package main

import (
	"bufio"
	"fmt"
	"os"
	"time"
)

func SendUpdates() {
	for _, iface := range myInterfaces {
		// send RIP updates to all neighbors
		for _, neighbor := range myNeighbors {
			iface.udp.Write(neighbor, data)
			// wait for response for 12 seconds
			response := make([]byte, 512)
			iface.udp.Read(response)
			time.Sleep(12 * time.Second)
			if len(response) == 0 {
				RemoveNeighbor(neighbor)
			}
		}
	}
	time.Sleep(5 * time.Second)
}

func main() {
	if len(os.Args) != 2 {
		fmt.Printf("Usage:  %s <configFile>\n", os.Args[0])
		os.Exit(1)
	}

	fileName := os.Args[1]

	initialize(fileName)
	go SendUpdates()
	

	scanner := bufio.NewScanner(os.Stdin)

	for scanner.Scan() {
		line := scanner.Text()
		fmt.Println(line)
	}
}