Reuse receive buffer with FramedRead

[erenon]

Hi,
I can create a FramedRead with LengthDelimitedCodec, and read messages using framed_read.next().await??. The message type given that way is a BytesMut. This means, for each message, a new buffer is allocated. Instead, I'd like to get a reference to the underlying buffer, process that, and re-use the allocated memory for the next read. Is that possible with FramedRead? thanks.

[Darksonn]

Actually, it is not necessarily the case that a new buffer is allocated for each message. If you make sure to drop the BytesMut before you call next again, then when it calls BytesMut::reserve, it will notice that the refcount of the BytesMut is 1 which allows it to reuse the existing allocation.

[erenon]

Nice, thanks!