Getting the response status when piping data

Hi,

I need to download data with Node and I’m using superagent to pipe data to a file stream. The example on the documentation works fine for simple cases, but I’m now trying to handle status like 403 or 404.

I understand these are not actual errors so the response body will be piped. I should, however, receive an event that tells me the status so I can abort before I write the data. Unfortunately, the end callbacks are called without the response/error when the request is piped. The callback arguments are always undefined.

Here’s the list of handlers I’ve tried:

superagent
      .get('http://httpbin.org/image/png')
      .on('response', (response) =>
      {
          console.log('response', response);
      })
      .on('error', (error) =>
      {
          console.log('error', error);
      })
      .on('end', (error, response) =>
      {
          console.log('end', error, response);
      })
      .end(response =>
      {
          console.log('end', response);
      })
      .pipe(file);

What’s the proper way to get the response status in that case?

Thanks, Warren.

[joewestcott]

Is this still the suggested way to handle errors when downloading/streaming to file? I get request.abort is not a function running this.

var stream = fs.createWriteStream('path/to/file')
var request = superagent
    .get('http://httpbin.org/image/png')
    .on('response', function(response) {
        if (response.status !== 200) {
            request.abort();
        }
    })
    .pipe(stream);

[kornelski]

You get the abort event, and no more. It stops downloading further data.