TCP Echo Client in Golang

gistfile1.go

package main
import (
    "net"
    "os"
)

func main() {
    strEcho := "Halo"
    servAddr := "localhost:6666"
    tcpAddr, err := net.ResolveTCPAddr("tcp", servAddr)
    if err != nil {
        println("ResolveTCPAddr failed:", err.Error())
        os.Exit(1)
    }

    conn, err := net.DialTCP("tcp", nil, tcpAddr)
    if err != nil {
        println("Dial failed:", err.Error())
        os.Exit(1)
    }

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

    println("write to server = ", strEcho)

    reply := make([]byte, 1024)

    _, err = conn.Read(reply)
    if err != nil {
        println("Write to server failed:", err.Error())
        os.Exit(1)
    }

    println("reply from server=", string(reply))

    conn.Close()
}

I wrote an article on how to write an echo protocol client/server in golang using either udp or tcp: http://xojoc.pw/justcode/golang-echo-protocol.html

Thanks, good works!

Is it possible this code will not completely read a response that is longer than 1024 bytes?

@g-harel Yes, look at line 30:
reply := make([]byte, 1024)

Thank you for sharing, this is helpful for me.

By the way, strEcho := "Halo" may append a \n , otherwise conn.Read will not receive anything.