File sharing introduction

Allows users to upload and share files. You can upload any file of up to 5 MB in size. This feature is commonly used in social apps to share images, or in medical apps to share medical records for patients.

When a file is uploaded on a channel, it's stored and managed using a storage service, and associated with your key. Subscribers to that channel receive a file event which contains a file ID, filename, and optional description.

Sending files​

Sending a file is a two-step operation:

1. Generate an upload request
2. Upload the file using that URL and request body

Retrieving files​

Retrieving a file is also a two-step operation:

1. Request a download URL with a file name and its associated ID
2. Download the file using the returned 307 redirect to a time-limited download URL For more information, refer to File Sharing.