mirror of
https://github.com/jambonz/sbc-inbound.git
synced 2025-12-19 04:37:43 +00:00
75d8381ebb
* initial changes to use udp and dns in K8s for rtpengine ng * github actions * logging * remove port from service name before dns lookup * query rtpengine dns immediately on startup * bugfix prev checkin * use dns.lookup instead of resolve4 (k8s does not appear to consult search patterns in resolve.conf with the latter) * return all rtpengine endpoints in dns lookup * bugfix: polling rtpengine endpoints * fix prev commit * catch error on rtpengine failure * update deps * require node 14 in gh action build * specify node version in gh actions
629 lines
23 KiB
JavaScript
629 lines
23 KiB
JavaScript
const Emitter = require('events');
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const {makeRtpEngineOpts, SdpWantsSrtp, makeCallCountKey} = require('./utils');
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const {forwardInDialogRequests} = require('drachtio-fn-b2b-sugar');
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const {parseUri, stringifyUri, SipError} = require('drachtio-srf');
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const debug = require('debug')('jambonz:sbc-inbound');
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const MS_TEAMS_USER_AGENT = 'Microsoft.PSTNHub.SIPProxy';
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const MS_TEAMS_SIP_ENDPOINT = 'sip.pstnhub.microsoft.com';
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/**
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* this is to make sure the outgoing From has the number in the incoming From
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* and not the incoming PAI
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*/
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const createBLegFromHeader = (req) => {
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const from = req.getParsedHeader('From');
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const uri = parseUri(from.uri);
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if (uri && uri.user) return `<sip:${uri.user}@localhost>`;
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return '<sip:anonymous@localhost>';
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};
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class CallSession extends Emitter {
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constructor(logger, req, res) {
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super();
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this.req = req;
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this.res = res;
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this.srf = req.srf;
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this.logger = logger.child({callId: req.get('Call-ID')});
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this.getRtpEngine = req.srf.locals.getRtpEngine;
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this.getFeatureServer = req.srf.locals.getFeatureServer;
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this.stats = this.srf.locals.stats;
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this.writeCdrs = this.srf.locals.writeCdrs;
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this.activeCallIds = this.srf.locals.activeCallIds;
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this.decrKey = req.srf.locals.realtimeDbHelpers.decrKey;
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this.callCountKey = makeCallCountKey(req.locals.account_sid);
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}
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get isFromMSTeams() {
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return !!this.req.locals.msTeamsTenantFqdn;
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}
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get privateSipAddress() {
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return this.srf.locals.privateSipAddress;
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}
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async connect() {
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this.logger.info('inbound call accepted for routing');
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const engine = this.getRtpEngine();
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if (!engine) {
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this.logger.info('No available rtpengines, rejecting call!');
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const tags = ['accepted:no', 'sipStatus:480', `originator:${this.req.locals.originator}`];
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this.stats.increment('sbc.terminations', tags);
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return this.res.send(480);
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}
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debug(`got engine: ${JSON.stringify(engine)}`);
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const {
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offer,
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answer,
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del,
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blockMedia,
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unblockMedia,
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blockDTMF,
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unblockDTMF,
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subscribeDTMF,
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unsubscribeDTMF
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} = engine;
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this.offer = offer;
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this.answer = answer;
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this.del = del;
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this.blockMedia = blockMedia;
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this.unblockMedia = unblockMedia;
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this.blockDTMF = blockDTMF;
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this.unblockDTMF = unblockDTMF;
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this.subscribeDTMF = subscribeDTMF;
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this.unsubscribeDTMF = unsubscribeDTMF;
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const featureServer = await this.getFeatureServer();
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if (!featureServer) {
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this.logger.info('No available feature servers, rejecting call!');
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const tags = ['accepted:no', 'sipStatus:480', `originator:${this.req.locals.originator}`];
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this.stats.increment('sbc.terminations', tags);
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return this.res.send(480);
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}
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this.logger.debug(`using feature server ${featureServer}`);
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this.rtpEngineOpts = makeRtpEngineOpts(this.req, SdpWantsSrtp(this.req.body), false, this.isFromMSTeams);
