototype.isRegistered = function() {
if(this._registrator.registered) {
return true;
} else {
return false;
}
};
/**
* Connection state.
*/
UA.prototype.isConnected = function() {
return this.transport.isConnected();
};
/**
* Make an outgoing call.
*
* -param {String} target
* -param {Object} views
* -param {Object} [options]
*
* -throws {TypeError}
*
*/
UA.prototype.call = function(target, options) {
debug('call()');
var session;
session = new RTCSession(this);
session.connect(target, options);
return session;
};
/**
* Send a message.
*
* -param {String} target
* -param {String} body
* -param {Object} [options]
*
* -throws {TypeError}
*
*/
UA.prototype.sendMessage = function(target, body, options) {
debug('sendMessage()');
var message;
message = new Message(this);
message.send(target, body, options);
return message;
};
/**
* Terminate ongoing sessions.
*/
UA.prototype.terminateSessions = function(options) {
debug('terminateSessions()');
for(var idx in this.sessions) {
if (!this.sessions[idx].isEnded()) {
this.sessions[idx].terminate(options);
}
}
};
/**
* Gracefully close.
*
*/
UA.prototype.stop = function() {
debug('stop()');
var session;
var applicant;
var num_sessions;
var ua = this;
// Remove dynamic settings.
this.dynConfiguration = {};
if(this.status === C.STATUS_USER_CLOSED) {
debug('UA already closed');
return;
}
// Close registrator
this._registrator.close();
// If there are session wait a bit so CANCEL/BYE can be sent and their responses received.
num_sessions = Object.keys(this.sessions).length;
// Run _terminate_ on every Session
for(session in this.sessions) {
debug('closing session ' + session);
try { this.sessions[session].terminate(); } catch(error) {}
}
// Run _close_ on every applicant
for(applicant in this.applicants) {
try { this.applicants[applicant].close(); } catch(error) {}
}
this.status = C.STATUS_USER_CLOSED;
if (this.nistTransactionsCount === 0 &&
this.nictTransactionsCount === 0 &&
this.ictTransactionsCount === 0 &&
this.istTransactionsCount === 0 &&
num_sessions === 0) {
ua.transport.disconnect();
}
else {
this.closeTimer = setTimeout(function() {
ua.closeTimer = null;
ua.transport.disconnect();
}, 2000);
}
};
/**
* Normalice a string into a valid SIP request URI
* -param {String} target
* -returns {JsSIP.URI|undefined}
*/
UA.prototype.normalizeTarget = function(target) {
return Utils.normalizeTarget(target, this.configuration.hostport_params);
};
/**
* Allow retrieving configuration and autogenerated fields in runtime.
*/
UA.prototype.get = function(parameter) {
switch(parameter) {
case 'realm':
return this.configuration.realm;
case 'ha1':
return this.configuration.ha1;
default:
debugerror('get() | cannot get "%s" parameter in runtime', parameter);
return undefined;
}
return true;
};
/**
* Allow configuration changes in runtime.
* Returns true if the parameter could be set.
*/
UA.prototype.set = function(parameter, value) {
switch(parameter) {
case 'password': {
this.configuration.password = String(value);
break;
}
case 'realm': {
this.configuration.realm = String(value);
break;
}
case 'ha1': {
this.configuration.ha1 = String(value);
// Delete the plain SIP password.
this.configuration.password = null;
break;
}
case 'display_name': {
if (Grammar.parse('"' + value + '"', 'display_name') === -1) {
debugerror('set() | wrong "display_name"');
return false;
}
this.configuration.display_name = value;
break;
}
default:
debugerror('set() | cannot set "%s" parameter in runtime', parameter);
return false;
}
return true;
};
//===============================
// Private (For internal use)
//===============================
// UA.prototype.saveCredentials = function(credentials) {
// this.cache.credentials[credentials.realm] = this.cache.credentials[credentials.realm] || {};
// this.cache.credentials[credentials.realm][credentials.uri] = credentials;
// };
// UA.prototype.getCredentials = function(request) {
// var realm, credentials;
// realm = request.ruri.host;
// if (this.cache.credentials[realm] && this.cache.credentials[realm][request.ruri]) {
// credentials = this.cache.credentials[realm][request.ruri];
// credentials.method = request.method;
// }
// return credentials;
// };
//==========================
// Event Handlers
//==========================
/**
* new Transaction
*/
UA.prototype.newTransaction = function(transaction) {
this.transactions[transaction.type][transaction.id] = transaction;
this.emit('newTransaction', {
transaction: transaction
});
};
/**
* Transaction destroyed.
