File upload Http client issue Titanium - titanium

Question

I am trying to upload a .mp4 file to some server. I am using the HTTP client provided by titanium. when I upload the file, HTTP client is adding some headers in the file due to which the file gets corrupted and cannot be played. When I download the uploaded file and open it in notepad I can see the header which are added to the file.
What should I do so that these headers are not added to the file?
Thanks a lot!
// CODE
var uploadFile = Titanium.Filesystem.getFile(dir, _previewUrl);
var fileUploadUrl = 'Some Url for the server to upload';
var headers = { 'Content-Type' : 'multipart/form-data' };
var content = { 'file' : uploadFile };
var xhr = Titanium.Network.createHTTPClient();
for(var key in _headers) {
xhr.setRequestHeader(key, _headers[key]);
}
xhr.onerror = function(e)
{
Ti.UI.createAlertDialog({title:'Error', message:e.error}).show();
Ti.API.info('IN ERROR ' + e.error);
};
xhr.setTimeout(20000);
xhr.onload = function(e)
{
Ti.UI.createAlertDialog({title:'Success', message:'status code ' + this.status}).show();
Ti.API.info('IN ONLOAD ' + this.status + ' readyState ' + this.readyState);
};
xhr.onsendstream = function(e)
{
ind.value = e.progress ;
Ti.API.info('ONSENDSTREAM - PROGRESS: ' + e.progress);
};
// open the client
xhr.open('POST',fileUploadUrl);
// send the data
xhr.send(content);
// END

Answer 1

try setting the headers after you call xhr.open
// open the client
xhr.open('POST',fileUploadUrl);
for(var key in _headers) {
xhr.setRequestHeader(key, _headers[key]);
}

Answer 2

Do not add { 'Content-Type' : 'multipart/form-data' }; header. This way you should get the file properly without any headers like boundary and file name etc. I could send image, 3gpp file like that successfully But, when I send a video file, my server PHP code $_FILES will be empty array. Even the $_FILES["files"]["error"] have no value. There should some other trick to send video file. (Titanium SDK 3.1.1 & android 4.1.2)
xhr.open("POST", URL);
xhr.send({
files : Titanium.Filesystem.getFile(Titanium.Filesystem.applicationDataDirectory, sourcefilename)
});
}

Answer 3

Try not sending the raw blob itself. Send base64 encoded string instead.
var uploadFile = Titanium.Filesystem.getFile(dir, _previewUrl);
var base64File = Ti.Utils.base64encode(uploadFile.read()).toString();
And try changing the header to
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xhr.send(base64File);
That will solve your problem.