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this.rtpEngineResource = {destroy: this.del.bind(null, this.rtpEngineOpts.common)};
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const obj = parseUri(this.req.uri);
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let proxy, host, uri;
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// replace host part of uri if its an ipv4 address, leave it otherwise
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if (/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.test(obj.host)) {
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debug(`replacing host: was ${obj.host} is ${featureServer}`);
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host = featureServer;
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}
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else {
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debug(`not replacing host: "${obj.host}"`);
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host = obj.host;
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proxy = `sip:${featureServer}`;
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}
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if (obj.user) uri = `${obj.scheme}:${obj.user}@${host}`;
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else uri = `${obj.scheme}:${host}`;
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this.logger.info(`uri will be: ${uri}, proxy ${proxy}`);
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try {
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const opts = {
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...this.rtpEngineOpts.common,
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...this.rtpEngineOpts.uac.mediaOpts,
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'from-tag': this.rtpEngineOpts.uas.tag,
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direction: ['public', 'private'],
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sdp: this.req.body
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};
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const response = await this.offer(opts);
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this.logger.debug({opts, response}, 'response from rtpengine to offer');
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if ('ok' !== response.result) {
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this.logger.error({}, `rtpengine offer failed with ${JSON.stringify(response)}`);
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throw new Error('rtpengine failed: answer');
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}
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// now send the INVITE in towards the feature servers
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let headers = {
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'From': createBLegFromHeader(this.req),
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'To': this.req.get('To'),
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'X-Account-Sid': this.req.locals.account_sid,
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'X-CID': this.req.get('Call-ID'),
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'X-Forwarded-For': `${this.req.source_address}`
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};
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if (this.privateSipAddress) headers = {...headers, Contact: `<sip:${this.privateSipAddress}>`};
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const responseHeaders = {};
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if (this.req.locals.carrier) {
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Object.assign(headers, {
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'X-Originating-Carrier': this.req.locals.carrier,
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'X-Voip-Carrier-Sid': this.req.locals.voip_carrier_sid
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});
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}
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if (this.req.locals.msTeamsTenantFqdn) {
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Object.assign(headers, {'X-MS-Teams-Tenant-FQDN': this.req.locals.msTeamsTenantFqdn});
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// for Microsoft Teams the Contact header must include the tenant FQDN
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Object.assign(responseHeaders, {
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Allow: 'INVITE, ACK, OPTIONS, CANCEL, BYE, NOTIFY, UPDATE, PRACK',
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Contact: `sip:${this.req.locals.msTeamsTenantFqdn}`
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});
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}
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if (this.req.locals.application_sid) {
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Object.assign(headers, {'X-Application-Sid': this.req.locals.application_sid});
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}
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else if (this.req.authorization) {
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if (this.req.authorization.grant && this.req.authorization.grant.application_sid) {
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Object.assign(headers, {'X-Application-Sid': this.req.authorization.grant.application_sid});
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}
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if (this.req.authorization.challengeResponse) {
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const {username, realm} = this.req.authorization.challengeResponse;
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Object.assign(headers, {'X-Authenticated-User': `${username}@${realm}`});
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}
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}
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if (this.req.canceled) throw new Error('call canceled');
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debug(`sending INVITE to ${proxy} with ${uri}`);
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const {uas, uac} = await this.srf.createB2BUA(this.req, this.res, uri, {
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proxy,
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headers,
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responseHeaders,
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proxyRequestHeaders: [
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'all',
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'-Authorization',
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'-Max-Forwards',
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'-Record-Route',
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'-Session-Expires',
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'-X-Subspace-Forwarded-For'
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],
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proxyResponseHeaders: ['all'],
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localSdpB: response.sdp,
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localSdpA: async(sdp, res) => {
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this.rtpEngineOpts.uac.tag = res.getParsedHeader('To').params.tag;
