File Uploading to S3, but times out and file currupt - node.js

Question

Bellow is the code that I am using to upload a file to S3 using NodeJS and aws-sdk. Everything seems to work fine, however the browser just hangs. Also when I try to open the image on S3, it shows up broken.
module.exports = function(app) {
app.post('/upload', function(req, res){
var AWS = require('aws-sdk');
var accessKeyId = process.env.AWS_ACCESS_KEY;
var secretAccessKey = process.env.AWS_SECRET_KEY;
//pull var from heroku else send to dev
AWS.config.update({
accessKeyId: accessKeyId,
secretAccessKey: secretAccessKey
});
var s3 = new AWS.S3();
var file = req.files.filechooser;
if (file) {
var params = {
Bucket: 'mybucket',
Body: new Buffer(file, 'binary'),
ACL:'public-read',
ContentType: file.type,
Key: "ugc/" + file.name,
ContentLength: file.size
};
s3.putObject(params, function(err, data){
if (err) {
console.log("Error uploading data: ", err);
} else {
console.log("Successfully uploaded data to myBucket/myKey");
}
}).
on('httpUploadProgress', function(chunk) {
console.log("Uploaded", chunk.loaded, "of", chunk.total, "bytes");
}).
on('httpDone', function() {
console.log("done");
});
console.log("called");
} else {
console.log('Nothing to upload.');
}
});
}

Answer 1

You need to complete the call to putObject, after rehistering for listeners, to actually start the upload with send. By default, if callback is provided to an S3 method returning a Response, then you must initiate the request manually with send();
on('httpUploadProgress', function(chunk) {
console.log("Uploaded", chunk.loaded, "of", chunk.total, "bytes");
}).
on('httpDone', function() {
console.log("done");
}).
send(); // Actually initiate the request
See
http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/Request.html
http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/Request.html#send-property
For details.