net/http: prevent server from draining request body if status 100 was not sent When a client sends a request with "Expect: 100-continue", it waits for the server to reply with a status 100 response before transmitting the request body. In some cases, a server might reject the request early, or otherwise do not read the request body in order to generate its responses. In such scenarios, we need to make sure that the server will not try to drain the request body. This ensures that the server will not hang, waiting for a request body that will never arrive. Fixes #75933 Change-Id: Ice63b2fadfc2a72b825fb97975a2bd116a6a6964 Reviewed-on: https://go-review.googlesource.com/c/go/+/793160 LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Damien Neil <dneil@google.com> Reviewed-by: Nicholas Husin <husin@google.com>
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