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const opts = {
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...this.rtpEngineOpts.common,
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...this.rtpEngineOpts.uas.mediaOpts,
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'from-tag': this.rtpEngineOpts.uas.tag,
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'to-tag': this.rtpEngineOpts.uac.tag,
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sdp
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};
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const response = await this.answer(opts);
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if ('ok' !== response.result) {
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this.logger.error(`rtpengine answer failed with ${JSON.stringify(response)}`);
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throw new Error('rtpengine failed: answer');
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}
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return response.sdp;
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}
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});
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// successfully connected
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this.logger.info('call connected successfully to feature server');
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debug('call connected successfully to feature server');
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this._setHandlers({uas, uac});
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return;
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} catch (err) {
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this.rtpEngineResource.destroy().catch((err) => this.logger.info({err}, 'Error destroying rtpe after failure'));
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this.activeCallIds.delete(this.req.get('Call-ID'));
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this.stats.gauge('sbc.sip.calls.count', this.activeCallIds.size);
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if (err instanceof SipError) {
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const tags = ['accepted:no', `sipStatus:${err.status}`, `originator:${this.req.locals.originator}`];
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this.stats.increment('sbc.terminations', tags);
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this.logger.info(`call failed to connect to feature server with ${err.status}`);
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return this.emit('failed');
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}
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else if (err.message !== 'call canceled') {
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this.logger.error(err, 'unexpected error routing inbound call');
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}
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this.srf.endSession(this.req);
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}
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}
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_setDlgHandlers(dlg) {
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const {callId} = dlg.sip;
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this.activeCallIds.set(callId, this);
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this.subscribeDTMF(this.logger, callId, this.rtpEngineOpts.uas.tag,
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this._onDTMF.bind(this));
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dlg.on('destroy', () => {
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debug('call ended with normal termination');
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this.logger.info('call ended with normal termination');
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this.rtpEngineResource.destroy().catch((err) => {});
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this.activeCallIds.delete(callId);
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if (dlg.other && dlg.other.connected) dlg.other.destroy().catch((e) => {});
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this.srf.endSession(this.req);
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});
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//re-invite
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dlg.on('modify', this._onReinvite.bind(this, dlg));
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}
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_setHandlers({uas, uac}) {
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this.emit('connected');
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const callStart = Date.now();
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const tags = ['accepted:yes', 'sipStatus:200', `originator:${this.req.locals.originator}`];
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this.stats.increment('sbc.terminations', tags);
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this.activeCallIds.set(this.req.get('Call-ID'), this);
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if (this.req.locals.cdr) {
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this.req.locals.cdr = {
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...this.req.locals.cdr,
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answered: true,
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answered_at: callStart
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};
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}
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this.uas = uas;
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this.uac = uac;
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[uas, uac].forEach((dlg) => {
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dlg.on('destroy', () => {
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this.logger.info('call ended with normal termination');
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this.rtpEngineResource.destroy().catch((err) => {});
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this.activeCallIds.delete(this.req.get('Call-ID'));
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dlg.other.destroy().catch((e) => {});
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this.unsubscribeDTMF(this.logger, this.req.get('Call-ID'), this.rtpEngineOpts.uas.tag);
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if (process.env.JAMBONES_HOSTING) {
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this.decrKey(this.callCountKey)
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.then((count) => this.logger.debug({key: this.callCountKey},
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`after hangup there are ${count} active calls for this account`))
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.catch((err) => this.logger.error({err}, 'Error decrementing call count'));
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}
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/* write cdr for connected call */
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if (this.req.locals.cdr) {
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const now = Date.now();
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const trunk = ['trunk', 'teams'].includes(this.req.locals.originator) ?
