Google App Engine Golang - 如何获取用户的IP地址？ [英] Google App Engine Golang - how to get user's IP address?

问题描述

我想将ReCAPTCHA集成到我的GAE Golang Web应用程序中。为了验证验证码，我需要获取用户的IP地址。如何从表单提取用户的IP地址？

解决方案

在你的处理函数里调用r.RemoteAddr来接收ip：port

像这样：
$ b $ pre $ func renderIndexPage（w http.ResponseWriter， r * http.Request）{
ip：= strings.Split（r.RemoteAddr，：）[0]

}


更新02/15/2017
as @Aigars Matulis 指出，在当前版本中已经有一个函数来处理这个问题。

  ip，_，_：= net .SplitHostPort（r.RemoteAddr）
  

I want to integrate ReCAPTCHA to my GAE Golang web application. In order to verify a captcha, I need to get user's IP address. How can I fetch user's IP address from a form post?

解决方案

inside your handler function call r.RemoteAddr to receive ip:port

like this:

func renderIndexPage(w http.ResponseWriter, r *http.Request) {
  ip := strings.Split(r.RemoteAddr,":")[0] 

}

update 02/15/2017 as @Aigars Matulis pointed out, in current version there is already a function todo this

ip, _, _ := net.SplitHostPort(r.RemoteAddr)

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