one simple connection client-server sending strings, works

client/main.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"net"
+	"os"
+)
+
+func main() { //client https://systembash.com/a-simple-go-tcp-server-and-tcp-client/
+
+	// connect to this socket
+	conn, _ := net.Dial("tcp", "127.0.0.1:3333")
+	hostname, err := os.Hostname()
+	if err != nil {
+		fmt.Println(err)
+		os.Exit(1)
+	}
+	fmt.Println("connecting to server as hostname:", hostname)
+	ip := getIp()
+	fmt.Println("local ip:", ip)
+	// send to socket
+	fmt.Fprintf(conn, hostname+", ip: "+ip.String()+"\n")
+	for {
+		message, err := bufio.NewReader(conn).ReadString('\n')
+		if err != nil {
+			fmt.Println(err)
+			fmt.Println("server disconnected")
+			os.Exit(1)
+		}
+		fmt.Print("Command from server: " + message)
+	}
+
+}
+
+func getIp() net.IP {
+	var ip net.IP
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		fmt.Println(err)
+	}
+	for _, i := range ifaces {
+		addrs, err := i.Addrs()
+		if err != nil {
+			fmt.Println(err)
+		}
+		for _, addr := range addrs {
+
+			switch v := addr.(type) {
+			case *net.IPNet:
+				ip = v.IP
+			case *net.IPAddr:
+				ip = v.IP
+			}
+			// process IP address
+		}
+	}
+	return ip
+}