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this.req.locals.carrier :
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this.req.locals.originator;
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this.writeCdrs({...this.req.locals.cdr,
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terminated_at: now,
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termination_reason: dlg.type === 'uas' ? 'caller hungup' : 'called party hungup',
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sip_status: 200,
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duration: Math.floor((now - callStart) / 1000),
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trunk
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}).catch((err) => this.logger.error({err}, 'Error writing cdr for completed call'));
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}
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this.srf.endSession(this.req);
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});
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});
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this.subscribeDTMF(this.logger, this.req.get('Call-ID'), this.rtpEngineOpts.uas.tag,
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this._onDTMF.bind(this, uac));
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uas.on('modify', this._onReinvite.bind(this, uas));
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uac.on('modify', this._onReinvite.bind(this, uac));
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uac.on('refer', this._onFeatureServerTransfer.bind(this, uac));
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uas.on('refer', this._onRefer.bind(this, uas));
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uas.on('info', this._onInfo.bind(this, uas));
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uac.on('info', this._onInfo.bind(this, uac));
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// default forwarding of other request types
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forwardInDialogRequests(uas, ['notify', 'options', 'message']);
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}
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async _onDTMF(dlg, payload) {
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this.logger.info({payload}, '_onDTMF');
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try {
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let dtmf;
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switch (payload.event) {
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case 10:
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dtmf = '*';
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break;
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case 11:
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dtmf = '#';
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break;
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default:
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dtmf = '' + payload.event;
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break;
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}
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await dlg.request({
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method: 'INFO',
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headers: {
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'Content-Type': 'application/dtmf-relay'
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},
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body: `Signal=${dtmf}
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Duration=${payload.duration} `
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});
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} catch (err) {
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this.logger.info({err}, 'Error sending INFO application/dtmf-relay');
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}
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}
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/**
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* handle INVITE with Replaces header from uas side (this will never come from the feature server)
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* @param {*} req incoming request
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* @param {*} res incoming response
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*/
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async replaces(req, res) {
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try {
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let opts = Object.assign({}, this.rtpEngineOpts.uas.mediaOpts, {sdp: req.body});
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let response = await this.offer(opts);
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if ('ok' !== response.result) {
