Fix JsSIP 3.7.1 doesn't allow sending DTMF during EarlyMedia #689

dist/jssip.js

@@ -15728,7 +15728,16 @@ module.exports = /*#__PURE__*/function (_EventEmitter) {
     key: "sendRequest",
     value: function sendRequest(method, options) {
       logger.debug('sendRequest()');
-      return this._dialog.sendRequest(method, options);
+      if (this._dialog) {
+        return this._dialog.sendRequest(method, options);
+      } else {
+        var dialogsArray = Object.values(this._earlyDialogs);
+        if (dialogsArray.length > 0) {
+          return dialogsArray[0].sendRequest(method, options);
+        }
+        logger.warn('No valid early dialog found to send request');
+        return;
+      }
     }
 
     /**
@@ -16215,6 +16224,10 @@ module.exports = /*#__PURE__*/function (_EventEmitter) {
         if (early_dialog) {
           early_dialog.update(message, type);
           this._dialog = early_dialog;
+          // When an early dialog is promoted to a confirmed dialog (e.g., after calling an IVR menu),
+          // the local CSeq must be synchronized
+          // with the value from the 200 OK response to keep the dialog sequence in sync.
+          this._dialog._local_seqnum = message.cseq;
           delete this._earlyDialogs[id];
           return true;
         }
@@ -17565,7 +17578,7 @@ module.exports = /*#__PURE__*/function (_EventEmitter) {
       this._direction = 'outgoing';
 
       // Check RTCSession Status.
-      if (this._session.status !== this._session.C.STATUS_CONFIRMED && this._session.status !== this._session.C.STATUS_WAITING_FOR_ACK) {
+      if (this._session.status !== this._session.C.STATUS_CONFIRMED && this._session.status !== this._session.C.STATUS_WAITING_FOR_ACK && this._session.status !== this._session.C.STATUS_1XX_RECEIVED) {
         throw new Exceptions.InvalidStateError(this._session.status);
       }
       var extraHeaders = Utils.cloneArray(options.extraHeaders);

lib/RTCSession.js

@@ -1420,7 +1420,23 @@ module.exports = class RTCSession extends EventEmitter
   {
     logger.debug('sendRequest()');
 
-    return this._dialog.sendRequest(method, options);
+    if (this._dialog)
+    {
+      return this._dialog.sendRequest(method, options);
+    }
+    else
+    {
+      const dialogsArray = Object.values(this._earlyDialogs);
+
+      if (dialogsArray.length > 0)
+      {
+        return dialogsArray[0].sendRequest(method, options);
+      }
+
+      logger.warn('No valid early dialog found to send request');
+
+      return;
+    }
   }
 
   /**
@@ -2060,6 +2076,10 @@ module.exports = class RTCSession extends EventEmitter
       {
         early_dialog.update(message, type);
         this._dialog = early_dialog;
+        // When an early dialog is promoted to a confirmed dialog (e.g., after calling an IVR menu),
+        // the local CSeq must be synchronized
+        // with the value from the 200 OK response to keep the dialog sequence in sync.
+        this._dialog._local_seqnum = message.cseq;
         delete this._earlyDialogs[id];
 
         return true;

lib/RTCSession/DTMF.js

@@ -47,8 +47,11 @@ module.exports = class DTMF extends EventEmitter
     this._direction = 'outgoing';
 
     // Check RTCSession Status.
-    if (this._session.status !== this._session.C.STATUS_CONFIRMED &&
-      this._session.status !== this._session.C.STATUS_WAITING_FOR_ACK)
+    if (
+      this._session.status !== this._session.C.STATUS_CONFIRMED &&
+      this._session.status !== this._session.C.STATUS_WAITING_FOR_ACK &&
+      this._session.status !== this._session.C.STATUS_1XX_RECEIVED
+    )
     {
       throw new Exceptions.InvalidStateError(this._session.status);
     }