koukoku-client.go

package main

import (
    "bufio"
    "fmt"
    "log"
    "net"
    "strconv"

    "golang.org/x/text/transform"
    "golang.org/x/text/encoding/japanese"
)

func Connect(host string, port int) net.Conn {
    conn, err := net.Dial("tcp", host + ":" + strconv.Itoa(port))
    if err != nil {
        log.Fatal(err)
    }
    log.Print("Connected to " + host + " port " + strconv.Itoa(port))

    return conn
}

func main() {
    conn := Connect("koukoku.shadan.open.ad.jp", 23)
    defer conn.Close()
    fmt.Fprintln(conn, "nobody")

    scanner := bufio.NewScanner(conn)
    for scanner.Scan() {
        str, _, err := transform.String(japanese.ShiftJIS.NewDecoder(), scanner.Text())
        if err != nil {
            log.Fatal(err)
        }
        fmt.Println(str)
    }
}