Implement IP echo

main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"net/http"
+)
+
+var Error *log.Logger
+func init() {
+	log.SetFlags(log.Lmicroseconds | log.Lshortfile)
+	// logFile, err := os.Create("main.log")
+	// if err != nil {
+	// 	log.Printf("Error creating log file: %v", err)
+	// 	os.Exit(1)
+	// }
+	logger := io.MultiWriter(os.Stdout)
+	log.SetOutput(logger)
+
+	Error = log.New(io.MultiWriter(os.Stderr, os.Stdout),
+		fmt.Sprintf("%sERROR:%s ", "\033[0;101m", "\033[0m"),
+		log.Lmicroseconds|log.Lshortfile)
+}
+
+func main() {
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, r.RemoteAddr)
+	})
+
+	http.ListenAndServe(":8080", nil)
+}