Fix: Prevent multipart form data corruption in binary file uploads

[cristipufu]

Problem

Binary files (PNG, PDF, etc.) uploaded via AttachmentsService.upload() and upload_async() were being corrupted with HTTP multipart form data headers embedded in the file content.

Example of corruption:

Content-Disposition: form-data; name="file"; filename="image.png"
Content-Type: image/png

‰PNG
[actual PNG data...]

This made uploaded images and other binary files unusable.

Root Cause

The upload methods were using files={"file": file} parameter with httpx, which automatically wraps the file content in multipart/form-data encoding. UiPath's blob storage was incorrectly storing the entire multipart payload instead of extracting just the file content.

Solution

Replace files={"file": file} with content=file_content to send raw binary data without multipart wrapping.

Changes Made

• upload(): Read file content into memory and use content= parameter
• upload_async(): Read file content into memory and use content= parameter

[Copilot]

Pull Request Overview

This PR fixes binary file corruption during uploads by sending raw binary content instead of multipart form data.

• Update upload() and upload_async() to read the file content into memory and pass it as raw binary data using the content parameter.
• Bump the project version from 2.0.62 to 2.0.63.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/uipath/_services/attachments_service.py	Updated upload methods to prevent multipart form data wrapping in binary file uploads.
pyproject.toml	Updated project version to reflect the new changes.

[Copilot]

Reading the entire file content into memory may lead to increased memory usage for very large files. Consider using a streaming approach if the HTTP client supports it to improve performance.

[Copilot]

Reading the complete file into memory here could impact performance with large files. Evaluate if a streaming solution might be appropriate given the usage context.