Allow further reads / writes to stream

[stevehayles]

Recommendation

I may be wrong in this but it seems impossible to write additional data to an open stream ? Is it required within the spec to create a stream for every write. It's possible to write large amounts of data in one go but would it not be preferable to be able to read / write smaller 'payloads' and continue to read and write from an open stream much like you could with a normal socket connection ?