add new values for keepalive

.github/workflows/golangci-lint.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: [ '1.22' ]
+        go-version: [ '1.23' ]
     steps:
       - uses: actions/checkout@v4
       - name: Setup Go
@@ -23,4 +23,4 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.59.1
+          version: v1.60.1

.github/workflows/unit.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go-version: [ '1.22' ]
+        go-version: [ '1.23' ]
     steps:
       - uses: actions/checkout@v4
       - name: Setup Go

.golangci.yml

@@ -1,4 +1,5 @@
 run:
+  go: "1.23"
   timeout: 1m
 linters:
   enable-all: true

Makefile

@@ -4,7 +4,7 @@ test:
 	go test -tags mock -race -cover ./...
 
 lint:
-	go run github.com/golangci/golangci-lint/cmd/golangci-lint@v1.59.1 run --color always ${args}
+	go run github.com/golangci/golangci-lint/cmd/golangci-lint@v1.60.1 run --color always ${args}
 
 lint-fix:
 	make lint args=--fix

go.mod

@@ -1,6 +1,6 @@
 module github.com/bavix/vakeel
 
-go 1.22.5
+go 1.23
 
 require (
 	github.com/bavix/apis v1.0.0

internal/build/agent.go

@@ -4,26 +4,47 @@ import (
 	"context"
 	"net"
 	"strconv"
+	"time"
 
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
+	"google.golang.org/grpc/keepalive"
 
 	"github.com/bavix/vakeel-way/pkg/api/vakeel_way"
 	"github.com/bavix/vakeel/internal/app"
 	"github.com/bavix/vakeel/internal/infra/templater"
 	"github.com/bavix/vakeel/pkg/ctxid"
 )
 
+// Keep-alive parameters for the gRPC client.
+// The client will send a ping to the server every 10 seconds if there is no activity.
+// The client will consider the connection dead if it doesn't receive a pong within 1 second.
+// The client will allow the connection to be established without a stream.
+const (
+	keepAliveTime       = 10 * time.Second // The time between pings.
+	keepAliveTimeout    = 1 * time.Second  // The time to wait for a pong.
+	allowWithoutStreams = true             // Allow the connection to be established without a stream.
+)
+
 // AgentApp creates a gRPC client and connects to the server's update service.
 // It returns an error if the connection or the update service call fails.
 //
 // ctx: The context.Context to use for the gRPC call.
 // Returns: An error if the connection or update service call fails.
 func (b *Builder) AgentApp(ctx context.Context) error {
 	// Create a gRPC client insecure connection to the server.
+	// The connection is established using the host and port from the configuration.
+	// The connection is configured with keep-alive parameters to send pings to the server
+	// every 10 seconds if there is no activity and to consider the connection dead if
+	// a ping ack is not received within 1 second.
 	conn, err := grpc.NewClient(
 		net.JoinHostPort(b.config.Host, strconv.Itoa(b.config.Port)),
 		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithKeepaliveParams(keepalive.ClientParameters{
+			Time:                keepAliveTime,
+			Timeout:             keepAliveTimeout,
+			PermitWithoutStream: allowWithoutStreams,
+		}),
 	)
 	if err != nil {
 		return err
@@ -32,8 +53,12 @@ func (b *Builder) AgentApp(ctx context.Context) error {
 	// Close the connection when the function returns.
 	defer conn.Close()
 
+	// Create a client for the vakeel_way.StateService.
 	serviceClient := vakeel_way.NewStateServiceClient(conn)
 
+	// Call the app.Agent function to start the agent.
+	// The agent sends update requests to the server using the client stream.
+	// The function returns an error if sending the update request fails.
 	return app.Agent(ctx, serviceClient)
 }