go tcp server

tcpserver.go

package main

import (
	"io"
	"log"
	"net"
	"os"
	"runtime"
)

func handleConnection(conn net.Conn) {
	defer conn.Close()
	b := make([]byte, 100)
	for {
		_, err := conn.Read(b)
		if err == io.EOF {
			return
		}
		if containsDoubleLnRf(b) {
			break
		}
	}
	conn.Write([]byte("HTTP/1.1 200 OK\n"))
}

func containsDoubleLnRf(b []byte) bool {
	for i := 0; i < len(b)-3; i++ {
		if b[i] == 13 && b[i+1] == 10 && b[i+2] == 13 && b[i+3] == 10 {
			return true
		}
	}
	return false
}

func main() {
	runtime.GOMAXPROCS(runtime.NumCPU())
	ln, err := net.Listen("tcp", ":8080")
	if err != nil {
		log.Printf("Error starting server: %s", err)
		os.Exit(1)
	}
	for {
		conn, err := ln.Accept()
		if err != nil {
			log.Printf("Could not accept connection: %s", err)
			continue
		}
		go handleConnection(conn)
	}
}