*/
UA.prototype.destroyTransaction = function(transaction) {
delete this.transactions[transaction.type][transaction.id];
this.emit('transactionDestroyed', {
transaction: transaction
});
};
/**
* new Message
*/
UA.prototype.newMessage = function(data) {
this.emit('newMessage', data);
};
/**
* new RTCSession
*/
UA.prototype.newRTCSession = function(data) {
this.emit('newRTCSession', data);
};
/**
* Registered
*/
UA.prototype.registered = function(data) {
this.emit('registered', data);
};
/**
* Unregistered
*/
UA.prototype.unregistered = function(data) {
this.emit('unregistered', data);
};
/**
* Registration Failed
*/
UA.prototype.registrationFailed = function(data) {
this.emit('registrationFailed', data);
};
//=========================
// receiveRequest
//=========================
/**
* Request reception
*/
UA.prototype.receiveRequest = function(request) {
var dialog, session, message, replaces,
method = request.method;
// Check that request URI points to us
if(request.ruri.user !== this.configuration.uri.user && request.ruri.user !== this.contact.uri.user) {
debug('Request-URI does not point to us');
if (request.method !== JsSIP_C.ACK) {
request.reply_sl(404);
}
return;
}
// Check request URI scheme
if(request.ruri.scheme === JsSIP_C.SIPS) {
request.reply_sl(416);
return;
}
// Check transaction
if(Transactions.checkTransaction(this, request)) {
return;
}
// Create the server transaction
if(method === JsSIP_C.INVITE) {
new Transactions.InviteServerTransaction(request, this);
} else if(method !== JsSIP_C.ACK && method !== JsSIP_C.CANCEL) {
new Transactions.NonInviteServerTransaction(request, this);
}
/* RFC3261 12.2.2
* Requests that do not change in any way the state of a dialog may be
* received within a dialog (for example, an OPTIONS request).
* They are processed as if they had been received outside the dialog.
*/
if(method === JsSIP_C.OPTIONS) {
request.reply(200);
} else if (method === JsSIP_C.MESSAGE) {
if (this.listeners('newMessage').length === 0) {
request.reply(405);
return;
}
message = new Message(this);
message.init_incoming(request);
} else if (method === JsSIP_C.INVITE) {
// Initial INVITE
if(!request.to_tag && this.listeners('newRTCSession').length === 0) {
request.reply(405);
return;
}
}
// Initial Request
if(!request.to_tag) {
switch(method) {
case JsSIP_C.INVITE:
if (window.RTCPeerConnection) { // TODO
if (request.hasHeader('replaces')) {
replaces = request.replaces;
dialog = this.findDialog(replaces.call_id, replaces.from_tag, replaces.to_tag);
if (dialog) {
session = dialog.owner;
if (!session.isEnded()) {
session.receiveRequest(request);
} else {
request.reply(603);
}
} else {
request.reply(481);
}
} else {
session = new RTCSession(this);
session.init_incoming(request);
}
} else {
debugerror('INVITE received but WebRTC is not supported');
request.reply(488);
}
break;
case JsSIP_C.BYE:
// Out of dialog BYE received
request.reply(481);
break;
case JsSIP_C.CANCEL:
session = this.findSession(request);
if (session) {
session.receiveRequest(request);
} else {
debug('received CANCEL request for a non existent session');
}
break;
case JsSIP_C.ACK:
/* Absorb it.
* ACK request without a corresponding Invite Transaction
* and without To tag.
*/
break;
default:
request.reply(405);
break;
}
}
// In-dialog request
else {
dialog = this.findDialog(request.call_id, request.from_tag, request.to_tag);
if(dialog) {
dialog.receiveRequest(request);
} else if (method === JsSIP_C.NOTIFY) {
session = this.findSession(request);
if(session) {
session.receiveRequest(request);
} else {
debug('received NOTIFY request for a non existent subscription');
request.reply(481, 'Subscription does not exist');
}
}
/* RFC3261 12.2.2
* Request with to tag, but no matching dialog found.
* Exception: ACK for an Invite request for which a dialog has not
* been created.
*/
else {
if(method !== JsSIP_C.ACK) {
request.reply(481);
}
}
}
};
//=================
// Utils
//=================
/**
* Get the session to which the request belongs to, if any.
