add sms messaging support

lib/session/call-info.js

@@ -44,6 +44,14 @@ class CallInfo {
       this.callStatus = CallStatus.Trying,
       this.sipStatus = 100;
     }
+    else if (this.direction === CallDirection.None) {
+      // outbound SMS
+      const {messageSid, accountSid, applicationSid, res} = opts;
+      this.messageSid = messageSid;
+      this.accountSid = accountSid;
+      this.applicationSid = applicationSid;
+      this.res = res;
+    }
     else {
       // outbound call triggered by REST
       const {req, accountSid, applicationSid, to, tag} = opts;

lib/session/call-session.js

@@ -34,18 +34,20 @@ class CallSession extends Emitter {
     this.srf = srf;
     this.callInfo = callInfo;
     this.tasks = tasks;
-
-    this.updateCallStatus = srf.locals.dbHelpers.updateCallStatus;
-    this.serviceUrl = srf.locals.serviceUrl;
-
     this.taskIdx = 0;
     this.stackIdx = 0;
     this.callGone = false;
 
     this.tmpFiles = new Set();
 
-    // if this is a ConfirmSession
-    if (!this.isConfirmCallSession) sessionTracker.add(this.callSid, this);
+    if (!this.isSmsCallSession) {
+      this.updateCallStatus = srf.locals.dbHelpers.updateCallStatus;
+      this.serviceUrl = srf.locals.serviceUrl;
+    }
+
+    if (!this.isConfirmCallSession && !this.isSmsCallSession) {
+      sessionTracker.add(this.callSid, this);
+    }
   }
 
   /**
@@ -66,7 +68,7 @@ class CallSession extends Emitter {
    * SIP call-id for the call
    */
   get callId() {
-    return this.callInfo.direction;
+    return this.callInfo.callId;
   }
 
   /**
@@ -166,6 +168,13 @@ class CallSession extends Emitter {
     return this.constructor.name === 'ConfirmCallSession';
   }
 
+  /**
+   * returns true if this session is a SmsCallSession
+   */
+  get isSmsCallSession() {
+    return this.constructor.name === 'SmsCallSession';
+  }
+
   /**
    * execute the tasks in the CallSession.  The tasks are executed in sequence until
    * they complete, or the caller hangs up.
@@ -201,7 +210,7 @@ class CallSession extends Emitter {
     this._onTasksDone();
     this._clearResources();
 
-    if (!this.isConfirmCallSession) sessionTracker.remove(this.callSid);
+    if (!this.isConfirmCallSession && !this.isSmsCallSession) sessionTracker.remove(this.callSid);
   }
 
   trackTmpFile(path) {

lib/session/sms-call-session.js

@@ -0,0 +1,22 @@
+const CallSession = require('./call-session');
+
+/**
+ * @classdesc Subclass of CallSession.  Represents a CallSession
+ * that is established for the purpose of sending an outbound SMS
+ * @extends CallSession
+
+ */
+class SmsCallSession extends CallSession {
+  constructor({logger, application, srf, tasks, callInfo}) {
+    super({
+      logger,
+      application,
+      srf,
+      tasks,
+      callInfo
+    });
+  }
+
+}
+
+module.exports = SmsCallSession;