v10.0.0rc1

This release includes changes to the protocol as well as some stability improvements.

As it changes the meta data format, a newer version (0.14.0 or greater) of Horizon is required.

Stability improvements

• Avoid 100% CPU usage when running certain commands (--newhist for example).
• Handshake code in overlay had issue that would lead to peers not able to an error “unexpected MAC”.
• Align publish with network consensus, this avoids potentially publishing bad ledgers in case of corruption.
• Align catchup with network consensus, this avoids having to rely on timing (which may cause significant delays in catchup).
• Properly fail work when spawning a process throws an exception.
• Transactions are better flooded on the network.
• SCP: synchronize nodes over time to reduce chance of timeout
• SCP: nomination was sometimes computing “round leader” improperly, leading to timeouts
• SCP: ensure latest quorum information is used when whitelisting validators
• Move to a more recent version of asio.
• Reduced number of warnings.
• Properly kill subprocesses.
• Moved to Catch2 (testing).
• Moved to c++ 14 for the toolchain.

Protocol Changes (v10)

• BumpSeqOp w/ seqnum processing changes
  • Stellar Lightning - CAP0001
• Liabilities enforced across the board
  • CAP0003
• Made offer rounding behavior more intuitive
• Moved signature verification to transaction apply step
  • CAP0002
• Fast fail not allowing to change trust on native assets

New features

• Improved private network load testing
  • updated loadgenerator to allow for more scalable and parallel submission of synthetic traffic.
  • Documented how to do performance testing
• New metrics:
  • archive health
  • performance characteristics of validators and network
• Validators can now be configured to upgrade to protocol versions other than the latest supported.
• Support for running tests in parallel