send request to other server from express node.js

Question

So I am trying to send a request from express node.js to another URI :

router.get('/', function (req, res, next) {
    http.get(URI, function(response) {
        console.log("Got response: " + response.statusCode);
        res.send(response);
    }).on('error', function(e) {
        console.log("Got error: " + e.message);
    });
});

This sends back an error message as follows :

GET http://localhost:3000/login (anonymous function) @ 
loginButton.js:48getSync @ loginButton.js:34(anonymous function) @ 
loginButton.js:22
loginButton.js:25 DOMException: Failed to execute 'send' on 
'XMLHttpRequest': Failed to load 'http://localhost:3000/login'.
at Error (native)
at http://localhost:3000/javascripts/index/loginButton.js:48:13
at getSync 
(http://localhost:3000/javascripts/index/loginButton.js:34:12)
at HTMLButtonElement.<anonymous> 
(http://localhost:3000/javascripts/index/loginButton.js:22:13)

I've tried to update it to the suggestion from : how to send Post request from node.js to another server ( java)? but the same error message is thrown. Does anyone know what could be wrong here?

Answer 1

With http.get , the response is a stream. As such, you either need to build up the entire body of the object (concatenate chunks from the stream) or you need to use a method that streams.

In express, res.send will send the data and close the connection. It assumes you have sent the entire payload.

Instead of using .send , use .write which sends the incoming chunks right back out.

The adjusted code would look something like this:

router.get('/', function (req, res, next) {
    http.get(URI, function(response) {
        res.write(response);
    }).on('end', function() {
        res.end();
    });
});