Toralf Wittner 70d634daff

Grow noise buffers dynamically. (#1436) ...

* Grow noise buffers dynamically.

Currently we allocate a buffer of 176 KiB for each noise state, i.e.
each connection. For connections which see only small data frames
this is wasteful. At the same time we limit the max. write buffer size
to 16 KiB to keep the total buffer size relatively small, which
results in smaller encrypted messages and also makes it less likely to
ever encounter the max. noise package size of 64 KiB in practice when
communicating with other nodes using the same implementation.

This PR repaces the static buffer allocation with a dynamic one. We
only reserve a small space for the authentication tag plus some extra
reserve and are able to buffer larger data frames before encrypting.

* Grow write buffer from offset.

As suggested by @mxinden, this prevents increasing the write buffer up
to MAX_WRITE_BUF_LEN.

Co-authored-by: Pierre Krieger <pierre.krieger1708@gmail.com>

2020-02-13 12:38:33 +01:00

..

smoke.rs

Grow noise buffers dynamically. (#1436)

2020-02-13 12:38:33 +01:00