fix:#56 added update for grpc

services/data-manager/service/grpc/server.go

@@ -2,8 +2,10 @@ package grpc
 
 import (
 	"github.com/pocketbase/pocketbase"
+	"google.golang.org/grpc/keepalive"
 	"log"
 	"net"
+	"time"
 
 	"google.golang.org/grpc"
 	pb "htwkalender/common/genproto/modules"
@@ -14,7 +16,20 @@ func StartGRPCServer(app *pocketbase.PocketBase) {
 	if err != nil {
 		log.Fatalf("failed to listen: %v", err)
 	}
-	s := grpc.NewServer()
+	s := grpc.NewServer(
+		grpc.KeepaliveParams(keepalive.ServerParameters{
+			MaxConnectionIdle:     5 * time.Minute,  // Idle timeout before closing connection
+			MaxConnectionAge:      30 * time.Minute, // Max time before connection is closed
+			MaxConnectionAgeGrace: 5 * time.Minute,  // Allow grace period before closing
+			Time:                  2 * time.Minute,  // Ping the client every 2 minutes
+			Timeout:               20 * time.Second, // Wait 20 seconds for ping ack
+		}),
+		grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{
+			MinTime:             1 * time.Minute, // Minimum time between pings from clients
+			PermitWithoutStream: true,            // Don't allow pings when there are no active RPCs
+		}),
+		grpc.MaxConcurrentStreams(0),
+	)
 
 	pb.RegisterModuleServiceServer(s, &ModuleServiceHandler{
 		app: app,