Comment Comment by hnav It drains up to 256K unread bytes period, it doesn't just optimize the case of the body not being read at all.https://cs.opensource.google/go/go/+/refs/tags/go1.27.2:src/...What it won't do looking at the code is handle streamed responses over transfer-encoding:chunked which means that if the other end is doing json.NewEncoder(responseWriter).Encode(&someStruct) this optimization won't do anything. parent hnav 17 days ago
https://cs.opensource.google/go/go/+/refs/tags/go1.27.2:src/...
What it won't do looking at the code is handle streamed responses over transfer-encoding:chunked which means that if the other end is doing
this optimization won't do anything.