forked from fight100year/golearn
/
fiboTCP.go
73 lines (64 loc) · 959 Bytes
/
fiboTCP.go
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package main
import (
"bufio"
"fmt"
"net"
"os"
"strconv"
"strings"
"time"
)
func f(n int) int {
fn := make(map[int]int)
for i := 0; i <= n; i++ {
var f int
if i <= 2 {
f = 1
} else {
f = fn[i-1] + fn[i-2]
}
fn[i] = f
}
return fn[n]
}
func diyHandler(c net.Conn) {
for {
data, err := bufio.NewReader(c).ReadString('\n')
if err != nil {
fmt.Println(err)
os.Exit(1)
}
temp := strings.TrimSpace(string(data))
if temp == "stop" {
break
}
fibo := "-1\n"
n, err := strconv.Atoi(temp)
if err == nil {
fibo = strconv.Itoa(f(n)) + "\n"
}
c.Write([]byte(string(fibo)))
}
time.Sleep(5 * time.Second)
c.Close()
}
func main() {
port := ":8080"
if len(os.Args) != 1 {
port = os.Args[1]
}
l, err := net.Listen("tcp4", port)
if err != nil {
fmt.Println(err)
return
}
defer l.Close()
for {
c, err := l.Accept()
if err != nil {
fmt.Println(err)
return
}
go diyHandler(c)
}
}