fix: route call accept across pods

server/calls.go

@@ -330,6 +330,23 @@ func (call *videoCall) isStaleUnanswered(now time.Time, timeoutSeconds int) bool
 	return now.Sub(call.startedAt) > time.Duration(timeoutSeconds)*time.Second
 }
 
+func (call *videoCall) hasPartySessionOrUser(sid string, uid types.Uid) bool {
+	if call == nil {
+		return false
+	}
+	if sid != "" {
+		if _, ok := call.parties[sid]; ok {
+			return true
+		}
+	}
+	for _, party := range call.parties {
+		if party.uid == uid {
+			return true
+		}
+	}
+	return false
+}
+
 func (t *Topic) auditCallCreate(call *videoCall, caller types.Uid) {
 	if store.Calls == nil || call == nil || call.callID == "" || caller.IsZero() {
 		return
@@ -645,8 +662,14 @@ func (t *Topic) handleCallEvent(msg *ClientComMessage) {
 	case constCallEventHangUp:
 		switch len(t.currentCall.parties) {
 		case 2:
-			// If it's a call in progress, hangup may arrive only from a call participant session.
-			if _, ok := t.currentCall.parties[msg.sess.sid]; !ok {
+			// If it's a call in progress, hangup may arrive from any current
+			// session of a call participant. This also covers rtc-join
+			// auto-accept, where the accepting HTTP request has no WebSocket sid.
+			sid := ""
+			if msg.sess != nil {
+				sid = msg.sess.sid
+			}
+			if !t.currentCall.hasPartySessionOrUser(sid, asUid) {
 				return
 			}
 		case 1:
@@ -654,7 +677,11 @@ func (t *Topic) handleCallEvent(msg *ClientComMessage) {
 			originatorUid, originator := t.getCallOriginator()
 			// Hangup may come from either the originating session or
 			// any callee user session.
-			if asUid == originatorUid && originator.sid != msg.sess.sid {
+			sid := ""
+			if msg.sess != nil {
+				sid = msg.sess.sid
+			}
+			if asUid == originatorUid && originator.sid != sid {
 				return
 			}
 		default: