I'm providing data directly to a socket. It looks like encode() writes to std::fmt::Write so it must be written to buffer then sent to the socket.

That's serviceable, but seems like a bit of a waste of memory and performance. So, two questions:

1. Is there a way to write to std::io::Write that I haven't seen? Reviewing the text encoder, it seems like no
2. Is there any interest in a pull request that would implement this? Maybe as encode_stream() and hide that behind the existing encode() and friends?