Fix crash on stream destruction - cannot call shared_from_this() in dtor.
Fix debug output.
Use shared pointers instead of plain old pointers.
Add self_ reference in base stream to let it outlive the user frontend.
Coding style fixes.
Fix this code, it may throw unexpectedly.
Clean up dh_host_state.
Add identity construction from endpoint.
Fix unit-test - expected flurry size has changed.