Wrong progress reported to ProgressListener by AbstractBoxMultipartRequest

[ivan-ankov]

• I have checked that the [SDK documentation][sdk-docs] doesn't solve my issue.
• I have checked that the [API documentation][api-docs] doesn't solve my issue.
• I have searched the [Box Developer Forums][dev-forums] and my issue isn't already reported (or if it has been reported, I have attached a link to it, for reference).
• I have searched [Issues in this repo][github-repo] and my issue isn't already reported.

Description of the Issue

The following code is just wrong in AbstractBoxMultipartRequest:

    public void writeTo(BufferedSink bufferedSink) throws IOException {
        byte[] buffer = new byte[BUFFER_SIZE];
        int n = this.inputStream.read(buffer);
        int totalWritten = n;
        while (n != -1) {
            bufferedSink.write(buffer, 0, n);
            if (progressListener != null) {
                progressListener.onProgressChanged(totalWritten, this.contentLength());
            }
            totalWritten += n;
            n = this.inputStream.read(buffer);
        }
    }

totalWritten is initialized with n and then incremented with the same n in the cycle, before n is updated.

Steps to Reproduce

1. Upload a file larger than 8192 bytes (the upload buffer size) and set a progress listener
2. At some point the listener will receive onProgressChanged() with numBytes > totalBytes

Expected Behavior

Progress reporting to be correct and to not exceed the size of the uploaded file

[stale]

This issue has been automatically marked as stale because it has not been updated in the last 30 days. It will be closed if no further activity occurs within the next 7 days. Feel free to reach out or mention Box SDK team member for further help and resources if they are needed.

[antusus]

Hi @ivan-ankov,
Sorry for very late response. You are right. We will look into this and fix this.