first commit

client/main.go

@@ -0,0 +1,82 @@
+package main
+
+import (
+	"log"
+	"net"
+	"time"
+
+	pb "gordenko.dev/dima/protolab/gen/service/v1"
+
+	"gordenko.dev/dima/protolab/bin"
+)
+
+const (
+	ServerAddr = "localhost:8080"
+)
+
+func main() {
+	conn, err := net.Dial("tcp", ServerAddr)
+	if err != nil {
+		log.Fatalf("net.Dial: %v\n", err)
+	}
+	defer conn.Close()
+
+	log.Println("connected to server")
+
+	for {
+		// PING
+		pingReq := &pb.RequestWrapper{
+			Payload: &pb.RequestWrapper_Ping{
+				Ping: &pb.PingRequest{
+					Timestamp: time.Now().Unix(),
+				},
+			},
+		}
+
+		err = bin.WriteMessage(conn, pingReq)
+		if err != nil {
+			log.Fatalf("send ping: %v", err)
+		} else {
+			log.Println("ping sent")
+		}
+
+		var pingResp pb.ResponseWrapper
+		err = bin.ReadMessage(conn, &pingResp)
+		if err != nil {
+			log.Fatalf("read ping response: %v", err)
+		}
+		if resp := pingResp.GetPingResp(); resp != nil {
+			log.Printf("pong received, server time: %s\n",
+				time.Unix(resp.GetServerTimestamp(), 0).Format(time.RFC3339))
+		}
+
+		time.Sleep(3 * time.Second)
+		// TELEMETRY
+		telemetryReq := &pb.RequestWrapper{
+			Payload: &pb.RequestWrapper_SendTelemetry{
+				SendTelemetry: &pb.TelemetryData{
+					DeviceId:     "device-123",
+					Timestamp:    time.Now().Unix(),
+					Temperature:  25,
+					BatteryLevel: 70,
+				},
+			},
+		}
+		err = bin.WriteMessage(conn, telemetryReq)
+		if err != nil {
+			log.Fatalf("send telemetry: %v", err)
+		} else {
+			log.Println("telemetry sent")
+		}
+
+		var telemetryResp pb.ResponseWrapper
+		err = bin.ReadMessage(conn, &telemetryResp)
+		if err != nil {
+			log.Fatalf("bin.ReadMessage: %v", err)
+		}
+		if resp := telemetryResp.GetTelemetryResp(); resp != nil {
+			log.Printf("server response on TelemetryData: %s\n", resp.GetResultCode().String())
+		}
+		time.Sleep(3 * time.Second)
+	}
+}