node.js 如何通过 Amazon API Gateway + Lambda（节点）检索用户的公共 IP 地址
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How can I retrieve a user's public IP address via Amazon API Gateway + Lambda (node)
提问by rdegges
I'm currently writing a Node.js lambda function, in which I want to log the incoming requester's public IP address. I've been looking through both the API Gateway and Lambda docs all day, but haven't found a solution.
我目前正在编写一个 Node.js lambda 函数，我想在其中记录传入请求者的公共 IP 地址。我一整天都在浏览 API Gateway 和 Lambda 文档，但没有找到解决方案。
Does the lambda eventobject include request metadata I can use to extract the user's IP?
lambdaevent对象是否包含我可以用来提取用户 IP 的请求元数据？
采纳答案by Kenneth Rory Dunn
Here is a simple demonstration of using API Gateway's $context.identity.sourceIpin a Lambda function.
这是$context.identity.sourceIp在 Lambda 函数中使用 API 网关的简单演示。
API Mapping template:
API 映射模板：
{
??? "sourceIP" : "$context.identity.sourceIp"
}
Lambda function:
拉姆达函数：
'use strict';
console.log('Loading function');
exports.handler = (event, context, callback) => {
console.log('SourceIP =', event.identity.sourceIP);
callback(null, event.identity.sourceIP);
};
回答by Jonathan
Update for HTTP APIs
HTTP API 更新
Adding @Elijah's comment. The format for HTTP APIs will be
添加@Elijah 的评论。HTTP API 的格式为
event['requestContext']['http']['sourceIp']
Edit
编辑
A better way is actually to check
更好的方法实际上是检查
event['requestContext']['identity']['sourceIp']
You can also get the User-Agent from the same object
您还可以从同一个对象中获取 User-Agent
event['requestContext']['identity']['userAgent']
See Cesar's comment below. Headers are easily spoofed and the user can set X-Forwarded-Forto anything. AFAIK the sourceIpabove is retrieved from the TCP connection.
请参阅下面的塞萨尔评论。标题很容易被欺骗，用户可以设置X-Forwarded-For任何内容。AFAIKsourceIp以上是从 TCP 连接中检索到的。
Original answer
原答案
As of September 2017, you can create a method in API Gateway with Lambda Proxy integration, this will give you access to
截至 2017 年 9 月，您可以在 API Gateway 中创建一个与 Lambda 代理集成的方法，这将使您能够访问
events['headers']['X-Forwarded-For']
Which will look something like 1.1.1.1,214.25.52.1
哪个看起来像 1.1.1.1,214.25.52.1
The first ip 1.1.1.1is your user's public ip address.
第一个 ip1.1.1.1是您用户的公共 ip 地址。
回答by Mike76
In the API Gateway, it's the value
在 API 网关中，它是价值
$context.identity.sourceIp
You can pass that through to your Lambda via a mapping template.
您可以通过映射模板将其传递给您的 Lambda。