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res.send(488);
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throw new Error(`replaces: rtpengine failed: offer: ${JSON.stringify(response)}`);
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}
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this.logger.info({opts, response}, 'sent offer for reinvite to rtpengine');
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const sdp = await this.uac.modify(response.sdp);
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opts = Object.assign({}, this.rtpEngineOpts.uac.mediaOpts, {sdp, 'to-tag': this.toTag});
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Object.assign(this.rtpEngineOpts.uas.mediaOpts, {'to-tag': this.toTag});
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response = await this.answer(opts);
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if ('ok' !== response.result) {
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res.send(488);
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throw new Error(`replaces: rtpengine failed: ${JSON.stringify(response)}`);
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}
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this.logger.info({opts, response}, 'sent answer for reinvite to rtpengine');
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const headers = {};
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if (this.req.locals.msTeamsTenantFqdn) {
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Object.assign(headers, {'X-MS-Teams-Tenant-FQDN': this.req.locals.msTeamsTenantFqdn});
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// for Microsoft Teams the Contact header must include the tenant FQDN
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Object.assign(headers, {
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Allow: 'INVITE, ACK, OPTIONS, CANCEL, BYE, NOTIFY',
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Contact: `sip:${this.req.locals.msTeamsTenantFqdn}`
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});
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}
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this.unsubscribeDTMF(this.logger, this.req.get('Call-ID'), this.rtpEngineOpts.uas.tag);
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const uas = await this.srf.createUAS(req, res, {
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localSdp: response.sdp,
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headers
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});
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this.logger.info('successfully connected new INVITE w/replaces, hanging up leg being replaced');
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this.uas.destroy();
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this.req = req;
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this.uas = uas;
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this.uas.other = this.uac;
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this.uac.other = this.uas;
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this.activeCallIds.delete(this.req.get('Call-ID'));
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this._setDlgHandlers(uas);
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} catch (err) {
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this.logger.error(err, 'Error handling invite with replaces');
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res.send(err.status || 500);
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}
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}
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async _onReinvite(dlg, req, res) {
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try {
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/* check for re-invite with no SDP -- seen that from BT when they provide UUI info */
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if (!req.body) {
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this.logger.info('got a reINVITE with no SDP; just respond with our current offer');
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res.send(200, {body: dlg.local.sdp});
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return;
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}
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const reason = req.get('X-Reason');
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const fromTag = dlg.type === 'uas' ? this.rtpEngineOpts.uas.tag : this.rtpEngineOpts.uac.tag;
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const toTag = dlg.type === 'uas' ? this.rtpEngineOpts.uac.tag : this.rtpEngineOpts.uas.tag;
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const offerMedia = dlg.type === 'uas' ? this.rtpEngineOpts.uac.mediaOpts : this.rtpEngineOpts.uas.mediaOpts;
