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support sending DTMF to caller (#125)

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* support sending DTMF to caller

* wip
This commit is contained in:
Hoan Luu Huu
2023-12-13 21:14:27 +07:00
committed by GitHub
parent 0e1627ba82
commit b8a67019a1
2 changed files with 23 additions and 2 deletions
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21
lib/call-session.js
View File

@@ -780,6 +780,27 @@ 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.uac.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');
}
res.send(200);
}
}
else if (dlg.type === 'uas' && ['application/dtmf-relay', 'application/dtmf'].includes(contentType)) {

4
lib/utils.js
View File

@@ -22,8 +22,8 @@ function makeRtpEngineOpts(req, srcIsUsingSrtp, dstIsUsingSrtp, teams = false) {
const dstOpts = dstIsUsingSrtp ? srtpOpts : rtpCopy;
const srcOpts = srcIsUsingSrtp ? srtpOpts : rtpCopy;
/* webrtc clients (e.g. sipjs) send DMTF via SIP INFO */
if ((srcIsUsingSrtp || dstIsUsingSrtp) && !teams) {
/* Allow Feature server to inject DTMF to both leg except call from Teams*/
if (!teams) {
dstOpts.flags.push('inject DTMF');
srcOpts.flags.push('inject DTMF');
}