*/
UA.prototype.findSession = function(request) {
var
sessionIDa = request.call_id + request.from_tag,
sessionA = this.sessions[sessionIDa],
sessionIDb = request.call_id + request.to_tag,
sessionB = this.sessions[sessionIDb];
if(sessionA) {
return sessionA;
} else if(sessionB) {
return sessionB;
} else {
return null;
}
};
/**
* Get the dialog to which the request belongs to, if any.
*/
UA.prototype.findDialog = function(call_id, from_tag, to_tag) {
var
id = call_id + from_tag + to_tag,
dialog = this.dialogs[id];
if(dialog) {
return dialog;
} else {
id = call_id + to_tag + from_tag;
dialog = this.dialogs[id];
if(dialog) {
return dialog;
} else {
return null;
}
}
};
UA.prototype.loadConfig = function(configuration) {
// Settings and default values
var parameter, value, checked_value, hostport_params, registrar_server,
settings = {
/* Host address
* Value to be set in Via sent_by and host part of Contact FQDN
*/
via_host: Utils.createRandomToken(12) + '.invalid',
// SIP Contact URI
contact_uri: null,
// SIP authentication password
password: null,
// SIP authentication realm
realm: null,
// SIP authentication HA1 hash
ha1: null,
// Registration parameters
register_expires: 600,
register: true,
registrar_server: null,
use_preloaded_route: false,
// Session parameters
no_answer_timeout: 60,
session_timers: true,
};
// Pre-Configuration
// Check Mandatory parameters
for(parameter in UA.configuration_check.mandatory) {
if(!configuration.hasOwnProperty(parameter)) {
throw new Exceptions.ConfigurationError(parameter);
} else {
value = configuration[parameter];
checked_value = UA.configuration_check.mandatory[parameter].call(this, value);
if (checked_value !== undefined) {
settings[parameter] = checked_value;
} else {
throw new Exceptions.ConfigurationError(parameter, value);
}
}
}
// Check Optional parameters
for(parameter in UA.configuration_check.optional) {
if(configuration.hasOwnProperty(parameter)) {
value = configuration[parameter];
/* If the parameter value is null, empty string, undefined, empty array
* or it's a number with NaN value, then apply its default value.
*/
if (Utils.isEmpty(value)) {
continue;
}
checked_value = UA.configuration_check.optional[parameter].call(this, value, configuration);
if (checked_value !== undefined) {
settings[parameter] = checked_value;
} else {
throw new Exceptions.ConfigurationError(parameter, value);
}
}
}
// Post Configuration Process
// Allow passing 0 number as display_name.
if (settings.display_name === 0) {
settings.display_name = '0';
}
// Instance-id for GRUU.
if (!settings.instance_id) {
settings.instance_id = Utils.newUUID();
}
// jssip_id instance parameter. Static random tag of length 5.
settings.jssip_id = Utils.createRandomToken(5);
// String containing settings.uri without scheme and user.
hostport_params = settings.uri.clone();
hostport_params.user = null;
settings.hostport_params = hostport_params.toString().replace(/^sip:/i, '');
// Transport
var sockets = [];
if (settings.sockets && Array.isArray(settings.sockets)) {
sockets = sockets.concat(settings.sockets);
}
if (sockets.length === 0) {
throw new Exceptions.ConfigurationError('sockets');
}
try {
this.transport = new Transport(sockets, { /* recovery options */
max_interval: settings.connection_recovery_max_interval,
min_interval: settings.connection_recovery_min_interval
});
// Transport event callbacks
this.transport.onconnecting = onTransportConnecting.bind(this);
this.transport.onconnect = onTransportConnect.bind(this);
this.transport.ondisconnect = onTransportDisconnect.bind(this);
this.transport.ondata = onTransportData.bind(this);
// transport options not needed here anymore
delete settings.connection_recovery_max_interval;
delete settings.connection_recovery_min_interval;
delete settings.sockets;
} catch (e) {
debugerror(e);
throw new Exceptions.ConfigurationError('sockets', sockets);
}
// Check whether authorization_user is explicitly defined.
