Reopen closed fabric peer sessions

agents/rap-node-agent/internal/mesh/client.go

@@ -293,6 +293,18 @@ func (p *FabricSessionPump) Errors() <-chan error {
 	return p.errors
 }
 
+func (p *FabricSessionPump) Closed() bool {
+	if p == nil {
+		return true
+	}
+	select {
+	case <-p.done:
+		return true
+	default:
+		return false
+	}
+}
+
 func (p *FabricSessionPump) Close() error {
 	if p == nil {
 		return nil