body parser before proxy request

[nguyenxuantuong]

I am wondering is there anyway to use body parse before proxy request. Here is my scenario:
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({ extended: false }));

proxy.on('proxyReq', function(proxyReq, req, res, options) {
//Need to write custom logic to check for the parameter inside the body. -- so that it can add custom header or modify proxyReq body, etc...
//for example: var userId = req.param("userId") -> this one only available with bodyParser declared //before this one (see abover)
});
app.all(route, function(req, res){
//proxy request to target url
return proxy.web(req, res, { target: config.localUrl + "/api"}, function(e) {
return res.json(501, e.stack || e.error || e);
});
});

The web application at target also uses its own bodyParser. But it seems that because the body parser being used twice, no response arrived after proxy the request to target. I am wondering if there is any way to work around that issue? Thank.

[lchenay]

Please see : https://github.com/nodejitsu/node-http-proxy/blob/master/examples/middleware/bodyDecoder-middleware.js