Partial Content

Server perspective

Use 206 when a valid Range request asks for one or more portions of a representation.

When to use

• •Return 206 for resumable downloads, media seeking, and partial fetches
• •Use it only when the request included a satisfiable range

How to respond

• •Include Content-Range for single-range responses
• •Use multipart/byteranges when returning multiple ranges

Headers to consider

• •Content-Range
• •Accept-Ranges
• •Content-Type

Response body

• •Return the requested range bytes, or multipart body parts for multiple ranges

Server-side pitfalls

• •Do not use 206 when the client did not ask for a range
• •Return 416 instead when the requested range cannot be satisfied

Examples