return hosts not ok

synced-pool.go

@@ -93,7 +93,15 @@ func (p *SyncedPool) NegotiateHandler(data *FrameWithPayload, resultChan chan<-
 		go p.AddRemote(host)
 
 	}
-	resultChan <- MakeFrameWithPayload(RemoteNegotiateResponse, 200, []byte("ok"))
+	p.mu.RLock()
+	defer p.mu.RUnlock()
+	hosts := make([]string, 0, len(p.remotes))
+	for _, r := range p.remotes {
+		if r.IsHealthy() {
+			hosts = append(hosts, r.Host)
+		}
+	}
+	resultChan <- MakeFrameWithPayload(RemoteNegotiateResponse, 200, []byte(strings.Join(hosts, ";")))
 	return nil
 }