// Take 'settings.uri.user' value if not.
if (!settings.authorization_user) {
settings.authorization_user = settings.uri.user;
}
// If no 'registrar_server' is set use the 'uri' value without user portion and
// without URI params/headers.
if (!settings.registrar_server) {
registrar_server = settings.uri.clone();
registrar_server.user = null;
registrar_server.clearParams();
registrar_server.clearHeaders();
settings.registrar_server = registrar_server;
}
// User no_answer_timeout.
settings.no_answer_timeout = settings.no_answer_timeout * 1000;
// Via Host
if (settings.contact_uri) {
settings.via_host = settings.contact_uri.host;
}
// Contact URI
else {
settings.contact_uri = new URI('sip', Utils.createRandomToken(8), settings.via_host, null, {transport: 'ws'});
}
this.contact = {
pub_gruu: null,
temp_gruu: null,
uri: settings.contact_uri,
toString: function(options) {
options = options || {};
var
anonymous = options.anonymous || null,
outbound = options.outbound || null,
contact = '<';
if (anonymous) {
contact += this.temp_gruu || 'sip:anonymous@anonymous.invalid;transport=ws';
} else {
contact += this.pub_gruu || this.uri.toString();
}
if (outbound && (anonymous ? !this.temp_gruu : !this.pub_gruu)) {
contact += ';ob';
}
contact += '>';
return contact;
}
};
// Fill the value of the configuration_skeleton
for(parameter in settings) {
UA.configuration_skeleton[parameter].value = settings[parameter];
}
Object.defineProperties(this.configuration, UA.configuration_skeleton);
// Clean UA.configuration_skeleton
for(parameter in settings) {
UA.configuration_skeleton[parameter].value = '';
}
debug('configuration parameters after validation:');
for(parameter in settings) {
switch(parameter) {
case 'uri':
case 'registrar_server':
debug('- ' + parameter + ': ' + settings[parameter]);
break;
case 'password':
case 'ha1':
debug('- ' + parameter + ': ' + 'NOT SHOWN');
break;
default:
debug('- ' + parameter + ': ' + JSON.stringify(settings[parameter]));
}
}
return;
};
/**
* Configuration Object skeleton.
*/
UA.configuration_skeleton = (function() {
var
idx, parameter, writable,
skeleton = {},
parameters = [
// Internal parameters
'jssip_id',
'hostport_params',
// Mandatory user configurable parameters
'uri',
// Optional user configurable parameters
'authorization_user',
'contact_uri',
'display_name',
'instance_id',
'no_answer_timeout', // 30 seconds
'session_timers', // true
'password',
'realm',
'ha1',
'register_expires', // 600 seconds
'registrar_server',
'sockets',
'use_preloaded_route',
// Post-configuration generated parameters
'via_core_value',
'via_host'
];
var writable_parameters = [
'password', 'realm', 'ha1', 'display_name'
];
for(idx in parameters) {
parameter = parameters[idx];
if (writable_parameters.indexOf(parameter) !== -1) {
writable = true;
} else {
writable = false;
}
skeleton[parameter] = {
value: '',
writable: writable,
configurable: false
};
}
skeleton.register = {
value: '',
writable: true,
configurable: false
};
return skeleton;
}());
/**
* Configuration checker.
*/
UA.configuration_check = {
mandatory: {
uri: function(uri) {
var parsed;
if (!/^sip:/i.test(uri)) {
uri = JsSIP_C.SIP + ':' + uri;
}
parsed = URI.parse(uri);
if(!parsed) {
return;
} else if(!parsed.user) {
return;
} else {
return parsed;
}
}
},
optional: {
authorization_user: function(authorization_user) {
if(Grammar.parse('"'+ authorization_user +'"', 'quoted_string') === -1) {
return;
} else {
return authorization_user;
}
},
connection_recovery_max_interval: function(connection_recovery_max_interval) {
var value;
if(Utils.isDecimal(connection_recovery_max_interval)) {
value = Number(connection_recovery_max_interval);
if(value > 0) {
return value;
}
}
},
connection_recovery_min_interval: function(connection_recovery_min_interval) {
var value;
if(Utils.isDecimal(connection_recovery_min_interval)) {
value = Number(connection_recovery_min_interval);
if(value > 0) {
return value;
}
}
},
contact_uri: function(contact_uri) {
if (typeof contact_uri === 'string') {
var uri = Grammar.parse(contact_uri,'SIP_URI');
if (uri !== -1) {
return uri;
}
}
},
display_name: function(display_name) {
if (Grammar.parse('"' + display_name + '"', 'display_name') === -1) {
