End event called even though there was a download error

[logidelic]

I am observing the following behavior on a particular (unreliable) network. progress gets executed a few times before the download fails. However, instead of the error event being called, the end event is called:

//...
.then(function(){return new Promise(function(resolve, reject) {
    progress(request(MY_URL), {throttle:2000, delay:500})
    .on('progress', function (state) {
        console.log('Downloading ('+(state.percent*100).toFixed(1)+'%)...');
    })
    .on('error', function(err) {
        console.log('Error downloading.');
    })
    .on('end', function () {
        setTimeout(resolve, 100);
    })
    .pipe(fs.createWriteStream(MY_FNAME));
})})
.then(function(){
    console.log('Success!')
//...

Here I see :

Downloading (0.1%)...
Downloading (0.5%)...
Downloading (0.9%)...
Success!

I then verify that the file size is a small fraction of the total download. Notice how the log line "Error downloading" never gets displayed and instead see Success (i.e. 'end' event).

[BlackHole1]

Hi, can you solve it?