bugfix: sip_refer sending body

lib/session/call-session.js

@@ -584,7 +584,7 @@ class CallSession extends Emitter {
     task.doConferenceMuteNonModerators(this, opts);
   }
 
-  async _lccSipRequest(opts) {
+  async _lccSipRequest(opts, callSid) {
     const {sip_request} = opts;
     const {method, content_type, content, headers = {}} = sip_request;
     if (!this.hasStableDialog) {
@@ -592,13 +592,14 @@ class CallSession extends Emitter {
       return;
     }
     try {
-      const res = await this.dlg.request({
+      const dlg = callSid === this.callSid ? this.dlg : this.currentTask.dlg;
+      const res = await dlg.request({
         method,
         headers: {
           ...headers,
-          'Content-Type': content_type,
-          'Content': content
-        }
+          'Content-Type': content_type
+        },
+        body: content
       });
       this.logger.debug({res}, `CallSession:_lccSipRequest got response to ${method}`);
       return res;
@@ -683,7 +684,7 @@ class CallSession extends Emitter {
       await this._lccConfMuteStatus(opts);
     }
     else if (opts.sip_request) {
-      const res = await this._lccSipRequest(opts);
+      const res = await this._lccSipRequest(opts, callSid);
       return {status: res.status, reason: res.reason};
     }
 
@@ -770,7 +771,7 @@ class CallSession extends Emitter {
         break;
 
       case 'sip:request':
-        this._lccSipRequest(data)
+        this._lccSipRequest(data, this.callSid)
           .catch((err) => {
             this.logger.info({err, data}, `CallSession:_onCommand - error sending ${data.method}`);
           });