wip (#979)

lib/session/call-session.js

@@ -2,6 +2,7 @@ const Emitter = require('events');
 const fs = require('fs');
 const {
   CallDirection,
+  MediaPath,
   TaskPreconditions,
   CallStatus,
   TaskName,
@@ -1589,6 +1590,15 @@ Duration=${duration} `
     this.logger.info({response}, '_lccBoostAudioSignal: response from freeswitch');
   }
 
+  async _lccMediaPath(desiredPath) {
+    const task = this.currentTask;
+    if (!task || task.name !== TaskName.Dial) {
+      return this.logger.info('CallSession:_lccMediaPath - invalid command since we are not in a dial verb');
+    }
+    task.updateMediaPath(desiredPath)
+      .catch((err) => this.logger.error(err, 'CallSession:_lccMediaPath'));
+  }
+
   _lccToolOutput(tool_call_id, opts, callSid) {
     // only valid if we are in an LLM verb
     const task = this.currentTask;
@@ -1672,6 +1682,9 @@ Duration=${duration} `
     else if (opts.boostAudioSignal) {
       return this._lccBoostAudioSignal(opts, callSid);
     }
+    else if (opts.media_path) {
+      return this._lccMediaPath(opts.media_path, callSid);
+    }
     else if (opts.llm_tool_output) {
       return this._lccToolOutput(opts.tool_call_id, opts.llm_tool_output, callSid);
     }
@@ -1975,6 +1988,13 @@ Duration=${duration} `
           });
         break;
 
+      case 'media:path':
+        this._lccMediaPath(data, call_sid)
+          .catch((err) => {
+            this.logger.info({err, data}, 'CallSession:_onCommand - error setting media path');
+          });
+        break;
+
       case 'llm:tool-output':
         this._lccToolOutput(tool_call_id, data, call_sid);
         break;
@@ -2505,27 +2525,35 @@ Duration=${duration} `
     };
   }
 
-  async releaseMediaToSBC(remoteSdp) {
+  async releaseMediaToSBC(remoteSdp, releaseMediaEntirely) {
     assert(this.dlg && this.dlg.connected && this.ep && typeof remoteSdp === 'string');
     await this.dlg.modify(remoteSdp, {
       headers: {
-        'X-Reason': 'release-media'
+        'X-Reason': releaseMediaEntirely ? 'release-media-entirely' : 'release-media'
       }
     });
-    this.ep.destroy()
-      .then(() => this.ep = null)
-      .catch((err) => this.logger.error({err}, 'CallSession:releaseMediaToSBC: Error destroying endpoint'));
+    try {
+      await this.ep.destroy();
+    } catch (err) {
+      this.logger.error({err}, 'CallSession:releaseMediaToSBC: Error destroying endpoint');
+    }
+    this.ep = null;
   }
 
-  async reAnchorMedia() {
+  async reAnchorMedia(currentMediaRoute = MediaPath.PartialMedia) {
     assert(this.dlg && this.dlg.connected && !this.ep);
+
     this.ep = await this.ms.createEndpoint({remoteSdp: this.dlg.remote.sdp});
+    this._configMsEndpoint();
     await this.dlg.modify(this.ep.local.sdp, {
       headers: {
         'X-Reason': 'anchor-media'
       }
     });
-    this._configMsEndpoint();
+
+    if (currentMediaRoute === MediaPath.NoMedia) {
+      await this.ep.modify(this.dlg.remote.sdp);
+    }
   }
 
   async handleReinviteAfterMediaReleased(req, res) {