return;
} else {
return display_name;
}
},
instance_id: function(instance_id) {
if ((/^uuid:/i.test(instance_id))) {
instance_id = instance_id.substr(5);
}
if(Grammar.parse(instance_id, 'uuid') === -1) {
return;
} else {
return instance_id;
}
},
no_answer_timeout: function(no_answer_timeout) {
var value;
if (Utils.isDecimal(no_answer_timeout)) {
value = Number(no_answer_timeout);
if (value > 0) {
return value;
}
}
},
session_timers: function(session_timers) {
if (typeof session_timers === 'boolean') {
return session_timers;
}
},
password: function(password) {
return String(password);
},
realm: function(realm) {
return String(realm);
},
ha1: function(ha1) {
return String(ha1);
},
register: function(register) {
if (typeof register === 'boolean') {
return register;
}
},
register_expires: function(register_expires) {
var value;
if (Utils.isDecimal(register_expires)) {
value = Number(register_expires);
if (value > 0) {
return value;
}
}
},
registrar_server: function(registrar_server) {
var parsed;
if (!/^sip:/i.test(registrar_server)) {
registrar_server = JsSIP_C.SIP + ':' + registrar_server;
}
parsed = URI.parse(registrar_server);
if(!parsed) {
return;
} else if(parsed.user) {
return;
} else {
return parsed;
}
},
sockets: function(sockets) {
var idx, length;
/* Allow defining sockets parameter as:
* Socket: socket
* Array of Socket: [socket1, socket2]
* Array of Objects: [{socket: socket1, weight:1}, {socket: Socket2, weight:0}]
* Array of Objects and Socket: [{socket: socket1}, socket2]
*/
if (Socket.isSocket(sockets)) {
sockets = [{socket: sockets}];
} else if (Array.isArray(sockets) && sockets.length) {
length = sockets.length;
for (idx = 0; idx < length; idx++) {
if (Socket.isSocket(sockets[idx])) {
sockets[idx] = {socket: sockets[idx]};
}
}
} else {
return;
}
return sockets;
},
use_preloaded_route: function(use_preloaded_route) {
if (typeof use_preloaded_route === 'boolean') {
return use_preloaded_route;
}
}
}
};
/**
* Transport event handlers
*/
// Transport connecting event
function onTransportConnecting(data) {
this.emit('connecting', data);
}
// Transport connected event.
function onTransportConnect(data) {
if(this.status === C.STATUS_USER_CLOSED) {
return;
}
this.status = C.STATUS_READY;
this.error = null;
this.emit('connected', data);
if(this.dynConfiguration.register) {
this._registrator.register();
}
}
// Transport disconnected event.
function onTransportDisconnect(data) {
// Run _onTransportError_ callback on every client transaction using _transport_
var type, idx, length,
client_transactions = ['nict', 'ict', 'nist', 'ist'];
length = client_transactions.length;
for (type = 0; type < length; type++) {
for(idx in this.transactions[client_transactions[type]]) {
this.transactions[client_transactions[type]][idx].onTransportError();
}
}
this.emit('disconnected', data);
// Call registrator _onTransportClosed_
this._registrator.onTransportClosed();
if (this.status !== C.STATUS_USER_CLOSED) {
this.status = C.STATUS_NOT_READY;
this.error = C.NETWORK_ERROR;
}
}
// Transport data event
function onTransportData(data) {
var transaction,
transport = data.transport,
message = data.message;
message = Parser.parseMessage(message, this);
if (! message) {
return;
}
if (this.status === UA.C.STATUS_USER_CLOSED &&
message instanceof SIPMessage.IncomingRequest) {
return;
}
// Do some sanity check
if(! sanityCheck(message, this, transport)) {
return;
}
if(message instanceof SIPMessage.IncomingRequest) {
message.transport = transport;
this.receiveRequest(message);
} else if(message instanceof SIPMessage.IncomingResponse) {
/* Unike stated in 18.1.2, if a response does not match
* any transaction, it is discarded here and no passed to the core
* in order to be discarded there.
*/
switch(message.method) {
case JsSIP_C.INVITE:
transaction = this.transactions.ict[message.via_branch];
if(transaction) {
transaction.receiveResponse(message);
}
break;
case JsSIP_C.ACK:
// Just in case ;-)
break;
default:
transaction = this.transactions.nict[message.via_branch];
if(transaction) {
transaction.receiveResponse(message);
}
break;
}
}
}
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