add flags to client

cmd/client/main.go

@@ -2,10 +2,12 @@ package main
 
 import (
 	"bufio"
+	"flag"
 	"fmt"
 	"log"
 	"os"
 	"os/signal"
+	"strconv"
 	"strings"
 	"time"
 	"unicode/utf8"
@@ -63,8 +65,12 @@ func main() {
 	output := make(chan string)
 
 	signal.Notify(interrupt, os.Interrupt) // Notify the interrupt channel for SIGINT
+	hostname := flag.String("host", "localhost", "server hostname to connect to")
+	port := flag.Int("port", 7636, "port to connect to")
 
-	socketUrl := "ws://localhost:7636" + "/ws"
+	flag.Parse()
+	port_s := strconv.Itoa(*port)
+	socketUrl := "ws://" + *hostname + ":" + port_s + "/ws"
 	conn, _, err := websocket.DefaultDialer.Dial(socketUrl, nil)
 	id := uuid.New()