- [rpc] [\#3419](https://github.com/tendermint/tendermint/issues/3419) Start HTTPS server if `rpc.tls_cert_file` and `rpc.tls_key_file` are provided in the config (@guagualvcha)
- [mempool] [\#2778](https://github.com/tendermint/tendermint/issues/2778) No longer send txs back to peers who sent it to you.
Also, limit to 65536 active peers.
This vastly improves the bandwidth consumption of nodes.
For instance, for a 4 node localnet, in a test sending 250byte txs for 120 sec. at 500 txs/sec (total of 15MB):
- total bytes received from 1st node:
- before: 42793967 (43MB)
- after: 30003256 (30MB)
- total bytes sent to 1st node:
- before: 30569339 (30MB)
- after: 19304964 (19MB)
- [p2p] [\#3475](https://github.com/tendermint/tendermint/issues/3475) Simplify `GetSelectionWithBias` for addressbook (@guagualvcha)
- [rpc/lib/client] [\#3430](https://github.com/tendermint/tendermint/issues/3430) Disable compression for HTTP client to prevent GZIP-bomb DoS attacks (@guagualvcha)
### BUG FIXES:
- [blockchain] [\#2699](https://github.com/tendermint/tendermint/issues/2699) Update the maxHeight when a peer is removed
- [mempool] [\#3478](https://github.com/tendermint/tendermint/issues/3478) Fix memory-leak related to `broadcastTxRoutine` (@HaoyangLiu)