PUT mp4 file using AWS presigned url - amazon-web-services

Question

Currently I'm having issues sending a mp4 video file over put request to a presigned AWS url. We have it generated but when I send the video, its just a 32kb file that doesn't play.
My current code is as follows:
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestMethod("PUT");
connection.setRequestProperty("Connection", "Keep-Alive");
connection.setRequestProperty("Cache-Control", "no-cache");
connection.setRequestProperty("Content-Type", "video/mp4");
DataOutputStream request = new DataOutputStream(connection.getOutputStream());
byte[] buffer = new byte[BUFFER_SIZE];
InputStream inputStream = new BufferedInputStream(new FileInputStream(file));
while (inputStream.read(buffer) != -1) {
request.write(buffer);
}
I get OK - 200 Response Code but I think my video file is being messed up somehow?
What am I doing wrong?

Answer 1

This streaming code is incorrect:
byte[] buffer = new byte[BUFFER_SIZE];
InputStream inputStream = ...;
while (inputStream.read(buffer) != -1) {
request.write(buffer);
}
It should be more like this:
int length;
byte[] buffer = new byte[BUFFER_SIZE];
InputStream inputStream = ...;
while ((length = inputStream.read(buffer)) != -1) {
request.write(buffer, 0, length);
}