没有回应使用快速代理路由 [英] No response using express proxy route

问题描述

我已经用nodejs，express和htt-proxy写了一个小代理。它适用于服务本地文件，但在代理到外部api时失败：

  var express = require（'express' ），
 app = express.createServer（），
 httpProxy = require（'http-proxy'）; 
 
 
 app.use（express.bodyParser（））; 
 app.listen（process.env.PORT || 1235）; 
 
 var proxy = new httpProxy.RoutingProxy（）; 
 
 app.get（'/'，function（req，res）{
 res.sendfile（__ dirname +'/index.html'）; 
}）; 
 app.get（'/ js / *'，function（req，res）{
 res.sendfile（__ dirname + req.url）; 
}）; 
 app.get（'/ css / *'，function（req，res）{
 res.sendfile（__ dirname + req.url）; 
}）; 
 
 app.all（'/ *'，function（req，res）{
 req.url ='v1 / public / yql？q = show％20tables& format = json& callback ='; 
 proxy.proxyRequest（req，res，{
 host：'query.yahooapis.com'，// yahoo只是一个例子来验证它不是apis错误
端口： 8080 
}）; 
 
}）; 
  

问题是，没有来自yahoo api的回复，也许有一个回应，但我不

解决方案

更简单的 pipe code>请求 -Package

  var request = require（'request'）; 
 
 app.use（'/ api'，function（req，res）{
 var url = apiUrl + req.url; 
 req.pipe（request（url）） .pipe（res）; 
}）; 
  

它将整个请求管道传递给API，并将响应管道传回给请求者。这也处理POST / PUT / DELETE和所有其他请求\o /

如果你也关心查询字符串，你应该管道它

  req.pipe（request（{qs：req.query，uri：url}））。pipe（res）; 
  

I've written a small proxy with nodejs, express and htt-proxy. It works well for serving local files but fails when it comes to proxy to external api:

var express = require('express'),
    app = express.createServer(),
    httpProxy = require('http-proxy');


app.use(express.bodyParser());
app.listen(process.env.PORT || 1235);

var proxy = new httpProxy.RoutingProxy();

app.get('/', function(req, res) {
    res.sendfile(__dirname + '/index.html');
});
app.get('/js/*', function(req, res) {
    res.sendfile(__dirname + req.url);
});
app.get('/css/*', function(req, res) {
    res.sendfile(__dirname + req.url);
});

app.all('/*', function(req, res) {
    req.url = 'v1/public/yql?q=show%20tables&format=json&callback=';
    proxy.proxyRequest(req, res, {
        host: 'query.yahooapis.com', //yahoo is just an example to verify its not the apis fault
        port: 8080
    });

});

The problem is that there is no response from the yahoo api, maybe there is an response but i dont came up in the browser.

解决方案

Even simpler with pipe and request-Package

var request = require('request');

app.use('/api', function(req, res) {
  var url = apiUrl + req.url;
  req.pipe(request(url)).pipe(res);
});

It pipes the whole request to the API and pipes the response back to the requestor. This also handles POST/PUT/DELETE and all other requests \o/

If you also care about query string you should pipe it as well

req.pipe(request({ qs:req.query, uri: url })).pipe(res);

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