一、概念
正向代理：代理client，用于代理上网
反向代理：代理server，用于网站防护、负载均衡
二、实现
NodeJs代码：
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| var http = require("http");
var url = require("url");
http.createServer(function(req,res){
console.log("start request:",req.url);
var option = url.parse(req.url);
option.headers = req.headers;
var proxyRequest = http.request(option, function(proxyResponse){
proxyResponse.on("data",function(chunk){
console.log("proxyResponse length",chunk.length);
});
proxyResponse.on("end",function(){
console.log("proxyed request ended");
res.end();
})
res.writeHead(proxyResponse.statusCode,proxyResponse.headers);
});
req.on("data",function(chunk){
console.log("in request length:",chunk.length);
proxyRequest.write(chunk,"binary");
})
req.on("end",function(){
console.log("original request ended");
proxyRequest.end();
})
}).listen(8080);
|
三、测试
- 启动Node服务器
- 设置浏览器的http代理
- 打开网页，正常，测试成功
参考：《Node.JS实战17：开发一个正向代理服务器》
