go语言不是跨平台的吗，我的这段代码怎么不能运行？

Question

package main

import (

    "fmt"

    _"log"

    "io"

    "io/ioutil"

    _"net"

    _"strings"

    "net/http"

    _"net/url"

)

func main() {

    http80()

}

func http80() {

    http.HandleFunc("/",handle80)

    http.ListenAndServe("0.0.0.0:80", nil)

}

func handle80(w http.ResponseWriter, req *http.Request) {

    proxyReq, _ := http.NewRequest("GET", "http://www.oschina.net", req.Body)

    client := &http.Client{}

    response, errorMsg := client.Do(proxyReq)

    if errorMsg != nil {

        fmt.Println(errorMsg)

        return

    }

    defer response.Body.Close()

    var newBody string = ""

    buffer, _ := ioutil.ReadAll(response.Body)

    newBody = string(buffer)

    io.WriteString(w, newBody)

}

这个在ubuntu14.04上可以运行的，可是在

centos5.5
Linux localhost.localdomain 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:35 EDT 2010 i686 i686 i386 GNU/Linux

这样的设备上编译后运行也没报错，就是没反应

Answer 1

Linux绑定80端口是需要权限的，也许是不同环境的权限不一样