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const answerMedia = dlg.type === 'uas' ? this.rtpEngineOpts.uas.mediaOpts : this.rtpEngineOpts.uac.mediaOpts;
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const direction = dlg.type === 'uas' ? ['public', 'private'] : ['private', 'public'];
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let opts = {
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...this.rtpEngineOpts.common,
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...offerMedia,
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'from-tag': fromTag,
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'to-tag': toTag,
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direction,
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sdp: req.body,
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};
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//if (reason && opts.flags && !opts.flags.includes('reset')) opts.flags.push('reset');
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let response = await this.offer(opts);
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if ('ok' !== response.result) {
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res.send(488);
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throw new Error(`_onReinvite: rtpengine failed: offer: ${JSON.stringify(response)}`);
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}
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/* if this is a re-invite from the FS to change media anchoring, avoid sending the reinvite out */
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let sdp;
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if (reason && dlg.type === 'uac' && ['release-media', 'anchor-media'].includes(reason)) {
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this.logger.info({response}, `got a reinvite from FS to ${reason}`);
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sdp = dlg.other.remote.sdp;
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}
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else {
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sdp = await dlg.other.modify(response.sdp);
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}
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opts = {
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...this.rtpEngineOpts.common,
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...answerMedia,
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'from-tag': fromTag,
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'to-tag': toTag,
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sdp
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};
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response = await this.answer(opts);
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if ('ok' !== response.result) {
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res.send(488);
|
|
throw new Error(`_onReinvite: rtpengine failed: ${JSON.stringify(response)}`);
|
|
}
|
|
res.send(200, {body: response.sdp});
|
|
} catch (err) {
|
|
this.logger.error(err, 'Error handling reinvite');
|
|
}
|
|
}
|
|
|
|
async _onInfo(dlg, req, res) {
|
|
const fromTag = dlg.type === 'uas' ? this.rtpEngineOpts.uas.tag : this.rtpEngineOpts.uac.tag;
|
|
try {
|
|
if (dlg.type === 'uac' && req.has('X-Reason')) {
|
|
const reason = req.get('X-Reason');
|
|
const opts = {
|
|
...this.rtpEngineOpts.common,
|
|
flags: ['reset'],
|
|
'from-tag': fromTag
|
|
};
|
|
this.logger.info(`_onInfo: got request ${reason}`);
|
|
res.send(200);
|
|
|
|
if (reason.startsWith('mute')) {
|
|
const response = Promise.all([this.blockMedia(opts), this.blockDTMF(opts)]);
|
|
this.logger.info({response}, `_onInfo: response to rtpengine command for ${reason}`);
|
|
}
|
|
else if (reason.startsWith('unmute')) {
|
|
const response = Promise.all([this.unblockMedia(opts), this.unblockDTMF(opts)]);
|
|
this.logger.info({response}, `_onInfo: response to rtpengine command for ${reason}`);
|
|
}
|
|
}
|
|
else {
|
|
const immutableHdrs = ['via', 'from', 'to', 'call-id', 'cseq', 'max-forwards', 'content-length'];
|
|
const headers = {};
|
|
Object.keys(req.headers).forEach((h) => {
|
|
if (!immutableHdrs.includes(h)) headers[h] = req.headers[h];
|
|
});
|
|
const response = await dlg.other.request({method: 'INFO', headers, body: req.body});
|
|
const responseHeaders = {};
|
|
if (response.has('Content-Type')) {
|
|
Object.assign(responseHeaders, {'Content-Type': response.get('Content-Type')});
|
|
}
|
|
res.send(response.status, {headers: responseHeaders, body: response.body});
|
|
}
|
|
} catch (err) {
|
|
this.logger.info({err}, `Error handing INFO request on ${dlg.type} leg`);
|
|
}
|
|
}
|
|
|
|
async _onFeatureServerTransfer(dlg, req, res) {
|
|
try {
|
|
const referTo = req.getParsedHeader('Refer-To');
|
|
const uri = parseUri(referTo.uri);
|
|
