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bugfix for race condition where incoming call canceled quickly leading to potential endless loop

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This commit is contained in:
Dave Horton
2020-10-01 12:46:58 -04:00
parent e642e13946
commit 950f1c83b7
1 changed files with 10 additions and 2 deletions
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12
lib/session/call-session.js
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@@ -8,6 +8,7 @@ const makeTask = require('../tasks/make_task');
const normalizeJambones = require('../utils/normalize-jambones');
const listTaskNames = require('../utils/summarize-tasks');
const BADPRECONDITIONS = 'preconditions not met';
const CALLER_CANCELLED_ERR_MSG = 'Response not sent due to unknown transaction';
/**
* @classdesc Represents the execution context for a call.
@@ -497,8 +498,15 @@ class CallSession extends Emitter {
return ep;
} catch (err) {
this.logger.error(err, `Error attempting to allocate endpoint for for task ${task.name}`);
throw new Error(`${BADPRECONDITIONS}: unable to allocate endpoint`);
if (err === CALLER_CANCELLED_ERR_MSG) {
this.logger.error(err, 'caller canceled quickly before we could respond, ending call');
this._notifyCallStatusChange({callStatus: CallStatus.NoAnswer, sipStatus: 487});
this._callReleased();
}
else {
this.logger.error(err, `Error attempting to allocate endpoint for for task ${task.name}`);
throw new Error(`${BADPRECONDITIONS}: unable to allocate endpoint`);
}
}
}