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Feat support Outbound DTMF (#115)

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* feat/support inband dtmf

* wip

* wip

* wip

* wip

* wip

* wip

* wip
This commit is contained in:
Hoan Luu Huu
2023-12-11 22:40:24 +07:00
committed by GitHub
parent d684fbb59b
commit eb0de5b0ee
2 changed files with 29 additions and 5 deletions
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22
lib/call-session.js
View File

@@ -450,7 +450,7 @@ class CallSession extends Emitter {
...this.rtpEngineOpts.uas.mediaOpts,
'from-tag': this.rtpEngineOpts.uas.tag,
'to-tag': this.rtpEngineOpts.uac.tag,
flags: ['single codec'],
flags: ['single codec', 'inject DTMF'],
sdp
};
const response = await this.answer(opts);
@@ -868,6 +868,26 @@ Duration=${payload.duration} `
)).every((r) => r);
}
res.send(succeeded ? 200 : 503);
} else if (reason.includes('Dtmf')) {
const arr = /Signal=\s*([0-9#*])/.exec(req.body);
if (!arr) {
this.logger.info({body: req.body}, '_onInfo: invalid INFO Dtmf');
throw new Error(`_onInfo: no dtmf in body for ${contentType}`);
}
const code = arr[1];
const arr2 = /Duration=\s*(\d+)/.exec(req.body);
const duration = arr2 ? arr2[1] : 250;
const dtmfOpts = {
...this.rtpEngineOpts.common,
'from-tag': this.rtpEngineOpts.uas.tag,
code,
duration
};
const response = await this.playDTMF(dtmfOpts);
if ('ok' !== response.result) {
this.logger.info({response}, `rtpengine play Dtmf failed with ${JSON.stringify(response)}`);
throw new Error('rtpengine failed: answer');
}
}
}
else if (dlg.type === 'uac' && ['application/dtmf-relay', 'application/dtmf'].includes(contentType)) {

12
lib/utils.js
View File

@@ -21,10 +21,14 @@ function makeRtpEngineOpts(req, srcIsUsingSrtp, dstIsUsingSrtp, padCrypto, teams
const dstOpts = dstIsUsingSrtp ? srtpOpts : rtpCopy;
const srcOpts = srcIsUsingSrtp ? srtpOpts : rtpCopy;
/* webrtc clients (e.g. sipjs) send DMTF via SIP INFO */
if ((srcIsUsingSrtp || dstIsUsingSrtp) && !teams) {
dstOpts.flags.push('inject DTMF');
srcOpts.flags.push('inject DTMF');
/** Allow feature server to send DTMF to the call excepts call from/to teams */
if (!teams) {
if (!dstOpts.flags.includes('inject DTMF')) {
dstOpts.flags.push('inject DTMF');
}
if (!srcOpts.flags.includes('inject DTMF')) {
srcOpts.flags.push('inject DTMF');
}
}
const common = {
'call-id': req.get('Call-ID'),