this.logger.info({uri, referTo, headers: req.headers}, 'received REFER from feature server');
|
|
const arr = /context-(.*)/.exec(uri.user);
|
|
if (!arr) {
|
|
/* call transfer requested */
|
|
const {gateway} = this.req.locals;
|
|
const referredBy = req.getParsedHeader('Referred-By');
|
|
if (!referredBy) return res.send(400);
|
|
const u = parseUri(referredBy.uri);
|
|
|
|
let selectedGateway = false;
|
|
let e164 = false;
|
|
if (gateway) {
|
|
/* host of Refer-to to an outbound gateway */
|
|
const gw = await this.srf.locals.getOutboundGatewayForRefer(gateway.voip_carrier_sid);
|
|
if (gw) {
|
|
selectedGateway = true;
|
|
e164 = gw.e164_leading_plus;
|
|
uri.host = gw.ipv4;
|
|
uri.port = gw.port;
|
|
}
|
|
}
|
|
if (!selectedGateway) {
|
|
uri.host = this.req.source_address;
|
|
uri.port = this.req.source_port;
|
|
}
|
|
if (e164 && !uri.user.startsWith('+')) {
|
|
uri.user = `+${uri.user}`;
|
|
}
|
|
const response = await this.uas.request({
|
|
method: 'REFER',
|
|
headers: {
|
|
'Refer-To': stringifyUri(uri),
|
|
'Referred-By': stringifyUri(u)
|
|
}
|
|
});
|
|
return res.send(response.status);
|
|
}
|
|
res.send(202);
|
|
|
|
// invite to new fs
|
|
const headers = {};
|
|
if (req.has('X-Retain-Call-Sid')) {
|
|
Object.assign(headers, {'X-Retain-Call-Sid': req.get('X-Retain-Call-Sid')});
|
|
}
|
|
const uac = await this.srf.createUAC(referTo.uri, {localSdp: dlg.local.sdp, headers});
|
|
this.uac = uac;
|
|
uac.other = this.uas;
|
|
this.uas.other = uac;
|
|
uac.on('modify', this._onFeatureServerReinvite.bind(this, uac));
|
|
uac.on('refer', this._onFeatureServerTransfer.bind(this, uac));
|
|
uac.on('destroy', () => {
|
|
this.logger.info('call ended with normal termination');
|
|
this.rtpEngineResource.destroy();
|
|
this.activeCallIds.delete(this.req.get('Call-ID'));
|
|
uac.other.destroy();
|
|
this.srf.endSession(this.req);
|
|
});
|
|
// now we can destroy the old dialog
|
|
dlg.destroy().catch(() => {});
|
|
|
|
// modify rtpengine to stream to new feature server
|
|
const opts = Object.assign({sdp: uac.remote.sdp, 'to-tag': res.getParsedHeader('To').params.tag},
|
|
this.rtpEngineOpts.answer);
|
|
const response = await this.answer(opts);
|
|
if ('ok' !== response.result) {
|
|
res.send(488);
|
|
throw new Error(`_onFeatureServerReinvite: rtpengine failed: ${JSON.stringify(response)}`);
|
|
}
|
|
this.logger.info('successfully moved call to new feature server');
|
|
} catch (err) {
|
|
this.logger.error(err, 'Error handling refer from feature server');
|
|
}
|
|
}
|
|
|
|
|
|
async _onRefer(dlg, req, res) {
|
|
const ua = req.get('User-Agent');
|
|
const referTo = req.get('Refer-To');
|
|
const rt = req.getParsedHeader('Refer-To');
|
|
const uri = parseUri(rt.uri);
|
|
this.logger.info({referTo, ua, rt, uri}, 'got a REFER');
|
|
|
|
/**
|
|
* send NOTIFY of INVITE status, return true if call answered
|
|
*/
|
|
const sendNotify = (dlg, body) => {
|
|
const arr = /SIP\/2.0\s+(\d+).*$/.exec(body);
|
|
const status = arr ? parseInt(arr[1]) : null;
|
|
dlg.request({
|
|
method: 'NOTIFY',
|
|
headers: {
|
|
'Content-Type': 'message/sipfrag;version=2.0',
|
|
'Contact': `sip:${this.req.locals.msTeamsTenantFqdn}`
|
|
},
|
|
body
|
|
});
|
|
this.logger.info(`sent NOTIFY for REFER with status ${status}`);
|
|
return status === 200;
|
|
};
|
|
|
|
if (this.isFromMSTeams && ua.startsWith(MS_TEAMS_USER_AGENT) &&
|
|
referTo.startsWith(`<sip:${MS_TEAMS_SIP_ENDPOINT}`) &&
|
|
!uri.user) {
|
|
|
|
// the Refer-To endpoint is within Teams itself, so we can handle
|
|
res.send(202);
|
|
try {
|
|
const dlg = await this.srf.createUAC(rt.uri, {
|
|
localSdp: this.uas.local.sdp.replace(/a=inactive/g, 'a=sendrecv'),
|
|
headers: {
|
|
'From': `sip:${this.req.callingNumber}@${this.req.locals.msTeamsTenantFqdn}`,
|
|
'Contact': `sip:${this.req.callingNumber}@${this.req.locals.msTeamsTenantFqdn}`
|
|
}
|
|
},
|
|
{
|
|
cbRequest: (err, inviteSent) => {
|
|
if (err) return sendNotify(this.uas, `SIP/2.0 ${err.status || '500'}`);
|
|
sendNotify(this.uas, '100 Trying ');
|
|
this.referInvite = inviteSent;
|
|
},
|
|
cbProvisional: (prov) => {
|
|
sendNotify(this.uas, `${prov.status} ${prov.reason}`);
|
|
}
|
|
});
|
|
|
|
// successfully connected
|
|
this.logger.info('successfully connected new call leg for REFER');
|
|
this.unsubscribeDTMF(this.logger, this.req.get('Call-ID'), this.rtpEngineOpts.uas.tag);
|
|
this.referInvite = null;
|
|
sendNotify(this.uas, '200 OK');
|
|
this.uas.destroy();
|
|
this.uas = dlg;
|
|
this.uas.other = this.uac;
|
|
this.activeCallIds.delete(this.req.get('Call-ID'));
|
|
this._setDlgHandlers(dlg);
|
|
} catch (err) {
|
|
this.logger.error({err}, 'Error creating new call leg for REFER');
|
|
sendNotify(this.uas, `${err.status || 500} ${err.reason || ''}`);
|
|
}
|
|
}
|
|
else {
|
|
// TODO: forward on to feature server
|
|
res.send(501);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
module.exports = CallSession;
|