package main

import (
	"fmt"
	"net"
)

func inet_aton(ip string) (ip_int uint32) {
	ip_byte := net.ParseIP(ip).To4()
	for i := 0; i < len(ip_byte); i++ {
		ip_int |= uint32(ip_byte[i])
		if i < 3 {
			ip_int <<= 8
		}
	}
	return
}

func inet_ntoa(ip uint32) string {
	return fmt.Sprintf("%d.%d.%d.%d", byte(ip>>24), byte(ip>>16), byte(ip>>8),
		byte(ip))
}


func main() {
	ip0 := inet_aton("127.0.0.1")
	ip1 := inet_aton("127.225.225.224")
	
	
	diff := ip1 - ip0
	var parts uint32 = 30
	step := diff/parts 
	
	var ippps string = "0"
	for i := uint32(0); i < parts; i++ {
		//вместо принта шлю зону ботам
		if ippps != "0"{
			fmt.Println(ippps+"-"+inet_ntoa(ip0 + step*i))
		}
	        ippps = inet_ntoa(ip0 + step*i)
	}
	
}

package server

import (
	"bufio"
	"fmt"
	"io"
	"net"
	"os"
)

func Run(host string, port string, handle func(data string) string) {
	l, err := net.Listen("tcp", host+":"+port)
	if err != nil {
		fmt.Println("Error listening:", err.Error())
		os.Exit(1)
	}
	defer l.Close()
	fmt.Println("Слушает " + host + ":" + port)
	for {
		conn, err := l.Accept()
		if err != nil {
			fmt.Println("Ошибка запуска: ", err.Error())
			os.Exit(1)
		}
		go handleRequest(conn, handle)
	}
}

func handleRequest(conn net.Conn, handle func(data string) string) {
	fmt.Println("handleRequest")
	var (
		buf = make([]byte, 1024)
		r   = bufio.NewReader(conn)
		w   = bufio.NewWriter(conn)
	)
ILOOP:
	for {
		n, err := r.Read(buf)
		data := string(buf[:n])
		switch err {
		case io.EOF:
			break ILOOP
		case nil:

			if string(data) == "ConnectionClose" {
				fmt.Println("Соединение закрыто")
				w.WriteString("ConnectionClose\r\n")
				w.Flush()
				conn.Close()
			} else {
				w.WriteString(handle(data) + "\r\n")
				w.Flush()
				//break ILOOP
			}

		default:
			fmt.Println("Ошибка при получении:", err)
			break ILOOP
		}
	}

}

package client

import (
	"bufio"
	"fmt"
	"io"
	"net"
	"strings"
)

type TcpClient struct {
	r    *bufio.Reader
	w    *bufio.Writer
	buf  []byte
	conn net.Conn
}

func Connect(host string, port string) (TcpClient, error) {
	fmt.Println("Connect")
	conn, err := net.Dial("tcp", host+":"+port)
	return TcpClient{
		buf:  make([]byte, 1024),
		r:    bufio.NewReader(conn),
		w:    bufio.NewWriter(conn),
		conn: conn,
	}, err
}

func (tcp TcpClient) Send(dataSend string) (string, error) {
	var (
		returnData string
		returnErr  error
	)
	tcp.w.WriteString(dataSend + "\r\n")
	tcp.w.Flush()
ILOOP:
	for {
		n, err := tcp.r.Read(tcp.buf)
		data := string(tcp.buf[:n])
		switch err {
		case io.EOF:
			break ILOOP
		case nil:
			returnData = data
			returnErr = nil
			if isTransportOver(data) {
				break ILOOP
			}
		default:
			returnData = ""
			returnErr = err
		}
	}
	return returnData, returnErr
}
func (tcp TcpClient) Close() {
	tcp.conn.Close()
}

func isTransportOver(data string) (over bool) {
	over = strings.HasSuffix(data, "\r\n")
	return
}