net: in the fake implementation, allow writes to buffer on closed connections
This mimics the apparent behavior of writes on linux/amd64, in which a
write on an already-closed connection silently succeeds — even if the
connection has already been closed by the remote end — provided that
the packet fits in the kernel's send buffer.
I tested this by patching in CL 557437 and running the test on js/wasm
and wasip1/wasm locally.
Fixes #64317.
Change-Id: I43f6a89e5059115cb61e4ffc33a8371057cb67a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/558915
Auto-Submit: Bryan Mills <bcmills@google.com> Reviewed-by: Damien Neil <dneil@google.com> Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>