go tcp client

gistfile1.txt

package main
import (
    "net"
    "os"
	"time"
)

func main() {
    strEcho := "Halo"
    servAddr := "localhost:5555"
    tcpAddr, err := net.ResolveTCPAddr("tcp", servAddr)
    if err != nil {
        println("ResolveTCPAddr failed:", err.Error())
        os.Exit(1)
    }
	println("connection established")
    conn, err := net.DialTCP("tcp", nil, tcpAddr)
    if err != nil {
        println("Dial failed:", err.Error())
        os.Exit(1)
    }

	time.Sleep(3000 * time.Millisecond)
	
    _, err = conn.Write([]byte(strEcho))
    if err != nil {
        println("Write to server failed:", err.Error())
        os.Exit(1)
    }

    println("writen to server = ", strEcho)
	
	time.Sleep(3000 * time.Millisecond)

	strEcho = "Halo2"
	_, err = conn.Write([]byte(strEcho))
    if err != nil {
        println("Write to server failed:", err.Error())
        os.Exit(1)
    }

    println("writen to server = ", strEcho)

    conn.Close()
}